import got from 'got';
import { VendorManager, VENDOR_TYPE, Vendor, Issue, Repo, RepoManager } from '../../types';
import { GHRepository, GHQuery } from './api-types';
import assert from 'assert';
import GitHubRepoManager from './repomgr';

export interface GitHubConfig {
  token: string;
  domain?: string | null;
}

export default class GitHubVendorManager implements VendorManager<GitHubConfig> {
  vendor: Vendor;
  config: GitHubConfig;
  gqlEndpoint: string;

  constructor(config: GitHubConfig) {
    this.vendor = {
      display: 'Microsoft GitHub',
      type: VENDOR_TYPE.GITHUB,
      domain: config.domain || 'github.com',
    };
    this.config = config;
    this.gqlEndpoint = `https://${
      this.vendor.domain === 'github.com'
        ? 'api.github.com'
        : /* github enterprise server */ `${this.vendor.domain}/api`
    }/graphql`;
  }

  public async initialize() {
    return this;
  }

  public async getRepo(path: string) {
    return new GitHubRepoManager(this, path).initialize() as Promise<RepoManager>;
  }

  /** internal and for RepoManager */
  public async _doRequest(query: string, variables: any) {
    return got
      .post(this.gqlEndpoint, {
        body: JSON.stringify({ query, variables }),
        headers: { Authorization: `Bearer ${this.config.token}` },
      })
      .then((res) => JSON.parse(res.body))
      .then((res) => res.data) as Promise<GHQuery>;
  }
}