/*
 * Copyright (C) 2023, KylinSoft Co., Ltd.
 *
 * 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 <https://www.gnu.org/licenses/>.
 *
 */

import QtQuick 2.12
import QtQuick.Layouts 1.12
import QtQuick.Controls 2.5
import AppControls2 1.0 as AppControls2
import org.ukui.menu.core 1.0
import org.ukui.menu.utils 1.0

Item {
    id: appPageHeaderRoot
    property string title: ""
    property Item focusToPageContent
    property Component content: null
    clip: true

    function changeToSearch(keyEvent) {
        if (appPageHeaderRoot.content === null) {
            loader.item.changeToSearchState(keyEvent);
        }
    }

    Loader {
        id: loader
        anchors.fill: parent
        property string title: appPageHeaderRoot.title
        sourceComponent: {
            return appPageHeaderRoot.content === null ? defaultComponent : appPageHeaderRoot.content
        }
    }

    Component {
        id: defaultComponent
        Item {
            id: root

            function changeToSearchState(keyEvent) {
                state = "search";
                searchInputBar.text = keyEvent;
            }

            state: "normal"
            states: [
                State {
                    name: "normal"
                    PropertyChanges { target: searchBar; scale: 0.9; y: -pluginSelectionBar.height }
                    PropertyChanges { target: pluginSelectionBar; scale: 1.0; y: 0 }
                    StateChangeScript { script: pluginSelectMenu.model.reactivateProvider() }
                },
                State {
                    name: "search"
                    PropertyChanges { target: searchBar; scale: 1.0; y: 0 }
                    PropertyChanges { target: pluginSelectionBar; scale: 0.9; y: pluginSelectionBar.height }
                }
            ]

            transitions:[
                Transition {
                    to: "normal"
                    SequentialAnimation {
                        ScriptAction {
                            script: {
                                pluginSelectionBar.visible = true;
                                pluginSelectMenu.visible = true;
                            }
                        }
                        NumberAnimation { easing.type: Easing.InOutQuad; properties: "scale,y"; duration: 300 }
                        ScriptAction { script: searchBar.visible = false }
                    }
                },
                Transition {
                    to: "search"
                    SequentialAnimation {
                        ScriptAction {
                            script: {
                                searchBar.visible = true;
                                searchInputBar.providerId = "search";
                                searchInputBar.textInputFocus();
                            }
                        }
                        NumberAnimation { easing.type: Easing.InOutQuad; properties: "scale,y"; duration: 300}
                        ScriptAction {
                            script: {
                                pluginSelectionBar.visible = false;
                                pluginSelectMenu.visible = false;
                            }
                        }
                    }
                }
            ]

            Item {
                id: searchBar
                width: parent.width; height: 30
                Component.onCompleted: {
                    visible = false;
                    mainWindow.visibleChanged.connect(searchBarHide);
                }
                Component.onDestruction: mainWindow.visibleChanged.disconnect(searchBarHide);

                function searchBarHide() {
                    if (!mainWindow.visible) {
                        root.state = "normal"
                    }
                }

                RowLayout {
                    anchors.fill: parent
                    anchors.leftMargin: 15
                    anchors.rightMargin: 15
                    spacing: 10

                    SearchInputBar {
                        id: searchInputBar
                        property string providerId: ""

                        Layout.fillWidth: true
                        Layout.fillHeight: true
                        radius: 16
                        changeFocusTarget: focusToPageContent
                        onTextChanged: {
                            if (text === "") {
                                pluginSelectMenu.model.reactivateProvider();
                            } else {
                                appPageHeaderUtils.activateProvider(providerId);
                                appPageHeaderUtils.startSearch(text);
                            }
                        }
                    }

                    AppControls2.RoundButton {
                        Layout.preferredWidth: parent.height; Layout.preferredHeight: parent.height
                        buttonIcon: "image://appicon/edit-clear-symbolic"
                        activeFocusOnTab: true

                        onClicked: {
                            normalUI.focusToFalse();
                            searchInputBar.clear();
                            root.state = "normal";
                        }
                        Keys.onPressed: {
                            if (event.key === Qt.Key_Enter || event.key === Qt.Key_Return) {
                                searchInputBar.clear();
                                root.state = "normal";
                            }
                        }
                    }
                }
            }

            Item {
                id: pluginSelectionBar
                width: parent.width
                height: parent.height
                RowLayout {
                    anchors.fill: parent
                    anchors.leftMargin: 16
                    spacing: 12
                    AppControls2.StyleText {
                        Layout.fillWidth: true
                        Layout.fillHeight: true
                        verticalAlignment: Qt.AlignVCenter
                        text: appPageHeaderRoot.title
                        font.bold: true
                    }

                    ListView {
                        id: searchListView
                        Layout.preferredWidth: childrenRect.width
                        Layout.preferredHeight: 32
                        Layout.minimumWidth: 32
                        Layout.maximumWidth: 68
                        Layout.alignment: Qt.AlignVCenter

                        clip: true
                        spacing: 4
                        orientation: ListView.Horizontal
                        interactive: false
                        activeFocusOnTab: true

                        model: appPageHeaderUtils.model(PluginGroup.Button)
                        delegate: AppControls2.RoundButton {
                            width: height
                            height: ListView.view ? ListView.view.height : 0
                            buttonIcon: model.icon
                            ToolTip.text: qsTr("Search App")
                            ToolTip.delay: 500
                            ToolTip.visible: containsMouse
                            onClicked: {
                                root.state = "search";
                                // 后续添加需求，可以用model数据设置
                                // searchInputBar.providerId = model.id;
                            }
                            Keys.onPressed: {
                                if (event.key === Qt.Key_Enter || event.key === Qt.Key_Return) {
                                    root.state = "search";
                                }
                            }
                        }
                    }

                    PluginSelectMenu {
                        id: pluginSelectMenu
                        Layout.preferredWidth: childrenRect.width
                        Layout.preferredHeight: 32
                        Layout.maximumHeight: 32
                        Layout.minimumWidth: 32
                        Layout.rightMargin: 8
                        Layout.alignment: Qt.AlignVCenter
                    }
                }
            }

            function updateTitle(id) {
                appPageHeaderRoot.title = appPageHeaderUtils.getPluginTitle(id);
            }

            Component.onCompleted: {
                updateTitle("");
                appPageHeaderUtils.pluginChanged.connect(updateTitle);
            }

            Component.onDestruction: {
                appPageHeaderUtils.pluginChanged.disconnect(updateTitle);
            }
        }
    }
}