import { RepoManager, Issue, Repo, ACTOR_TYPE } from '../../types';
import GitHubVendorManager from './vendormgr';
import assert from 'assert';

export default class GitHubRepoManager implements RepoManager {
  vendorMgr: GitHubVendorManager;
  repo: Repo;

  constructor(vendorMgr: GitHubVendorManager, repoPath: string) {
    this.vendorMgr = vendorMgr;

    const mobj = /^([^/\s]+)\/([^/\s]+)$/.exec(repoPath);
    assert(mobj, 'invalid repo path');
    const [, owner, repoName] = mobj;

    this.repo = {
      vendor: this.vendorMgr.vendor,
      owner: {
        type: ACTOR_TYPE.UNKNOWN,
        username: owner,
        vendor: this.vendorMgr.vendor,
      },
      name: repoName,
    };
  }

  public async initialize() {
    const meta = await this.vendorMgr._doRequest(
      `
        query Query($owner: String!, $name: String!) {
          repository(owner: $owner, name: $name) {
            name
            owner {
              login
              __typename
            }
          }
        }
    `,
      {
        owner: this.repo.owner.username,
        name: this.repo.name,
      },
    );
    console.log(meta);
    assert(meta.repository);
    assert(meta.repository.owner);
    this.repo.name = meta.repository.name;
    this.repo.owner.username = meta.repository.owner.login;
    // @ts-ignore graphql-codegen ignores built-in graphql values
    switch (meta.repository.owner.__typename) {
      case 'Organization':
        this.repo.owner.type = ACTOR_TYPE.ORG;
        break;
      case 'User':
        this.repo.owner.type = ACTOR_TYPE.USER;
        break;
    }
    return this;
  }

  public async getIssue(number: string): Promise<Issue> {
    const resp = await this.vendorMgr._doRequest(
      `
        query Query($owner: String!, $name: String!, $number: Int!) {
          repository(owner: $owner, name: $name) {
            issue(number: $number) {
              number
              title
              body
              closed
              closedAt
              labels(first: 0) {
                nodes {
                  name
                  color
                  description
                }
              }
            }
          }
        }
    `,
      {
        owner: this.repo.owner.username,
        name: this.repo.name,
        number: parseInt(number, 10),
      },
    );
    assert(resp.repository, 'no repository');
    assert(resp.repository.issue, 'no issue');
    const { issue } = resp.repository;
    return {
      id: issue.number.toString(),
      content: issue.body,
      title: issue.title,
      repo: this.repo,
    };
  }
}