import { config } from '@/utils/config'
import { HttpsProxyAgent } from 'https-proxy-agent'
import fetch, { Response } from 'node-fetch'

export class GithubClient {
  key: string
  client: {
    request: (url: string, options?: any) => Promise<Response>
  }

  commonHeaders: {
    'X-GitHub-Api-Version': string
    Accept: string
    Authorization: string | undefined
  }

  constructor (key: string) {
    this.key = key
    const proxy = config().proxy
    this.client = {
      request: (url, options = {}) => {
        const defaultOptions = proxy
          ? { agent: new HttpsProxyAgent(proxy) }
          : {}
        const mergedOptions = {
          ...defaultOptions,
          ...options
        }

        return fetch(url, mergedOptions)
      }
    }
    this.commonHeaders = {
      'X-GitHub-Api-Version': '2022-11-28',
      Accept: 'application/vnd.github+json',
      Authorization: undefined
    }
    if (this.key) {
      this.commonHeaders.Authorization = `Bearer ${this.key}`
    }
  }

  /**
   * 获取仓库详情
   * @param owner
   * @param repo
   * @returns {Promise<Object>}
   */
  async getRepository (owner: string, repo: string) {
    const res = await this.client.request(`https://api.github.com/repos/${owner}/${repo}`, {
      headers: this.commonHeaders
    })
    return await this.toJson(res)
  }

  /**
   * 获取仓库commits信息
   * @see https://docs.github.com/en/rest/commits/commits?apiVersion=2022-11-28
   * @param owner
   * @param repo
   * @param options 可选参数：since, until, per_page, page, sha等
   * @returns {Promise<Object[]>}
   */
  async getCommits (options = {}, owner: string, repo: string) {
    const res = await this.client.request(`https://api.github.com/repos/${owner}/${repo}/commits${this.query(options)}`, {
      headers: this.commonHeaders
    })
    return await this.toJson(res)
  }

  /**
   * 获取仓库某个commit信息
   * @see https://docs.github.com/en/rest/commits/commits?apiVersion=2022-11-28#get-a-commit
   * @param owner
   * @param repo
   * @param sha commit sha
   * @returns {Promise<Object>}
   */
  async getCommitBySha (sha: string, owner: string, repo: string) {
    if (!sha) {
      throw new Error('sha cannot be empty')
    }
    const res = await this.client.request(`https://api.github.com/repos/${owner}/${repo}/commits/${sha}`, {
      headers: this.commonHeaders
    })
    return await this.toJson(res)
  }

  /**
   * 获取仓库releases信息
   * @see https://docs.github.com/en/rest/releases/releases?apiVersion=2022-11-28
   * @param owner
   * @param repo
   * @param options 可选参数：per_page, page
   * @returns {Promise<Object[]>}
   */
  async getReleases (options = {}, owner: string, repo: string) {
    const res = await this.client.request(`https://api.github.com/repos/${owner}/${repo}/releases${this.query(options)}`, {
      headers: this.commonHeaders
    })
    return await this.toJson(res)
  }

  /**
   * 获取仓库action artifacts信息
   * @see https://docs.github.com/en/rest/actions/artifacts?apiVersion=2022-11-28
   * @param owner
   * @param repo
   * @param options 可选参数：per_page, page, name
   * @returns {Promise<Object[]>}
   */
  async getActionsArtifacts (options = {}, owner: string, repo: string) {
    const res = await this.client.request(`https://api.github.com/repos/${owner}/${repo}/actions/artifacts${this.query(options)}`, {
      headers: this.commonHeaders
    })
    return await this.toJson(res)
  }

  /**
   * @typedef {{
   *   url: string,
   *   repository_url: string,
   *   labels_url: string,
   *   comments_url: string,
   *   events_url: string,
   *   html_url: string,
   *   id: number,
   *   node_id: string,
   *   number: number,
   *   title: string,
   *   user: {
   *     login: string,
   *     id: number,
   *     node_id: string,
   *     avatar_url: string,
   *     gravatar_id: string,
   *     url: string,
   *     html_url: string,
   *     followers_url: string,
   *     following_url: string,
   *     gists_url: string,
   *     starred_url: string,
   *     subscriptions_url: string,
   *     organizations_url: string,
   *     repos_url: string,
   *     events_url: string,
   *     received_events_url: string,
   *     type: string,
   *     site_admin: boolean
   *   },
   *   labels: Array<{
   *     id: number,
   *     node_id: string,
   *     url: string,
   *     name: string,
   *     color: string,
   *     default: boolean,
   *     description: string
   *   }>,
   *   state: string,
   *   locked: boolean,
   *   assignee: string,
   *   assignees: Array<string>,
   *   milestone: string,
   *   comments: number,
   *   created_at: string,
   *   updated_at: string,
   *   closed_at: string,
   *   author_association: string,
   *   active_lock_reason: string,
   *   body: string,
   *   performed_via_github_app: string,
   *   timeline_url: string,
   *   state_reason: string,
   *   reactions: Reaction,
   *   }} Issues
   */

  /**
   * @typedef {{
   *     url: string,
   *     total_count: number,
   *     '+1': number,
   *     '-1': number,
   *     laugh: number,
   *     hooray: number,
   *     confused: number,
   *     heart: number,
   *     rocket: number,
   *     eyes: number
   *   }} Reaction
   */

  /**
   * 获取仓库的issues
   * @param {{
   *   state?: 'open' | 'closed' | 'all',
   *   sort?: 'created' | 'updated' | 'comments',
   * }} options
   * @param {string} owner
   * @param {string} repo
   * @return {Promise<Issues[]>}
   */
  async getIssues (options = {}, owner: string, repo: string) {
    const res = await this.client.request(`https://api.github.com/repos/${owner}/${repo}/issues${this.query(options)}`, {
      headers: this.commonHeaders
    })
    return await this.toJson(res)
  }

  // // 20240818214602
  // // https://api.github.com/repos/ZZZure/ZZZ-Plugin/issues/47/timeline
  //
  // [
  //   {
  //     "url": "https://api.github.com/repos/ZZZure/ZZZ-Plugin/issues/comments/2295172725",
  //     "html_url": "https://github.com/ZZZure/ZZZ-Plugin/issues/47#issuecomment-2295172725",
  //     "issue_url": "https://api.github.com/repos/ZZZure/ZZZ-Plugin/issues/47",
  //     "id": 2295172725,
  //     "node_id": "IC_kwDOLzJzr86IzY51",
  //     "user": {
  //       "login": "bietiaop",
  //       "id": 43831609,
  //       "node_id": "MDQ6VXNlcjQzODMxNjA5",
  //       "avatar_url": "https://avatars.githubusercontent.com/u/43831609?v=4",
  //       "gravatar_id": "",
  //       "url": "https://api.github.com/users/bietiaop",
  //       "html_url": "https://github.com/bietiaop",
  //       "followers_url": "https://api.github.com/users/bietiaop/followers",
  //       "following_url": "https://api.github.com/users/bietiaop/following{/other_user}",
  //       "gists_url": "https://api.github.com/users/bietiaop/gists{/gist_id}",
  //       "starred_url": "https://api.github.com/users/bietiaop/starred{/owner}{/repo}",
  //       "subscriptions_url": "https://api.github.com/users/bietiaop/subscriptions",
  //       "organizations_url": "https://api.github.com/users/bietiaop/orgs",
  //       "repos_url": "https://api.github.com/users/bietiaop/repos",
  //       "events_url": "https://api.github.com/users/bietiaop/events{/privacy}",
  //       "received_events_url": "https://api.github.com/users/bietiaop/received_events",
  //       "type": "User",
  //       "site_admin": false
  //     },
  //     "created_at": "2024-08-18T08:16:07Z",
  //     "updated_at": "2024-08-18T08:16:07Z",
  //     "author_association": "CONTRIBUTOR",
  //     "body": "暂时没有",
  //     "reactions": {
  //       "url": "https://api.github.com/repos/ZZZure/ZZZ-Plugin/issues/comments/2295172725/reactions",
  //       "total_count": 0,
  //       "+1": 0,
  //       "-1": 0,
  //       "laugh": 0,
  //       "hooray": 0,
  //       "confused": 0,
  //       "heart": 0,
  //       "rocket": 0,
  //       "eyes": 0
  //     },
  //     "performed_via_github_app": null,
  //     "event": "commented",
  //     "actor": {
  //       "login": "bietiaop",
  //       "id": 43831609,
  //       "node_id": "MDQ6VXNlcjQzODMxNjA5",
  //       "avatar_url": "https://avatars.githubusercontent.com/u/43831609?v=4",
  //       "gravatar_id": "",
  //       "url": "https://api.github.com/users/bietiaop",
  //       "html_url": "https://github.com/bietiaop",
  //       "followers_url": "https://api.github.com/users/bietiaop/followers",
  //       "following_url": "https://api.github.com/users/bietiaop/following{/other_user}",
  //       "gists_url": "https://api.github.com/users/bietiaop/gists{/gist_id}",
  //       "starred_url": "https://api.github.com/users/bietiaop/starred{/owner}{/repo}",
  //       "subscriptions_url": "https://api.github.com/users/bietiaop/subscriptions",
  //       "organizations_url": "https://api.github.com/users/bietiaop/orgs",
  //       "repos_url": "https://api.github.com/users/bietiaop/repos",
  //       "events_url": "https://api.github.com/users/bietiaop/events{/privacy}",
  //       "received_events_url": "https://api.github.com/users/bietiaop/received_events",
  //       "type": "User",
  //       "site_admin": false
  //     }
  //   }
  // ]
  /**
   * @typedef {{
   *   login: string,
   *   id: number,
   *   node_id: string,
   *   avatar_url: string,
   *   gravatar_id: string,
   *   url: string,
   *   html_url: string,
   *   followers_url: string,
   *   following_url: string,
   *   gists_url: string,
   *   starred_url: string,
   *   subscriptions_url: string,
   *   organizations_url: string,
   *   repos_url: string,
   *   events_url: string,
   *   received_events_url: string,
   *   type: string,
   *   site_admin: boolean
   *   }} GithubUser
   */
  /**
   * @typedef {{
   *   url: string,
   *   html_url: string,
   *   issue_url: string,
   *   id: number,
   *   node_id: string,
   *   user: GithubUser,
   *   created_at: string,
   *   updated_at: string,
   *   author_association: string,
   *   body: string,
   *   performed_via_github_app: string,
   *   event: string,
   *   actor: GithubUser,
   *   reactions: Reaction
   *   }} Timeline
   */

  /**
   * 获取issue详情
   * @param {number} issueNumber
   * @param {string} owner
   * @param {string} repo
   * @return {Promise<Timeline[]>}
   */
  async getIssueTimeline (issueNumber: number, owner: string, repo: string) {
    const res = await this.client.request(`https://api.github.com/repos/${owner}/${repo}/issues/${issueNumber}/timeline`, {
      headers: this.commonHeaders
    })
    return await this.toJson(res)
  }

  /**
   * params to query string
   * @param params
   * @param containsQuestionMark 结果前面是否包含?
   * @returns {string}
   */
  query (params: { [x: string]: any }, containsQuestionMark = true) {
    if (!params || typeof params !== 'object') {
      return ''
    }
    let q = ''
    Object.keys(params).forEach(k => {
      if (q) {
        q += '&'
      }
      q += `${k}=${params[k]}`
    })
    if (containsQuestionMark) {
      return q ? `?${q}` : ''
    }
    return q
  }

  /**
   *
   * @param {Response} res
   * @returns {Promise<Object | Object[]>}
   */
  async toJson (res: Response) {
    if (res.status === 200) {
      return await res.json()
    } else if (res.status === 429 || (await res.text())?.includes('limited')) {
      throw new Error('Github API 访问速率超限，您可以配置免费的Github personal access token以将访问速率从60/小时提升至5,000/小时')
    }
  }
}