import sys

from PyQt5.QtSvg import QSvgRenderer
from PyQt5.QtWidgets import QApplication, QMainWindow, QStackedWidget, QHBoxLayout, QWidget, QMessageBox, QPushButton, \
    QLabel, QVBoxLayout, QFrame, QSizePolicy
from PyQt5.QtCore import Qt, QPoint, QSize, QByteArray
from views.login import LoginPage
from views.nav import NavBar
from views.home import Home
from views.word_to_pdf import WordToPDFPage
from views.pdf_tools_page import PDFToolsPage
from views.app_center import AppCenter
from views.history import HistoryPage
from PyQt5.QtGui import QPalette, QColor, QFont, QPixmap, QIcon, QPainter

from styles.styles import STYLES_TXT


class CustomTitleBar(QWidget):
    """现代化标题栏控件（直接设置SVG图标）"""

    def __init__(self, parent=None):
        super().__init__(parent)
        self.parent = parent
        self.setMouseTracking(True)
        self.drag_position = QPoint()
        self.setObjectName("customTitleBar")
        self.init_ui()
        self.set_style()
        self.setMinimumHeight(48)

    def init_ui(self):
        """初始化标题栏UI"""
        layout = QHBoxLayout(self)
        layout.setContentsMargins(15, 8, 15, 8)
        layout.setSpacing(8)

        # 应用图标和标题
        title_container = QWidget()
        title_layout = QHBoxLayout(title_container)
        title_layout.setContentsMargins(0, 0, 0, 0)
        title_layout.setSpacing(10)

        # 应用图标（使用纯CSS实现）
        icon_label = QLabel()
        icon_label.setObjectName("appIcon")
        icon_label.setFixedSize(24, 24)

        # 应用标题
        self.title_label = QLabel("奶酪云工具箱")
        self.title_label.setObjectName("titleLabel")
        self.title_label.setFont(QFont("Microsoft YaHei UI", 10, QFont.DemiBold))

        # 版本号
        version_label = QLabel("v2.1.0")
        version_label.setObjectName("versionLabel")
        version_label.setFont(QFont("Microsoft YaHei UI", 8))

        title_layout.addWidget(icon_label)
        title_layout.addWidget(self.title_label)
        title_layout.addWidget(version_label)

        # 拖拽区域
        self.drag_area = QWidget()
        self.drag_area.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Preferred)
        self.drag_area.setObjectName("dragArea")

        # 窗口控制按钮
        buttons_container = QWidget()
        buttons_layout = QHBoxLayout(buttons_container)
        buttons_layout.setContentsMargins(0, 0, 0, 0)
        buttons_layout.setSpacing(4)

        # 最小化按钮（直接设置SVG）
        self.minimize_btn = QPushButton()
        self.minimize_btn.setObjectName("minimizeBtn")
        self.minimize_btn.setFixedSize(34, 28)
        self.minimize_btn.setToolTip("最小化")
        self.minimize_btn.clicked.connect(lambda: self.parent.showMinimized())
        self.minimize_btn.setIcon(self.create_svg_icon("""
            <svg width="12" height="2" viewBox="0 0 12 2" xmlns="http://www.w3.org/2000/svg">
                <rect width="12" height="2"/>
            </svg>
        """, "#8A92A6"))

        # 最大化按钮（直接设置SVG）
        self.maximize_btn = QPushButton()
        self.maximize_btn.setObjectName("maximizeBtn")
        self.maximize_btn.setFixedSize(34, 28)
        self.maximize_btn.setToolTip("最大化")
        self.maximize_btn.clicked.connect(self.toggle_maximize)
        self.maximize_btn.setIcon(self.create_svg_icon("""
            <svg width="10" height="10" viewBox="0 0 10 10" xmlns="http://www.w3.org/2000/svg">
                <rect x="0.5" y="0.5" width="9" height="9" stroke-linejoin="round"/>
            </svg>
        """, "#8A92A6"))

        # 关闭按钮（直接设置SVG）
        self.close_btn = QPushButton()
        self.close_btn.setObjectName("closeBtn")
        self.close_btn.setFixedSize(34, 28)
        self.close_btn.setToolTip("关闭")
        self.close_btn.clicked.connect(self.parent.close)
        self.close_btn.setIcon(self.create_svg_icon("""
            <svg width="10" height="10" viewBox="0 0 10 10" xmlns="http://www.w3.org/2000/svg">
                <path d="M1 1L9 9M9 1L1 9" stroke-linecap="round"/>
            </svg>
        """, "#8A92A6"))

        buttons_layout.addWidget(self.minimize_btn)
        buttons_layout.addWidget(self.maximize_btn)
        buttons_layout.addWidget(self.close_btn)

        # 添加所有组件
        layout.addWidget(title_container)
        layout.addWidget(self.drag_area)
        layout.addWidget(buttons_container)

    def create_svg_icon(self, svg_data, color):
        """从SVG数据创建QIcon"""
        # 创建SVG字节数组
        svg_data = svg_data.replace('<svg', f'<svg stroke="{color}"')
        byte_array = QByteArray()
        byte_array.append(svg_data.encode('utf-8'))

        # 创建SVG渲染器
        svg_renderer = QSvgRenderer(byte_array)

        # 创建图标
        icon = QIcon()

        # 正常状态
        normal_pixmap = QPixmap(16, 16)
        normal_pixmap.fill(Qt.transparent)
        painter = QPainter(normal_pixmap)
        svg_renderer.render(painter)
        painter.end()
        icon.addPixmap(normal_pixmap, QIcon.Normal, QIcon.Off)

        # 悬停状态
        hover_pixmap = QPixmap(16, 16)
        hover_pixmap.fill(Qt.transparent)
        painter = QPainter(hover_pixmap)
        svg_renderer.render(painter)
        painter.end()
        icon.addPixmap(hover_pixmap, QIcon.Active, QIcon.Off)

        return icon

    def set_style(self):
        """设置标题栏样式"""
        self.setStyleSheet("""
            /* 标题栏整体样式 */
            QWidget#customTitleBar {
                background-color: #252836;
                border-top-left-radius: 12px;
                border-top-right-radius: 12px;
            }

            /* 应用图标 */
            QLabel#appIcon {
                min-width: 24px;
                min-height: 24px;
                background-color: #4f46e5;
                border-radius: 6px;
            }

            /* 应用标题样式 */
            QLabel#titleLabel {
                color: #FFFFFF;
                font-weight: 600;
                letter-spacing: 0.5px;
            }

            /* 版本标签样式 */
            QLabel#versionLabel {
                color: #8A92A6;
                font-size: 8pt;
                padding-top: 2px;
            }

            /* 按钮基础样式 */
            QPushButton {
                background-color: transparent;
                border: none;
                border-radius: 6px;
                font-size: 14pt;
            }

            /* 最小化按钮 */
            QPushButton#minimizeBtn:hover {
                background-color: rgba(255, 255, 255, 0.1);
            }
            QPushButton#minimizeBtn:pressed {
                background-color: rgba(255, 255, 255, 0.15);
            }

            /* 最大化按钮 */
            QPushButton#maximizeBtn:hover {
                background-color: rgba(255, 255, 255, 0.1);
            }
            QPushButton#maximizeBtn:pressed {
                background-color: rgba(255, 255, 255, 0.15);
            }

            /* 关闭按钮 */
            QPushButton#closeBtn:hover {
                background-color: #E85050;
            }
            QPushButton#closeBtn:pressed {
                background-color: #D84242;
            }
        """)

    def toggle_maximize(self):
        """切换窗口最大化/正常状态"""
        if self.parent.isMaximized():
            self.parent.showNormal()
            # 更新最大化按钮图标
            self.maximize_btn.setIcon(self.create_svg_icon("""
                <svg width="10" height="10" viewBox="0 0 10 10" xmlns="http://www.w3.org/2000/svg">
                    <rect x="0.5" y="0.5" width="9" height="9" stroke-linejoin="round"/>
                </svg>
            """, "#8A92A6"))
        else:
            self.parent.showMaximized()
            # 更新最大化按钮图标为还原状态
            self.maximize_btn.setIcon(self.create_svg_icon("""
                <svg width="10" height="10" viewBox="0 0 10 10" xmlns="http://www.w3.org/2000/svg">
                    <path d="M3.5 0.5V3.5H0.5" stroke-linecap="round" stroke-linejoin="round"/>
                    <path d="M6.5 9.5V6.5H9.5" stroke-linecap="round" stroke-linejoin="round"/>
                    <rect x="3.5" y="3.5" width="6" height="6" stroke-linejoin="round"/>
                </svg>
            """, "#8A92A6"))

    def mousePressEvent(self, event):
        """鼠标按下事件处理"""
        if event.button() == Qt.LeftButton:
            self.drag_position = event.globalPos() - self.parent.frameGeometry().topLeft()
            event.accept()

    def mouseMoveEvent(self, event):
        """鼠标移动事件处理"""
        if event.buttons() == Qt.LeftButton:
            self.parent.move(event.globalPos() - self.drag_position)
            event.accept()

    def mouseDoubleClickEvent(self, event):
        """鼠标双击事件处理"""
        if event.button() == Qt.LeftButton:
            self.toggle_maximize()
            event.accept()

class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.username = None
        self.setWindowFlag(Qt.FramelessWindowHint)  # 设置为无边框窗口
        self.init_ui()

    def init_ui(self):
        self.setWindowTitle("文档处理工具")
        self.setGeometry(100, 100, 1200, 800)

        # 添加自定义标题栏样式
        titlebar_styles = """
        /* 自定义标题栏样式 */
        #customTitleBar {
            background-color: #1a202c;
            border-bottom: 1px solid #2d3748;
            height: 50px;
        }

        #titleLabel {
            color: #cbd5e0;
            font-size: 16px;
            font-weight: bold;
        }

        #dragArea {
            background-color: transparent;
        }

        QPushButton#minimizeBtn,
        QPushButton#maximizeBtn,
        QPushButton#closeBtn {
            background-color: transparent;
            border: none;
            border-radius: 4px;
            font-size: 14px;
            color: #a0aec0;
            padding: 0;
        }

        QPushButton#minimizeBtn:hover,
        QPushButton#maximizeBtn:hover {
            background-color: rgba(74, 85, 104, 0.3);
            color: #e2e8f0;
        }

        QPushButton#closeBtn:hover {
            background-color: rgba(254, 178, 178, 0.3);
            color: #f56565;
        }

        /* 窗口边框效果 */
        #mainWidget {
            border: 1px solid #2d3748;
        }
        """
        # 合并样式表
        self.setStyleSheet(STYLES_TXT + titlebar_styles)

        # 设置暗色主题调色板
        palette = QPalette()
        palette.setColor(QPalette.Window, QColor(26, 32, 44))  # #1a202c
        palette.setColor(QPalette.WindowText, QColor(226, 232, 240))  # #e2e8f0
        palette.setColor(QPalette.Base, QColor(45, 55, 72))  # #2d3748
        palette.setColor(QPalette.AlternateBase, QColor(42, 50, 65))  # #2a3241
        palette.setColor(QPalette.ToolTipBase, QColor(26, 32, 44))  # #1a202c
        palette.setColor(QPalette.ToolTipText, QColor(226, 232, 240))  # #e2e8f0
        palette.setColor(QPalette.Text, QColor(226, 232, 240))  # #e2e8f0
        palette.setColor(QPalette.Button, QColor(79, 70, 229))  # #4f46e5
        palette.setColor(QPalette.ButtonText, QColor(226, 232, 240))  # #e2e8f0
        palette.setColor(QPalette.BrightText, Qt.white)
        palette.setColor(QPalette.Link, QColor(129, 140, 248))  # #818cf8
        palette.setColor(QPalette.Highlight, QColor(129, 140, 248))  # #818cf8
        palette.setColor(QPalette.HighlightedText, Qt.white)
        palette.setColor(QPalette.Disabled, QPalette.Text, QColor(160, 174, 192))  # #a0aec0
        self.setPalette(palette)

        # 主窗口部件
        self.main_widget = QWidget()
        self.main_widget.setObjectName("mainWidget")
        self.main_layout = QVBoxLayout(self.main_widget)
        self.main_layout.setContentsMargins(0, 0, 0, 0)
        self.main_layout.setSpacing(0)

        # 添加自定义标题栏
        self.title_bar = CustomTitleBar(self)
        self.main_layout.addWidget(self.title_bar)

        # 添加分隔线
        separator = QFrame()
        separator.setFrameShape(QFrame.HLine)
        separator.setFrameShadow(QFrame.Sunken)
        separator.setMaximumHeight(1)
        separator.setStyleSheet("background-color: #2d3748;")
        self.main_layout.addWidget(separator)

        # 主内容区域
        content_widget = QWidget()
        content_layout = QHBoxLayout(content_widget)
        content_layout.setContentsMargins(0, 0, 0, 0)
        content_layout.setSpacing(0)

        # 导航栏 (初始隐藏)
        self.nav_bar = NavBar("")
        self.nav_bar.setObjectName("navBar")
        self.nav_bar.hide()
        self.nav_bar.nav_item_clicked.connect(self.handle_nav_click)
        self.nav_bar.logout_clicked.connect(self.handle_logout)

        # 页面堆栈
        self.stacked_pages = QStackedWidget()
        self.stacked_pages.setObjectName("stackedPages")

        # 登录页
        self.login_page = LoginPage()
        self.login_page.login_success.connect(self.handle_login_success)

        # 首页
        self.home = Home()
        self.home.app_selected.connect(self.handle_app_selected)

        # 应用中心页
        self.app_center = AppCenter()
        self.app_center.app_selected.connect(self.handle_app_selected)

        # Word转PDF页
        self.word_to_pdf = WordToPDFPage()

        # Word转PDF页
        self.pdf_tools_page = PDFToolsPage()

        # 使用记录页
        self.history_page = HistoryPage()

        # 设置页（占位）
        self.settings_page = QWidget()
        self.settings_page.setObjectName("settingsPage")

        # 添加页面
        self.stacked_pages.addWidget(self.login_page)
        self.stacked_pages.addWidget(self.app_center)
        self.stacked_pages.addWidget(self.home)
        self.stacked_pages.addWidget(self.word_to_pdf)
        self.stacked_pages.addWidget(self.pdf_tools_page)
        self.stacked_pages.addWidget(self.history_page)
        self.stacked_pages.addWidget(self.settings_page)

        # 主内容布局
        content_layout.addWidget(self.nav_bar)
        content_layout.addWidget(self.stacked_pages, 1)

        # 添加到主布局
        self.main_layout.addWidget(content_widget, 1)

        self.setCentralWidget(self.main_widget)

        # 鼠标悬停在边缘时的调整光标
        self.setMouseTracking(True)

    def handle_login_success(self, username):
        self.username = username
        # 更新标题栏显示
        self.title_bar.title_label.setText(f"文档处理工具 - 欢迎 {username}")
        # 更新导航栏用户信息
        self.nav_bar.username = username
        self.nav_bar.show()
        # 设置默认激活页
        self.nav_bar.set_active_nav("home")
        self.stacked_pages.setCurrentWidget(self.home)

    def handle_logout(self):
        self.username = None
        self.nav_bar.hide()
        self.stacked_pages.setCurrentWidget(self.login_page)
        # 重置标题栏
        self.title_bar.title_label.setText("文档处理工具")

    def handle_nav_click(self, nav_id):
        # 确保导航栏状态更新
        self.nav_bar.set_active_nav(nav_id)

        # 根据导航ID切换页面
        if nav_id == "home":
            self.stacked_pages.setCurrentWidget(self.home)
        if nav_id == "app_center":
            self.stacked_pages.setCurrentWidget(self.app_center)
        elif nav_id == "history":
            self.stacked_pages.setCurrentWidget(self.history_page)
        elif nav_id == "settings":
            self.stacked_pages.setCurrentWidget(self.settings_page)

    def handle_app_selected(self, app_id):
        try:
            if app_id == "word_to_pdf":
                self.stacked_pages.setCurrentWidget(self.word_to_pdf)
            elif app_id == "pdf_tools_page":
                print('1')
                self.stacked_pages.setCurrentWidget(self.pdf_tools_page)
            elif app_id == "history":
                self.stacked_pages.setCurrentWidget(self.word_to_pdf)
            else:
                self.show_development_popup(app_id)
        except Exception as e:
            print(f"处理应用选择时发生错误: {e}")
            QMessageBox.critical(self, "错误", f"发生错误: {str(e)}", QMessageBox.Button.Ok)

    def show_development_popup(self, app_id):
        """显示开发中弹窗"""
        try:
            msg_box = QMessageBox(self)
            msg_box.setWindowTitle("功能开发中")
            msg_box.setText(f"应用 '{app_id}' 正在开发中")
            msg_box.setInformativeText("我们正在努力开发此功能，敬请期待！")
            msg_box.setIcon(QMessageBox.Icon.Information)
            msg_box.setStandardButtons(QMessageBox.Button.Ok)
            msg_box.button(QMessageBox.Button.Ok).setText("知道了")
            msg_box.exec()
        except Exception as e:
            print(f"显示弹窗时发生错误: {e}")


def main():
    app = QApplication(sys.argv)
    app.setStyle('Fusion')

    # 设置高DPI支持
    app.setAttribute(Qt.AA_EnableHighDpiScaling)
    app.setAttribute(Qt.AA_UseHighDpiPixmaps)

    window = MainWindow()
    window.show()
    sys.exit(app.exec_())


if __name__ == "__main__":
    main()