// 执行SQL语句的工具函数
const runAsync = (db, sql, params = []) => {
  return new Promise((resolve, reject) => {
    db.run(sql, params, function (err) {
      if (err) reject(err);
      else resolve(this);
    });
  });
};

// 系统数据库表结构
const systemSchema = {
  config: `
        CREATE TABLE IF NOT EXISTS config (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          key TEXT NOT NULL UNIQUE,
          value TEXT NOT NULL,
          protected INTEGER DEFAULT 0
        );
    `,
  dictTypes: `
        CREATE TABLE IF NOT EXISTS dict_types (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          type_code TEXT NOT NULL UNIQUE,
          type_name TEXT NOT NULL,
          description TEXT,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  dictItems: `
        CREATE TABLE IF NOT EXISTS dict_items (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          type_code TEXT NOT NULL,
          item_code TEXT NOT NULL,
          item_name TEXT NOT NULL,
          item_description TEXT DEFAULT '',
          parent_code TEXT,
          is_active BOOLEAN DEFAULT 1,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          UNIQUE(type_code, item_code)
        );
    `,
  questions: `
        CREATE TABLE IF NOT EXISTS questions (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_type TEXT NOT NULL,
          question_name TEXT NOT NULL DEFAULT '',
          question_description TEXT NOT NULL DEFAULT '',
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  questionDatasets: `
        CREATE TABLE IF NOT EXISTS question_datasets (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          dataset_name TEXT NOT NULL DEFAULT '',
          dataset_data TEXT NOT NULL,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  questionImages: `
        CREATE TABLE IF NOT EXISTS question_images (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          image_name TEXT NOT NULL DEFAULT '',
          image_base64 TEXT NOT NULL,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  questionFillTable: `
        CREATE TABLE IF NOT EXISTS question_fill_table (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          table_name TEXT NOT NULL DEFAULT '',
          table_data TEXT NOT NULL,
          table_description TEXT NOT NULL DEFAULT '',
          score REAL,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  questionFillTableBlanks: `
        CREATE TABLE IF NOT EXISTS question_fill_table_blanks (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          table_id INTEGER NOT NULL,
          cell_position TEXT NOT NULL,
          cell_type TEXT NOT NULL DEFAULT 'number',
          correct_answer TEXT NOT NULL DEFAULT '',
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  questionChoices: `
        CREATE TABLE IF NOT EXISTS question_choices (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          choice_description TEXT NOT NULL DEFAULT '',
          choice_type TEXT NOT NULL DEFAULT 'single',
          choice_options TEXT NOT NULL,
          correct_answers TEXT NOT NULL,
          score REAL,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  questionFillBlanks: `
        CREATE TABLE IF NOT EXISTS question_fill_blanks (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          blank_description TEXT NOT NULL DEFAULT '',
          blank_count INTEGER NOT NULL DEFAULT 0,
          correct_answers TEXT NOT NULL DEFAULT '',
          score REAL,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  questionJudge: `
        CREATE TABLE IF NOT EXISTS question_judge (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          judge_ask TEXT NOT NULL DEFAULT '',
          judge_answer INTEGER NOT NULL,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  questionShort: `
        CREATE TABLE IF NOT EXISTS question_short (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          short_ask TEXT NOT NULL DEFAULT '',
          short_answer_ref TEXT NOT NULL DEFAULT '',
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  exam: `
        CREATE TABLE IF NOT EXISTS exam (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          exam_name TEXT NOT NULL DEFAULT '',
          exam_description TEXT NOT NULL DEFAULT '',
          exam_examinee_type TEXT NOT NULL DEFAULT '',
          exam_notice TEXT NOT NULL DEFAULT '',
          exam_minutes INTEGER NOT NULL DEFAULT 0,
          exam_minutes_min INTEGER NOT NULL DEFAULT 0,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  examinee: `
        CREATE TABLE IF NOT EXISTS examinee (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          examinee_name TEXT NOT NULL DEFAULT '',
          examinee_gender TEXT NOT NULL DEFAULT '',
          examinee_unit TEXT NOT NULL DEFAULT '',
          written_exam_room TEXT NOT NULL DEFAULT '',
          written_exam_seat TEXT NOT NULL DEFAULT '',
          computer_exam_room TEXT NOT NULL DEFAULT '',
          computer_exam_seat TEXT NOT NULL DEFAULT '',
          examinee_id_card TEXT NOT NULL DEFAULT '',
          examinee_admission_ticket TEXT NOT NULL DEFAULT '',
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `
};

// 用户数据库表结构
userSchema = {
  examinee: `
        CREATE TABLE IF NOT EXISTS examinee (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          examinee_name TEXT NOT NULL DEFAULT '',
          examinee_gender TEXT,
          examinee_unit TEXT,
          written_exam_room TEXT,
          written_exam_seat TEXT,
          computer_exam_room TEXT,
          computer_exam_seat TEXT,
          examinee_id_card TEXT NOT NULL DEFAULT '',
          examinee_admission_ticket TEXT NOT NULL DEFAULT '',
          created_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  examinee_papers: `
        CREATE TABLE IF NOT EXISTS examinee_papers (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          examinee_id INTEGER NOT NULL,
          paper_minutes INTEGER NOT NULL DEFAULT 0,
          paper_minutes_min INTEGER NOT NULL DEFAULT 0,
          paper_start_time TEXT,
          paper_last_time TEXT,
          paper_submit_time TEXT,
          paper_end_time TEXT,
          paper_duration_seconds INTEGER DEFAULT 0,
          paper_status INTEGER NOT NULL DEFAULT 0,
          paper_score_real REAL DEFAULT 0,
          paper_score REAL DEFAULT 0,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  paper_questions: `
        CREATE TABLE IF NOT EXISTS paper_questions (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          examinee_id INTEGER NOT NULL,
          paper_id INTEGER NOT NULL,
          question_type TEXT NOT NULL,
          question_name TEXT NOT NULL DEFAULT '',
          question_description TEXT NOT NULL DEFAULT '',
          created_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  question_datasets: `
        CREATE TABLE IF NOT EXISTS question_datasets (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          dataset_name TEXT NOT NULL DEFAULT '',
          dataset_data TEXT NOT NULL,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  question_images: `
        CREATE TABLE IF NOT EXISTS question_images (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          image_name TEXT NOT NULL DEFAULT '',
          image_base64 TEXT NOT NULL,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  question_choices: `
        CREATE TABLE IF NOT EXISTS question_choices (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          choice_description TEXT NOT NULL DEFAULT '',
          choice_type TEXT NOT NULL DEFAULT 'single',
          choice_options TEXT NOT NULL,
          correct_answers TEXT NOT NULL,
          examinee_answers TEXT NOT NULL DEFAULT '',
          score REAL,
          score_real REAL DEFAULT 0,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `,
  question_fill_blanks: `
        CREATE TABLE IF NOT EXISTS question_fill_blanks (
          id INTEGER PRIMARY KEY AUTOINCREMENT,
          question_id INTEGER NOT NULL,
          blank_description TEXT NOT NULL DEFAULT '',
          blank_count INTEGER NOT NULL DEFAULT 0,
          correct_answers TEXT NOT NULL DEFAULT '',
          examinee_answers TEXT NOT NULL DEFAULT '',
          score REAL,
          score_real REAL DEFAULT 0,
          created_at TEXT DEFAULT CURRENT_TIMESTAMP,
          updated_at TEXT DEFAULT CURRENT_TIMESTAMP
        );
    `
};


// 导出函数和常量供其他模块使用
module.exports = {
  runAsync,
  systemSchema,
  userSchema
};