pay/guis/desktop/SendTransactionPane.qml

/*
 * This file is part of the Flowee project
 * Copyright (C) 2020-2024 Tom Zander <tom@flowee.org>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
import QtQuick
import QtQuick.Controls.Basic as QQC2
import QtQuick.Layouts
import QtQuick.Window
import "../Flowee" as Flowee
import "../ControlColors.js" as ControlColors
import Flowee.org.pay

Rectangle {
    id: sendPanel
    focus: true
    color: palette.window

    onActiveFocusChanged: {
        if (!activeFocus)
            return;
        /*
          The application can be started with a click on a payment link,
          in that case the link gets made available in the following property
          and we start a payment protocol with the value.
          Afterwards we reset the property to avoid the next opening of this
          screen repeating the payment.
         */
        var paymentProtcolUrl = intent.paymentUrl;
        if (paymentProtcolUrl !== "") {
            payment.targetAddress = paymentProtcolUrl;
            intent.paymentUrl = "";
        }
    }

    Payment { // the model behind the Payment logic
        id: payment
        fiatPrice: Fiat.price
        account: portfolio.current
    }
    Flickable {
        id: contentArea
        width: sendPanel.width - 20
        y: 40
        x: 10

        height: parent.height - 40
        contentHeight: mainColumn.height
        contentWidth: width
        clip: true
        Column {
            id: mainColumn
            width: parent.width
            spacing: 10

            Repeater {
                model: payment.details
                delegate: Item {
                    width: mainColumn.width
                    height: loader.height + 6

                    Loader {
                        id: loader
                        width: parent.width
                        height: status === Loader.Ready ? item.implicitHeight : 0
                        sourceComponent: {
                            if (modelData.type === Payment.PayToAddress)
                                return destinationFields;
                            if (modelData.type === Payment.InputSelector)
                                return inputFields;
                            if (modelData.type === Payment.CommentOutput)
                                return opReturnInput;
                            return null; // should never happen
                        }
                        onLoaded: item.paymentDetail = modelData
                    }

                    Rectangle {
                        id: deleteDetailButton
                        anchors.right: parent.right
                        anchors.rightMargin: 6
                        y: 6
                        width: 32
                        height: 32
                        radius: 4
                        visible: modelData.collapsable && !modelData.collapsed
                        color: palette.base
                        border.color: palette.button

                        Image {
                            source: "qrc:/edit-delete.svg"
                            width: 20
                            height: 20
                            anchors.centerIn: parent
                        }

                        MouseArea {
                            id: mouseArea
                            anchors.fill: parent
                            anchors.margins: -3
                            cursorShape: Qt.ArrowCursor
                            hoverEnabled: true
                            onClicked: okCancelDiag.visible = true;
                        }
                    }

                    Flowee.Dialog {
                        id: okCancelDiag
                        onAccepted: payment.remove(modelData);
                        title: qsTr("Confirm delete")
                        text: qsTr("Do you really want to delete this detail?")
                    }
                }
            }

            RowLayout {
                width: parent.width
                spacing: 0
                Flowee.Button {
                    text: qsTr("Add Destination")
                    onClicked: payment.addExtraOutput();
                }
                Item { Layout.fillWidth: true }
                Flowee.Button {
                    id: prepareButton
                    text: qsTr("Prepare")
                    enabled: payment.isValid

                    property QtObject portfolioUsed: null

                    onClicked: {
                        portfolioUsed = portfolio.current
                        if (payment.walletNeedsPin) {
                            passwdDialog.start()
                        } else {
                            payment.prepare();
                        }
                    }
                }
                Flowee.PasswdDialog {
                    id: passwdDialog
                    title: qsTr("Enter your PIN")

                    onAccepted: {
                        payment.decrypt(pwd);
                        if (payment.error === "")
                            payment.prepare();
                    }
                }
                Flowee.Dialog {
                    title: qsTr("Warning")
                    standardButtons: QQC2.DialogButtonBox.Ok
                    text: {
                        var warnings = payment.warnings
                        if (warnings.length === 0)
                            return "";

                        return qsTr("Payment request warnings:")
                            + "\n" + warnings.join("\n");
                    }
                    visible: text !== ""

                    onAccepted: payment.clearWarnings();
                }
            }
            Flowee.WarningLabel {
                id: warningLabel
                width: parent.width
                text: payment.error
                color: txid.color // make sure this is 'disabled' when the warning is not for this wallet.
            }

            Flowee.GroupBox {
                id: txDetails
                Layout.columnSpan: 4
                title: qsTr("Transaction Details")
                width: parent.width

                GridLayout {
                    columns: 2
                    property bool txOk: payment.txPrepared

                    Flowee.Label {
                        // no need translating this one.
                        text: "TxId:"
                        Layout.alignment: Qt.AlignRight | Qt.AlignTop
                    }
                    Flowee.LabelWithClipboard {
                        id: txid
                        text: payment.txid === "" ? qsTr("Not prepared yet") : payment.txid
                        Layout.fillWidth: true
                        // Change the color when the portfolio changed since 'prepare' was clicked.
                        color: prepareButton.portfolioUsed === portfolio.current
                                ? palette.windowText
                                : Qt.darker(palette.windowText, (Pay.useDarkSkin ? 1.6 : 0.4))
                        menuText: qsTr("Copy transaction-ID")
                    }
                    Flowee.Label {
                        text: qsTr("Fee") + ":"
                        Layout.alignment: Qt.AlignRight
                    }

                    Flowee.BitcoinAmountLabel {
                        value: !parent.txOk ? 0 : payment.assignedFee
                        colorize: false
                        color: txid.color
                    }
                    Flowee.Label {
                        text: qsTr("Transaction size") + ":"
                        Layout.alignment: Qt.AlignRight
                    }
                    Flowee.Label {
                        text: {
                            if (!parent.txOk)
                                return "";
                            var rc = payment.txSize;
                            return qsTr("%1 bytes").arg(rc)
                        }
                        color: txid.color
                    }
                    Flowee.Label {
                        text: qsTr("Fee per byte") + ":"
                        Layout.alignment: Qt.AlignRight
                    }
                    Flowee.Label {
                        text: {
                            if (!parent.txOk)
                                return "";
                            var rc = payment.assignedFee / payment.txSize;

                            var fee = rc.toFixed(3); // no more than 3 numbers behind the separator
                            fee = (fee * 1.0).toString(); // remove trailing zero's (1.000 => 1)
                            return qsTr("%1 sat/byte", "fee").arg(fee);
                        }
                        color: txid.color
                    }
                }
            }

            Flowee.DialogButtonBox {
                id: box
                width: parent.width
                standardButtons: QQC2.DialogButtonBox.Cancel | QQC2.DialogButtonBox.Ok
                onStandardButtonsChanged: {
                    var okButton = standardButton(QQC2.DialogButtonBox.Ok)
                    if (okButton !== null) {
                        okButton.text = qsTr("Send")
                        okButton.enabled = canSend
                    }
                }
                property bool canSend: payment.isValid && payment.txPrepared
                                && prepareButton.portfolioUsed === portfolio.current; // also make sure we prepared for the current portfolio.
                onCanSendChanged: setEnabled(QQC2.DialogButtonBox.Ok, canSend)
                onRejected: payment.reset();
                onAccepted: {
                    payment.markUserApproved();
                    broadcastFeedback.personalNote = payment.userComment
                    broadcastFeedback.start();
                    broadcastFeedback.takeFocus();
                }
            }
        }
    }

    // the panel that allows us to tweak the payment (add details)
    PaymentTweakingPanel {
        anchors.fill: parent
    }
    Keys.forwardTo: Flowee.ListViewKeyHandler {
        id: listViewKeyHandler
    }

    Flowee.BroadcastFeedback {
        id: broadcastFeedback
        anchors.leftMargin: 0
        anchors.rightMargin: 0
        fullScreen: true

        bitcoinAmount: payment.paymentAmount
        fiatPrice: payment.fiatPrice
        targetAddress: payment.niceAddress
        status: payment.broadcastStatus
        processNote: function process(note) {
            payment.userComment = note
        }

        onCloseButtonPressed: {
            payment.reset();
            reset();
        }
    }

    // ============= Payment components  ===============

    /*
     * Destination.
     * The payment-output (address based) component.
     */
    Component {
        id: destinationFields
        Flowee.GroupBox {
            id: destinationPane
            property QtObject paymentDetail: null

            collapsable: paymentDetail.collapsable
            onEffectiveCollapsedChanged: paymentDetail.collapsed = effectiveCollapsed
            collapsed: paymentDetail.collapsed
            title: qsTr("Destination")
            summary: {
                var ad = paymentDetail.address
                if (ad === "")
                    ad = "\'\'";
                if (paymentDetail.fiatFollows) {
                    if (paymentDetail.maxSelected)
                        var amount = qsTr("Max available", "The maximum balance available")
                    else
                        amount = Pay.amountToStringPretty(paymentDetail.paymentAmount)
                                + " " + Pay.unitName;
                }
                else {
                    amount = Fiat.formattedPrice(paymentDetail.paymentAmountFiat)
                }

                return qsTr("%1 to %2", "summary text to pay X-euro to address M")
                            .arg(amount).arg(ad);
            }

            Item {
                implicitWidth: parent.width
                implicitHeight: Math.max(contentColumn.height, warningArea.visible ? warningArea.height : 0)
                ColumnLayout {
                    id: contentColumn
                    width: parent.width
                    RowLayout {
                        width: parent.width
                        Flowee.TextField {
                            id: destination
                            focus: true
                            property var addressType: Pay.identifyString(text);
                            Layout.fillWidth: true
                            Layout.columnSpan: 3
                            placeholderText: enabled ? qsTr("Enter Bitcoin Cash Address") : ""
                            text: destinationPane.paymentDetail.address
                            onTextChanged: {
                                destinationPane.paymentDetail.address = text
                                addressInfo.createInfo();
                            }
                            color: {
                                if (!activeFocus && text !== "" && !addressInfo.addressOk)
                                    return mainWindow.errorRed
                                return palette.windowText
                            }
                            enabled: paymentDetail.editable
                        }
                        Flowee.Label {
                            color: "green"
                            font.pixelSize: 24
                            text: addressInfo.addressOk ? "✔" : " "
                        }
                    }
                    Flowee.LabelWithClipboard {
                        visible: paymentDetail.address !== text
                        Layout.fillWidth: true
                        text: paymentDetail.formattedTarget
                        horizontalAlignment: Qt.AlignRight
                        font.italic: true
                        menuText: qsTr("Copy Address")
                    }
                    Flowee.AddressInfoWidget {
                        id: addressInfo
                        width: parent.width
                        addressType: destination.addressType
                    }

                    Flowee.Label {
                        id: payAmount
                        text: qsTr("Amount") + ":"
                    }
                    RowLayout {
                        Flowee.FiatValueField {
                            id: fiatValueField
                            visible: Fiat.price > 0
                            onValueEdited: destinationPane.paymentDetail.paymentAmountFiat = value
                            value: destinationPane.paymentDetail.paymentAmountFiat
                        }
                        Flowee.CheckBox {
                            id: amountSelector
                            sliderOnIndicator: false
                            visible: Fiat.price > 0
                            activeFocusOnTab: false
                            checked: destinationPane.paymentDetail.fiatFollows
                            onToggled: {
                                var t = checked ? bitcoinValueField : fiatValueField
                                t.forceActiveFocus()
                            }
                        }
                        Flowee.BitcoinValueField {
                            id: bitcoinValueField
                            value: destinationPane.paymentDetail.paymentAmount
                            onValueEdited: destinationPane.paymentDetail.paymentAmount = value
                        }
                        Flowee.Button {
                            id: sendAll
                            visible: destinationPane.paymentDetail.maxAllowed
                            text: qsTr("Max")
                            checkable: true
                            checked: destinationPane.paymentDetail.maxSelected
                            onClicked: destinationPane.paymentDetail.maxSelected = checked
                        }
                    }
                }

                Item {
                    id: warningArea
                    // BTC address entered warning.
                    visible: (destination.addressType === Wallet.LegacySH || destination.addressType === Wallet.LegacyPKH)
                             && paymentDetail.forceLegacyOk === false;

                    width: parent.width - 40
                    height: warningColumn.height + 20 + destination.height
                    Rectangle {
                        anchors.fill: warningColumn
                        anchors.margins: -7
                        color: palette.window
                        border.width: 2
                        border.color: mainWindow.errorRed
                        radius: 10
                    }
                    Flowee.ArrowPoint {
                        x: 20
                        anchors.bottom: warningColumn.top
                        anchors.bottomMargin: 4
                        rotation: -90
                        color: mainWindow.errorRed
                    }

                    Column {
                        id: warningColumn
                        x: 10
                        y: destination.height + 10
                        width: parent.width
                        spacing: 10
                        Flowee.Label {
                            font.bold: true
                            font.pixelSize: warning.font.pixelSize * 1.2
                            text: qsTr("Warning")
                        }
                        Flowee.Label {
                            id: warning
                            width: parent.width
                            text: qsTr("This is a BTC address, which is an incompatible coin. Your funds could get lost and Flowee will have no way to recover them. Are you sure this is the right address?")
                            wrapMode: Text.WrapAtWordBoundaryOrAnywhere
                        }

                        RowLayout {
                            width: parent.width
                            Item {
                                width: 1; height: 1
                                Layout.fillWidth: true
                            }

                            Flowee.Button {
                                text: qsTr("Continue")
                                onClicked: paymentDetail.forceLegacyOk = true
                            }
                            Flowee.Button {
                                text: qsTr("Cancel")
                                onClicked: destination.text = ""
                            }
                        }
                    }
                }
            }
        }
    }

    /*
     * The input selector component.
     */
    Component {
        id: inputFields
        Flowee.GroupBox {
            id: inputsPane
            collapsable: paymentDetail.collapsable
            collapsed: paymentDetail.collapsed
            onEffectiveCollapsedChanged: paymentDetail.collapsed = effectiveCollapsed
            property QtObject paymentDetail: null
            title: qsTr("Coin Selector")
            summary: qsTr("Selected %1 %2 in %3 coins", "selected 2 BCH in 5 coins", paymentDetail.selectedCount)
                            .arg(Pay.amountToStringPretty(paymentDetail.selectedValue))
                            .arg(Pay.unitName)
                            .arg(paymentDetail.selectedCount)

            // make this tabs arrow-navigation go to our coinsListView.
            Component.onCompleted: listViewKeyHandler.target = coinsListView


            columns: 4
            Flowee.Label {
                text: qsTr("Total", "Number of coins") + ":"
            }
            Flowee.Label {
                text: coinsListView.count
                Layout.fillWidth: true
            }
            Flowee.Label {
                text: qsTr("Needed") +":"
            }
            Flowee.BitcoinAmountLabel {
                id: neededAmountLabel
                value: payment.paymentAmount
                Layout.fillWidth: true
                colorize: false
            }
            // next row
            Flowee.Label {
                text: qsTr("Selected") + ":"
            }
            Flowee.Label {
                text: inputsPane.paymentDetail.selectedCount
                Layout.fillWidth: true
            }
            Flowee.Label {
                text: qsTr("Value") + ":"
            }
            Flowee.BitcoinAmountLabel {
                value: inputsPane.paymentDetail.selectedValue
                Layout.fillWidth: true
                colorize: false
            }

            // next row
            ListView {
                id: coinsListView
                clip: true
                Layout.columnSpan: 4
                Layout.fillWidth: true
                implicitHeight: {
                    var ch = contentHeight
                    var suggested = contentArea.height * 0.7
                    if (ch < 0 || suggested < ch)
                        return suggested
                    return ch
                }
                model: inputsPane.paymentDetail.coins

                property bool menuIsOpen: false

                delegate: Rectangle {
                    width: ListView.view.width - 5
                    height: mainText.height + ageLabel.height + 12
                    color: index %2 == 0 ? palette.alternateBase : palette.base

                    Rectangle {
                        id: lockedRect
                        color: Pay.useDarkSkin ? "#002558" : "#1a6ae2"
                        anchors.fill: parent
                        visible: locked // if the UTXO is user-locked

                        QQC2.ToolTip {
                            delay: 600
                            text: qsTr("Locked coins will never be used for payments. Right-click for menu.")
                            visible: model.locked && rowMouseArea.containsMouse
                        }
                    }

                    Flowee.CheckBox {
                        y: 6
                        id: selectedBox
                        checked: model.selected
                        visible: !lockedRect.visible
                        enabled: visible
                    }
                    Flowee.Label {
                        id: mainText
                        y: 6
                        anchors.right: amountLabel.left
                        anchors.left: parent.left
                        anchors.leftMargin: 50
                        text: {
                            var fancy = cloakedAddress;
                            if (typeof fancy != "undefined")
                                return fancy;
                            return address;
                        }

                        elide: Flowee.Label.ElideRight
                    }
                    Flowee.BitcoinAmountLabel {
                        id: amountLabel
                        value: model.value
                        anchors.baseline: mainText.baseline
                        anchors.right: cfIcon.visible ? cfIcon.left : parent.right
                        // only HD wallets can use this
                        anchors.rightMargin: portfolio.current.isHDWallet ? 30 : 0
                        colorize: false
                        fiatWidth: Pay.isMainChain ? 90 : 0
                    }
                    Flowee.Label {
                        id: ageLabel
                        text: qsTr("Age") + ": " + age
                        anchors.left: mainText.left
                        anchors.top: mainText.bottom
                        font.pixelSize: mainText.font.pixelSize * 0.8
                    }
                    MouseArea {
                        id: rowMouseArea
                        anchors.fill: parent
                        acceptedButtons: Qt.LeftButton | Qt.RightButton
                        hoverEnabled: locked

                        onClicked: (mouse)=> {
                            // make it easy for the user to close a menu with either mouse
                            // button without instantly triggering another action.
                            if (coinsListView.menuIsOpen) {
                                coinsListView.menuIsOpen = false
                                return;
                            }
                            if (mouse.button === Qt.LeftButton) {
                                if (!model.locked) {
                                    var willCheck = !selectedBox.checked
                                    selectedBox.checked = willCheck
                                    inputsPane.paymentDetail.setRowIncluded(index, willCheck)
                                }
                            }
                            else {
                                coinsListView.menuIsOpen = true
                                // Make sure that the menu
                                // opens where we clicked.
                                mousePos.x = mouse.x
                                mousePos.y = mouse.y
                                lockingMenu.open();
                            }
                        }
                        Item {
                            id: mousePos
                            width: 1; height: 1
                            QQC2.Menu {
                                id: lockingMenu
                                QQC2.MenuItem {
                                    text: selectedBox.checked ? qsTr("Unselect All") : qsTr("Select All")
                                    onClicked: {
                                        coinsListView.menuIsOpen = false
                                        if (selectedBox.checked)
                                            inputsPane.paymentDetail.unselectAll();
                                        else
                                            inputsPane.paymentDetail.selectAll();
                                    }
                                }
                                QQC2.MenuItem {
                                    text: locked ? qsTr("Unlock coin") : qsTr("Lock coin")
                                    onClicked: {
                                        inputsPane.paymentDetail.setOutputLocked(index, !locked)
                                        coinsListView.menuIsOpen = false
                                    }
                                }
                                QQC2.MenuItem {
                                    text: qsTr("Copy Address")
                                    onClicked: Pay.copyToClipboard(Pay.chainPrefix + address);
                                }
                            }
                        }
                    }
                    Flowee.CFIcon {
                        id: cfIcon
                        anchors.right: parent.right
                        anchors.verticalCenter: mainText.verticalCenter
                        visible: model.fused
                    }
                }
            }
        }
    }

    /*
     * Op-Return comment / data field.
     */
    Component {
        id: opReturnInput
        Flowee.GroupBox {
            property QtObject paymentDetail: null

            collapsable: paymentDetail.collapsable
            onEffectiveCollapsedChanged: paymentDetail.collapsed = effectiveCollapsed
            collapsed: paymentDetail.collapsed
            title: qsTr("Public-comment")
            columns: 2

            Flowee.Label {
                wrapMode: Text.WrapAtWordBoundaryOrAnywhere
                Layout.columnSpan: 2
                text: {
                    if (paymentDetail.editable) // user-created.
                        return qsTr("Add a comment you want to include in the transaction, visible for everyone.")
                    return qsTr("Custom message, to be included in the transaction.")
                }
                font.italic: true
            }
            Flowee.Label {
                text: qsTr("Text") + ":"
            }
            Flowee.TextField {
                id: textData
                Layout.fillWidth: true
                text: paymentDetail.editable ? paymentDetail.commentString : paymentDetail.preview
                enabled: paymentDetail.editable
                onTextChanged:  if (paymentDetail.editable) paymentDetail.commentString = text
            }
            Flowee.Label {
                text: qsTr("Size")+ ":"
            }
            Flowee.Label {
                text: paymentDetail.size
            }
        }
    }
}