import sys
from PyQt5.QtWidgets import QApplication, QMainWindow, QStackedWidget, QHBoxLayout, QWidget
from PyQt5.QtCore import Qt
from views.login import LoginPage
from views.nav import NavBar
from views.app_center import AppCenter
from views.word_to_pdf import WordToPDFPage
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;
}

/* 按钮通用样式 */
QPushButton {
    background-color: #4f46e5;
    color: white;
    border-radius: 6px;
    padding: 8px 16px;
    border: none;
    min-height: 35px;
    font-weight: 500;
    transition: all 0.2s ease;
}

QPushButton:hover {
    background-color: #4338ca;
    transform: translateY(-1px);
}

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

/* 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 */
QMenuBar {
    background-color: #1a202c;
    color: #e2e8f0;
    border-bottom: 1px solid #2d3748;
}

QMenuBar::item {
    background-color: transparent;
    padding: 4px 10px;
}

QMenuBar::item:selected {
    background-color: #4f46e5;
    color: white;
}

QMenu {
    background-color: #2d3748;
    border: 1px solid #4a5568;
    color: #e2e8f0;
    padding: 4px;
}

QMenu::item {
    padding: 6px 30px 6px 20px;
}

QMenu::item:selected {
    background-color: #4f46e5;
    color: white;
}

QMenu::separator {
    height: 1px;
    background: #4a5568;
    margin: 4px 8px;
}

/* 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)

        # 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.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.app_center)

    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.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):
        if app_id == "word_to_pdf":
            self.stacked_pages.setCurrentWidget(self.word_to_pdf)
        # 后续可添加其他应用


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()