const connection = require('../sql');
class PagesService {
  async listCount(keyword, userId, projectId) {
    let statement = '';
    if (projectId) {
      statement = `
        SELECT 
          count(p.id) total
        FROM 
          pages p
        LEFT JOIN   
          pages_role pr 
        ON 
          p.project_id = pr.page_id and pr.user_id = ${userId}
        WHERE 
          (p.name like COALESCE(CONCAT('%',?,'%'), p.name) OR ? IS NULL) 
        AND 
          p.project_id = ${projectId} 
        AND
          (pr.page_id IS NOT NULL OR p.user_id = ${userId})`;
    } else {
      statement = `
        SELECT 
            count(p.id) as total
        FROM 
          pages p
        LEFT JOIN   
          pages_role pr 
        ON 
          p.project_id = pr.page_id and pr.user_id = ${userId}
        WHERE 
          (
            (p.name like COALESCE(CONCAT('%',?,'%'), p.name) OR ? IS NULL) 
            AND p.user_id = ${userId}
          )
        AND
          (pr.page_id IS NOT NULL OR p.user_id = ${userId})
      `;
    }
    const [result] = await connection.execute(statement, [keyword || null, keyword || null]);
    return result[0];
  }
  async list(pageNum, pageSize, keyword, userId, projectId) {
    const offset = (+pageNum - 1) * pageSize + '';
    const limit = pageSize;
    let statement = '';
    if (projectId) {
      statement = `
        SELECT 
          p.id,
          p.name,
          p.user_id as userId,
          p.remark,
          p.app_type as appType,
          p.is_public as isPublic,
          p.is_edit as isEdit,
          p.preview_img as previewImg,
          p.stg_publish_id as stgPublishId,
          p.pre_publish_id as prePublishId,
          p.prd_publish_id as prdPublishId,
          p.stg_state as stgState,
          p.pre_state as preState,
          p.prd_state as prdState,
          p.project_id as projectId,
          p.updated_at as updatedAt,
          SUBSTRING_INDEX(p.user_name, '@', 1) as userName
        FROM 
          pages p
        LEFT JOIN   
          pages_role pr 
        ON 
          p.project_id = pr.page_id and pr.user_id = ${userId}
        WHERE 
          (p.name like COALESCE(CONCAT('%',?,'%'), p.name) OR ? IS NULL) 
        AND 
          p.project_id = ${projectId} 
        AND
          (pr.page_id IS NOT NULL OR p.user_id = ${userId})
        ORDER BY 
          p.updated_at DESC LIMIT ${offset},${limit};`;
    } else {
      statement = `
        SELECT 
          p.id,
          p.name,
          p.user_id as userId,
          p.remark,
          p.app_type as appType,
          p.is_public as isPublic,
          p.is_edit as isEdit,
          p.preview_img as previewImg,
          p.stg_publish_id as stgPublishId,
          p.pre_publish_id as prePublishId,
          p.prd_publish_id as prdPublishId,
          p.stg_state as stgState,
          p.pre_state as preState,
          p.prd_state as prdState,
          p.project_id as projectId,
          p.updated_at as updatedAt,
          SUBSTRING_INDEX(p.user_name, '@', 1) as userName
        FROM 
          pages p
        LEFT JOIN   
          pages_role pr 
        ON 
          pr.user_id = ${userId} and pr.page_id = p.id
        WHERE 
          (p.name like COALESCE(CONCAT('%',?,'%'), p.name) OR ? IS NULL) 
        AND 
          (p.user_id = ${userId} OR pr.page_id IS NOT NULL)
        ORDER BY 
          p.updated_at DESC LIMIT ${offset},${limit};`;
    }
    const [result] = await connection.execute(statement, [keyword || null, keyword || null]);
    return result;
  }

  // 根据模板项目ID查询页面ID
  async getPageIdsByProjectId(projectId) {
    const statement = `
    SELECT 
      id
    FROM 
      pages
    WHERE 
      project_id = ?;
    `;
    const [result] = await connection.execute(statement, [projectId]);
    return result;
  }

  // 查询项目总条数：mars-admin
  async getPageCount(isTemplate, userId) {
    let statement = `
      SELECT 
        count(id) total
      FROM 
        pages
      WHERE 
        1 = 1
    `;
    if (isTemplate !== '') {
      statement += ` and is_template = ${isTemplate}`;
    }
    if (userId) {
      statement += ` and user_id = ${userId}`;
    }
    const [result] = await connection.execute(statement, []);
    return result[0];
  }
  // 查询页面总条数：mars-admin
  async getPageList(pageNum, pageSize, isTemplate, userId) {
    const offset = (+pageNum - 1) * pageSize + '';
    let statement = `
      SELECT 
        id,
        name,
        user_id as userId,
        user_name as userName,
        remark,
        app_type as appType,
        is_template as isTemplate,
        is_public as isPublic,
        is_edit as isEdit,
        preview_img as previewImg,
        project_id as projectId,
        updated_at as updatedAt,
        created_at as createdAt
      FROM 
        pages
      WHERE 
        1 = 1
    `;
    if (isTemplate !== '') {
      statement += ` and is_template = ${isTemplate}`;
    }
    if (userId) {
      statement += ` and user_id = ${userId}`;
    }
    statement += ` LIMIT ${offset}, ${pageSize}`;
    const [result] = await connection.execute(statement, []);
    return result;
  }

  // 查询页面模板总条数
  async listPageTemplateCount(keyword) {
    const statement = "SELECT COUNT(`id`) total FROM pages WHERE (name like COALESCE(CONCAT('%',?,'%'), name) OR ? IS NULL) AND is_public = 3;";
    const [result] = await connection.execute(statement, [keyword || null, keyword || null]);
    return result[0];
  }

  // 查询页面模板
  async listPageTemplate(pageNum, pageSize, keyword) {
    const offset = (+pageNum - 1) * pageSize + '';
    const statement = `
    SELECT 
      id,
      name,
      user_id as userId,
      remark,
      app_type as appType,
      is_public as isPublic,
      is_edit as isEdit,
      preview_img as previewImg,
      stg_publish_id as stgPublishId,
      stg_state as stgState,
      project_id as projectId,
      updated_at as updatedAt,
      SUBSTRING_INDEX(user_name, '@', 1) as userName 
    FROM 
      pages 
    WHERE 
      (name like COALESCE(CONCAT('%',?,'%'), name) OR ? IS NULL) 
    AND 
      is_public = 3 
    ORDER BY 
      updated_at DESC LIMIT ?,?;`;
    const [result] = await connection.execute(statement, [keyword || null, keyword || null, offset, pageSize]);
    return result;
  }

  async getPageInfoById(id) {
    const statement = `
    SELECT 
      id,
      name,
      user_id as userId,
      user_name as userName,
      remark,
      app_type as appType,
      is_public as isPublic,
      is_edit as isEdit,
      preview_img as previewImg,
      page_data as pageData,
      stg_publish_id as stgPublishId,
      pre_publish_id as prePublishId,
      prd_publish_id as prdPublishId,
      stg_state as stgState,
      pre_state as preState,
      prd_state as prdState,
      project_id as projectId,
      updated_at as updatedAt,
      SUBSTRING_INDEX(user_name, '@', 1) as userName 
    FROM 
      pages 
    WHERE id = ?;
    `;
    const [result] = await connection.execute(statement, [id]);
    return result;
  }

  async getPageSimpleById(id) {
    const statement =
      'SELECT user_id as userId, app_type as appType, is_public as isPublic, is_edit as isEdit,project_id projectId FROM pages WHERE id = ?;';
    const [result] = await connection.execute(statement, [id]);
    return result;
  }

  async createPage(name, userId, userName, remark = '', pageData = '', projectId = 0, appType) {
    const statement = 'INSERT INTO pages (name, user_id, user_name, app_type, remark, page_data, project_id) VALUES (?, ?, ?, ?, ?, ?, ?);';
    const [result] = await connection.execute(statement, [name, userId, userName, appType || 1, remark, pageData, projectId]);
    return result;
  }

  async deletePage(pageId, userId) {
    const statement = 'DELETE FROM pages WHERE id = ? and user_id = ?;';
    const [result] = await connection.execute(statement, [pageId, userId]);
    return result;
  }

  // 删除项目下所有页面
  async deletePageByProjectId(projectId, userId) {
    const statement = 'DELETE FROM pages WHERE project_id = ? and user_id = ?;';
    const [result] = await connection.execute(statement, [projectId, userId]);
    return result;
  }

  // 解除项目下页面列表归属
  async updatePageForProjectId(projectId) {
    const statement = 'update pages set project_id = null where project_id = ?';
    const [result] = await connection.execute(statement, [projectId]);
    return result;
  }

  //state=> 1: 未保存 2: 已保存 3: 已发布 4: 已回滚
  async updatePageInfo(id, name, remark, pageData, previewImg, projectId, isPublic) {
    let statement = `UPDATE pages SET stg_state=2, pre_state=2, prd_state=2`;
    let sql_params = [];
    if (name) {
      statement += `, name = ?`;
      sql_params.push(name);
    }
    if (remark != null) {
      statement += `, remark = ?`;
      sql_params.push(remark);
    }
    if (previewImg) {
      statement += `, preview_img = ?`;
      sql_params.push(previewImg);
    }
    if (pageData) {
      statement += `, page_data = ?`;
      sql_params.push(pageData);
    }
    if (projectId) {
      statement += `, project_id = ?`;
      sql_params.push(projectId);
    }
    if (isPublic) {
      statement += `, is_public = ?`;
      sql_params.push(isPublic);
    }

    statement += ` WHERE id = ?;`;
    sql_params.push(id);
    const [result] = await connection.execute(statement, sql_params);
    return result;
  }

  //state=> 1: 未保存 2: 已保存 3: 已发布 4: 已回滚
  async updatePageState(lastPublishId, id, env, previewImg) {
    let statement = `UPDATE pages SET ${env}_state=3, ${env}_publish_id = ?`;
    let sql_params = [lastPublishId];
    if (previewImg) {
      statement += `, preview_img = ?`;
      sql_params.push(previewImg);
    }
    statement += ` WHERE id = ?;`;
    sql_params.push(id);
    const [result] = await connection.execute(statement, sql_params);
    return result;
  }

  async updateLastPublishId(pageId, lastPublishId, env) {
    const statement = `UPDATE pages SET ${env}_state=4, ${env}_publish_id = ? WHERE id = ?;`;
    const [result] = await connection.execute(statement, [lastPublishId, pageId]);
    return result;
  }
  // 根据页面模板id查询页面信息
  async getPageByTemplateId(id) {
    const statement = `
    SELECT 
      p.project_id projectId, p.name, p.remark, p.app_type, p.page_data pageData
    FROM 
      pages p 
    LEFT JOIN 
      templates t 
    on 
      p.id = t.union_id 
    WHERE 
      t.id = ?;
    `;
    const [result] = await connection.execute(statement, [id]);
    return result[0];
  }
  // 根据项目模板id查询关联的菜单页面列表
  async getPagesById(id) {
    const statement = `
    SELECT 
      id, name, app_type as appType, page_data pageData, stg_state stgState, remark
    FROM 
      pages
    WHERE id = ?
    `;
    const [result] = await connection.execute(statement, [id]);
    return result[0];
  }
  // 设置模板以后，更新项目标识
  async updatePageTemplate(id, status) {
    const statement = 'UPDATE pages SET is_template = ? WHERE id = ?;';
    const [result] = await connection.execute(statement, [status, id]);
    return result;
  }

  // 注销用户所有页面
  async deleteAllPage(userId, userName) {
    const statement = 'DELETE FROM pages WHERE user_id = ? and user_name = ?;';
    const [result] = await connection.execute(statement, [userId, userName]);
    return result;
  }
}

module.exports = new PagesService();