// SPDX-FileCopyrightText: 2018-2019 Black Hat <bhat@encom.eu.org>
// SPDX-License-Identifier: GPL-3.0-only

import QtQuick
import QtQuick.Controls as QQC2
import QtQuick.Layouts
import Qt.labs.platform

import org.kde.kirigami as Kirigami

import org.kde.neochat
import org.kde.neochat.config

/**
 * @brief A timeline delegate for an file message.
 *
 * @inherit MessageDelegate
 */
MessageDelegate {
    id: root

    /**
     * @brief The media info for the event.
     *
     * This should consist of the following:
     *  - source - The mxc URL for the media.
     *  - mimeType - The MIME type of the media.
     *  - mimeIcon - The MIME icon name.
     *  - size - The file size in bytes.
     */
    required property var mediaInfo

    /**
     * @brief Whether the media has been downloaded.
     */
    readonly property bool downloaded: root.progressInfo && root.progressInfo.completed

    /**
     * @brief Whether the file should be automatically opened when downloaded.
     */
    property bool autoOpenFile: false

    onDownloadedChanged: if (autoOpenFile) {
        openSavedFile();
    }

    onOpenContextMenu: RoomManager.viewEventMenu(eventId, author, delegateType, plainText, "", "", mediaInfo.mimeType, progressInfo)

    function saveFileAs() {
        const dialog = fileDialog.createObject(QQC2.ApplicationWindow.overlay)
        dialog.open()
        dialog.currentFile = dialog.folder + "/" + currentRoom.fileNameToDownload(root.eventId)
    }

    function openSavedFile() {
        UrlHelper.openUrl(root.progressInfo.localPath);
    }

    bubbleContent: RowLayout {
        spacing: Kirigami.Units.largeSpacing

        states: [
            State {
                name: "downloadedInstant"
                when: root.progressInfo.completed && autoOpenFile

                PropertyChanges {
                    target: openButton
                    icon.name: "document-open"
                    onClicked: openSavedFile()
                }

                PropertyChanges {
                    target: downloadButton
                    icon.name: "download"
                    QQC2.ToolTip.text: i18nc("tooltip for a button on a message; offers ability to download its file", "Download")
                    onClicked: saveFileAs()
                }
            },
            State {
                name: "downloaded"
                when: root.progressInfo.completed && !autoOpenFile

                PropertyChanges {
                    target: openButton
                    visible: false
                }

                PropertyChanges {
                    target: downloadButton
                    icon.name: "document-open"
                    QQC2.ToolTip.text: i18nc("tooltip for a button on a message; offers ability to open its downloaded file with an appropriate application", "Open File")
                    onClicked: openSavedFile()
                }
            },
            State {
                name: "downloading"
                when: root.progressInfo.active

                PropertyChanges {
                    target: openButton
                    visible: false
                }

                PropertyChanges {
                    target: sizeLabel
                    text: i18nc("file download progress", "%1 / %2", Controller.formatByteSize(root.progressInfo.progress), Controller.formatByteSize(root.progressInfo.total))
                }
                PropertyChanges {
                    target: downloadButton
                    icon.name: "media-playback-stop"
                    QQC2.ToolTip.text: i18nc("tooltip for a button on a message; stops downloading the message's file", "Stop Download")
                    onClicked: currentRoom.cancelFileTransfer(root.eventId)
                }
            },
            State {
                name: "raw"
                when: true

                PropertyChanges {
                    target: downloadButton
                    onClicked: root.saveFileAs()
                }
            }
        ]

        Kirigami.Icon {
            source: root.mediaInfo.mimeIcon
            fallback: "unknown"
        }

        ColumnLayout {
            spacing: 0
            QQC2.Label {
                Layout.fillWidth: true
                text: root.display
                wrapMode: Text.Wrap
                elide: Text.ElideRight
            }
            QQC2.Label {
                id: sizeLabel
                Layout.fillWidth: true
                text: Controller.formatByteSize(root.mediaInfo.size)
                opacity: 0.7
                elide: Text.ElideRight
                maximumLineCount: 1
            }
        }

        QQC2.Button {
            id: openButton
            icon.name: "document-open"
            onClicked: {
                autoOpenFile = true;
                currentRoom.downloadTempFile(root.eventId);
            }

            QQC2.ToolTip.text: i18nc("tooltip for a button on a message; offers ability to open its downloaded file with an appropriate application", "Open File")
            QQC2.ToolTip.visible: hovered
            QQC2.ToolTip.delay: Kirigami.Units.toolTipDelay
        }

        QQC2.Button {
            id: downloadButton
            icon.name: "download"

            QQC2.ToolTip.text: i18nc("tooltip for a button on a message; offers ability to download its file", "Download")
            QQC2.ToolTip.visible: hovered
            QQC2.ToolTip.delay: Kirigami.Units.toolTipDelay
        }

        Component {
            id: fileDialog

            FileDialog {
                fileMode: FileDialog.SaveFile
                folder: Config.lastSaveDirectory.length > 0 ? Config.lastSaveDirectory : StandardPaths.writableLocation(StandardPaths.DownloadLocation)
                onAccepted: {
                    Config.lastSaveDirectory = folder
                    Config.save()
                    if (autoOpenFile) {
                        UrlHelper.copyTo(root.progressInfo.localPath, file)
                    } else {
                        currentRoom.download(root.eventId, file);
                    }
                }
            }
        }
    }
}