import axios from "axios";

import type { Source } from "./source.ts";

export interface GitLabSourceOptions {
  timeout?: number;
}

export class GitLabSource implements Source {
  public readonly displayName = "GitLab";

  protected readonly network: string;

  protected readonly timeout: number;

  constructor(network: string, options?: GitLabSourceOptions) {
    this.network = network;
    this.timeout = options?.timeout ?? 30_000;
  }

  public async getPublicKeyJwk(keyId: string): Promise<unknown> {
    const path = `pubkeys/${keyId}.jwk`;
    const url = this.url(path);

    try {
      const response = await axios.get<unknown>(url, {
        timeout: this.timeout,
        transitional: {
          forcedJSONParsing: false, // Prevent Axios from trying to parse the response
        },
      });
      return response.data;
    } catch (error) {
      throw new Error(
        `Error when fetching ${url}: ${error instanceof Error ? error.message : "Unknown error"}`,
        { cause: error },
      );
    }
  }

  public async getTnlJwt(version?: number): Promise<unknown> {
    const path = version
      ? `lists/${this.network}/archive/tnl-${version.toString()}.jwt` // Fetch an archived TNL
      : `lists/${this.network}/tnl.jwt`; // Fetch latest TNL
    const url = this.url(path);

    try {
      const response = await axios.get<unknown>(url, {
        timeout: this.timeout,
        transitional: {
          forcedJSONParsing: false, // Prevent Axios from trying to parse the response
        },
      });
      return response.data;
    } catch (error) {
      throw new Error(
        `Error when fetching ${url}: ${error instanceof Error ? error.message : "Unknown error"}`,
        { cause: error },
      );
    }
  }

  protected url(path: string): string {
    const branch = "main";
    return `https://gitlab.com/api/v4/projects/77640068/repository/files/${encodeURIComponent(path)}/raw?ref=${branch}`;
  }
}