'use strict';
const { CrudService } = require('naf-framework-mongoose-free/lib/service');
const template = require('../public/table-template');
const TSTemplate = require('../public/ts-template');
const _ = require('lodash');
const { ObjectId } = require('mongoose').Types;
class TableService extends CrudService {
  constructor(ctx) {
    super(ctx, 'table');
    this.model = this.ctx.model.Table;
    this.dirModel = this.ctx.model.Dir;
  }
  async query(query) {
    const project = _.get(query, 'project');
    let dirs = [];
    if (project) {
      dirs = await this.dirModel.find({ project }, { name: 1, super: 1, project: 1, remark: 1, type: 'dir' }).lean();
    }
    const datas = await this.model.find(query, { name: 1, name_zh: 1, project: 1, dir: 1, type: 'table' }).lean();
    const newData = this.compareList(dirs, datas);
    return newData;
  }
  /**
   * 组合显示列表
   * @param {Array} dirs 文件夹
   * @param {Array} tables 表数据
   */
  compareList(dirs, tables) {
    const result = [];
    const noDirTables = tables.filter((f) => !f.dir);
    const firstLevelDir = dirs.filter((f) => !f.super);
    const inDirDirs = dirs.filter((f) => f.super);
    let newDir = this.makeDir(firstLevelDir, inDirDirs);
    this.compareTablesForDir(newDir, tables);
    result.push(...newDir, ...noDirTables);
    return result;
  }
  /**
   * 整理文件夹数据
   * @param {Array} thisLevel 当前层级文件夹
   * @param {Array} others 其他所属文件夹
   */
  makeDir(thisLevel, others) {
    for (const tl of thisLevel) {
      const _id = tl._id;
      let children = others.filter((f) => ObjectId(_id).equals(f.super));
      if (children.length <= 0) continue;
      const newOthers = others.filter((f) => children.find((cf) => !ObjectId(cf._id).equals(f._id)));
      children = this.makeDir(children, newOthers);
      tl.children = children;
    }
    return thisLevel;
  }

  /**
   * 组合文件夹和表
   * @param {Array} dirs 文件夹
   * @param {Array} tables 表数据
   */
  compareTablesForDir(dirs, tables) {
    for (const dir of dirs) {
      const { _id, children = [] } = dir;
      const dts = tables.filter((f) => ObjectId(f.dir).equals(_id));
      if (children.length <= 0) {
        children.push(...dts);
        dir.children = children;
        continue;
      } else {
        dir.children.push(...dts);
      }
      const othersTables = tables.filter((f) => !ObjectId(f.dir).equals(_id));
      dir.children = this.compareTablesForDir(children, othersTables);
    }
    return dirs;
  }

  async toExport({ ids }) {
    const res = await this.model.find({ _id: { $in: ids } });
    const data = {};
    for (const i of res) {
      const d = template(i);
      data[i.name_zh ? i.name_zh : i.name] = d;
    }
    return data;
  }
  /**
   * 整理文件夹路径数组(一维)
   * @param {Array} dirs 递归文件夹数据
   * @param {String} prefix 前缀
   */
  getDirPath(dirs, prefix = '', idPath = []) {
    const list = [];
    for (const dir of dirs) {
      const { children = [], name, _id } = dir;
      let path = `${prefix}/${name}`;
      let idp = [...idPath, ObjectId(_id).toString()];
      let obj = { path, idPath: idp };
      list.push(obj);
      if (children.length > 0) {
        let ml = this.getDirPath(children, path, idp);
        list.push(...ml);
      }
    }
    return list;
  }

  async toExportTS({ ids }) {
    const res = await this.model.find({ _id: { $in: ids } }).lean();
    const project = res.find((f) => f.project && f.dir);
    let dirs = [];
    let dirPaths = [];
    if (project) {
      dirs = await this.dirModel.find({ project: project.project }).lean();
      const firstLevelDir = dirs.filter((f) => !f.super);
      const inDirDirs = dirs.filter((f) => f.super);
      let newDir = this.makeDir(firstLevelDir, inDirDirs);
      dirPaths = this.getDirPath(newDir);
    }
    const data = {};
    for (const i of res) {
      const { dir, name } = i;
      if (dir) {
        const dirObj = dirPaths.find((f) => _.last(f.idPath) === dir);
        if (dirObj) {
          let str = '../';
          const levelNumber = dirObj.idPath.length || 0;
          for (let i = 0; i < levelNumber; i++) {
            str = `${str}../`;
          }
          i.getPath = (type) => `${str}${type}${dirObj.path}/${_.lowerFirst(name)}.${type}`;
        }
      } else i.getPath = (type) => `../${type}/${_.lowerFirst(name)}.${type}`;
        const d = TSTemplate(i);
        data[i.name_zh ? i.name_zh : i.name] = d;
    }
    return data;
  }
}

module.exports = TableService;