import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Layouts 1.15

import StatusQ 0.1
import SortFilterProxyModel 0.2

import AppLayouts.Wallet.controls 1.0

import shared.popups.walletconnect 1.0
import AppLayouts.Wallet.services.dapps 1.0
import AppLayouts.Wallet.services.dapps.types 1.0

import shared.stores 1.0
import utils 1.0

DappsComboBox {
    id: root

    required property WalletConnectService wcService

    signal pairWCReady()

    model: root.wcService.dappsModel

    onPairDapp: {
        pairWCLoader.active = true
    }

    onDisconnectDapp: (dappUrl) => {
        root.wcService.disconnectDapp(dappUrl)
    }

    Loader {
        id: pairWCLoader

        active: false

        onLoaded: {
            item.open()
            root.pairWCReady()
        }

        sourceComponent: PairWCModal {
            visible: true

            onClosed: pairWCLoader.active = false

            onPair: (uri) => {
                root.wcService.pair(uri)
                this.isPairing = true
            }
        }
    }

    Loader {
        id: connectDappLoader

        active: false

        property var dappChains: []
        property var sessionProposal: null
        property var availableNamespaces: null
        property var sessionTopic: null
        readonly property var proposalMedatada: !!sessionProposal
                                                ? sessionProposal.params.proposer.metadata 
                                                : { name: "", url: "", icons: [] }

        sourceComponent: ConnectDAppModal {
            visible: true

            onClosed: connectDappLoader.active = false
            accounts: root.wcService.validAccounts
            flatNetworks: SortFilterProxyModel {
                sourceModel: root.wcService.flatNetworks
                filters: [
                    FastExpressionFilter {
                        inverted: true
                        expression: connectDappLoader.dappChains.indexOf(chainId) === -1
                        expectedRoles: ["chainId"]
                    }
                ]
            }
            selectedAccountAddress: root.wcService.selectedAccountAddress

            dAppUrl: proposalMedatada.url
            dAppName: proposalMedatada.name
            dAppIconUrl: !!proposalMedatada.icons && proposalMedatada.icons.length > 0 ? proposalMedatada.icons[0] : ""

            onConnect: {
                root.wcService.approvePairSession(sessionProposal, selectedChains, selectedAccount)
            }

            onDecline: {
                connectDappLoader.active = false
                root.wcService.rejectPairSession(sessionProposal.id)
            }

            onDisconnect: {
                connectDappLoader.active = false
                root.wcService.disconnectSession(sessionTopic)
            }
        }
    }

    Loader {
        id: sessionRequestLoader

        active: false

        onLoaded: item.open()

        property SessionRequestResolved request: null

        sourceComponent: DAppRequestModal {
            account: request.account
            network: request.network

            dappName: request.dappName
            dappUrl: request.dappUrl
            dappIcon: request.dappIcon

            payloadData: request.data
            method: request.method
            maxFeesText: request.maxFeesText
            maxFeesEthText: request.maxFeesEthText
            enoughFunds: request.enoughFunds
            estimatedTimeText: request.estimatedTimeText

            visible: true

            onClosed: sessionRequestLoader.active = false

            onSign: {
                if (!request) {
                    console.error("Error signing: request is null")
                    return
                }
                root.wcService.requestHandler.authenticate(request)
            }

            onReject: {
                let userRejected = true
                root.wcService.requestHandler.rejectSessionRequest(request, userRejected)
                close()
            }

            Connections {
                target: root.wcService.requestHandler

                function onMaxFeesUpdated(maxFees, maxFeesWei, haveEnoughFunds, symbol) {
                    maxFeesText = `${maxFees.toFixed(2)} ${symbol}`
                    var ethStr = "?"
                    if (globalUtils) {
                        ethStr = globalUtils.wei2Eth(maxFeesWei, 9)
                    }
                    maxFeesEthText = `${ethStr} ETH`
                    enoughFunds = haveEnoughFunds
                }
                function onEstimatedTimeUpdated(minMinutes, maxMinutes) {
                    estimatedTimeText = qsTr("%1-%2mins").arg(minMinutes).arg(maxMinutes)
                }
            }
        }
    }

    Connections {
        target: root.wcService ? root.wcService.requestHandler : null

        function onSessionRequestResult(request, isSuccess) {
            if (isSuccess) {
                sessionRequestLoader.active = false
            } else {
                // TODO #14762 handle the error case
            }
        }
    }

    Connections {
        target: root.wcService

        function onConnectDApp(dappChains, sessionProposal, availableNamespaces) {
            connectDappLoader.dappChains = dappChains
            connectDappLoader.sessionProposal = sessionProposal
            connectDappLoader.availableNamespaces = availableNamespaces
            connectDappLoader.sessionTopic = null

            if (pairWCLoader.item) {
                pairWCLoader.item.close()
            }

            connectDappLoader.active = true
        }

        function onApproveSessionResult(session, err) {
            connectDappLoader.sessionTopic = session.topic

            let modal = connectDappLoader.item
            if (!!modal) {
                if (err) {
                    modal.pairFailed(session, err)
                } else {
                    modal.pairSuccessful(session)
                }
            }
        }

        function onSessionRequest(request) {
            sessionRequestLoader.request = request
            sessionRequestLoader.active = true
        }
    }
}