import { ref } from 'vue';
import type { Ref } from 'vue';
import { repoPathRegExp, repoPathSuffix, repoPathMatch, repoNameRegExp, tagNameHyphenRegExp, tagNamePrefixHeadsRegExp, tagNamePrefixRemotesRegExp, tagNameSuffixLockRegExp, tagNameRegExp } from '@/utils/regex';
import { checkRepoName } from '@/api/repo';
import { reqCatch } from '@/utils/catch';
function asyncDebounce(fn:Function, wait:number) { // 异步函数版debounce，直接使用lodash的有问题
  let timerId:any = null;
  return function(this:any, ...params:any[]) {
    return new Promise((resolve, reject) => {
      clearTimeout(timerId);
      timerId = setTimeout(async() => {
        try {
          const res = await fn.apply(this, params);
          resolve(res);
        } catch (err) {
          reject(err);
        }
      }, wait);
    });
  };
}
interface DynamicValidator{
  (validateRules:Record<string, any[]>):{
    expected:number, // 期望值
    validVector:Ref<number> // 当前根据验证情况获取的值
  }
}
// 动态的表单验证，能实时监控表单的验证情况,每个字段规则不能超过32条
export const useDynamicValidator:DynamicValidator = (validateRules, initValue?) => {
  const keyBitMap = new Map();
  const validVector = ref(0);
  // hack：监听校验情况按钮置灰
  const suffix = (rule: any, value: string, callback: Function) => {
    const keySeq = keyBitMap.get(rule.field);
    if (typeof keySeq !== 'undefined') validVector.value |= keySeq;
    return callback();
  };
  const prefix = (rule: any, value: string, callback: Function) => {
    const keySeq = keyBitMap.get(rule.field);
    if (typeof keySeq !== 'undefined') validVector.value &= ~keySeq;
    return callback();
  };
  let index = 0; let expected = 0;
  for (const name in validateRules) {
    const arr = validateRules[name];
    keyBitMap.set(name, 1 << index);
    expected += 1 << index;
    ++index;
    arr.unshift({ validator: prefix });
    arr.push({ validator: suffix });
  }
  !initValue ? validVector.value = expected : '';// 初始化不置灰
  return {
    expected,
    validateRules,
    validVector
  };
};
// 项目名称的校验
export const repoNameValidator = () => [
  { required: true, message: '项目名称不能为空' },
  { pattern: repoNameRegExp, message: '项目名称应当由中文、字母、数字、下划线（_）、点（.）和连字符（-）组成，必须以字母、数字、中文、点（.）或下划线（_）开头，且长度不得超过 100 个字符。' },
  { pattern: repoPathSuffix, message: '项目名称不能以.wiki，.git，.atom结尾' }
];
interface RepoPathParams{
    repoData:any,
    id:string|undefined,
    [propName: string]: any,
}


export const repoNamePathValidator = ({ repoData, id: selfId, repoId }:RepoPathParams) => {
  const { namepath } = repoData;
  const emptyCheck = (rule: object, value: string, callback: Function) =>
    callback(namepath.id && namepath.repoPath ? undefined : new Error('项目路径不能为空'));

  const repoPathValidate = async (rule: object, value: object) => {

    const { repoPath, id } = value;

    if(!repoPathRegExp.test(repoPath)){
      return Promise.reject(new Error('Path的长度必须在1到100个字符之间，只能包含字母（a-z，A-Z）、数字（0-9）、连字符（-）、下划线（_）和点（.），不区分大小写，不能以连字符和（.）开头'));
    }
    if(!repoPathSuffix.test(repoPath)){
      return Promise.reject(new Error('Path不能以.wiki，.git，.atom结尾'));
    }
    if(!repoPathMatch.test(repoPath)){
      return Promise.reject(new Error('Path不能包含如下关键字：codehub，dashboard，users，profile，merge_requests，issues，milestones，settings，wiki，home，tree，chart，blob，issues-create，review，release，tags，branches，commits，compare，newmergefrom，network，memberlist，labels，setting，files'))
    }
    return Promise.resolve('');

  }

  return [
    { required: true, validator: emptyCheck },
    { asyncValidator: asyncDebounce(repoPathValidate, 200) }
  ];
};

// 项目路径的校验
export const repoPathValidator = ({ repoData, id }:RepoPathParams) => {
  const emptyCheck = (rule: object, value: string, callback: Function) =>
    callback(repoData.namespace.id && repoData.repoPath ? undefined : new Error('项目路径不能为空'));
  async function isPathUsed(rule:any, value:string) { // 项目路径是否重复验证
    const { namespace } = repoData;
    const params = {
      name: value,
      namespace_id: namespace.id === id ? null : namespace.id
    };
    const { data } = await reqCatch(checkRepoName, params);
    return (data && data.data.status) ? Promise.resolve('') : Promise.reject('path已被使用，请重新输入!');
  }
  return [
    { required: true, validator: emptyCheck },
    { pattern: repoPathRegExp, message: 'Path的长度必须在1到100个字符之间，只能包含字母（a-z，A-Z）、数字（0-9）、连字符（-）、下划线（_）和点（.），不区分大小写，不能以连字符和（.）开头' },
    { pattern: repoPathSuffix, message: 'Path不能以.wiki，.git，.atom结尾' },
    { pattern: repoPathMatch, message: 'Path不能包含如下关键字：codehub，dashboard，users，profile，merge_requests，issues，milestones，settings，wiki，home，tree，chart，blob，issues-create，review，release，tags，branches，commits，compare，newmergefrom，network，memberlist，labels，setting，files' },
    { asyncValidator: asyncDebounce(isPathUsed, 100) }
  ];
};
// tag名称的校验
export const tagNameValidator = () => [
  { required: true, message: 'tag名称不能为空' },
  { pattern: tagNameHyphenRegExp, message: '格式错误，请勿以"-"开头' },
  { pattern: tagNamePrefixHeadsRegExp, message: '格式错误，请勿以"refs/heads/"开头' },
  { pattern: tagNamePrefixRemotesRegExp, message: '格式错误，请勿以"refs/remotes/"开头' },
  { pattern: tagNameSuffixLockRegExp, message: '格式错误，请勿以"/"或"."或".lock"结尾' },
  { pattern: tagNameRegExp, message: '格式错误，名称由中文、字母、数字_.-和/组成；且/不能连续，最多可以包含 50 个字符' }
];