// 确保所有导入都使用 ES 模块语法
import { app, BrowserWindow, ipcMain } from "electron";
import path from "path";
import { fileURLToPath } from "url";
import { checkDatabaseInitialized, initializeDatabase } from "./db/index.js";
// 导入配置项服务
import {
  fetchAllConfigs,
  fetchConfigById,
  saveConfig,
  removeConfig,
  getSystemConfig,
  updateSystemConfig,
  increaseQuestionBankVersion,
  initAuthIpc,
} from "./service/configService.js";
// 导入字典服务 - 使用实际导出的函数名称
import {
  fetchDictTypes,
  fetchDictItemsByTypeCode,
  createDictType,
  modifyDictType,
  removeDictType,
  createDictItem,
  modifyDictItem,
  removeDictItem,
  fetchDictItemsWithTypes,
  checkDictParentCode, // 添加这一行
  checkDictChildReferences, // 添加这一行
} from "./service/dictService.js";
// 导入题干服务
import {
  createQuestion,
  fetchAllQuestions,
  fetchQuestionById,
  modifyQuestion,
  removeQuestion,
  fetchAllQuestionsWithRelations,
  modifyQuestionDescription,
  createChoiceQuestion,
  modifyChoiceQuestion,
  createFillBlankQuestion,
  modifyFillBlankQuestion,
  removeFillBlankQuestion,
  fetchFillBlankQuestionsByQuestionId
} from './service/questionService.js';
import {
  createNewExam,
  fetchAllExams,
  fetchExamById,
  modifyExam,
  removeExam,
  fetchLastExam, // 添加这一行
} from "./service/examService.js";

// 添加考生服务导入
// 在文件开头的导入语句中添加新函数
import {
  fetchAllExaminees,
  fetchExamineeById,
  createExamineeService,
  updateExamineeService,
  deleteExamineeService,
  fetchExamineeByIdCardAndAdmissionTicket,
} from "./service/examineeService.js";

// 定义 __dirname 和 __filename
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

// 确保在应用最开始处添加单实例锁检查
// 尝试获取单实例锁
const gotTheLock = app.requestSingleInstanceLock();

// 如果获取锁失败，说明已有实例在运行，直接退出
if (!gotTheLock) {
  app.quit();
} else {
  // 设置第二个实例启动时的处理
  app.on("second-instance", (event, commandLine, workingDirectory) => {
    // 当用户尝试启动第二个实例时，聚焦到已有的主窗口
    const mainWindow = BrowserWindow.getAllWindows()[0];
    if (mainWindow) {
      if (mainWindow.isMinimized()) mainWindow.restore();
      mainWindow.focus();
    }
  });
}

// 保存主窗口引用
let mainWindow = null;

function createWindow() {
  // 如果已经有窗口，直接返回
  if (mainWindow) {
    return;
  }

  mainWindow = new BrowserWindow({
    fullscreen: true,
    webPreferences: {
      preload: path.join(__dirname, "../electron/preload.js"),
      nodeIntegration: false,
      contextIsolation: true,
    },
  });

  if (process.env.NODE_ENV === "development") {
    mainWindow.loadURL("http://localhost:5173/");
    mainWindow.webContents.openDevTools();
  } else {
    mainWindow.loadFile(path.join(__dirname, "../dist/index.html"));
  }

  // 当窗口关闭时，清空引用
  mainWindow.on("closed", () => {
    mainWindow = null;
  });
}

// Initalize app
app.whenReady().then(() => {
  setupApp();
  createWindow();
  setupIpcMain();
});

app.on("window-all-closed", () => {
  if (process.platform !== "darwin") {
    app.quit();
  }
});

app.on("activate", () => {
  // 只有当没有窗口时才创建新窗口
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow();
  }
});

// Check database initialization status
async function setupApp() {
  try {
    console.log("应用启动 - 检查数据库初始化状态...");

    // 使用全局变量防止重复初始化检查
    if (global.dbInitCheck) {
      console.log("数据库初始化检查已完成");
      return;
    }
    global.dbInitCheck = true;

    const isInitialized = await checkDatabaseInitialized();
    console.log("数据库初始化状态:", isInitialized);

    // 只检查状态，不自动初始化
  } catch (error) {
    console.error("数据库检查过程中出错:", error);
  }
}

function setupIpcMain() {
  // 考生登录IPC
  ipcMain.handle("user-login", async (event, {idCard, admissionTicket}) => {
    // return {data: 'hello world'};
    try {
      const examinee = await fetchExamineeByIdCardAndAdmissionTicket(idCard, admissionTicket);
      console.log(examinee);
      // const examinee = 'hello world';
      if (examinee) {
        return { success: true, data: examinee };
      } else {
        return { success: false, error: "未找到匹配的考生信息" };
      }
    } catch (error) {
      console.error("Failed to login examinee:", error);
      return { success: false, error: error.message };
    }
  });
  // 数据库相关
  ipcMain.handle("check-database-initialized", async () => {
    try {
      return await checkDatabaseInitialized();
    } catch (error) {
      console.error("Failed to check database initialization:", error);
      return false;
    }
  });

  ipcMain.handle("initialize-database", async () => {
    try {
      return await initializeDatabase();
    } catch (error) {
      console.error("Failed to initialize database:", error);
      return false;
    }
  });

  // 系统相关
  ipcMain.handle("system-get-config", async () => {
    try {
      return await getSystemConfig();
    } catch (error) {
      console.error("Failed to get system config:", error);
      return null;
    }
  });

  ipcMain.handle("system-update-config", async (event, config) => {
    try {
      return await updateSystemConfig(config);
    } catch (error) {
      console.error("Failed to update system config:", error);
      return false;
    }
  });

  ipcMain.handle("system-increase-question-band-version", async () => {
    try {
      return await increaseQuestionBankVersion();
    } catch (error) {
      console.error("Failed to increase question band version:", error);
      return false;
    }
  });

  // 初始化认证相关IPC
  initAuthIpc(ipcMain);

  // 配置项管理相关IPC
  ipcMain.handle("config-fetch-all", async () => {
    try {
      return await fetchAllConfigs();
    } catch (error) {
      console.error("Failed to fetch all configs:", error);
      throw error;
    }
  });

  ipcMain.handle("config-fetch-by-id", async (event, id) => {
    try {
      return await fetchConfigById(id);
    } catch (error) {
      console.error(`Failed to fetch config by id ${id}:`, error);
      throw error;
    }
  });

  ipcMain.handle("config-save", async (event, { key, value }) => {
    try {
      await saveConfig(key, value);
      return true;
    } catch (error) {
      console.error(`Failed to save config ${key}:`, error);
      throw error;
    }
  });

  ipcMain.handle("config-delete", async (event, id) => {
    try {
      await removeConfig(id);
      return true;
    } catch (error) {
      console.error(`Failed to delete config ${id}:`, error);
      throw error;
    }
  });

  // 字典管理相关IPC - 使用正确的函数名称
  ipcMain.handle("dict-fetch-types", async () => {
    try {
      return await fetchDictTypes();
    } catch (error) {
      console.error("Failed to fetch dict types:", error);
      throw error;
    }
  });

  ipcMain.handle(
    "dict-fetch-items-by-type",
    async (event, typeCode, isActive = undefined) => {
      try {
        return await fetchDictItemsByTypeCode(typeCode, isActive);
      } catch (error) {
        console.error(`Failed to fetch dict items by type ${typeCode}:`, error);
        throw error;
      }
    }
  );

  ipcMain.handle("dict-create-type", async (event, dictType) => {
    try {
      return await createDictType(dictType);
    } catch (error) {
      console.error("Failed to create dict type:", error);
      throw error;
    }
  });

  // 将 updateDictType 改为 modifyDictType
  ipcMain.handle("dict-update-type", async (event, dictType) => {
    try {
      return await modifyDictType(dictType.id, dictType);
    } catch (error) {
      console.error("Failed to update dict type:", error);
      throw error;
    }
  });

  // 将 deleteDictType 改为 removeDictType
  ipcMain.handle("dict-delete-type", async (event, typeCode) => {
    try {
      return await removeDictType(typeCode);
    } catch (error) {
      console.error(`Failed to delete dict type ${typeCode}:`, error);
      throw error;
    }
  });

  ipcMain.handle("dict-create-item", async (event, dictItem) => {
    try {
      return await createDictItem(dictItem);
    } catch (error) {
      console.error("Failed to create dict item:", error);
      throw error;
    }
  });

  // 将 updateDictItem 改为 modifyDictItem
  ipcMain.handle("dict-update-item", async (event, dictItem) => {
    try {
      return await modifyDictItem(dictItem.id, dictItem);
    } catch (error) {
      console.error("Failed to update dict item:", error);
      throw error;
    }
  });

  // 将 deleteDictItem 改为 removeDictItem
  ipcMain.handle("dict-delete-item", async (event, id) => {
    try {
      return await removeDictItem(id);
    } catch (error) {
      console.error(`Failed to delete dict item ${id}:`, error);
      throw error;
    }
  });

  // 将 fetchAllDictItemsWithTypes 改为 fetchDictItemsWithTypes
  ipcMain.handle("dict-fetch-all-items-with-types", async () => {
    try {
      return await fetchDictItemsWithTypes();
    } catch (error) {
      console.error("Failed to fetch all dict items with types:", error);
      throw error;
    }
  });
  // 添加在setupIpcMain函数中
  // 检查parent_code是否存在
  ipcMain.handle("dict-check-parent-code", async (event, parentCode) => {
    try {
      return await checkDictParentCode(parentCode); // 修改这一行
    } catch (error) {
      console.error("检查parent_code失败:", error);
      throw error;
    }
  });

  // 检查是否有子引用
  ipcMain.handle("dict-check-child-references", async (event, itemCode) => {
    try {
      return await checkDictChildReferences(itemCode); // 修改这一行
    } catch (error) {
      console.error("检查子引用失败:", error);
      throw error;
    }
  });

  // 题干管理相关IPC
  ipcMain.handle("question-create", async (event, questionData) => {
    try {
      return await createQuestion(questionData);
    } catch (error) {
      console.error("Failed to create question:", error);
      throw error;
    }
  });

  ipcMain.handle("question-fetch-all", async () => {
    try {
      return await fetchAllQuestions();
    } catch (error) {
      console.error("Failed to fetch questions:", error);
      throw error;
    }
  });

  ipcMain.handle("question-fetch-by-id", async (event, id) => {
    try {
      return await fetchQuestionById(id);
    } catch (error) {
      console.error(`Failed to fetch question by id ${id}:`, error);
      throw error;
    }
  });

  ipcMain.handle("question-update", async (event, id, questionData) => {
    try {
      return await modifyQuestion(id, questionData);
    } catch (error) {
      console.error("Failed to update question:", error);
      throw error;
    }
  });

  ipcMain.handle("question-delete", async (event, id) => {
    try {
      return await removeQuestion(id);
    } catch (error) {
      console.error(`Failed to delete question ${id}:`, error);
      throw error;
    }
  });

  // 在已有的 question 相关 IPC 处理程序区域添加
  ipcMain.handle("question-fetch-all-with-relations", async (event) => {
    try {
      return await fetchAllQuestionsWithRelations();
    } catch (error) {
      console.error("Failed to fetch all questions with relations:", error);
      throw error;
    }
  });

  // 添加更新题干描述的 IPC 处理程序
  ipcMain.handle(
    "question-update-description",
    async (event, id, questionDescription) => {
      try {
        return await modifyQuestionDescription(id, questionDescription);
      } catch (error) {
        console.error("Failed to update question description:", error);
        throw error;
      }
    }
  );

  // 添加选择题问题的IPC处理程序
  ipcMain.handle('question-update-choice', async (event, id, choiceData) => {
    try {
      return await modifyChoiceQuestion(id, choiceData);
    } catch (error) {
      console.error('Failed to update choice question:', error);
      throw error;
    }
  });

  // 添加选择题问题的IPC处理程序
  ipcMain.handle("question-create-choice", async (event, choiceData) => {
    try {
      return await createChoiceQuestion(choiceData);
    } catch (error) {
      console.error("Failed to create choice question:", error);
      throw error;
    }
  });

  // 添加填空题问题的IPC处理程序
  ipcMain.handle('question-create-fill-blank', async (event, fillBlankData) => {
    try {
      return await createFillBlankQuestion(fillBlankData);
    } catch (error) {
      console.error('Failed to create fill blank question:', error);
      throw error;
    }
  });

  // 更新填空题问题的IPC处理程序
  ipcMain.handle('question-update-fill-blank', async (event, id, fillBlankData) => {
    try {
      return await modifyFillBlankQuestion(id, fillBlankData);
    } catch (error) {
      console.error('Failed to update fill blank question:', error);
      throw error;
    }
  });

  // 删除填空题问题的IPC处理程序
  ipcMain.handle('question-delete-fill-blank', async (event, id) => {
    try {
      return await removeFillBlankQuestion(id);
    } catch (error) {
      console.error(`Failed to delete fill blank question ${id}:`, error);
      throw error;
    }
  });

  // 根据题干ID查询填空题问题的IPC处理程序
  ipcMain.handle('question-fetch-fill-blank-by-question-id', async (event, questionId) => {
    try {
      return await fetchFillBlankQuestionsByQuestionId(questionId);
    } catch (error) {
      console.error(`Failed to fetch fill blank questions by question id ${questionId}:`, error);
      throw error;
    }
  });

  // 考试管理相关IPC
  ipcMain.handle("exam-create", async (event, examData) => {
    try {
      // 确保exam_notice是序列化的JSON字符串
      if (examData.exam_notice && typeof examData.exam_notice === "object") {
        examData.exam_notice = JSON.stringify(examData.exam_notice);
      }
      return await createNewExam(examData);
    } catch (error) {
      console.error("Failed to create exam:", error);
      throw error;
    }
  });

  ipcMain.handle("exam-update", async (event, { id, examData }) => {
    try {
      // 确保exam_notice是序列化的JSON字符串
      if (examData.exam_notice && typeof examData.exam_notice === "object") {
        examData.exam_notice = JSON.stringify(examData.exam_notice);
      }
      return await modifyExam(id, examData);
    } catch (error) {
      console.error("Failed to update exam:", error);
      throw error;
    }
  });

  ipcMain.handle("exam-fetch-last", async () => {
    try {
      const exam = await fetchLastExam();
      // 将exam_notice字符串解析为数组
      if (exam && exam.exam_notice) {
        try {
          exam.exam_notice = JSON.parse(exam.exam_notice);
        } catch (e) {
          console.error("解析考试须知失败:", e);
          exam.exam_notice = [];
        }
      }
      return exam;
    } catch (error) {
      console.error("Failed to fetch last exam:", error);
      throw error;
    }
  });

  ipcMain.handle("exam-fetch-all", async () => {
    try {
      return { success: true, data: await fetchAllExams() };
    } catch (error) {
      console.error("Failed to fetch all exams:", error);
      return { success: false, error: error.message };
    }
  });

  ipcMain.handle("exam-fetch-last", async () => {
    try {
      return { success: true, data: await fetchLastExam() };
    } catch (error) {
      console.error("Failed to fetch last exam:", error);
      return { success: false, error: error.message };
    }
  });

  ipcMain.handle("exam-fetch-by-id", async (event, id) => {
    try {
      return { success: true, data: await fetchExamById(id) };
    } catch (error) {
      console.error(`Failed to fetch exam by id ${id}:`, error);
      return { success: false, error: error.message };
    }
  });

  ipcMain.handle("exam-update", async (event, { id, examData }) => {
    try {
      const result = await modifyExam(id, examData);
      return { success: result, data: { id, ...examData } };
    } catch (error) {
      console.error(`Failed to update exam ${id}:`, error);
      return { success: false, error: error.message };
    }
  });

  ipcMain.handle("exam-delete", async (event, id) => {
    try {
      const result = await removeExam(id);
      return { success: result, data: { id } };
    } catch (error) {
      console.error(`Failed to delete exam ${id}:`, error);
      return { success: false, error: error.message };
    }
  });

  // 考生管理相关IPC
  ipcMain.handle("examinee-create", async (event, examineeData) => {
    try {
      return await createExamineeService(examineeData);
    } catch (error) {
      console.error("Failed to create examinee:", error);
      throw error;
    }
  });

  ipcMain.handle("examinee-fetch-all", async () => {
    try {
      return await fetchAllExaminees();
    } catch (error) {
      console.error("Failed to fetch all examinees:", error);
      return [];
    }
  });

  ipcMain.handle("examinee-fetch-by-id", async (event, id) => {
    try {
      return await fetchExamineeById(id);
    } catch (error) {
      console.error("Failed to fetch examinee by id:", error);
      return null;
    }
  });

  ipcMain.handle("examinee-update", async (event, id, examineeData) => {
    try {
      return await updateExamineeService(id, examineeData);
    } catch (error) {
      console.error("Failed to update examinee:", error);
      return false;
    }
  });

  ipcMain.handle("examinee-delete", async (event, id) => {
    try {
      return await deleteExamineeService(id);
    } catch (error) {
      console.error("Failed to delete examinee:", error);
      return false;
    }
  });

}

// 确保在 app.whenReady() 中调用 setupIpcMain()
app.whenReady().then(() => {
  setupApp();
  createWindow();
  setupIpcMain();
});

// 在应用退出前关闭所有数据库连接
app.on("will-quit", () => {
  console.log("应用即将退出...");
  // closeAllConnections();
});