import QtQuick 2.14
import QtQuick.Layouts 1.3
import QtQuick.Controls 2.14
import QtQml.StateMachine 1.14 as DSM

import utils 1.0
import shared 1.0
import shared.stores 1.0 as SharedStores
import shared.stores.send 1.0

import AppLayouts.Wallet.stores 1.0

import "../stores"

Item {
    id: ensView

    property EnsUsernamesStore ensUsernamesStore
    property WalletAssetsStore walletAssetsStore

    property ContactsStore contactsStore
    property SharedStores.NetworkConnectionStore networkConnectionStore
    required property TransactionStore transactionStore

    property int profileContentWidth
    property bool showSearchScreen: false
    property string addedUsername: ""
    property string selectedUsername: ""
    property string selectedChainId: ""

    signal next(output: string)
    signal back()
    signal done(ensUsername: string)
    signal connect(ensUsername: string)
    signal changePubKey(ensUsername: string)
    signal goToWelcome();
    signal goToList();

    Layout.fillHeight: true
    Layout.fillWidth: true
    clip: true

    DSM.StateMachine {
        id: stateMachine
        initialState: ensView.ensUsernamesStore.ensUsernamesModel.count > 0 ? listState : welcomeState
        running: true

        DSM.State {
            id: welcomeState
            onEntered: loader.sourceComponent = welcome

            DSM.SignalTransition {
                targetState: searchState
                signal: next
            }
            DSM.SignalTransition {
                targetState: listState
                signal: goToList
            }
        }

        DSM.State {
            id: searchState
            onEntered: loader.sourceComponent = search
            DSM.SignalTransition {
                targetState: tAndCState
                signal: next
                guard: output === "available"
            }
            DSM.SignalTransition {
                targetState: addedState
                signal: connect
            }
            DSM.SignalTransition {
                targetState: listState
                signal: goToList
            }
            DSM.SignalTransition {
                targetState: welcomeState
                signal: goToWelcome
            }
            DSM.SignalTransition {
                targetState: ensConnectedState
                signal: done
            }
        }

        DSM.State {
            id: addedState
            onEntered: {
                loader.sourceComponent = added;
                loader.item.ensUsername = addedUsername;
            }
            DSM.SignalTransition {
                targetState: listState
                signal: next
            }
            DSM.SignalTransition {
                targetState: listState
                signal: goToList
            }
            DSM.SignalTransition {
                targetState: welcomeState
                signal: goToWelcome
            }
        }

        DSM.State {
            id: listState
            onEntered: {
                loader.sourceComponent = list;
            }
            DSM.SignalTransition {
                targetState: searchState
                signal: next
                guard: output === "search"
            }
            DSM.SignalTransition {
                targetState: detailsState
                signal: next
                guard: output === "details"
            }
            DSM.SignalTransition {
                targetState: listState
                signal: goToList
            }
            DSM.SignalTransition {
                targetState: welcomeState
                signal: goToWelcome
            }
        }

        DSM.State {
            id: detailsState
            onEntered: {
                loader.sourceComponent = details;
            }
            DSM.SignalTransition {
                targetState: listState
                signal: back
            }
            DSM.SignalTransition {
                targetState: listState
                signal: goToList
            }
            DSM.SignalTransition {
                targetState: welcomeState
                signal: goToWelcome
            }
            DSM.SignalTransition {
                targetState: ensReleasedState
                signal: done
            }
        }

        DSM.State {
            id: tAndCState
            onEntered:loader.sourceComponent = termsAndConditions
            DSM.SignalTransition {
                targetState: listState
                signal: goToList
            }
            DSM.SignalTransition {
                targetState: welcomeState
                signal: goToWelcome
            }
            DSM.SignalTransition {
                targetState: listState
                signal: back
            }
            DSM.SignalTransition {
                targetState: listState
                signal: back
            }
            DSM.SignalTransition {
                targetState: ensRegisteredState
                signal: done
            }
        }

        DSM.State {
            id: ensRegisteredState
            onEntered:loader.sourceComponent = ensRegistered
            DSM.SignalTransition {
                targetState: listState
                signal: next
            }
        }

        DSM.State {
            id: ensReleasedState
            onEntered:loader.sourceComponent = ensReleased
            DSM.SignalTransition {
                targetState: listState
                signal: next
            }
        }

        DSM.State {
            id: ensConnectedState
            onEntered:loader.sourceComponent = ensConnected
            DSM.SignalTransition {
                targetState: listState
                signal: next
            }
        }
    }

    Loader {
        id: loader
        anchors.fill: parent
    }

    Component {
        id: welcome
        EnsWelcomeView {
            username: ensView.ensUsernamesStore.username
            onStartBtnClicked: next(null)
            profileContentWidth: ensView.profileContentWidth
            startButtonEnabled: ensView.networkConnectionStore.ensNetworkAvailable
            tooltipText: ensView.networkConnectionStore.ensNetworkUnavailableText
        }
    }

    Component {
        id: search
        EnsSearchView {
            ensUsernamesStore: ensView.ensUsernamesStore
            contactsStore: ensView.contactsStore
            transactionStore: ensView.transactionStore
            profileContentWidth: ensView.profileContentWidth
            onContinueClicked: {
                if(output === "connected"){
                    connect(username)
                } else {
                    selectedUsername = username;
                    next(output);
                }
            }
            onUsernameUpdated: {
                selectedUsername = username;
                done(username);
            }
        }
    }

    Component {
        id: termsAndConditions
        EnsTermsAndConditionsView {
            ensUsernamesStore: ensView.ensUsernamesStore
            contactsStore: ensView.contactsStore
            transactionStore: ensView.transactionStore
            walletAssetsStore: ensView.walletAssetsStore
            username: selectedUsername
            onBackBtnClicked: back();
            onUsernameRegistered: done(userName);
        }
    }

    Component {
        id: added
        EnsAddedView {
            onOkBtnClicked: next(null)
        }
    }

    Component {
        id: ensRegistered
        EnsRegisteredView {
            ensUsername: selectedUsername
            onOkBtnClicked: next(null)
        }
    }

    Component {
        id: ensReleased
        EnsReleasedView {
            ensUsername: selectedUsername
            onOkBtnClicked: next(null)
        }
    }

    Component {
        id: ensConnected
        EnsConnectedView {
            ensUsername: selectedUsername
            onOkBtnClicked: next(null)
        }
    }

    Component {
        id: list
        EnsListView {
            ensUsernamesStore: ensView.ensUsernamesStore

            profileContentWidth: ensView.profileContentWidth
            onAddBtnClicked: next("search")
            onSelectEns: {
                ensView.ensUsernamesStore.ensDetails(chainId, username)
                selectedUsername = username
                selectedChainId = chainId
                next("details")
            }
        }
    }

    Component {
        id: details
        EnsDetailsView {
            ensUsernamesStore: ensView.ensUsernamesStore
            contactsStore: ensView.contactsStore
            transactionStore: ensView.transactionStore
            username: selectedUsername
            chainId: selectedChainId
            onBackBtnClicked: back()
            onUsernameReleased: {
                selectedUsername = username
                selectedChainId = chainId
                done(username)
            }
        }
    }

    Connections {
        target: ensView
        function onConnect(ensUsername: string) {
            addedUsername = ensUsername;
        }
    }

    Connections {
        target: ensView.ensUsernamesStore.ensUsernamesModule
        function onTransactionCompleted(success: bool, txHash: string, username: string, trxType: string) {
            let title = ""
            switch(trxType){
            case "RegisterENS":
                title = !success ?
                            qsTr("ENS Registration failed")
                          :
                            qsTr("ENS Registration completed");
                break;
            case "SetPubKey":
                title = !success ?
                            qsTr("Updating ENS pubkey failed")
                          :
                            qsTr("Updating ENS pubkey completed");
                break;
            default:
                console.error("unknown transaction type: ", trxType);
                return
            }

            let icon = "block-icon";
            let ephType = Constants.ephemeralNotificationType.normal;
            if (success) {
                icon = "check-circle";
                ephType = Constants.ephemeralNotificationType.success;
            }

            let url = `${ensView.ensUsernamesStore.getEtherscanLink()}/${txHash}`;
            Global.displayToastMessage(qsTr("Transaction pending..."),
                                       qsTr("View on etherscan"),
                                       icon,
                                       false,
                                       ephType,
                                       url)
        }
    }
}