import QtQuick
import QtQuick.Controls
import QtQuick.Dialogs
import QtQuick.Layouts
import QtCore
import ColorPalette

Item {
    id: control

    // 属性接口
    property var value
    property string fileFilter: "所有文件 (*.*)"  // 文件过滤器
    property bool selectMultiple: false  // 是否多选

    implicitHeight: fileBox.implicitHeight
    signal asValueChanged(text: var)

    function setValue(newValue: var) {
        if (newValue !== value) {
            value = newValue
            fileBox.value = value
            asValueChanged(value)
        }
    }

    LineTextBox {
        id: fileBox
        value: control.value
        anchors.left: parent.left
        anchors.right: button.left
        anchors.verticalCenter: parent.verticalCenter

        onValueChanged: {
            control.setValue(value)
        }
    }

    Button {
        id: button
        anchors.right: parent.right
        anchors.verticalCenter: parent.verticalCenter
        width: 30
        height: 25
        text: "..."
        palette.buttonText: ColorPalette.theme.textPrimary
        background: Rectangle {
            color: ColorPalette.theme.buttonBackground
        }

        onClicked: {
            fileDialog.open()
        }
    }

    FileDialog {
        id: fileDialog
        title: control.selectMultiple ? "选择多个文件" : "选择文件"
        fileMode: control.selectMultiple ? FileDialog.OpenFiles : FileDialog.OpenFile

        // 设置文件过滤器
        nameFilters: {
            if (control.fileFilter) {
                return control.fileFilter.split(";;")
            }
            return ["所有文件 (*.*)"]
        }

        onAccepted: {
            if (control.selectMultiple) {
                // 多选模式
                var filePaths = []

                for (var i = 0; i < selectedFiles.length; i++) {
                    var filePath = selectedFiles[i].toString()
                    filePath = removeFileProtocol(filePath)
                    filePaths.push(filePath)
                }

                // 多个文件用分号分隔
                control.setValue(filePaths.join(";"))
            } else {
                // 单选模式
                var filePath = selectedFile.toString()
                filePath = removeFileProtocol(filePath)
                control.setValue(filePath)
            }
        }
    }

    // 辅助函数：移除文件协议前缀
    function removeFileProtocol(path) {
        if (path.startsWith("file:///")) {
            return path.substring(8)
        } else if (path.startsWith("file://")) {
            return path.substring(7)
        }
        return path
    }
}