import QtQuick 2.13
import QtQuick.Controls 2.13
import QtGraphicalEffects 1.13
import QtQuick.Layouts 1.13
import QtMultimedia 5.13
import QtQuick.Dialogs 1.3
import DotherSide 0.1

import utils 1.0

import shared 1.0
import shared.panels 1.0
import shared.popups 1.0
import shared.stores 1.0

//TODO remove this dependency
import AppLayouts.Chat.panels 1.0

import StatusQ.Core 0.1
import StatusQ.Core.Theme 0.1
import StatusQ.Core.Utils 0.1 as StatusQUtils
import StatusQ.Components 0.1
import StatusQ.Controls 0.1 as StatusQ

Rectangle {
    id: control

    signal sendTransactionCommandButtonClicked()
    signal receiveTransactionCommandButtonClicked()
    signal stickerSelected(string hashId, string packId, string url)
    signal sendMessage(var event)
    signal unblockChat()

    property var usersStore
    property var store

    property var emojiPopup: null
    // Use this to only enable the Connections only when this Input opens the Emoji popup
    property bool emojiPopupOpened: false
    property bool closeGifPopupAfterSelection: true

    property bool emojiEvent: false
    property bool isColonPressed: false
    property bool isReply: false
    property string replyMessageId: replyArea.messageId

    property bool isImage: false
    property bool isEdit: false
    property bool isContactBlocked: false
    property bool isActiveChannel: false

    property var recentStickers
    property var stickerPackList

    property int messageLimit: 2000
    property int messageLimitVisible: 200

    property int chatType

    property string chatInputPlaceholder: qsTr("Message")

    property alias textInput: messageInputField

    property var fileUrls: []

    property var imageErrorMessageLocation: StatusChatInput.ImageErrorMessageLocation.Top // TODO: Remove this proeprty?

    property var messageContextMenu

    property alias suggestions: suggestionsBox

    enum ImageErrorMessageLocation {
        Top,
        Bottom
    }

    objectName: "statusChatInput"
    function parseMessage(message) {
        let mentionsMap = new Map()
        let index = 0
        while (true) {
            index = message.indexOf("<a href=", index)
            if (index < 0) {
                break
            }
            const startIndex = index
            const endIndex = message.indexOf("</a>", index) + 4
            if (endIndex < 0) {
                index += 8 // "<a href="
                continue
            }
            const addrIndex = message.indexOf("0x", index + 8)
            if (addrIndex < 0) {
                index += 8 // "<a href="
                continue
            }
            const addrEndIndex = message.indexOf("\"", addrIndex)
            if (addrEndIndex < 0) {
                index += 8 // "<a href="
                continue
            }
            const mentionLink = message.substring(startIndex, endIndex)
            const linkTag = message.substring(index, endIndex)
            const linkText = linkTag.replace(/(<([^>]+)>)/ig,"").trim()
            const atSymbol = linkText.startsWith("@") ? '' : '@'
            const mentionTag = Constants.mentionSpanTag + atSymbol + linkText + '</span> '
            mentionsMap.set(mentionLink, mentionTag)
            index += linkTag.length
        }

        let text = message;

        for (let [key, value] of mentionsMap)
            text = text.replace(new RegExp(key, 'g'), value)

        textInput.text = text
        textInput.cursorPosition = textInput.length
    }

    implicitWidth: layout.implicitWidth + layout.anchors.leftMargin + layout.anchors.rightMargin
    implicitHeight: layout.implicitHeight + layout.anchors.topMargin + layout.anchors.bottomMargin

    color: Style.current.transparent

    QtObject {
        id: d

        //mentions helper properties
        property string copiedTextPlain: ""
        property string copiedTextFormatted: ""
        property int copyTextStart: 0

        // set to true when pasted text comes from this component (was copied within this component)
        property bool internalPaste: false

        property int leftOfMentionIndex: -1
        property int rightOfMentionIndex: -1

        readonly property StateGroup emojiPopupTakeover: StateGroup {
            states: State {
                when: control.emojiPopupOpened

                PropertyChanges {
                    target: emojiPopup

                    parent: control
                    closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutsideParent
                    x: control.width - emojiPopup.width - Style.current.halfPadding
                    y: -emojiPopup.height
                }
            }
        }

        function updateMentionsPositions() {
            if (mentionsPos.length == 0) {
                return
            }

            const unformattedText = messageInputField.getText(0, messageInputField.length)
            if (!unformattedText.includes("@")) {
                return
            }

            const keyEvent = messageInputField.keyEvent
            if ((keyEvent.key === Qt.Key_Right) || (keyEvent.key === Qt.Key_Left)
                    || (keyEvent.key === Qt.Key_Up) || (keyEvent.key === Qt.Key_Down)) {
                return
            }

            for (var k = 0; k < mentionsPos.length; k++) {
                const aliasIndex = unformattedText.indexOf(mentionsPos[k].name)

                if ((aliasIndex !== -1) && (aliasIndex - 1 !== mentionsPos[k].leftIndex)) {
                    mentionsPos[k].leftIndex = aliasIndex - 1
                    mentionsPos[k].rightIndex = aliasIndex + mentionsPos[k].name.length
                }
            }
        }
    }

    function insertInTextInput(start, text) {
        // Repace new lines with entities because `insert` gets rid of them
        messageInputField.insert(start, text.replace(/\n/g, "<br/>"));
    }

    function togglePopup(popup, btn) {
        if (popup !== stickersPopup) {
            stickersPopup.close()
        }

        if (popup !== gifPopup) {
            gifPopup.close()
        }

        if (popup !== emojiPopup) {
            emojiPopup.close()
        }

        if (popup.opened) {
            popup.close()
            btn.highlighted = false
        } else {
            popup.open()
            btn.highlighted = true
        }
    }

    Connections {
        enabled: control.emojiPopupOpened
        target: emojiPopup

        onEmojiSelected: function (text, atCursor) {
            insertInTextInput(atCursor ? messageInputField.cursorPosition : messageInputField.length, text)
            emojiBtn.highlighted = false
            messageInputField.forceActiveFocus();
        }
        onClosed: {
            emojiBtn.highlighted = false
            control.emojiPopupOpened = false
        }
    }

    property var mentionsPos: []

    function insertMention(aliasName, lastAtPosition, lastCursorPosition) {
        let startInd = aliasName.indexOf("(");
        if (startInd > 0){
            aliasName = aliasName.substring(0, startInd-1)
        }

        const hasEmoji = StatusQUtils.Emoji.hasEmoji(messageInputField.text)
        const spanPlusAlias = `${Constants.mentionSpanTag}@${aliasName}</a></span> `;

        let rightIndex = hasEmoji ? lastCursorPosition + 2 : lastCursorPosition
        messageInputField.remove(lastAtPosition, rightIndex)
        messageInputField.insert(lastAtPosition, spanPlusAlias)
        messageInputField.cursorPosition = lastAtPosition + aliasName.length + 2;
        if (messageInputField.cursorPosition === 0) {
            // It reset to 0 for some reason, go back to the end
            messageInputField.cursorPosition = messageInputField.length
        }
        mentionsPos.push({name: aliasName, leftIndex: lastAtPosition, rightIndex: (lastAtPosition+aliasName.length + 1)});
    }

    function isUploadFilePressed(event) {
        return (event.key === Qt.Key_U) && (event.modifiers & Qt.ControlModifier) && imageBtn.visible && !imageDialog.visible
    }

    function checkTextInsert() {
        if (emojiSuggestions.visible) {
            replaceWithEmoji(extrapolateCursorPosition(), emojiSuggestions.shortname, emojiSuggestions.unicode);
            return true
        }
        if (suggestionsBox.visible) {
            suggestionsBox.selectCurrentItem();
            return true
        }
        return false
    }

    function onKeyPress(event) {
        if (event.modifiers === Qt.NoModifier && (event.key === Qt.Key_Enter || event.key === Qt.Key_Return)) {
            if (checkTextInsert()) {
                event.accepted = true;
                return
            }
            if (messageInputField.length <= messageLimit) {
                control.sendMessage(event)
                control.hideExtendedArea();
                event.accepted = true
                return;
            }
            if (event) {
                event.accepted = true
                messageTooLongDialog.open()
            }
        }

        const symbolPressed = event.text.length > 0 &&
                            event.key !== Qt.Key_Backspace &&
                            event.key !== Qt.Key_Delete &&
                            event.key !== Qt.Key_Escape
        if (mentionsPos.length > 0 && symbolPressed) {
            for (var i = 0; i < mentionsPos.length; i++) {
                if (messageInputField.cursorPosition === mentionsPos[i].leftIndex) {
                    d.leftOfMentionIndex = i
                    event.accepted = true
                    return
                } else if (messageInputField.cursorPosition === mentionsPos[i].rightIndex) {
                    d.rightOfMentionIndex = i
                    event.accepted = true
                    return
                }
            }
        }

        if (event.key === Qt.Key_Tab) {
            if (checkTextInsert()) {
                event.accepted = true;
                return
            }
        }

        const message = control.extrapolateCursorPosition();

        // handle new line in blockquote
        if ((event.key === Qt.Key_Enter || event.key === Qt.Key_Return) && (event.modifiers & Qt.ShiftModifier) && message.data.startsWith(">")) {
            if(message.data.startsWith(">") && !message.data.endsWith("\n\n")) {
                let newMessage1 = ""
                if (message.data.endsWith("\n> ")) {
                    newMessage1 = message.data.substr(0, message.data.lastIndexOf("> ")) + "\n\n"
                } else {
                    newMessage1 = message.data + "\n> ";
                }
                messageInputField.remove(0, messageInputField.cursorPosition);
                insertInTextInput(0, StatusQUtils.Emoji.parse(newMessage1));
            }
            event.accepted = true
        }
        // handle backspace when entering an existing blockquote
        if ((event.key === Qt.Key_Backspace || event.key === Qt.Key_Delete)) {
            if(message.data.startsWith(">") && message.data.endsWith("\n\n")) {
                const newMessage = message.data.substr(0, message.data.lastIndexOf("\n")) + "> ";
                messageInputField.remove(0, messageInputField.cursorPosition);
                insertInTextInput(0, StatusQUtils.Emoji.parse(newMessage));
                event.accepted = true
            }
        }

        if ((event.key === Qt.Key_C) && (event.modifiers & Qt.ControlModifier)) {
            if (messageInputField.selectedText !== "") {
                d.copiedTextPlain = messageInputField.getText(
                            messageInputField.selectionStart, messageInputField.selectionEnd)
                d.copiedTextFormatted = messageInputField.getFormattedText(
                            messageInputField.selectionStart, messageInputField.selectionEnd)
            }
        }

        if ((event.key === Qt.Key_V) && (event.modifiers & Qt.ControlModifier)) {
            messageInputField.remove(messageInputField.selectionStart, messageInputField.selectionEnd)

            // cursor position must be stored in a helper property because setting readonly to true causes change
            // of the cursor position to the end of the input
            d.copyTextStart = messageInputField.cursorPosition
            messageInputField.readOnly = true

            if (d.copiedTextPlain === QClipboardProxy.text) {
                d.internalPaste = true
            } else {
                d.copiedTextPlain = ""
                d.copiedTextFormatted = ""
            }
        }

        // ⌘⇧U
        if (isUploadFilePressed(event)) {
            imageBtn.clicked()
            event.accepted = true
        }

        if (event.key === Qt.Key_Down) {
            return emojiSuggestions.listView.incrementCurrentIndex()
        }
        if (event.key === Qt.Key_Up) {
            return emojiSuggestions.listView.decrementCurrentIndex()
        }

        isColonPressed = (event.key === Qt.Key_Colon) && (event.modifiers & Qt.ShiftModifier);

        if (suggestionsBox.visible) {
            let aliasName = suggestionsBox.formattedPlainTextFilter;
            let lastCursorPosition = suggestionsBox.suggestionFilter.cursorPosition;
            let lastAtPosition = suggestionsBox.suggestionFilter.lastAtPosition;
            if (aliasName.toLowerCase() === suggestionsBox.suggestionsModel.get(suggestionsBox.listView.currentIndex).name.toLowerCase()
                    && (event.key !== Qt.Key_Backspace) && (event.key !== Qt.Key_Delete)) {
                insertMention(aliasName, lastAtPosition, lastCursorPosition);
            } else if (event.key === Qt.Key_Space) {
                var plainTextToReplace = messageInputField.getText(lastAtPosition, lastCursorPosition);
                messageInputField.remove(lastAtPosition, lastCursorPosition);
                messageInputField.insert(lastAtPosition, plainTextToReplace);
                suggestionsBox.hide();
            }
        }
    }

    function getLineStartPosition(selectionStart) {
        const text = getPlainText()
        const lastNewLinePos = text.lastIndexOf("\n\n", messageInputField.selectionStart)
        return lastNewLinePos === -1 ? 0 : lastNewLinePos + 2
    }

    function prefixSelectedLine(prefix) {
        const selectedLinePosition = getLineStartPosition(messageInputField.selectionStart)
        insertInTextInput(selectedLinePosition, prefix)
    }

    function unprefixSelectedLine(prefix) {
        if( isSelectedLinePrefixedBy(messageInputField.selectionStart, prefix) ) {
            const selectedLinePosition = getLineStartPosition(messageInputField.selectionStart)
            messageInputField.remove(selectedLinePosition, selectedLinePosition + prefix.length)
        }
    }

    function isSelectedLinePrefixedBy(selectionStart, prefix) {
        const selectedLinePosition = getLineStartPosition(selectionStart)
        const text = getPlainText()
        const selectedLine = text.substring(selectedLinePosition)
        return selectedLine.startsWith(prefix)
    }

    function wrapSelection(wrapWith) {
        if (messageInputField.selectionStart - messageInputField.selectionEnd === 0) return

        // calulate the new selection start and end positions
        var newSelectionStart = messageInputField.selectionStart + wrapWith.length
        var newSelectionEnd = messageInputField.selectionEnd - messageInputField.selectionStart + newSelectionStart

        insertInTextInput(messageInputField.selectionStart, wrapWith);
        insertInTextInput(messageInputField.selectionEnd, wrapWith);

        messageInputField.select(newSelectionStart, newSelectionEnd)
    }

    function unwrapSelection(unwrapWith, selectedTextWithFormationChars) {
        if (messageInputField.selectionStart - messageInputField.selectionEnd === 0) return

        // calulate the new selection start and end positions
        var newSelectionStart = messageInputField.selectionStart -  unwrapWith.length
        var newSelectionEnd = messageInputField.selectionEnd-messageInputField.selectionStart + newSelectionStart

        selectedTextWithFormationChars = selectedTextWithFormationChars.trim()
        // Check if the selectedTextWithFormationChars has formation chars and if so, calculate how many so we can adapt the start and end pos
        const selectTextDiff = (selectedTextWithFormationChars.length - messageInputField.selectedText.length) / 2

        // Remove the deselected option from the before and after the selected text
        const prefixChars = messageInputField.getText((messageInputField.selectionStart - selectTextDiff), messageInputField.selectionStart)
        const updatedPrefixChars = prefixChars.replace(unwrapWith, '')
        const postfixChars = messageInputField.getText(messageInputField.selectionEnd, (messageInputField.selectionEnd + selectTextDiff))
        const updatedPostfixChars = postfixChars.replace(unwrapWith, '')

        // Create updated selected string with pre and post formatting characters
        const updatedSelectedStringWithFormatChars = updatedPrefixChars + messageInputField.selectedText + updatedPostfixChars

        messageInputField.remove(messageInputField.selectionStart - selectTextDiff, messageInputField.selectionEnd + selectTextDiff)

        insertInTextInput(messageInputField.selectionStart, updatedSelectedStringWithFormatChars)

        messageInputField.select(newSelectionStart, newSelectionEnd)
    }

    function getPlainText() {
        const textWithoutMention = messageInputField.text.replace(/<span style="[ :#0-9a-z;\-\.,\(\)]+">(@([a-z\.]+(\ ?[a-z]+\ ?[a-z]+)?))<\/span>/ig, "\[\[mention\]\]$1\[\[mention\]\]")

        const deparsedEmoji = StatusQUtils.Emoji.deparse(textWithoutMention);

        return globalUtils.plainText(deparsedEmoji)
    }

    function removeMentions(currentText) {
        return currentText.replace(/\[\[mention\]\]/g, '')
    }

    function parseMarkdown(markdownText) {
        const htmlText = markdownText
        .replace(/\~\~([^*]+)\~\~/gim, '~~<span style="text-decoration: line-through">$1</span>~~')
        .replace(/\*\*([^*]+)\*\*/gim, ':asterisk::asterisk:<b>$1</b>:asterisk::asterisk:')
        .replace(/\`([^*]+)\`/gim, '`<code>$1</code>`')
        .replace(/\*([^*]+)\*/gim, ':asterisk:<i>$1</i>:asterisk:')
        return htmlText.replace(/\:asterisk\:/gim, "*")
    }

    function getFormattedText(start, end) {
        start = start || 0
        end = end || messageInputField.length

        const oldFormattedText = messageInputField.getFormattedText(start, end)

        const found = oldFormattedText.match(/<!--StartFragment-->([\w\W\s]*)<!--EndFragment-->/m);

        return found[1]
    }

    function setFormatInInput(formationFunction, startTag, endTag, formationChar, numFormationChars) {
        const inputText = getFormattedText()
        const plainInputText = messageInputField.getText(0, messageInputField.length)

        let lengthDifference

        try {
            const result = formationFunction(inputText)

            if (!result) {
                return
            }
            const parsed = JSON.parse(result)

            let substring
            let nbEmojis
            parsed.forEach(function (match) {
                match[1] += 1
                const truncatedInputText = inputText.substring(0, match[1] + numFormationChars)
                const truncatedPlainText = plainInputText.substring(0, messageInputField.cursorPosition)

                const lengthDifference = truncatedInputText.length - truncatedPlainText.length

                nbEmojis = StatusQUtils.Emoji.nbEmojis(truncatedInputText)


                match[1] += (nbEmojis * -2)
                match[0] += (nbEmojis * -2)
                substring = inputText.substring(match[0], match[1])

                if (plainInputText.charAt(match[0] - 1) !== formationChar) {
                    match[0] -= lengthDifference
                    match[1] -= lengthDifference
                } else {
                    match[1] -= lengthDifference
                }

                messageInputField.remove(match[0], match[1])
                insertInTextInput(match[0], `${startTag}${substring}${endTag}`)
            })
        } catch (e) {
            //
        }
    }

    Instantiator {
        id: dummyContactList
        model: control.usersStore ? control.usersStore.usersModel : []
        delegate: QtObject {
            property string contactName: model.displayName
        }
    }


    function onRelease(event) {
        if (event.key === Qt.Key_Backspace && textFormatMenu.opened) {
            textFormatMenu.close()
        }
        // the text doesn't get registered to the textarea fast enough
        // we can only get it in the `released` event

        let eventText = event.text
        if(event.key === Qt.Key_Space) {
            eventText = "&nbsp;"
        }

        if(d.rightOfMentionIndex !== -1) {
            messageInputField.insert(mentionsPos[d.rightOfMentionIndex].rightIndex, eventText)

            d.rightOfMentionIndex = -1
        }

        if(d.leftOfMentionIndex !== -1) {
            messageInputField.insert(mentionsPos[d.leftOfMentionIndex].leftIndex, eventText)

            d.leftOfMentionIndex = -1
        }

        messageInputField.readOnly = false

        if (d.internalPaste) {
            if (d.copiedTextPlain.includes("@")) {
                d.copiedTextFormatted = d.copiedTextFormatted.replace(/underline/g, "none").replace(/span style="/g, "span style=\" text-decoration:none;")
                for (let j = 0; j < dummyContactList.count; j++) {
                    const name = dummyContactList.objectAt(j).contactName

                    if (d.copiedTextPlain.indexOf(name) > -1) {
                        const subStr = name.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')
                        const regex = new RegExp(subStr, 'gi')
                        let result = null
                        while ((result = regex.exec(d.copiedTextPlain))) {
                            const mention = {
                                name: name,
                                leftIndex: (result.index + d.copyTextStart - 1),
                                rightIndex: (result.index + d.copyTextStart + name.length)
                            }
                            mentionsPos.push(mention)
                        }
                    }
                }
            }

            const prevLength = messageInputField.length
            insertInTextInput(d.copyTextStart, d.copiedTextFormatted)
            messageInputField.cursorPosition = d.copyTextStart + messageInputField.length - prevLength
            d.internalPaste = false
        } else if ((event.key === Qt.Key_V) && (event.modifiers & Qt.ControlModifier)) {
            insertInTextInput(d.copyTextStart, QClipboardProxy.text)
            messageInputField.cursorPosition = d.copyTextStart + QClipboardProxy.text.length
        }

        if (event.key !== Qt.Key_Escape) {
            emojiEvent = emojiHandler(event)
            if (!emojiEvent) {
                emojiSuggestions.close()
            }
        }
    }

    // since emoji length is not 1 we need to match that position that TextArea returns
    // to the actual position in the string.
    function extrapolateCursorPosition() {
        // we need only the message part to be html
        const text = getPlainText()
        const completelyPlainText = removeMentions(text)
        const plainText = StatusQUtils.Emoji.parse(text);

        var bracketEvent = false;
        var almostMention = false;
        var mentionEvent = false;
        var length = 0;

        // This loop calculates the cursor position inside the plain text which contains the image tags (<img>) and the mention tags ([[mention]])
        const cursorPos = messageInputField.cursorPosition
        let character = ""
        for (var i = 0; i < plainText.length; i++) {
            if (length >= cursorPos) break;

            character = plainText.charAt(i)
            if (!bracketEvent && character !== '<' && !mentionEvent && character !== '[')  {
                length++;
            } else if (!bracketEvent && character === '<') {
                bracketEvent = true;
            } else if (bracketEvent && character === '>') {
                bracketEvent = false;
                length++;
            } else if (!mentionEvent && almostMention && plainText.charAt(i) === '[') {
                almostMention = false
                mentionEvent = true
            } else if (!mentionEvent && !almostMention && plainText.charAt(i) === '[') {
                almostMention = true
            } else if (!mentionEvent && almostMention && plainText.charAt(i) !== '[') {
                almostMention = false
            } else if (mentionEvent && !almostMention && plainText.charAt(i) === ']') {
                almostMention = true
            } else if (mentionEvent && almostMention && plainText.charAt(i) === ']') {
                almostMention = false
                mentionEvent = false
            }
        }

        let textBeforeCursor = StatusQUtils.Emoji.deparseFromParse(plainText.substr(0, i));

        return {
            cursor: countEmojiLengths(plainText.substr(0, i)) + messageInputField.cursorPosition + text.length - completelyPlainText.length,
            data: textBeforeCursor,
        };
    }

    function emojiHandler(event) {
        let message = extrapolateCursorPosition();
        pollEmojiEvent(message);

        // state machine to handle different forms of the emoji event state
        if (!emojiEvent && isColonPressed) {
            return (message.data.length <= 1 || Utils.isSpace(message.data.charAt(message.cursor - 1))) ? true : false;
        } else if (emojiEvent && isColonPressed) {
            const index = message.data.lastIndexOf(':', message.cursor - 2);
            if (index >= 0 && message.cursor > 0) {
                const shortname = message.data.substr(index, message.cursor);
                const codePoint = StatusQUtils.Emoji.getEmojiUnicode(shortname);
                if (codePoint !== undefined) {
                    replaceWithEmoji(message, shortname, codePoint);
                }
                return false;
            }
            return true;
        } else if (emojiEvent && isKeyValid(event.key) && !isColonPressed) {
            // popup
            const index2 = message.data.lastIndexOf(':', message.cursor - 1);
            if (index2 >= 0 && message.cursor > 0) {
                const emojiPart = message.data.substr(index2, message.cursor);
                if (emojiPart.length > 2) {
                    const emojis = StatusQUtils.Emoji.emojiJSON.emoji_json.filter(function (emoji) {
                        return emoji.name.includes(emojiPart) ||
                                emoji.shortname.includes(emojiPart) ||
                                emoji.aliases.some(a => a.includes(emojiPart))
                    })

                    emojiSuggestions.openPopup(emojis, emojiPart)
                }
                return true;
            }
        } else if (emojiEvent && !isKeyValid(event.key) && !isColonPressed) {
            return false;
        }
        return false;
    }

    function countEmojiLengths(value) {
        const match = StatusQUtils.Emoji.getEmojis(value);
        var length = 0;

        if (match && match.length > 0) {
            for (var i = 0; i < match.length; i++) {
                length += StatusQUtils.Emoji.deparseFromParse(match[i]).length;
            }
            length = length - match.length;
        }
        return length;
    }

    function replaceWithEmoji(message, shortname, codePoint) {
        const encodedCodePoint = StatusQUtils.Emoji.getEmojiCodepoint(codePoint)
        messageInputField.remove(messageInputField.cursorPosition - shortname.length, messageInputField.cursorPosition);
        insertInTextInput(messageInputField.cursorPosition, StatusQUtils.Emoji.parse(encodedCodePoint) + " ");
        emojiSuggestions.close()
        emojiEvent = false
    }

    // check if user has placed cursor near valid emoji colon token
    function pollEmojiEvent(message) {
        const index = message.data.lastIndexOf(':', message.cursor);
        if (index >= 0) {
            emojiEvent = validSubstr(message.data.substr(index, message.cursor - index));
        }
    }

    function validSubstr(substr) {
        for(var i = 0; i < substr.length; i++) {
            var c = substr.charAt(i);
            if (Utils.isSpace(c) === true || Utils.isPunct(c) === true)
                return false;
        }
        return true;
    }

    function isKeyValid(key) {
        if (key === Qt.Key_Space || key ===  Qt.Key_Tab ||
                (key >= Qt.Key_Exclam && key <= Qt.Key_Slash) ||
                (key >= Qt.Key_Semicolon && key <= Qt.Key_Question) ||
                (key >= Qt.Key_BracketLeft && key <= Qt.Key_hyphen))
            return false;
        return true;
    }

    function hideExtendedArea() {
        isImage = false;
        isReply = false;
        control.fileUrls = []
        imageArea.imageSource = [];
        replyArea.userName = ""
        replyArea.message = ""
        for (let i=0; i<validators.children.length; i++) {
            const validator = validators.children[i]
            validator.images = []
        }
    }

    function validateImages(imagePaths) {
        // needed because imageArea.imageSource is not a normal js array
        const existing = (imageArea.imageSource || []).map(x => x.toString())
        let validImages = Utils.deduplicate(existing.concat(imagePaths))
        for (let i=0; i<validators.children.length; i++) {
            const validator = validators.children[i]
            validator.images = validImages
            validImages = validImages.filter(validImage => validator.validImages.includes(validImage))
        }
        return validImages
    }

    function showImageArea(imagePaths) {
        isImage = true;
        isReply = false;
        imageArea.imageSource = imagePaths
        control.fileUrls = imageArea.imageSource
    }

    function showReplyArea(messageId, userName, message, contentType, image, sticker) {
        isReply = true
        replyArea.userName = userName
        replyArea.message = message
        replyArea.contentType = contentType
        replyArea.image = image
        replyArea.stickerData = sticker
        replyArea.messageId = messageId
        messageInputField.forceActiveFocus();
    }

    function forceInputActiveFocus() {
        messageInputField.forceActiveFocus();
    }

    Connections {
        enabled: control.isActiveChannel
        target: Global.appMain.dragAndDrop
        ignoreUnknownSignals: true
        onDroppedOnValidScreen: (drop) => {
                                    let validImages = validateImages(drop.urls)
                                    if (validImages.length > 0) {
                                        showImageArea(validImages)
                                        drop.acceptProposedAction()
                                    }
                                }
    }

     // This is used by Squish tests to not have to access the file dialog
    function selectImageString(filePath) {
        let validImages = validateImages([filePath])
        if (validImages.length > 0) {
            control.showImageArea(validImages)
        }
        messageInputField.forceActiveFocus();
    }

    FileDialog {
        id: imageDialog
        title: qsTr("Please choose an image")
        folder: shortcuts.pictures
        selectMultiple: true
        nameFilters: [
            qsTr("Image files (%1)").arg(Constants.acceptedDragNDropImageExtensions.map(img => "*" + img).join(" "))
        ]
        onAccepted: {
            imageBtn.highlighted = false
            let validImages = validateImages(imageDialog.fileUrls)
            if (validImages.length > 0) {
                control.showImageArea(validImages)
            }
            messageInputField.forceActiveFocus();
        }
        onRejected: {
            imageBtn.highlighted = false
        }
    }

    MessageDialog {
        id: messageTooLongDialog
        title: qsTr("Your message is too long.")
        icon: StandardIcon.Critical
        text: qsTr("Please make your message shorter. We have set the limit to 2000 characters to be courteous of others.")
        standardButtons: StandardButton.Ok
    }

    StatusEmojiSuggestionPopup {
        id: emojiSuggestions
        messageInput: messageInput
        onClicked: function (index) {
            if (index === undefined) {
                index = emojiSuggestions.listView.currentIndex
            }

            const unicode = emojiSuggestions.modelList[index].unicode_alternates || emojiSuggestions.modelList[index].unicode
            replaceWithEmoji(extrapolateCursorPosition(), emojiSuggestions.shortname, unicode);
        }
    }

    SuggestionBoxPanel {
        id: suggestionsBox
        objectName: "suggestionsBox"
        model: control.usersStore ? control.usersStore.usersModel : []
        x : messageInput.x
        y: -height - Style.current.smallPadding
        width: messageInput.width
        filter: messageInputField.text
        cursorPosition: messageInputField.cursorPosition
        property: ["name", "nickname", "ensName", "alias"]
        inputField: messageInputField
        onItemSelected: function (item, lastAtPosition, lastCursorPosition) {
            messageInputField.forceActiveFocus();
            let name = item.name.replace("@", "")
            insertMention(name, lastAtPosition, lastCursorPosition)
            suggestionsBox.suggestionsModel.clear()
        }
        onVisibleChanged: {
            if (!visible) {
                messageInputField.forceActiveFocus();
            }
        }
    }

    ChatCommandsPopup {
        id: chatCommandsPopup
        x: 8
        y: -height
        onSendTransactionCommandButtonClicked: {
            control.sendTransactionCommandButtonClicked()
            chatCommandsPopup.close()
        }
        onReceiveTransactionCommandButtonClicked: {
            control.receiveTransactionCommandButtonClicked()
            chatCommandsPopup.close()
        }
        onClosed: {
            chatCommandsBtn.highlighted = false
        }
        onOpened: {
            chatCommandsBtn.highlighted = true
        }
    }

    StatusGifPopup {
        id: gifPopup
        width: 360
        height: 440
        x: control.width - width - Style.current.halfPadding
        y: -height
        gifSelected: function (event, url) {
            messageInputField.text += "\n" + url
            control.sendMessage(event)
            gifBtn.highlighted = false
            messageInputField.forceActiveFocus()
            if (control.closeGifPopupAfterSelection)
                gifPopup.close()
        }
        onClosed: {
            gifBtn.highlighted = false
        }
    }

    StatusStickersPopup {
        id: stickersPopup
        x: control.width - width - Style.current.halfPadding
        y: -height
        store: control.store
        enabled: !!control.recentStickers && !!control.stickerPackList
        recentStickers: control.recentStickers
        stickerPackList: control.stickerPackList
        onStickerSelected: {
            control.stickerSelected(hashId, packId, url)
            control.hideExtendedArea();
            messageInputField.forceActiveFocus();
        }
        onClosed: {
            stickersBtn.highlighted = false
        }
    }

    RowLayout {
        id: layout
        anchors.fill: parent
        spacing: 4

        StatusQ.StatusFlatRoundButton {
            id: chatCommandsBtn
            Layout.preferredWidth: 32
            Layout.preferredHeight: 32
            Layout.alignment: Qt.AlignBottom
            Layout.bottomMargin: 4
            icon.name: "chat-commands"
            type: StatusQ.StatusFlatRoundButton.Type.Tertiary
            visible: RootStore.isWalletEnabled && !isEdit && control.chatType === Constants.chatType.oneToOne
            enabled: !control.isContactBlocked
            onClicked: {
                chatCommandsPopup.opened ?
                            chatCommandsPopup.close() :
                            chatCommandsPopup.open()
            }
        }

        StatusQ.StatusFlatRoundButton {
            id: imageBtn
            Layout.preferredWidth: 32
            Layout.preferredHeight: 32
            Layout.alignment: Qt.AlignBottom
            Layout.bottomMargin: 4
            icon.name: "image"
            type: StatusQ.StatusFlatRoundButton.Type.Tertiary
            visible: !isEdit && control.chatType !== Constants.chatType.publicChat
            enabled: !control.isContactBlocked
            onClicked: {
                highlighted = true
                imageDialog.open()
            }
        }

        Rectangle {
            id: messageInput

            readonly property int defaultInputFieldHeight: 40

            Layout.fillWidth: true


            implicitHeight: inputLayout.implicitHeight + inputLayout.anchors.topMargin + inputLayout.anchors.bottomMargin
            implicitWidth: inputLayout.implicitWidth + inputLayout.anchors.leftMargin + inputLayout.anchors.rightMargin

            enabled: !control.isContactBlocked
            color: isEdit ? Theme.palette.statusChatInput.secondaryBackgroundColor : Style.current.inputBackground
            radius: 20

            ColumnLayout {
                id: validators
                anchors.bottom: control.imageErrorMessageLocation === StatusChatInput.ImageErrorMessageLocation.Top ? parent.top : undefined
                anchors.bottomMargin: control.imageErrorMessageLocation === StatusChatInput.ImageErrorMessageLocation.Top ? -4 : undefined
                anchors.top: control.imageErrorMessageLocation === StatusChatInput.ImageErrorMessageLocation.Bottom ? parent.bottom : undefined
                anchors.topMargin: control.imageErrorMessageLocation === StatusChatInput.ImageErrorMessageLocation.Bottom ? (isImage ? -4 : 4) : undefined
                anchors.horizontalCenter: parent.horizontalCenter
                width: parent.width
                z: 1

                StatusChatImageExtensionValidator {
                    Layout.alignment: Qt.AlignHCenter
                }
                StatusChatImageSizeValidator {
                    Layout.alignment: Qt.AlignHCenter
                }
                StatusChatImageQtyValidator {
                    Layout.alignment: Qt.AlignHCenter
                }
            }

            Rectangle {
                // Bottom right corner has different radius
                color: parent.color
                anchors.bottom: parent.bottom
                anchors.right: parent.right
                height: parent.height / 2
                width: 32
                radius: Style.current.radius
            }

            ColumnLayout {
                id: inputLayout

                anchors.fill: parent
                spacing: 4

                StatusChatInputReplyArea {
                    id: replyArea
                    visible: isReply
                    Layout.fillWidth: true
                    Layout.margins: 2
                    onCloseButtonClicked: {
                        isReply = false
                    }
                }

                StatusChatInputImageArea {
                    id: imageArea
                    Layout.fillWidth: true
                    Layout.leftMargin: Style.current.halfPadding
                    Layout.rightMargin: Style.current.halfPadding
                    visible: isImage
                    onImageClicked: Global.openImagePopup(chatImage, messageContextMenu)
                    onImageRemoved: {
                        if (control.fileUrls.length > index && control.fileUrls[index]) {
                            control.fileUrls.splice(index, 1)
                        }
                        isImage = control.fileUrls.length > 0
                        validateImages(control.fileUrls)
                    }
                }

                RowLayout {
                    Layout.fillWidth: true
                    Layout.fillHeight: true
                    spacing: Style.current.radius

                    StatusScrollView {
                        id: inputScrollView

                        Layout.fillWidth: true
                        Layout.fillHeight: true
                        Layout.leftMargin: 12
                        Layout.rightMargin: 12
                        Layout.maximumHeight: 112
                        ScrollBar.horizontal.policy: ScrollBar.AlwaysOff

                        padding: 0

                        TextArea {
                            id: messageInputField
                            objectName: "messageInputField"

                            property var lastClick: 0
                            property int cursorWhenPressed: 0

                            width: inputScrollView.availableWidth

                            textFormat: Text.RichText
                            font.pixelSize: 15
                            font.family: Style.current.baseFont.name
                            wrapMode: TextArea.Wrap
                            placeholderText: control.chatInputPlaceholder
                            placeholderTextColor: Style.current.secondaryText
                            selectByMouse: true
                            color: isEdit ? Theme.palette.directColor1 : Style.current.textColor
                            topPadding: 9
                            bottomPadding: 9
                            leftPadding: 0
                            padding: 0
                            Keys.onPressed: {
                                if (mentionsPos.length > 0) {
                                    for (var i = 0; i < mentionsPos.length; i++) {
                                        if ((messageInputField.cursorPosition === (mentionsPos[i].leftIndex))
                                                && (event.key === Qt.Key_Delete)) {
                                            messageInputField.remove(mentionsPos[i].rightIndex, mentionsPos[i].leftIndex)
                                            mentionsPos.pop(i)
                                        }
                                    }
                                }

                                keyEvent = event;
                                onKeyPress(event)
                                cursorWhenPressed = cursorPosition;
                            }
                            Keys.onReleased: onRelease(event) // gives much more up to date cursorPosition
                            Keys.onShortcutOverride: event.accepted = isUploadFilePressed(event)
                            selectionColor: Style.current.primarySelectionColor
                            persistentSelection: true
                            property var keyEvent

                            Component.onDestruction: {
                                // NOTE: Without losing focus the app crashes on apply/cancel message editing.
                                control.forceActiveFocus();
                            }

                            onCursorPositionChanged: {
                                if (mentionsPos.length > 0) {
                                    for (var i = 0; i < mentionsPos.length; i++) {
                                        if ((messageInputField.cursorPosition === (mentionsPos[i].leftIndex + 1)) && (keyEvent.key === Qt.Key_Right)) {
                                            messageInputField.cursorPosition = mentionsPos[i].rightIndex;
                                        } else if (messageInputField.cursorPosition === (mentionsPos[i].rightIndex - 1)) {
                                            if (keyEvent.key === Qt.Key_Left) {
                                                messageInputField.cursorPosition = mentionsPos[i].leftIndex;
                                            } else if ((keyEvent.key === Qt.Key_Backspace) || (keyEvent.key === Qt.Key_Delete)) {
                                                messageInputField.remove(mentionsPos[i].rightIndex, mentionsPos[i].leftIndex);
                                                mentionsPos.pop(i);
                                            }
                                        } else if (((messageInputField.cursorPosition > mentionsPos[i].leftIndex) &&
                                                    (messageInputField.cursorPosition  < mentionsPos[i].rightIndex)) &&
                                                   ((keyEvent.key === Qt.Key_Left) && ((keyEvent.modifiers & Qt.AltModifier) ||
                                                                                       (keyEvent.modifiers & Qt.ControlModifier)))) {
                                            messageInputField.cursorPosition = mentionsPos[i].leftIndex;
                                        } else if ((keyEvent.key === Qt.Key_Up) || (keyEvent.key === Qt.Key_Down)) {
                                            if (messageInputField.cursorPosition >= mentionsPos[i].leftIndex &&
                                                    messageInputField.cursorPosition <= (((mentionsPos[i].leftIndex + mentionsPos[i].rightIndex)/2))) {
                                                messageInputField.cursorPosition = mentionsPos[i].leftIndex;
                                            } else if (messageInputField.cursorPosition <= mentionsPos[i].rightIndex &&
                                                       messageInputField.cursorPosition > (((mentionsPos[i].leftIndex + mentionsPos[i].rightIndex)/2))) {
                                                messageInputField.cursorPosition = mentionsPos[i].rightIndex;
                                            }
                                        }
                                    }
                                }

                                inputScrollView.ensureVisible(cursorRectangle)
                            }

                            onTextChanged: {
                                if (length <= control.messageLimit) {
                                    var symbols = ":='xX><0O;*dB8-D#%\\";
                                    if ((length > 1) && (symbols.indexOf(getText((cursorPosition - 2), (cursorPosition - 1))) !== -1)
                                            && (!getText((cursorPosition - 7), cursorPosition).includes("http"))) {
                                        const emojis = StatusQUtils.Emoji.emojiJSON.emoji_json.filter(function (emoji) {
                                            if (emoji.aliases_ascii.includes(getText((cursorPosition - 2), cursorPosition)) ||
                                                    emoji.aliases_ascii.includes(getText((cursorPosition - 3), cursorPosition))) {
                                                var has2Chars = emoji.aliases_ascii.includes(getText((cursorPosition - 2), cursorPosition));
                                                replaceWithEmoji("", getText(cursorPosition - (has2Chars ? 2 : 3), cursorPosition), emoji.unicode);
                                            }
                                        })
                                    }
                                    if (text === "") {
                                        mentionsPos = [];
                                    }
                                } else {
                                    var removeFrom = (cursorPosition < messageLimit) ? cursorWhenPressed : messageLimit;
                                    remove(removeFrom, cursorPosition);
                                }

                                d.updateMentionsPositions()

                                messageLengthLimit.remainingChars = (messageLimit - length);
                            }

                            onReleased: function (event) {
                                const now = Date.now()
                                if (messageInputField.selectedText.trim() !== "") {
                                    // If it's a double click, just check the mouse position
                                    // If it's a mouse select, use the start and end position average)
                                    let x = now < messageInputField.lastClick + 500 ? x = event.x :
                                                                                      (messageInputField.cursorRectangle.x + event.x) / 2
                                    x -= textFormatMenu.width / 2

                                    textFormatMenu.popup(x, messageInputField.y - textFormatMenu.height - 5)
                                    messageInputField.forceActiveFocus();
                                }
                                lastClick = now
                            }

                            cursorDelegate: Rectangle {
                                color: Theme.palette.primaryColor1
                                implicitWidth: 2
                                implicitHeight: 22
                                radius: 1
                                visible: messageInputField.cursorVisible

                                SequentialAnimation on visible {
                                    loops: Animation.Infinite
                                    running: messageInputField.cursorVisible
                                    PropertyAnimation { to: false; duration: 600; }
                                    PropertyAnimation { to: true; duration: 600; }
                                }
                            }

                            StatusSyntaxHighlighter {
                                quickTextDocument: messageInputField.textDocument
                            }
                            MouseArea {
                                anchors.fill: parent
                                acceptedButtons: Qt.NoButton
                                enabled: parent.hoveredLink
                                cursorShape: parent.hoveredLink ? Qt.PointingHandCursor : Qt.IBeamCursor
                            }
                            StatusTextFormatMenu {
                                id: textFormatMenu

                                StatusChatInputTextFormationAction {
                                    wrapper: "**"
                                    icon.name: "bold"
                                    text: qsTr("Bold")
                                    selectedTextWithFormationChars: RootStore.getSelectedTextWithFormationChars(messageInputField)
                                    onActionTriggered: checked ?
                                                           unwrapSelection(wrapper, RootStore.getSelectedTextWithFormationChars(messageInputField)) :
                                                           wrapSelection(wrapper)
                                }
                                StatusChatInputTextFormationAction {
                                    wrapper: "*"
                                    icon.name: "italic"
                                    text: qsTr("Italic")
                                    selectedTextWithFormationChars: RootStore.getSelectedTextWithFormationChars(messageInputField)
                                    checked: (surroundedBy("*") && !surroundedBy("**")) || surroundedBy("***")
                                    onActionTriggered: checked ?
                                                           unwrapSelection(wrapper, RootStore.getSelectedTextWithFormationChars(messageInputField)) :
                                                           wrapSelection(wrapper)
                                }
                                StatusChatInputTextFormationAction {
                                    wrapper: "~~"
                                    icon.name: "strikethrough"
                                    text: qsTr("Strikethrough")
                                    selectedTextWithFormationChars: RootStore.getSelectedTextWithFormationChars(messageInputField)
                                    onActionTriggered: checked ?
                                                           unwrapSelection(wrapper, RootStore.getSelectedTextWithFormationChars(messageInputField)) :
                                                           wrapSelection(wrapper)
                                }
                                StatusChatInputTextFormationAction {
                                    wrapper: "`"
                                    icon.name: "code"
                                    text: qsTr("Code")
                                    selectedTextWithFormationChars: RootStore.getSelectedTextWithFormationChars(messageInputField)
                                    onActionTriggered: checked ?
                                                           unwrapSelection(wrapper, RootStore.getSelectedTextWithFormationChars(messageInputField)) :
                                                           wrapSelection(wrapper)
                                }
                                StatusChatInputTextFormationAction {
                                    wrapper: "> "
                                    icon.name: "quote"
                                    text: qsTr("Quote")
                                    checked: messageInputField.selectedText && isSelectedLinePrefixedBy(messageInputField.selectionStart, wrapper)

                                    onActionTriggered: checked
                                                       ? unprefixSelectedLine(wrapper)
                                                       : prefixSelectedLine(wrapper)
                                }
                                onClosed: {
                                    messageInputField.deselect();
                                }
                            }
                        }


                        Shortcut {
                            enabled: messageInputField.activeFocus
                            sequence: StandardKey.Bold
                            onActivated: wrapSelection("**")
                        }
                        Shortcut {
                            enabled: messageInputField.activeFocus
                            sequence: StandardKey.Italic
                            onActivated: wrapSelection("*")
                        }
                        Shortcut {
                            enabled: messageInputField.activeFocus
                            sequence: "Ctrl+Shift+Alt+C"
                            onActivated: wrapSelection("```")
                        }
                        Shortcut {
                            enabled: messageInputField.activeFocus
                            sequence: "Ctrl+Shift+C"
                            onActivated: wrapSelection("`")
                        }
                        Shortcut {
                            enabled: messageInputField.activeFocus
                            sequence: "Ctrl+Alt+-"
                            onActivated: wrapSelection("~~")
                        }
                        Shortcut {
                            enabled: messageInputField.activeFocus
                            sequence: "Ctrl+Shift+X"
                            onActivated: wrapSelection("~~")
                        }
                        Shortcut {
                            enabled: messageInputField.activeFocus
                            sequence: "Ctrl+Meta+Space"
                            onActivated: emojiBtn.clicked(null)
                        }
                    }

                    Column {
                        Layout.alignment: Qt.AlignBottom
                        Layout.bottomMargin: 3

                        StyledText {
                            id: messageLengthLimit
                            property int remainingChars: -1
                            leftPadding: Style.current.halfPadding
                            rightPadding: Style.current.halfPadding
                            visible: ((messageInputField.length >= control.messageLimitVisible) && (messageInputField.length <= control.messageLimit))
                            color: (remainingChars <= messageLimitVisible) ? Style.current.danger : Style.current.textColor
                            text: visible ? remainingChars.toString() : ""
                        }

                        Row {
                            id: actions
                            spacing: 2

                            StatusQ.StatusFlatRoundButton {
                                id: emojiBtn
                                objectName: "statusChatInputEmojiButton"
                                implicitHeight: 32
                                implicitWidth: 32
                                icon.name: "emojis"
                                icon.color: (hovered || highlighted) ? Theme.palette.primaryColor1
                                                                     : Theme.palette.baseColor1
                                type: StatusQ.StatusFlatRoundButton.Type.Tertiary
                                color: "transparent"
                                onClicked: {
                                    control.emojiPopupOpened = true

                                    togglePopup(emojiPopup, emojiBtn)
                                }
                            }

                            StatusQ.StatusFlatRoundButton {
                                id: gifBtn
                                objectName: "gifPopupButton"
                                implicitHeight: 32
                                implicitWidth: 32
                                visible: !isEdit && RootStore.isGifWidgetEnabled
                                icon.name: "gif"
                                icon.color: (hovered || highlighted) ? Theme.palette.primaryColor1
                                                                     : Theme.palette.baseColor1
                                type: StatusQ.StatusFlatRoundButton.Type.Tertiary
                                color: "transparent"
                                onClicked: togglePopup(gifPopup, gifBtn)
                            }

                            StatusQ.StatusFlatRoundButton {
                                id: stickersBtn
                                objectName: "statusChatInputStickersButton"
                                implicitHeight: 32
                                implicitWidth: 32
                                width: visible ? 32 : 0
                                icon.name: "stickers"
                                icon.color: (hovered || highlighted) ? Theme.palette.primaryColor1
                                                                     : Theme.palette.baseColor1
                                type: StatusQ.StatusFlatRoundButton.Type.Tertiary
                                visible: !isEdit && emojiBtn.visible
                                color: "transparent"
                                onClicked: togglePopup(stickersPopup, stickersBtn)
                            }
                        }
                    }
                }
            }
        }

        StatusQ.StatusButton {
            id: unblockBtn
            Layout.alignment: Qt.AlignBottom
            Layout.bottomMargin: 4
            visible: control.isContactBlocked
            text: qsTr("Unblock")
            type: StatusQ.StatusBaseButton.Type.Danger
            onClicked: function (event) {
                control.unblockChat()
            }
        }
    }

}