import { Dict } from '../type'
import * as prettier from 'prettier'
import * as vscode from 'vscode'

class Stringifier {
  /**
   * 将字典类型的描述性收集为字符串
   * @param desp 描述信息
   */
  private stringifyDesp(desp: Dict) {
    let str = '{'
    if (typeof desp === 'object') {
      const keys = Object.keys(desp)
      keys.forEach((key) => {
        str += key + ':'
        const value = desp[key]
        if (typeof value === 'object') {
          str += this.stringifyDesp(value) + ','
        } else {
          str += value + ','
        }
      })
    }
    return str + '}'
  }
  /**
   * 将描述信息 stringify 后 格式化 并返回
   * @param desp 描述信息
   * @param field 字段名,如果传入 返回 type filed = { xxx } 否则 返回 { xxx }
   */
  public formatDesp(desp: Dict, field?: string) {
    let text = ''
    if (!field) {
      text = `interface defaults ${this.stringifyDesp(desp)}`
    } else {
      text = `interface ${field} ${this.stringifyDesp(desp)}`
    }
    let res = ''
    try {
      res = prettier.format(text, { semi: false, parser: 'typescript', singleQuote: true }).trim()
    } catch (error) {
      vscode.window.showErrorMessage('prettier.format出现意料之外的错误', error)
    }
    if (field) {
      return res
    }
    return res.replace('interface defaults ', '')
  }
}

export const sf = new Stringifier()