import QtQuick
import QtQuick.Controls
import QtQuick.Effects
import Quickshell
import Quickshell.Io
import qs.Common
import qs.Services
import qs.Widgets

DankModal {

    id: clipboardHistoryModal

    property bool isVisible: false
    property int totalCount: 0
    property var activeTheme: Theme
    property bool showClearConfirmation: false
    property var clipboardEntries: []
    property string searchText: ""

    function updateFilteredModel() {
        filteredClipboardModel.clear();
        for (let i = 0; i < clipboardModel.count; i++) {
            const entry = clipboardModel.get(i).entry;
            if (searchText.trim().length === 0) {
                filteredClipboardModel.append({
                    "entry": entry
                });
            } else {
                const content = getEntryPreview(entry).toLowerCase();
                if (content.includes(searchText.toLowerCase()))
                    filteredClipboardModel.append({
                    "entry": entry
                });

            }
        }
        clipboardHistoryModal.totalCount = filteredClipboardModel.count;
    }

    function toggle() {
        if (isVisible)
            hide();
        else
            show();
    }

    function show() {
        clipboardHistoryModal.isVisible = true;
        initializeThumbnailSystem();
        refreshClipboard();
        
    }

    function hide() {
        clipboardHistoryModal.isVisible = false;
        clipboardHistoryModal.searchText = "";
        cleanupTempFiles();
    }

    function initializeThumbnailSystem() {
        // No initialization needed - using direct image display
    }

    function cleanupTempFiles() {
        Quickshell.execDetached(["sh", "-c", "rm -f /tmp/clipboard_*.png"]);
    }

    function generateThumbnails() {
        // No thumbnail generation needed - using direct image display
    }


    function refreshClipboard() {
        clipboardProcess.running = true;
    }

    function copyEntry(entry) {
        const entryId = entry.split('\t')[0];
        Quickshell.execDetached(["sh", "-c", `cliphist decode ${entryId} | wl-copy`]);
        
        ToastService.showInfo("Copied to clipboard");
        clipboardHistoryModal.hide();
    }

    function deleteEntry(entry) {
        
        deleteProcess.command = ["sh", "-c", `echo '${entry.replace(/'/g, "'\\''")}' | cliphist delete`];
        deleteProcess.running = true;
    }

    function clearAll() {
        clearProcess.running = true;
    }

    function getEntryPreview(entry) {
        let content = entry.replace(/^\s*\d+\s+/, "");
        if (content.includes("image/") || content.includes("binary data") || /\.(png|jpg|jpeg|gif|bmp|webp)/i.test(content)) {
            const dimensionMatch = content.match(/(\d+)x(\d+)/);
            if (dimensionMatch)
                return `Image ${dimensionMatch[1]}×${dimensionMatch[2]}`;

            const typeMatch = content.match(/\b(png|jpg|jpeg|gif|bmp|webp)\b/i);
            if (typeMatch)
                return `Image (${typeMatch[1].toUpperCase()})`;

            return "Image";
        }
        if (content.length > 100)
            return content.substring(0, 100) + "...";

        return content;
    }

    function getEntryType(entry) {
        if (entry.includes("image/") || entry.includes("binary data") || /\.(png|jpg|jpeg|gif|bmp|webp)/i.test(entry) || /\b(png|jpg|jpeg|gif|bmp|webp)\b/i.test(entry))
            return "image";

        if (entry.length > 200)
            return "long_text";

        return "text";
    }


    visible: isVisible
    width: 650
    height: 550
    keyboardFocus: "ondemand"
    backgroundColor: Theme.popupBackground()
    cornerRadius: Theme.cornerRadiusLarge
    borderColor: Theme.outlineMedium
    borderWidth: 1
    enableShadow: true
    onBackgroundClicked: {
        hide();
    }

    DankModal {
        id: clearConfirmDialog

        visible: showClearConfirmation
        width: 350
        height: 150
        keyboardFocus: "ondemand"
        onBackgroundClicked: {
            showClearConfirmation = false;
        }

        content: Component {
            Item {
                anchors.fill: parent

                Column {
                    anchors.centerIn: parent
                    width: parent.width - Theme.spacingM * 2
                    spacing: Theme.spacingM

                    StyledText {
                        text: "Clear All History?"
                        font.pixelSize: Theme.fontSizeLarge
                        color: Theme.surfaceText
                        font.weight: Font.Medium
                        anchors.horizontalCenter: parent.horizontalCenter
                    }

                    StyledText {
                        text: "This will permanently delete all clipboard history."
                        font.pixelSize: Theme.fontSizeMedium
                        color: Theme.surfaceVariantText
                        anchors.horizontalCenter: parent.horizontalCenter
                        wrapMode: Text.WordWrap
                        width: parent.width
                        horizontalAlignment: Text.AlignHCenter
                    }

                    Row {
                        anchors.horizontalCenter: parent.horizontalCenter
                        spacing: Theme.spacingM

                        Rectangle {
                            width: 100
                            height: 40
                            radius: Theme.cornerRadius
                            color: cancelClearButton.containsMouse ? Theme.surfaceTextPressed : Theme.surfaceVariantAlpha

                            StyledText {
                                text: "Cancel"
                                font.pixelSize: Theme.fontSizeMedium
                                color: Theme.surfaceText
                                font.weight: Font.Medium
                                anchors.centerIn: parent
                            }

                            MouseArea {
                                id: cancelClearButton

                                anchors.fill: parent
                                hoverEnabled: true
                                cursorShape: Qt.PointingHandCursor
                                onClicked: showClearConfirmation = false
                            }

                        }

                        Rectangle {
                            width: 100
                            height: 40
                            radius: Theme.cornerRadius
                            color: confirmClearButton.containsMouse ? Theme.errorPressed : Theme.error

                            StyledText {
                                text: "Clear All"
                                font.pixelSize: Theme.fontSizeMedium
                                color: Theme.primaryText
                                font.weight: Font.Medium
                                anchors.centerIn: parent
                            }

                            MouseArea {
                                id: confirmClearButton

                                anchors.fill: parent
                                hoverEnabled: true
                                cursorShape: Qt.PointingHandCursor
                                onClicked: {
                                    clearAll();
                                    showClearConfirmation = false;
                                    hide();
                                }
                            }

                        }

                    }

                }

            }

        }

    }

    ListModel {
        id: clipboardModel
    }

    ListModel {
        id: filteredClipboardModel
    }

    Process {
        id: clipboardProcess

        command: ["cliphist", "list"]
        running: false

        stdout: StdioCollector {
            onStreamFinished: {
                clipboardModel.clear();
                const lines = text.trim().split('\n');
                for (const line of lines) {
                    if (line.trim().length > 0)
                        clipboardModel.append({
                        "entry": line
                    });

                }
                updateFilteredModel();
            }
        }

    }

    Process {
        id: deleteProcess

        running: false
        onExited: (exitCode) => {
            if (exitCode === 0)
                refreshClipboard();
            else
                console.warn("Failed to delete clipboard entry");
        }
    }


    Process {
        id: clearProcess

        command: ["cliphist", "wipe"]
        running: false
        onExited: (exitCode) => {
            if (exitCode === 0) {
                clipboardModel.clear();
                filteredClipboardModel.clear();
                totalCount = 0;
            } else {
                
            }
        }
    }






    IpcHandler {
        function open() {
            
            clipboardHistoryModal.show();
            return "CLIPBOARD_OPEN_SUCCESS";
        }

        function close() {
            
            clipboardHistoryModal.hide();
            return "CLIPBOARD_CLOSE_SUCCESS";
        }

        function toggle() {
            
            clipboardHistoryModal.toggle();
            return "CLIPBOARD_TOGGLE_SUCCESS";
        }

        target: "clipboard"
    }

    content: Component {
        Column {
            anchors.fill: parent
            anchors.margins: Theme.spacingL
            spacing: Theme.spacingL
            focus: true
            Keys.onPressed: function(event) {
                if (event.key === Qt.Key_Escape) {
                    hide();
                    event.accepted = true;
                }
            }

            Item {
                width: parent.width
                height: 40

                Row {
                    anchors.left: parent.left
                    anchors.verticalCenter: parent.verticalCenter
                    spacing: Theme.spacingM

                    DankIcon {
                        name: "content_paste"
                        size: Theme.iconSize
                        color: Theme.primary
                        anchors.verticalCenter: parent.verticalCenter
                    }

                    StyledText {
                        text: `Clipboard History (${totalCount})`
                        font.pixelSize: Theme.fontSizeLarge
                        color: Theme.surfaceText
                        font.weight: Font.Medium
                        anchors.verticalCenter: parent.verticalCenter
                    }

                }

                Row {
                    anchors.right: parent.right
                    anchors.verticalCenter: parent.verticalCenter
                    spacing: Theme.spacingS

                    DankActionButton {
                        iconName: "delete_sweep"
                        iconSize: Theme.iconSize
                        iconColor: Theme.error
                        hoverColor: Theme.errorHover
                        onClicked: {
                            showClearConfirmation = true;
                        }
                    }

                    DankActionButton {
                        iconName: "close"
                        iconSize: Theme.iconSize - 4
                        iconColor: Theme.surfaceText
                        hoverColor: Theme.errorHover
                        onClicked: hide()
                    }

                }

            }

            DankTextField {
                id: searchField

                width: parent.width
                placeholderText: "Search clipboard history..."
                leftIconName: "search"
                showClearButton: true
                onTextChanged: {
                    clipboardHistoryModal.searchText = text;
                    updateFilteredModel();
                }

                Connections {
                    function onOpened() {
                        searchField.forceActiveFocus();
                    }

                    function onDialogClosed() {
                        searchField.clearFocus();
                    }

                    target: clipboardHistoryModal
                }

            }

            Rectangle {
                width: parent.width
                height: parent.height - 110
                radius: Theme.cornerRadiusLarge
                color: Theme.surfaceLight
                border.color: Theme.outlineLight
                border.width: 1
                clip: true

                ListView {
                    id: clipboardListView

                    anchors.fill: parent
                    anchors.margins: Theme.spacingS
                    clip: true
                    model: filteredClipboardModel
                    spacing: Theme.spacingXS
                    
                    // Enhanced native kinetic scrolling - faster for both touchpad and mouse
                    interactive: true
                    flickDeceleration: 1000      // Lower = more momentum, longer scrolling
                    maximumFlickVelocity: 8000   // Higher = faster maximum scroll speed
                    boundsBehavior: Flickable.DragAndOvershootBounds
                    boundsMovement: Flickable.FollowBoundsBehavior
                    pressDelay: 0
                    flickableDirection: Flickable.VerticalFlick

                    StyledText {
                        text: "No clipboard entries found"
                        anchors.centerIn: parent
                        font.pixelSize: Theme.fontSizeMedium
                        color: Theme.surfaceVariantText
                        visible: filteredClipboardModel.count === 0
                    }

                    ScrollBar.vertical: ScrollBar {
                        policy: ScrollBar.AsNeeded
                    }

                    ScrollBar.horizontal: ScrollBar {
                        policy: ScrollBar.AlwaysOff
                    }

                    delegate: Rectangle {
                        property string entryType: getEntryType(model.entry)
                        property string entryPreview: getEntryPreview(model.entry)
                        property int entryIndex: index + 1
                        property string entryData: model.entry
                        property alias thumbnailImageSource: thumbnailImageSource

                        width: clipboardListView.width
                        height: Math.max(entryType === "image" ? 72 : 60, contentText.contentHeight + Theme.spacingL)
                        radius: Theme.cornerRadius
                        color: mouseArea.containsMouse ? Theme.primaryHover : Theme.primaryBackground
                        border.color: Theme.outlineStrong
                        border.width: 1

                        Row {
                            anchors.fill: parent
                            anchors.margins: Theme.spacingM
                            anchors.rightMargin: Theme.spacingS // Reduced right margin
                            spacing: Theme.spacingL

                            Rectangle {
                                width: 24
                                height: 24
                                radius: 12
                                color: Theme.primarySelected
                                anchors.verticalCenter: parent.verticalCenter

                                StyledText {
                                    anchors.centerIn: parent
                                    text: entryIndex.toString()
                                    font.pixelSize: Theme.fontSizeSmall
                                    font.weight: Font.Bold
                                    color: Theme.primary
                                }

                            }

                            Row {
                                anchors.verticalCenter: parent.verticalCenter
                                width: parent.width - 68 // Account for index (24) + spacing (16) + delete button (32) - small margin
                                spacing: Theme.spacingM

                                Item {
                                    width: entryType === "image" ? 48 : Theme.iconSize
                                    height: entryType === "image" ? 48 : Theme.iconSize
                                    anchors.verticalCenter: parent.verticalCenter

                                    CachingImage {
                                        id: thumbnailImageSource
                                        anchors.fill: parent
                                        property string entryId: model.entry.split('\t')[0]
                                        source: entryType === "image" && imageLoader.imageData ? `data:image/png;base64,${imageLoader.imageData}` : ""
                                        fillMode: Image.PreserveAspectCrop
                                        smooth: true
                                        cache: true
                                        visible: false // Hide the original image
                                        asynchronous: true
                                        
                                        Process {
                                            id: imageLoader
                                            property string imageData: ""
                                            
                                            command: ["sh", "-c", `cliphist decode ${thumbnailImageSource.entryId} | base64 -w 0`]
                                            running: entryType === "image"
                                            
                                            stdout: StdioCollector {
                                                onStreamFinished: {
                                                    imageLoader.imageData = text.trim();
                                                }
                                            }
                                        }
                                    }

                                    MultiEffect {
                                        anchors.fill: parent
                                        anchors.margins: 2
                                        source: thumbnailImageSource
                                        maskEnabled: true
                                        maskSource: clipboardCircularMask
                                        visible: entryType === "image" && thumbnailImageSource.status === Image.Ready
                                        maskThresholdMin: 0.5
                                        maskSpreadAtMin: 1
                                    }

                                    Item {
                                        id: clipboardCircularMask

                                        width: 48 - 4
                                        height: 48 - 4
                                        layer.enabled: true
                                        layer.smooth: true
                                        visible: false

                                        Rectangle {
                                            anchors.fill: parent
                                            radius: width / 2
                                            color: "black"
                                            antialiasing: true
                                        }

                                    }

                                    DankIcon {
                                        visible: !(entryType === "image" && thumbnailImageSource.status === Image.Ready)
                                        name: {
                                            if (entryType === "image")
                                                return "image";

                                            if (entryType === "long_text")
                                                return "subject";

                                            return "content_copy";
                                        }
                                        size: Theme.iconSize
                                        color: Theme.primary
                                        anchors.centerIn: parent
                                    }

                                }

                                Column {
                                    anchors.verticalCenter: parent.verticalCenter
                                    width: parent.width - (entryType === "image" ? 48 : Theme.iconSize) - Theme.spacingM
                                    spacing: Theme.spacingXS

                                    StyledText {
                                        text: {
                                            switch (entryType) {
                                            case "image":
                                                return "Image • " + entryPreview;
                                            case "long_text":
                                                return "Long Text";
                                            default:
                                                return "Text";
                                            }
                                        }
                                        font.pixelSize: Theme.fontSizeSmall
                                        color: Theme.primary
                                        font.weight: Font.Medium
                                        width: parent.width
                                        elide: Text.ElideRight
                                    }

                                    StyledText {
                                        id: contentText

                                        text: entryPreview
                                        font.pixelSize: Theme.fontSizeMedium
                                        color: Theme.surfaceText
                                        width: parent.width
                                        wrapMode: Text.WordWrap
                                        maximumLineCount: entryType === "long_text" ? 3 : 1
                                        elide: Text.ElideRight
                                    }

                                }

                            }

                        }

                        DankActionButton {
                            anchors.right: parent.right
                            anchors.rightMargin: Theme.spacingM
                            anchors.verticalCenter: parent.verticalCenter
                            iconName: "close"
                            iconSize: Theme.iconSize - 6
                            iconColor: Theme.error
                            hoverColor: Theme.errorHover
                            onClicked: {
                                
                                deleteEntry(model.entry);
                            }
                        }

                        MouseArea {
                            id: mouseArea

                            anchors.fill: parent
                            anchors.rightMargin: 40 // Enough space to avoid delete button (32 + 8 margin)
                            hoverEnabled: true
                            cursorShape: Qt.PointingHandCursor
                            onClicked: copyEntry(model.entry)
                        }

                        Behavior on color {
                            ColorAnimation {
                                duration: Theme.shortDuration
                            }

                        }

                    }

                }

            }

        }

    }

}