from PyQt5.QtWidgets import (QWidget, QVBoxLayout, QHBoxLayout, QLabel,
                             QPushButton, QTableWidget, QTableWidgetItem,
                             QHeaderView, QAbstractItemView, QFrame,
                             QComboBox, QDateEdit, QLineEdit, QSpacerItem)
from PyQt5.QtCore import Qt, QDate
from PyQt5.QtGui import QBrush, QColor, QIcon, QFont


class HistoryPage(QWidget):
    def __init__(self):
        super().__init__()
        self.setObjectName("historyPage")
        self.init_ui()

    def init_ui(self):
        main_layout = QVBoxLayout()
        main_layout.setContentsMargins(25, 20, 25, 20)
        main_layout.setSpacing(15)

        # 标题区域
        title_layout = QHBoxLayout()

        title = QLabel("使用记录")
        title.setObjectName("pageTitle")
        title.setFont(QFont("Segoe UI", 18, QFont.Bold))
        title_layout.addWidget(title)

        title_layout.addStretch()

        # 导出按钮
        export_btn = QPushButton("导出记录")
        export_btn.setObjectName("exportBtn")
        export_btn.setIcon(QIcon(":/icons/download.png"))
        export_btn.setCursor(Qt.PointingHandCursor)
        title_layout.addWidget(export_btn)

        # 刷新按钮
        refresh_btn = QPushButton("刷新")
        refresh_btn.setObjectName("refreshBtn")
        refresh_btn.setIcon(QIcon(":/icons/refresh.png"))
        refresh_btn.setCursor(Qt.PointingHandCursor)
        title_layout.addWidget(refresh_btn)

        main_layout.addLayout(title_layout)

        # 筛选控件
        filter_layout = QHBoxLayout()
        filter_layout.setContentsMargins(0, 0, 0, 0)
        filter_layout.setSpacing(10)

        # 类型选择器
        type_combo = QComboBox()
        type_combo.addItems(["全部操作", "转换", "下载", "上传", "删除"])
        type_combo.setFixedWidth(120)
        type_combo.setObjectName("filterCombo")

        # 日期范围选择
        date_layout = QHBoxLayout()
        date_layout.setSpacing(5)

        start_date = QDateEdit()
        start_date.setDate(QDate.currentDate().addMonths(-1))
        start_date.setCalendarPopup(True)
        start_date.setDisplayFormat("yyyy-MM-dd")
        start_date.setFixedWidth(110)
        start_date.setObjectName("dateInput")

        to_label = QLabel("至")

        end_date = QDateEdit()
        end_date.setDate(QDate.currentDate())
        end_date.setCalendarPopup(True)
        end_date.setDisplayFormat("yyyy-MM-dd")
        end_date.setFixedWidth(110)
        end_date.setObjectName("dateInput")

        date_layout.addWidget(start_date)
        date_layout.addWidget(to_label)
        date_layout.addWidget(end_date)

        # 搜索框
        search_layout = QHBoxLayout()
        search_layout.setSpacing(5)
        search_layout.setContentsMargins(0, 0, 0, 0)

        search_input = QLineEdit()
        search_input.setPlaceholderText("搜索文件名、操作类型...")
        search_input.setFixedWidth(250)
        search_input.setObjectName("searchInput")

        search_btn = QPushButton()
        search_btn.setIcon(QIcon(":/icons/search.png"))
        search_btn.setObjectName("searchBtn")
        search_btn.setFixedSize(40, 40)
        search_btn.setCursor(Qt.PointingHandCursor)

        search_layout.addWidget(search_input)
        search_layout.addWidget(search_btn)

        # 添加到主筛选布局
        filter_layout.addWidget(type_combo)
        filter_layout.addSpacing(15)
        filter_layout.addWidget(QLabel("时间段:"))
        filter_layout.addLayout(date_layout)
        filter_layout.addSpacing(15)
        filter_layout.addWidget(QLabel("搜索:"))
        filter_layout.addLayout(search_layout)
        filter_layout.addStretch()

        main_layout.addLayout(filter_layout)

        # 结果计数
        count_layout = QHBoxLayout()
        count_layout.setContentsMargins(0, 0, 0, 0)

        result_count = QLabel("共找到 125 条记录")
        result_count.setObjectName("resultCount")
        result_count.setStyleSheet("color: #a0aec0; font-size: 13px;")
        count_layout.addWidget(result_count)
        count_layout.addStretch()

        main_layout.addLayout(count_layout)

        # 表格区域
        self.table = QTableWidget(0, 5)  # 0行，5列
        self.table.setObjectName("historyTable")
        self.table.setHorizontalHeaderLabels(["日期时间", "操作类型", "文件名称", "状态", ""])
        self.table.setColumnWidth(0, 160)
        self.table.setColumnWidth(1, 100)
        self.table.setColumnWidth(2, 280)
        self.table.setColumnWidth(3, 80)
        self.table.setColumnWidth(4, 100)
        self.table.horizontalHeader().setSectionResizeMode(2, QHeaderView.Stretch)
        self.table.verticalHeader().setVisible(False)
        self.table.setEditTriggers(QAbstractItemView.NoEditTriggers)
        self.table.setSelectionBehavior(QAbstractItemView.SelectRows)
        self.table.setAlternatingRowColors(True)

        # 表头样式
        header = self.table.horizontalHeader()
        header.setStyleSheet("""
            QHeaderView::section {
                background-color: #2d3748;
                padding: 12px 15px;
                border: none;
                color: #a0aec0;
                font-weight: 600;
                font-size: 13px;
            }
        """)

        # 填充示例数据
        self.populate_table()

        main_layout.addWidget(self.table, 1)  # 弹性因子1

        # 分页控件
        pagination_layout = QHBoxLayout()
        pagination_layout.setContentsMargins(0, 10, 0, 0)

        # 每页显示选择
        per_page_layout = QHBoxLayout()
        per_page_layout.setSpacing(5)
        per_page_layout.addWidget(QLabel("每页显示:"))

        per_page_combo = QComboBox()
        per_page_combo.addItems(["10", "25", "50", "100"])
        per_page_combo.setCurrentText("25")
        per_page_combo.setFixedWidth(80)
        per_page_combo.setObjectName("pageCombo")
        per_page_layout.addWidget(per_page_combo)

        pagination_layout.addLayout(per_page_layout)
        pagination_layout.addStretch()

        # 分页导航
        prev_btn = QPushButton("上一页")
        prev_btn.setObjectName("paginationBtn")
        prev_btn.setCursor(Qt.PointingHandCursor)
        prev_btn.setFixedWidth(80)
        prev_btn.setEnabled(False)

        page_label = QLabel("第 1 / 5 页")
        page_label.setObjectName("pageLabel")
        page_label.setFixedWidth(100)
        page_label.setAlignment(Qt.AlignCenter)

        next_btn = QPushButton("下一页")
        next_btn.setObjectName("paginationBtn")
        next_btn.setCursor(Qt.PointingHandCursor)
        next_btn.setFixedWidth(80)

        pagination_layout.addWidget(prev_btn)
        pagination_layout.addWidget(page_label)
        pagination_layout.addWidget(next_btn)

        main_layout.addLayout(pagination_layout)

        self.setLayout(main_layout)

    def populate_table(self):
        # 示例数据
        records = [
            {"time": "2023-06-15 14:30:22", "type": "转换", "file": "季度报告.docx", "status": "成功"},
            {"time": "2023-06-14 10:15:45", "type": "下载", "file": "项目文档.pdf", "status": "成功"},
            {"time": "2023-06-13 16:45:10", "type": "转换", "file": "个人简历.docx", "status": "失败",
             "error": "文件格式不支持"},
            {"time": "2023-06-12 09:20:33", "type": "上传", "file": "产品设计图.png", "status": "成功"},
            {"time": "2023-06-11 17:30:18", "type": "删除", "file": "旧项目备份.zip", "status": "成功"},
            {"time": "2023-06-10 08:45:27", "type": "转换", "file": "年度计划.docx", "status": "成功"},
            {"time": "2023-06-09 11:12:03", "type": "下载", "file": "合同范本.pdf", "status": "成功"},
            {"time": "2023-06-08 14:22:55", "type": "转换", "file": "用户手册.docx", "status": "失败",
             "error": "文件已损坏"},
            {"time": "2023-06-07 16:30:41", "type": "上传", "file": "会议记录.txt", "status": "成功"},
            {"time": "2023-06-06 10:45:19", "type": "转换", "file": "财务数据.xlsx", "status": "失败",
             "error": "不支持Excel转换"},
        ]

        self.table.setRowCount(len(records))

        for row, record in enumerate(records):
            # 时间
            time_item = QTableWidgetItem(record["time"])
            time_item.setFont(QFont("Segoe UI", 10))
            self.table.setItem(row, 0, time_item)

            # 类型
            type_item = QTableWidgetItem(record["type"])
            type_item.setFont(QFont("Segoe UI", 10, QFont.Medium))
            type_item.setTextAlignment(Qt.AlignCenter)

            # 设置类型颜色
            type_colors = {
                "转换": "#818cf8",  # 紫色
                "下载": "#34d399",  # 绿色
                "上传": "#60a5fa",  # 蓝色
                "删除": "#f87171",  # 红色
            }
            color = type_colors.get(record["type"], "#a0aec0")
            type_item.setForeground(QBrush(QColor(color)))
            self.table.setItem(row, 1, type_item)

            # 文件名
            file_item = QTableWidgetItem(record["file"])
            file_item.setFont(QFont("Segoe UI", 10))
            self.table.setItem(row, 2, file_item)

            # 状态
            status_item = QTableWidgetItem(record["status"])
            status_item.setFont(QFont("Segoe UI", 10, QFont.Medium))
            status_item.setTextAlignment(Qt.AlignCenter)

            # 设置状态颜色
            if record["status"] == "成功":
                status_color = QColor("#10b981")  # 绿色
            else:
                status_color = QColor("#ef4444")  # 红色

            status_item.setForeground(QBrush(status_color))
            self.table.setItem(row, 3, status_item)

            # 操作按钮
            btn_layout = QHBoxLayout()
            btn_layout.setContentsMargins(0, 0, 0, 0)
            btn_layout.setSpacing(5)

            # 查看按钮
            view_btn = QPushButton("详情")
            view_btn.setObjectName("actionBtn")
            view_btn.setFixedSize(60, 28)
            view_btn.setProperty("row", row)

            # 如果是失败状态，添加重试按钮
            if record.get("error"):
                retry_btn = QPushButton("重试")
                retry_btn.setObjectName("retryBtn")
                retry_btn.setFixedSize(60, 28)
                retry_btn.setProperty("row", row)
                btn_layout.addWidget(retry_btn)

            # 删除按钮
            delete_btn = QPushButton("删除")
            delete_btn.setObjectName("deleteBtn")
            delete_btn.setFixedSize(60, 28)
            delete_btn.setProperty("row", row)

            btn_layout.addWidget(view_btn)
            btn_layout.addWidget(delete_btn)

            # 添加到表格单元格
            widget = QWidget()
            widget.setLayout(btn_layout)
            self.table.setCellWidget(row, 4, widget)

        # 设置行高
        for row in range(len(records)):
            self.table.setRowHeight(row, 45)

        # 设置表格为空时的提示
        if len(records) == 0:
            self.table.setRowCount(1)
            self.table.setSpan(0, 0, 1, self.table.columnCount())

            empty_label = QLabel("没有找到记录")
            empty_label.setAlignment(Qt.AlignCenter)
            empty_label.setStyleSheet("color: #a0aec0; font-size: 16px;")
            self.table.setCellWidget(0, 0, empty_label)
            self.table.setRowHeight(0, 200)

        # 统一设置按钮样式
        self.set_styles()

    def set_styles(self):
        self.setStyleSheet("""
            /* ---------- 页面容器 ---------- */
            QWidget#historyPage {
                background-color: #1a202c;
            }

            /* ---------- 按钮通用样式 ---------- */
            QPushButton {
                border-radius: 4px;
                padding: 8px 12px;
                font-weight: 500;
                transition: all 0.2s;
                border: none;
            }

            /* 刷新和导出按钮 */
            QPushButton#refreshBtn,
            QPushButton#exportBtn {
                background-color: #4f46e5;
                color: white;
                min-height: 40px;
                padding: 10px 16px;
                min-width: 120px;
            }

            QPushButton#refreshBtn:hover,
            QPushButton#exportBtn:hover {
                background-color: #4338ca;
            }

            /* 筛选控件 */
            QComboBox#filterCombo,
            QComboBox#pageCombo {
                background-color: #2d3748;
                border: 1px solid #4a5568;
                border-radius: 4px;
                padding: 8px 12px;
                color: #e2e8f0;
                min-height: 35px;
            }

            QComboBox#filterCombo::drop-down,
            QComboBox#pageCombo::drop-down {
                width: 20px;
                border: none;
            }

            QComboBox#filterCombo QAbstractItemView,
            QComboBox#pageCombo QAbstractItemView {
                background-color: #2d3748;
                border: 1px solid #4a5568;
                color: #e2e8f0;
                selection-background-color: #4f46e5;
            }

            /* 日期输入 */
            QDateEdit#dateInput {
                background-color: #2d3748;
                border: 1px solid #4a5568;
                border-radius: 4px;
                padding: 8px 12px;
                color: #e2e8f0;
                min-height: 35px;
            }

            QDateEdit#dateInput::drop-down {
                width: 20px;
                border: none;
            }

            /* 搜索框 */
            QLineEdit#searchInput {
                background-color: #2d3748;
                border: 1px solid #4a5568;
                border-radius: 4px;
                padding: 8px 12px;
                color: #e2e8f0;
                min-height: 35px;
            }

            QPushButton#searchBtn {
                background-color: #4f46e5;
                border-radius: 4px;
            }

            QPushButton#searchBtn:hover {
                background-color: #4338ca;
            }

            /* 分页按钮 */
            QPushButton#paginationBtn {
                background-color: #2d3748;
                border: 1px solid #4a5568;
                color: #e2e8f0;
                padding: 8px;
                min-height: 35px;
            }

            QPushButton#paginationBtn:hover {
                background-color: rgba(79, 70, 229, 0.15);
                border-color: #818cf8;
            }

            /* ---------- 表格样式 ---------- */
            QTableView#historyTable {
                background-color: #1a202c;
                border: none;
                border-radius: 8px;
                gridline-color: #2d3748;
                selection-background-color: rgba(79, 70, 229, 0.15);
                selection-color: white;
                alternate-background-color: #19202c;
            }

            QTableView#historyTable QTableCornerButton::section {
                background-color: #2d3748;
                border: none;
            }

            QTableView#historyTable::item {
                padding: 12px 15px;
                border-bottom: 1px solid rgba(74, 85, 104, 0.5);
                color: #e2e8f0;
            }

            /* 操作按钮 */
            QPushButton#actionBtn {
                background-color: rgba(129, 140, 248, 0.1);
                color: #818cf8;
                border: 1px solid rgba(129, 140, 248, 0.2);
            }

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

            /* 重试按钮 */
            QPushButton#retryBtn {
                background-color: rgba(251, 113, 133, 0.1);
                color: #fb7185;
                border: 1px solid rgba(251, 113, 133, 0.2);
            }

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

            /* 删除按钮 */
            QPushButton#deleteBtn {
                background-color: rgba(120, 113, 108, 0.1);
                color: #a8a29e;
                border: 1px solid rgba(120, 113, 108, 0.2);
            }

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