import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QStackedWidget, QHBoxLayout, QWidget, QMessageBox
from PyQt5.QtCore import Qt
from views.login import LoginPage
from views.nav import NavBar
from views.home import Home
from views.word_to_pdf import WordToPDFPage
from views.app_center import AppCenter
from views.history import HistoryPage
from PyQt5.QtGui import QPalette, QColor

# 优化的暗色主题样式表
STYLES_TXT = """
/* ===== 全局样式 ===== */
QWidget {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    color: #e2e8f0;
    border: none;
}

/* 输入框 */
QLineEdit {
    background-color: #2d3748;
    border: 1px solid #4a5568;
    border-radius: 6px;
    padding: 10px;
    color: #e2e8f0;
    min-height: 40px;
}

QLineEdit:focus {
    border-color: #818cf8;
    outline: none;
}

/* ===== 按钮全局样式 ===== */
QPushButton {
    background-color: #4f46e5;
    color: white;
    border-radius: 8px;  /* 增加圆角程度 */
    padding: 10px 16px;
    min-height: 40px;    /* 增加高度 */
    font-weight: 500;
    transition: all 0.2s ease;
    border: none;
    outline: none;       /* 防止点击时出现虚线边框 */
}

QPushButton:hover {
    background-color: #4338ca;
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

QPushButton:pressed {
    background-color: #3730a3;
    transform: translateY(0);
    box-shadow: none;
}

QPushButton:disabled {
    background-color: #4a5568;
    color: #a0aec0;
}

/* 特殊按钮样式 */
QPushButton#navBtn {
    text-align: left;
    padding: 12px 25px;
    color: #a0aec0;
    border-radius: 8px;
    margin: 5px 15px;
    font-size: 14px;
    background-color: transparent;
    border: none;
    min-height: auto;  /* 覆盖全局最小高度 */
}

QPushButton#navBtn:hover {
    background-color: rgba(79, 70, 229, 0.1);
    color: #cbd5e0;
}

QPushButton#navBtn.active {
    background-color: rgba(79, 70, 229, 0.15);
    color: #818cf8;
    font-weight: 500;
}

QPushButton#logoutBtn {
    text-align: left;
    padding: 12px 25px;
    border-radius: 8px;
    margin: 5px 15px;
    font-size: 14px;
    color: #feb2b2;
    background-color: transparent;
    border: none;
    min-height: auto;  /* 覆盖全局最小高度 */
}

QPushButton#logoutBtn:hover {
    color: #f56565;
}

/* 操作按钮样式 */
QPushButton#actionBtn {
    background-color: rgba(129, 140, 248, 0.1);
    color: #818cf8;
    border: 1px solid rgba(129, 140, 248, 0.2);
    min-height: auto;  /* 覆盖全局最小高度 */
}

QPushButton#actionBtn:hover {
    background-color: rgba(129, 140, 248, 0.2);
}

QPushButton#retryBtn {
    background-color: rgba(251, 113, 133, 0.1);
    color: #fb7185;
    border: 1px solid rgba(251, 113, 133, 0.2);
    min-height: auto;  /* 覆盖全局最小高度 */
}

QPushButton#retryBtn:hover {
    background-color: rgba(251, 113, 133, 0.2);
}

QPushButton#deleteBtn {
    background-color: rgba(120, 113, 108, 0.1);
    color: #a8a29e;
    border: 1px solid rgba(120, 113, 108, 0.2);
    min-height: auto;  /* 覆盖全局最小高度 */
}

QPushButton#deleteBtn:hover {
    background-color: rgba(120, 113, 108, 0.2);
}

/* 卡片按钮样式 */
QPushButton#appCardBtn {
    min-height: auto;  /* 覆盖全局最小高度 */
    min-width: 120px;
}

/* 登录页面按钮 */
QPushButton#loginBtn {
    min-height: auto;  /* 覆盖全局最小高度 */
    min-width: 240px;
    padding: 14px 30px;
    font-size: 16px;
}

/* 列表控件 */
QListWidget {
    background-color: #2d3748;
    border: 1px solid #4a5568;
    border-radius: 8px;
    padding: 4px;
    color: #e2e8f0;
    outline: none;
}

QListWidget::item {
    padding: 8px 12px;
    border-bottom: 1px solid #4a5568;
}

QListWidget::item:selected {
    background-color: rgba(129, 140, 248, 0.15);
    color: #e2e8f0;
    border-radius: 4px;
}

/* 滚动条 */
QScrollBar:vertical {
    background: #2d3748;
    width: 10px;
    border: none;
}

QScrollBar::handle:vertical {
    background: #4a5568;
    min-height: 20px;
    border-radius: 4px;
}

QScrollBar::handle:vertical:hover {
    background: #718096;
}

QScrollBar::add-line:vertical, 
QScrollBar::sub-line:vertical {
    height: 0;
}

QScrollBar::add-page:vertical, 
QScrollBar::sub-page:vertical {
    background: none;
}

/* 标签 */
QLabel {
    color: #e2e8f0;
    background-color: transparent;
}

/* 菜单栏 */
/* 导航栏 */
#navBar {
    background-color: #1a202c;
    border-right: 1px solid #2d3748;
}

/* 用户卡片 */
#userCard {
    background-color: #2d3748;
    border-radius: 8px;
    margin: 15px;
    padding: 15px;
}

/* 导航按钮 */
#navBtn {
    text-align: left;
    padding: 12px 25px;
    color: #a0aec0;
    border-radius: 8px;
    margin: 5px 15px;
    font-size: 14px;
    background-color: transparent;
    border: none;
}

#navBtn:hover {
    background-color: rgba(79, 70, 229, 0.1);
    color: #cbd5e0;
}

#navBtn.active {
    background-color: rgba(79, 70, 229, 0.15);
    color: #818cf8;
    font-weight: 500;
}

/* 退出按钮 */
#logoutBtn {
    text-align: left;
    padding: 12px 25px;
    border-radius: 8px;
    margin: 5px 15px;
    font-size: 14px;
    color: #feb2b2;
    background-color: transparent;
    border: none;
}

#logoutBtn:hover {
    color: #f56565;
}

/* 分割线 */
QFrame[frameShape="4"] { /* HLine */
    background-color: #2d3748;
    margin: 10px 15px;
    max-height: 1px;
}

/* 进度条 */
QProgressBar {
    border-radius: 4px;
    height: 8px;
    background-color: #2d3748;
    border: 1px solid #4a5568;
    text-align: center;
}

QProgressBar::chunk {
    background-color: #4f46e5;
    border-radius: 4px;
}

/* 复选框 */
QCheckBox {
    color: #e2e8f0;
    spacing: 8px;
}

QCheckBox::indicator {
    width: 16px;
    height: 16px;
    border: 1px solid #4a5568;
    border-radius: 3px;
    background-color: #2d3748;
}

QCheckBox::indicator:checked {
    background-color: #4f46e5;
    border: 1px solid #4f46e5;
}

/* 分组框 */
QGroupBox {
    font-weight: bold;
    background-color: #2d3748;
    border: 1px solid #4a5568;
    border-radius: 8px;
    margin-top: 1.5ex;
    padding-top: 10px;
}

QGroupBox::title {
    subcontrol-origin: margin;
    subcontrol-position: top left;
    background-color: transparent;
    padding: 0 3px;
    left: 9px;
}
"""


class MainWindow(QMainWindow):
    def __init__(self):
        super().__init__()
        self.username = None
        self.init_ui()

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

        # 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_layout = QHBoxLayout(self.main_widget)
        self.main_layout.setContentsMargins(0, 0, 0, 0)
        self.main_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()

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

        # 设置页（待实现）
        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.history_page)
        self.stacked_pages.addWidget(self.settings_page)

        # 主布局
        self.main_layout.addWidget(self.nav_bar)
        self.main_layout.addWidget(self.stacked_pages, 1)  # 设置弹性因子为1

        self.setCentralWidget(self.main_widget)

    def handle_login_success(self, username):
        self.username = 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)

    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 == "history":
                # 注意：这里假设历史记录页面尚未开发，暂时显示word_to_pdf页面
                # 实际开发中应替换为正确的历史记录页面
                self.stacked_pages.setCurrentWidget(self.word_to_pdf)
            else:
                # 未开发的应用：弹出提示弹窗
                self.show_development_popup(app_id)
        except Exception as e:
            # 捕获并打印异常信息，避免程序闪退
            print(f"处理应用选择时发生错误: {e}")
            # 可以选择显示错误弹窗
            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()