import QtQuick 2.13
import QtQuick.Controls 2.13
import QtQuick.Layouts 1.13
import Qt.labs.settings 1.0
import QtQuick.Controls.Styles 1.0
import QtWebEngine 1.10
import utils 1.0
import "../../../../shared"
import "../../../../shared/status"
import "../popups"
import "../controls"

Rectangle {
    id: browserHeader

    property alias favoriteComponent: favoritesBarLoader.sourceComponent
    property alias addressBar: addressBar

    readonly property int innerMargin: 12
    property var currentFavorite
    property var addNewTab: function () {}
    property string dappBrowserAccName: ""
    property string dappBrowserAccIcon: ""

    signal addNewFavoritelClicked(var xPos)

    width: parent.width
    height: barRow.height + favoritesBarLoader.height
    color: Style.current.background
    border.width: 0

    RowLayout {
        id: barRow
        width: parent.width
        height: 45
        spacing: browserHeader.innerMargin

        Menu {
            id: historyMenu
            Instantiator {
                model: currentWebView && currentWebView.navigationHistory.items
                MenuItem {
                    text: model.title
                    onTriggered: currentWebView.goBackOrForward(model.offset)
                    checkable: !enabled
                    checked: !enabled
                    enabled: model.offset
                }
                onObjectAdded: function(index, object) {
                    historyMenu.insertItem(index, object)
                }
                onObjectRemoved: function(index, object) {
                    historyMenu.removeItem(object)
                }
            }
        }

        StatusIconButton {
            id: backButton
            icon.name: "leave_chat"
            disabledColor: Style.current.lightGrey
            onClicked: currentWebView.goBack()
            onPressAndHold: {
                if (currentWebView && (currentWebView.canGoBack || currentWebView.canGoForward)){
                    historyMenu.popup(backButton.x, backButton.y + backButton.height)
                }
            }
            enabled: currentWebView && currentWebView.canGoBack
            width: 24
            height: 24
            Layout.leftMargin: browserHeader.innerMargin
            padding: 6
        }

        StatusIconButton {
            id: forwardButton
            icon.name: "leave_chat"
            iconRotation: 180
            disabledColor: Style.current.lightGrey
            onClicked: currentWebView.goForward()
            onPressAndHold: {
                if (currentWebView && (currentWebView.canGoBack || currentWebView.canGoForward)){
                    historyMenu.popup(forwardButton.x, forwardButton.y + forwardButton.height)
                }
            }
            enabled: currentWebView && currentWebView.canGoForward
            width: 24
            height: 24
            Layout.leftMargin: -browserHeader.innerMargin/2
        }

        StyledTextField {
            id: addressBar
            height: 40
            Layout.fillWidth: true
            background: Rectangle {
                color: Style.current.inputBackground
                border.color: Style.current.inputBorderFocus
                border.width: activeFocus ? 1 : 0
                radius: 20
            }
            leftPadding: Style.current.padding
            //% "Enter URL"
            placeholderText: qsTrId("enter-url")
            focus: true
            text: ""
            color: Style.current.textColor
            onActiveFocusChanged: {
                if (activeFocus) {
                    addressBar.selectAll()
                }
            }

            Keys.onPressed: {
                // TODO: disable browsing local files?  file://
                if (event.key === Qt.Key_Enter || event.key === Qt.Key_Return) {
                    if (appSettings.useBrowserEthereumExplorer !== Constants.browserEthereumExplorerNone && text.startsWith("0x")) {
                        switch (appSettings.useBrowserEthereumExplorer) {
                        case Constants.browserEthereumExplorerEtherscan:
                            if (text.length > 42) {
                                currentWebView.url = "https://etherscan.io/tx/" + text; break;
                            } else {
                                currentWebView.url = "https://etherscan.io/address/" + text; break;
                            }
                        case Constants.browserEthereumExplorerEthplorer:
                            if (text.length > 42) {
                                currentWebView.url = "https://ethplorer.io/tx/" + text; break;
                            } else {
                                currentWebView.url = "https://ethplorer.io/address/" + text; break;
                            }
                        case Constants.browserEthereumExplorerBlockchair:
                            if (text.length > 42) {
                                currentWebView.url = "https://blockchair.com/ethereum/transaction/" + text; break;
                            } else {
                                currentWebView.url = "https://blockchair.com/ethereum/address/" + text; break;
                            }
                        }
                        return
                    }
                    if (appSettings.shouldShowBrowserSearchEngine !== Constants.browserSearchEngineNone && !Utils.isURL(text) && !Utils.isURLWithOptionalProtocol(text)) {
                        switch (appSettings.shouldShowBrowserSearchEngine) {
                        case Constants.browserSearchEngineGoogle: currentWebView.url = "https://www.google.com/search?q=" + text; break;
                        case Constants.browserSearchEngineYahoo: currentWebView.url = "https://search.yahoo.com/search?p=" + text; break;
                        case Constants.browserSearchEngineDuckDuckGo: currentWebView.url = "https://duckduckgo.com/?q=" + text; break;
                        }

                        return
                    } else if (Utils.isURLWithOptionalProtocol(text)) {
                        text = "https://" + text
                    }

                    currentWebView.url = determineRealURL(text);
                }
            }

            StatusIconButton {
                id: addFavoriteBtn
                visible: !!currentWebView && !!currentWebView.url
                icon.name: !!browserHeader.currentFavorite ? "browser/favoriteActive" : "browser/favorite"
                anchors.verticalCenter: parent.verticalCenter
                anchors.right: reloadBtn.left
                anchors.rightMargin: Style.current.halfPadding
                onClicked: addNewFavoritelClicked(addFavoriteBtn.x)
                width: 24
                height: 24
            }

            StatusIconButton {
                id: reloadBtn
                icon.name: currentWebView && currentWebView.loading ? "close" : "browser/refresh"
                anchors.verticalCenter: parent.verticalCenter
                anchors.right: parent.right
                anchors.rightMargin: Style.current.halfPadding
                onClicked: currentWebView && currentWebView.loading ? currentWebView.stop() : currentWebView.reload()
                width: 24
                height: 24
            }
        }

        BrowserWalletMenu {
            id: browserWalletMenu
            y: browserHeader.height + browserHeader.anchors.topMargin
            x: parent.width - width - Style.current.halfPadding
        }

        Loader {
            active: true
            sourceComponent: currentTabConnected ? connectedBtnComponent : notConnectedBtnCompoent
        }

        Component {
            id: notConnectedBtnCompoent
            StatusIconButton {
                id: accountBtn
                icon.name: "walletIcon"
                onClicked: {
                    if (browserWalletMenu.opened) {
                        browserWalletMenu.close()
                    } else {
                        browserWalletMenu.open()
                    }
                }
                width: 24
                height: 24
                padding: 6
            }
        }



        Component {
            id: connectedBtnComponent
            StatusButton {
                id: accountBtnConnected
                icon.source: Style.svg("walletIcon")
                icon.width: 18
                icon.height: 18
                icon.color: dappBrowserAccIcon
                text: dappBrowserAccName
                implicitHeight: 32
                type: "secondary"
                onClicked: {
                    if (browserWalletMenu.opened) {
                        browserWalletMenu.close()
                    } else {
                        browserWalletMenu.open()
                    }
                }
            }
        }

        BrowserSettingsMenu {
            id: settingsMenu
            addNewTab: browserHeader.addNewTab
            x: parent.width - width
            y: parent.height
        }

        StatusIconButton {
            id: settingsMenuButton
            icon.name: "dots-icon"
            onClicked: {
                if (settingsMenu.opened) {
                    settingsMenu.close()
                } else {
                    settingsMenu.open()
                }
            }
            width: 24
            height: 24
            Layout.rightMargin: browserHeader.innerMargin
            padding: 6
        }
    }

    Loader {
        id: favoritesBarLoader
        active: appSettings.shouldShowFavoritesBar
        height: active ? item.height : 0
        anchors.top: barRow.bottom
        anchors.left: parent.left
        anchors.leftMargin: Style.current.smallPadding
        anchors.right: parent.right
        anchors.rightMargin: Style.current.smallPadding
    }
}