import { GITHUB_API_URL, USE_GITEA_API } from "./config";

/**
 * Resolves the Gitea run ID from the run number.
 * In Gitea, the environment variable GITHUB_RUN_ID is not available,
 * so we need to fetch it via the API using GITEA_RUN_NUMBER.
 *
 * @param token - GitHub/Gitea token for authentication
 * @param owner - Repository owner
 * @param repo - Repository name
 * @returns The resolved run ID, or undefined if not found
 */
export async function resolveGiteaRunId(
  token: string,
  owner: string,
  repo: string,
): Promise<string | undefined> {
  if (!USE_GITEA_API) {
    return undefined;
  }

  const runNumber = process.env.GITEA_RUN_NUMBER;
  if (!runNumber) {
    console.log("GITEA_RUN_NUMBER not set, cannot resolve Gitea run ID");
    return undefined;
  }

  try {
    // Call Gitea API to get action runs
    // GET /api/v1/repos/{owner}/{repo}/actions/runs
    const url = `${GITHUB_API_URL}/repos/${owner}/${repo}/actions/runs`;
    const response = await fetch(url, {
      headers: {
        Authorization: `token ${token}`,
        Accept: "application/json",
      },
    });

    if (!response.ok) {
      console.error(
        `Failed to fetch Gitea action runs: ${response.status} ${response.statusText}`,
      );
      return undefined;
    }

    const data = (await response.json()) as {
      workflow_runs?: Array<{ id: number; run_number: number }>;
    };

    // Find the run with matching run_number
    const runs = data.workflow_runs || [];
    const targetRunNumber = parseInt(runNumber, 10);
    const matchingRun = runs.find((run) => run.run_number === targetRunNumber);

    if (matchingRun) {
      console.log(
        `Resolved Gitea run ID: ${matchingRun.id} from run number: ${runNumber}`,
      );
      return String(matchingRun.id);
    }

    console.log(
      `Could not find Gitea run with run_number: ${runNumber} in ${runs.length} runs`,
    );
    return undefined;
  } catch (error) {
    console.error("Error resolving Gitea run ID:", error);
    return undefined;
  }
}

/**
 * Sets up the GITHUB_RUN_ID environment variable for Gitea.
 * This should be called early in the action execution.
 */
export async function setupGiteaRunId(
  token: string,
  owner: string,
  repo: string,
): Promise<void> {
  // Only proceed if we're in Gitea and don't already have a run ID
  if (!USE_GITEA_API || process.env.GITHUB_RUN_ID) {
    return;
  }

  const runId = await resolveGiteaRunId(token, owner, repo);
  if (runId) {
    process.env.GITHUB_RUN_ID = runId;
    console.log(`Set GITHUB_RUN_ID to ${runId} from Gitea API`);
  }
}