/**
 * 系统配置管理API - 后台管理
 * 提供系统配置的CRUD操作
 */

const Framework = require("../../framework/node-core-framework.js");

const normalizeConfigValue = (config) => {
  if (!config) {
    return config;
  }

  const normalized = { ...config };

  if (normalized.configType === 'json' && normalized.configValue) {
    normalized.configValue = JSON.parse(normalized.configValue);
  } else if (normalized.configType === 'boolean') {
    normalized.configValue = normalized.configValue === 'true' || normalized.configValue === '1';
  } else if (normalized.configType === 'number') {
    normalized.configValue = parseFloat(normalized.configValue) || 0;
  }

  return normalized;
};

const formatConfigValueForSave = (configType, configValue) => {
  if (configType === 'json' && typeof configValue === 'object') {
    return JSON.stringify(configValue);
  }

  if (configType === 'boolean') {
    return configValue ? 'true' : 'false';
  }

  return String(configValue);
};

module.exports = {
  /**
   * @swagger
   * /admin_api/config/list:
   *   post:
   *     summary: 获取配置列表
   *     description: 分页获取系统配置列表
   *     tags: [后台-系统配置]
   *     requestBody:
   *       required: true
   *       content:
   *         application/json:
   *           schema:
   *             type: object
   *             properties:
   *               page:
   *                 type: integer
   *                 description: 页码
   *               pageSize:
   *                 type: integer
   *                 description: 每页数量
   *               category:
   *                 type: string
   *                 description: 配置分类(可选)
   *     responses:
   *       200:
   *         description: 获取成功
   */
  'POST /config/list': async (ctx) => {
    const models = Framework.getModels();
    const { system_config, op } = models;
    const body = ctx.getBody();
    const { category, searchText} = ctx.getBody();
    
    // 获取分页参数
    const { limit, offset, page, pageSize } = ctx.getPageSize();

    const where = {};
    if (category) where.category = category;
    
    // 支持搜索配置键或名称
    if (searchText) {
      where[op.or] = [
        { configKey: { [op.like]: `%${searchText}%` } },
        { configName: { [op.like]: `%${searchText}%` } }
      ];
    }

    const result = await system_config.findAndCountAll({
      where,
      limit,
      offset,
      order: [
        ['category', 'ASC'],
        ['sortOrder', 'ASC'],
        ['id', 'ASC']
      ]
    });

    const list = result.rows.map(item => normalizeConfigValue(item.toJSON()));

    return ctx.success({
      total: result.count,
      page,
      pageSize,
      list
    });
  },

  /**
   * @swagger
   * /admin_api/config/get:
   *   get:
   *     summary: 获取配置详情
   *     description: 根据配置键获取配置详情
   *     tags: [后台-系统配置]
   *     parameters:
   *       - in: query
   *         name: configKey
   *         required: true
   *         schema:
   *           type: string
   *         description: 配置键
   *     responses:
   *       200:
   *         description: 获取成功
   */
  'GET /config/get': async (ctx) => {
    const models = Framework.getModels();
    const { system_config } = models;
    const { configKey } = ctx.query;

    if (!configKey) {
      return ctx.fail('配置键不能为空');
    }

    const config = await system_config.findOne({ where: { configKey } });

    if (!config) {
      return ctx.fail('配置不存在');
    }

    const configData = normalizeConfigValue(config.toJSON());

    return ctx.success(configData);
  },

  /**
   * @swagger
   * /admin_api/config/add:
   *   post:
   *     summary: 添加配置
   *     description: 添加新的系统配置
   *     tags: [后台-系统配置]
   *     requestBody:
   *       required: true
   *       content:
   *         application/json:
   *           schema:
   *             type: object
   *             required:
   *               - configKey
   *               - configValue
   *               - category
   *             properties:
   *               configKey:
   *                 type: string
   *                 description: 配置键
   *               configValue:
   *                 type: string
   *                 description: 配置值
   *               configType:
   *                 type: string
   *                 description: 配置类型
   *               category:
   *                 type: string
   *                 description: 配置分类
   *               configName:
   *                 type: string
   *                 description: 配置名称
   *               description:
   *                 type: string
   *                 description: 配置描述
   *     responses:
   *       200:
   *         description: 添加成功
   */
  'POST /config/add': async (ctx) => {
    const models = Framework.getModels();
    const { system_config } = models;
    const body = ctx.getBody();
    const {
      configKey,
      configValue,
      configType = 'string',
      category,
      configName,
      description,
      defaultValue,
      sortOrder = 0,
      isActive = true,
      isSystem = false
    } = body;

    if (!configKey || configValue === undefined || !category) {
      return ctx.fail('配置键、配置值和分类不能为空');
    }

    const existingConfig = await system_config.findOne({ where: { configKey } });

    if (existingConfig) {
      return ctx.fail('配置键已存在');
    }

    const finalValue = formatConfigValueForSave(configType, configValue);

    await system_config.create({
      configKey,
      configValue: finalValue,
      configType,
      category,
      configName: configName || configKey,
      description: description || '',
      defaultValue: defaultValue || finalValue,
      sortOrder,
      isActive,
      isSystem,
      isVisible: true,
    });

    return ctx.success({ message: '配置添加成功' });
  },

  /**
   * @swagger
   * /admin_api/config/update:
   *   post:
   *     summary: 更新配置
   *     description: 更新系统配置
   *     tags: [后台-系统配置]
   *     requestBody:
   *       required: true
   *       content:
   *         application/json:
   *           schema:
   *             type: object
   *             required:
   *               - configKey
   *             properties:
   *               configKey:
   *                 type: string
   *                 description: 配置键
   *               configValue:
   *                 type: string
   *                 description: 配置值
   *               description:
   *                 type: string
   *                 description: 配置描述
   *     responses:
   *       200:
   *         description: 更新成功
   */
  'POST /config/update': async (ctx) => {
    const models = Framework.getModels();
    const { system_config } = models;
    const body = ctx.getBody();
    const {
      configKey,
      configValue,
      configName,
      description,
      sortOrder,
      isActive
    } = body;

    if (!configKey) {
      return ctx.fail('配置键不能为空');
    }

    const config = await system_config.findOne({ where: { configKey } });

    if (!config) {
      return ctx.fail('配置不存在');
    }

    const updateData = {};

    if (configValue !== undefined) {
      updateData.configValue = formatConfigValueForSave(config.configType, configValue);
    }

    if (configName) updateData.configName = configName;
    if (description) updateData.description = description;
    if (sortOrder !== undefined) updateData.sortOrder = sortOrder;
    if (isActive !== undefined) updateData.isActive = isActive;

    await system_config.update(updateData, { where: { configKey } });

    return ctx.success({ message: '配置更新成功' });
  },

  /**
   * @swagger
   * /admin_api/config/delete:
   *   post:
   *     summary: 删除配置
   *     description: 删除系统配置（系统配置不可删除）
   *     tags: [后台-系统配置]
   *     requestBody:
   *       required: true
   *       content:
   *         application/json:
   *           schema:
   *             type: object
   *             required:
   *               - configKey
   *             properties:
   *               configKey:
   *                 type: string
   *                 description: 配置键
   *     responses:
   *       200:
   *         description: 删除成功
   */
  'POST /config/delete': async (ctx) => {
    const models = Framework.getModels();
    const { system_config } = models;
    const body = ctx.getBody();
    const { configKey } = body;

    if (!configKey) {
      return ctx.fail('配置键不能为空');
    }

    
const config = await system_config.findOne({ where: { configKey } });

if (!config) {
  return ctx.fail('配置不存在');
}

if (config.isSystem) {
  return ctx.fail('系统配置不可删除');
}

await system_config.destroy({ where: { configKey } });

return ctx.success({ message: '配置删除成功' });
    
  },

  /**
   * @swagger
   * /admin_api/config/categories:
   *   get:
   *     summary: 获取配置分类列表
   *     description: 获取所有配置分类
   *     tags: [后台-系统配置]
   *     responses:
   *       200:
   *         description: 获取成功
   */
  'GET /config/categories': async (ctx) => {
    const models = Framework.getModels();
    const { system_config } = models;

    
const categories = await system_config.findAll({
  attributes: [
    'category',
    [models.sequelize.fn('COUNT', models.sequelize.col('*')), 'count']
  ],
  group: ['category'],
  raw: true
});

return ctx.success(categories);
    
  },

  /**
   * @swagger
   * /admin_api/config/reset:
   *   post:
   *     summary: 重置配置为默认值
   *     description: 将配置重置为默认值
   *     tags: [后台-系统配置]
   *     requestBody:
   *       required: true
   *       content:
   *         application/json:
   *           schema:
   *             type: object
   *             required:
   *               - configKey
   *             properties:
   *               configKey:
   *                 type: string
   *                 description: 配置键
   *     responses:
   *       200:
   *         description: 重置成功
   */
  'POST /config/reset': async (ctx) => {
    const models = Framework.getModels();
    const { system_config } = models;
    const body = ctx.getBody();
    const { configKey } = body;

    if (!configKey) {
      return ctx.fail('配置键不能为空');
    }

    
const config = await system_config.findOne({ where: { configKey } });

if (!config) {
  return ctx.fail('配置不存在');
}

if (!config.defaultValue) {
  return ctx.fail('该配置没有默认值');
}

await system_config.update({
  configValue: config.defaultValue,
}, { where: { configKey } });

return ctx.success({ message: '配置已重置为默认值' });
    
  },

  /**
   * @swagger
   * /admin_api/config/batch-update:
   *   post:
   *     summary: 批量更新配置
   *     description: 批量更新多个配置
   *     tags: [后台-系统配置]
   *     requestBody:
   *       required: true
   *       content:
   *         application/json:
   *           schema:
   *             type: object
   *             required:
   *               - configs
   *             properties:
   *               configs:
   *                 type: array
   *                 description: 配置数组
   *     responses:
   *       200:
   *         description: 更新成功
   */
  'POST /config/batch-update': async (ctx) => {
    const models = Framework.getModels();
    const { system_config } = models;
    const body = ctx.getBody();
    const { configs } = body;

    if (!configs || !Array.isArray(configs) || configs.length === 0) {
      return ctx.fail('配置数组不能为空');
    }

    let successCount = 0;
    let failedCount = 0;

    for (const item of configs) {
      const { configKey, configValue } = item;
      
      if (!configKey || configValue === undefined) {
        failedCount++;
        continue;
      }

      const config = await system_config.findOne({ where: { configKey } });

      if (!config) {
        failedCount++;
        continue;
      }

      const finalValue = formatConfigValueForSave(config.configType, configValue);

      await system_config.update({
        configValue: finalValue,
      }, { where: { configKey } });

      successCount++;
    }

    return ctx.success({
      message: '批量更新完成',
      total: configs.length,
      success: successCount,
      failed: failedCount
    });
  }
};