const { app, BrowserWindow, ipcMain, dialog, Menu } = require('electron');
const path = require('path');
const fs = require('fs-extra');
let isDev;
import('electron-is-dev').then(module => {
  isDev = module.default;
}).catch(err => {
  console.error('Failed to load electron-is-dev:', err);
  isDev = false;
});
const sqlite3 = require('sqlite3').verbose();
const ExcelService = require('./src/services/ExcelService');

// 保持对window对象的全局引用，避免JavaScript对象被垃圾回收时，窗口被自动关闭
let mainWindow;

// 数据库连接
let db;

function createWindow() {
  // 创建浏览器窗口
  mainWindow = new BrowserWindow({
    width: 1200,
    height: 800,
    title: '值班助手工具',
    webPreferences: {
      nodeIntegration: false,
      contextIsolation: true,
      preload: path.join(__dirname, 'preload.js')
    }
  });

  // 加载应用
  const loadAppUrl = () => {
    const devUrl = 'http://localhost:3000';
    const prodUrl = `file://${path.join(__dirname, 'build/index.html')}`;
    const url = isDev ? devUrl : prodUrl;

    mainWindow.loadURL(url).catch((err) => {
      if (isDev) {
        console.log(`首次加载失败，10秒后重试...`);
        let retries = 3;
        const retryLoad = () => {
          mainWindow.loadURL(devUrl).catch((retryErr) => {
            if (retries-- > 0) {
              console.log(`剩余重试次数：${retries}`);
              setTimeout(retryLoad, 10000);
            } else {
              mainWindow.loadURL(`data:text/html,<h1 style="color:red">无法连接开发服务器，请检查：</h1>
                <ol>
                  <li>React开发服务器是否启动（npm run react-start）</li>
                  <li>端口3000是否被占用</li>
                  <li>网络连接是否正常</li>
                </ol>`);
            }
          });
        };
        setTimeout(retryLoad, 10000);
      } else {
        mainWindow.loadURL(prodUrl).catch(() => {
          mainWindow.loadURL(`data:text/html,<h1 style="color:red">生产文件加载失败，请重新编译（npm run react-build）</h1>`);
        });
      }
    });
  };

  // 开发模式立即尝试加载，生产模式直接加载
  if (isDev) {
    setTimeout(loadAppUrl, 3000); // 给开发服务器更多启动时间
  } else {
    loadAppUrl();
  }

  // 开发者工具已禁用

  // 当window被关闭时，触发下面的事件
  mainWindow.on('closed', () => {
    mainWindow = null;
    // 关闭数据库连接
    if (db) {
      db.close();
    }
  });
}

// 初始化数据库
function initDatabase() {
  const userDataPath = app.getPath('userData');
  const dbPath = path.join(userDataPath, 'datatools.db');
  
  // 确保目录存在
  fs.ensureDirSync(path.dirname(dbPath));
  
  // 连接数据库
  db = new sqlite3.Database(dbPath);
  
  // 创建表（如果不存在）
  db.serialize(() => {
    db.run(`
      CREATE TABLE IF NOT EXISTS projects (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        unit TEXT,                     -- 单位
        project_number TEXT,           -- 项目编号
        safety_code TEXT,              -- 安全编码
        major_project_name TEXT,       -- 大项工程名称
        sub_project_name TEXT,         -- 单项工程名称
        construction_scope TEXT,       -- 在施工程作业范围
        project_scale TEXT,            -- 工程规模
        safety_director TEXT,          -- 安全总监
        construction_unit TEXT,        -- 建设单位
        supervision_unit TEXT,         -- 监理单位
        construction_company TEXT,     -- 施工单位
        project_location TEXT,         -- 工程位置
        actual_start_time TEXT,        -- 实际开工时间
        planned_completion_time TEXT,  -- 计划竣工时间
        current_progress TEXT,         -- 当前工程进度
        current_status TEXT,           -- 当前工程状态
        participants_count INTEGER,    -- 参建人数
        new_team_count INTEGER,        -- 新班组进场数量
        new_person_count INTEGER,      -- 新人进场数量
        leader_info TEXT,              -- 带班人姓名、电话
        next_week_plan TEXT,           -- 下周作业计划
        next_week_condition TEXT,      -- 下周8+2工况内容
        is_schedule_tight BOOLEAN,     -- 工期是否紧张
        has_off_book_matters BOOLEAN,  -- 是否存在"账外事"
        current_risk_level TEXT,       -- 当前风险等级
        risk_judgment_reason TEXT,     -- 当前风险判断理由
        risk_tips TEXT,                -- 隐患提示/工作要求
        completion_time TEXT,          -- 完成时间
        next_review_time TEXT,         -- 下次梳理时间
        remarks TEXT                   -- 备注
      )
    `);

    db.run(`
      CREATE TABLE IF NOT EXISTS tree_structure (
        id INTEGER PRIMARY KEY AUTOINCREMENT,
        headquarters TEXT,             -- 总部
        unit TEXT,                     -- 单位
        construction_unit TEXT,        -- 建设单位
        parent_id INTEGER,             -- 父节点ID
        node_level INTEGER,            -- 节点级别（1:总部, 2:单位, 3:建设单位）
        FOREIGN KEY (parent_id) REFERENCES tree_structure(id)
      )
    `);

    db.run(`CREATE INDEX IF NOT EXISTS idx_unit ON projects(unit)`);
    db.run(`CREATE INDEX IF NOT EXISTS idx_construction_unit ON projects(construction_unit)`);
    db.run(`CREATE INDEX IF NOT EXISTS idx_sub_project_name ON projects(sub_project_name)`);
    db.run(`CREATE INDEX IF NOT EXISTS idx_current_risk_level ON projects(current_risk_level)`);
  });
  
  return db;
}

// 创建中文菜单模板
const menuTemplate = [
  {
    label: '文件',
    submenu: [
      { role: 'quit', label: '退出' }
    ]
  },
  {
    label: '编辑',
    submenu: [
      { role: 'undo', label: '撤销' },
      { role: 'redo', label: '恢复' },
      { type: 'separator' },
      { role: 'cut', label: '剪切' },
      { role: 'copy', label: '复制' },
      { role: 'paste', label: '粘贴' },
      { role: 'delete', label: '删除' },
      { role: 'selectAll', label: '全选' }
    ]
  },
  {
    label: '视图',
    submenu: [
      { role: 'reload', label: '重新加载' },
      { role: 'forceReload', label: '强制重新加载' },
      { role: 'toggleDevTools', label: '开发者工具' },
      { type: 'separator' },
      { role: 'resetZoom', label: '重置缩放' },
      { role: 'zoomIn', label: '放大' },
      { role: 'zoomOut', label: '缩小' },
      { type: 'separator' },
      { role: 'togglefullscreen', label: '全屏' }
    ]
  },
  {
    label: '窗口',
    submenu: [
      { role: 'minimize', label: '最小化' },
      { role: 'zoom', label: '缩放' },
      { type: 'separator' },
      { role: 'front', label: '前置所有窗口' }
    ]
  },
  {
    label: '帮助',
    submenu: [
      {
        label: '关于',
        click: () => {
          dialog.showMessageBox({
            title: '关于',
            message: '值班助手工具 v1.0.0'
          })
        }
      }
    ]
  }
];

// 当Electron完成初始化并准备创建浏览器窗口时调用此方法
app.whenReady().then(() => {
  // 设置中文菜单
  const menu = Menu.buildFromTemplate(menuTemplate);
  Menu.setApplicationMenu(menu);
  createWindow();
  db = initDatabase();
  
  // 初始化Excel服务
  const excelService = new ExcelService(db);
  
  // 注册import-excel事件处理器（确保只注册一次）
  ipcMain.removeHandler('import-excel'); // 先移除已有的处理器
  ipcMain.handle('import-excel', async (event, filePath) => {
    try {
      console.log('处理Excel导入请求...');
      return await excelService.importExcel(filePath);
    } catch (error) {
      console.error('导入Excel错误:', error);
      return { success: false, error: error.message };
    }
  });
  
  app.on('activate', () => {
    // 在macOS上，当点击dock图标并且没有其他窗口打开时，通常在应用程序中重新创建一个窗口
    if (BrowserWindow.getAllWindows().length === 0) {
      createWindow();
    }
  });
});

// 当所有窗口关闭时退出应用
app.on('window-all-closed', () => {
  // 在macOS上，除非用户用Cmd + Q确定地退出，否则绝大部分应用及其菜单栏会保持激活
  if (process.platform !== 'darwin') {
    app.quit();
  }
});

// 处理Excel文件选择
ipcMain.handle('select-excel-file', async () => {
  const { canceled, filePaths } = await dialog.showOpenDialog(mainWindow, {
    properties: ['openFile'],
    filters: [
      { name: 'Excel Files', extensions: ['xlsx', 'xls'] }
    ]
  });
  
  if (canceled) {
    return null;
  }
  
  return filePaths[0];
});

// 获取数据库中的项目数据
ipcMain.handle('get-projects', () => {
  return new Promise((resolve, reject) => {
    db.all('SELECT * FROM projects', (err, rows) => {
      if (err) {
        console.error('获取项目数据失败:', err);
        reject(err);
      } else {
        resolve(rows || []);
      }
    });
  });
});

// 获取树状结构数据
ipcMain.handle('get-tree-structure', () => {
  return new Promise((resolve, reject) => {
    db.all('SELECT * FROM tree_structure ORDER BY node_level, id', (err, rows) => {
      if (err) {
        console.error('获取树状结构数据失败:', err);
        reject(err);
      } else {
        // 转换为Ant Design Tree组件所需的格式
        const treeData = [];
        const nodeMap = {};
        
        // 首先找到总部节点
        const headquartersNodes = rows.filter(node => node.node_level === 1);
        
        // 处理每个总部节点
        headquartersNodes.forEach(hqNode => {
          const headquartersTreeNode = {
            key: `headquarters-${hqNode.id}`,
            title: hqNode.headquarters,
            level: 1,
            children: []
          };
          
          // 添加到树数据和节点映射
          treeData.push(headquartersTreeNode);
          nodeMap[hqNode.id] = headquartersTreeNode;
          
          // 找到该总部下的所有单位节点
          const unitNodes = rows.filter(node => 
            node.node_level === 2 && node.parent_id === hqNode.id
          );
          
          // 处理每个单位节点
          unitNodes.forEach(unitNode => {
            const unitTreeNode = {
              key: `unit-${unitNode.unit}`,
              title: unitNode.unit,
              level: 2,
              children: []
            };
            
            // 添加到总部节点的子节点和节点映射
            headquartersTreeNode.children.push(unitTreeNode);
            nodeMap[unitNode.id] = unitTreeNode;
            
            // 找到该单位下的所有建设单位节点
            const constructionNodes = rows.filter(node => 
              node.node_level === 3 && node.parent_id === unitNode.id
            );
            
            // 处理每个建设单位节点
            constructionNodes.forEach(constructionNode => {
              const constructionTreeNode = {
                key: `construction-${unitNode.unit}-${constructionNode.construction_unit}`,
                title: constructionNode.construction_unit,
                level: 3,
                isLeaf: true
              };
              
              // 添加到单位节点的子节点
              unitTreeNode.children.push(constructionTreeNode);
            });
          });
        });
        
        console.log('树状结构数据转换完成，节点数量:', treeData.length);
        resolve(treeData);
      }
    });
  });
});

// 根据条件筛选项目数据
ipcMain.handle('filter-projects', (event, filters) => {
  return new Promise((resolve, reject) => {
    let query = 'SELECT * FROM projects WHERE 1=1';
    const params = [];
    
    if (filters.unit) {
      query += ' AND unit = ?';
      params.push(filters.unit);
    }
    
    if (filters.constructionUnit) {
      query += ' AND construction_unit = ?';
      params.push(filters.constructionUnit);
    }
    
    if (filters.subProjectName) {
      query += ' AND sub_project_name LIKE ?';
      params.push(`%${filters.subProjectName}%`);
    }
    
    if (filters.riskLevel) {
      query += ' AND current_risk_level = ?';
      params.push(filters.riskLevel);
    }
    
    db.all(query, params, (err, rows) => {
      if (err) {
        console.error('筛选项目数据失败:', err);
        reject(err);
      } else {
        resolve(rows || []);
      }
    });
  });
});

// 更新项目数据
ipcMain.handle('update-project', (event, project) => {
  return new Promise((resolve, reject) => {
    const query = `
      UPDATE projects SET
        unit = ?,
        project_number = ?,
        safety_code = ?,
        major_project_name = ?,
        sub_project_name = ?,
        construction_scope = ?,
        project_scale = ?,
        safety_director = ?,
        construction_unit = ?,
        supervision_unit = ?,
        construction_company = ?,
        project_location = ?,
        actual_start_time = ?,
        planned_completion_time = ?,
        current_progress = ?,
        current_status = ?,
        participants_count = ?,
        new_team_count = ?,
        new_person_count = ?,
        leader_info = ?,
        next_week_plan = ?,
        next_week_condition = ?,
        is_schedule_tight = ?,
        has_off_book_matters = ?,
        current_risk_level = ?,
        risk_judgment_reason = ?,
        risk_tips = ?,
        completion_time = ?,
        next_review_time = ?,
        remarks = ?
      WHERE id = ?
    `;
    
    db.run(query, [
      project.unit,
      project.project_number,
      project.safety_code,
      project.major_project_name,
      project.sub_project_name,
      project.construction_scope,
      project.project_scale,
      project.safety_director,
      project.construction_unit,
      project.supervision_unit,
      project.construction_company,
      project.project_location,
      project.actual_start_time,
      project.planned_completion_time,
      project.current_progress,
      project.current_status,
      project.participants_count,
      project.new_team_count,
      project.new_person_count,
      project.leader_info,
      project.next_week_plan,
      project.next_week_condition,
      project.is_schedule_tight,
      project.has_off_book_matters,
      project.current_risk_level,
      project.risk_judgment_reason,
      project.risk_tips,
      project.completion_time,
      project.next_review_time,
      project.remarks,
      project.id
    ], function(err) {
      if (err) {
        console.error('更新项目数据失败:', err);
        reject(err);
      } else {
        resolve({ success: true, changes: this.changes });
      }
    });
  });
});