'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

const VERSION = "2.13.3";

/**
 * Some “list” response that can be paginated have a different response structure
 *
 * They have a `total_count` key in the response (search also has `incomplete_results`,
 * /installation/repositories also has `repository_selection`), as well as a key with
 * the list of the items which name varies from endpoint to endpoint.
 *
 * Octokit normalizes these responses so that paginated results are always returned following
 * the same structure. One challenge is that if the list response has only one page, no Link
 * header is provided, so this header alone is not sufficient to check wether a response is
 * paginated or not.
 *
 * We check if a "total_count" key is present in the response data, but also make sure that
 * a "url" property is not, as the "Get the combined status for a specific ref" endpoint would
 * otherwise match: https://developer.github.com/v3/repos/statuses/#get-the-combined-status-for-a-specific-ref
 */
function normalizePaginatedListResponse(response) {
  const responseNeedsNormalization = "total_count" in response.data && !("url" in response.data);
  if (!responseNeedsNormalization) return response; // keep the additional properties intact as there is currently no other way
  // to retrieve the same information.

  const incompleteResults = response.data.incomplete_results;
  const repositorySelection = response.data.repository_selection;
  const totalCount = response.data.total_count;
  delete response.data.incomplete_results;
  delete response.data.repository_selection;
  delete response.data.total_count;
  const namespaceKey = Object.keys(response.data)[0];
  const data = response.data[namespaceKey];
  response.data = data;

  if (typeof incompleteResults !== "undefined") {
    response.data.incomplete_results = incompleteResults;
  }

  if (typeof repositorySelection !== "undefined") {
    response.data.repository_selection = repositorySelection;
  }

  response.data.total_count = totalCount;
  return response;
}

function iterator(octokit, route, parameters) {
  const options = typeof route === "function" ? route.endpoint(parameters) : octokit.request.endpoint(route, parameters);
  const requestMethod = typeof route === "function" ? route : octokit.request;
  const method = options.method;
  const headers = options.headers;
  let url = options.url;
  return {
    [Symbol.asyncIterator]: () => ({
      async next() {
        if (!url) return {
          done: true
        };
        const response = await requestMethod({
          method,
          url,
          headers
        });
        const normalizedResponse = normalizePaginatedListResponse(response); // `response.headers.link` format:
        // '<https://api.github.com/users/aseemk/followers?page=2>; rel="next", <https://api.github.com/users/aseemk/followers?page=2>; rel="last"'
        // sets `url` to undefined if "next" URL is not present or `link` header is not set

        url = ((normalizedResponse.headers.link || "").match(/<([^>]+)>;\s*rel="next"/) || [])[1];
        return {
          value: normalizedResponse
        };
      }

    })
  };
}

function paginate(octokit, route, parameters, mapFn) {
  if (typeof parameters === "function") {
    mapFn = parameters;
    parameters = undefined;
  }

  return gather(octokit, [], iterator(octokit, route, parameters)[Symbol.asyncIterator](), mapFn);
}

function gather(octokit, results, iterator, mapFn) {
  return iterator.next().then(result => {
    if (result.done) {
      return results;
    }

    let earlyExit = false;

    function done() {
      earlyExit = true;
    }

    results = results.concat(mapFn ? mapFn(result.value, done) : result.value.data);

    if (earlyExit) {
      return results;
    }

    return gather(octokit, results, iterator, mapFn);
  });
}

const composePaginateRest = Object.assign(paginate, {
  iterator
});

const paginatingEndpoints = ["GET /app/installations", "GET /applications/grants", "GET /authorizations", "GET /enterprises/{enterprise}/actions/permissions/organizations", "GET /enterprises/{enterprise}/actions/runner-groups", "GET /enterprises/{enterprise}/actions/runner-groups/{runner_group_id}/organizations", "GET /enterprises/{enterprise}/actions/runner-groups/{runner_group_id}/runners", "GET /enterprises/{enterprise}/actions/runners", "GET /enterprises/{enterprise}/actions/runners/downloads", "GET /events", "GET /gists", "GET /gists/public", "GET /gists/starred", "GET /gists/{gist_id}/comments", "GET /gists/{gist_id}/commits", "GET /gists/{gist_id}/forks", "GET /installation/repositories", "GET /issues", "GET /marketplace_listing/plans", "GET /marketplace_listing/plans/{plan_id}/accounts", "GET /marketplace_listing/stubbed/plans", "GET /marketplace_listing/stubbed/plans/{plan_id}/accounts", "GET /networks/{owner}/{repo}/events", "GET /notifications", "GET /organizations", "GET /orgs/{org}/actions/permissions/repositories", "GET /orgs/{org}/actions/runner-groups", "GET /orgs/{org}/actions/runner-groups/{runner_group_id}/repositories", "GET /orgs/{org}/actions/runner-groups/{runner_group_id}/runners", "GET /orgs/{org}/actions/runners", "GET /orgs/{org}/actions/runners/downloads", "GET /orgs/{org}/actions/secrets", "GET /orgs/{org}/actions/secrets/{secret_name}/repositories", "GET /orgs/{org}/blocks", "GET /orgs/{org}/credential-authorizations", "GET /orgs/{org}/events", "GET /orgs/{org}/failed_invitations", "GET /orgs/{org}/hooks", "GET /orgs/{org}/installations", "GET /orgs/{org}/invitations", "GET /orgs/{org}/invitations/{invitation_id}/teams", "GET /orgs/{org}/issues", "GET /orgs/{org}/members", "GET /orgs/{org}/migrations", "GET /orgs/{org}/migrations/{migration_id}/repositories", "GET /orgs/{org}/outside_collaborators", "GET /orgs/{org}/projects", "GET /orgs/{org}/public_members", "GET /orgs/{org}/repos", "GET /orgs/{org}/team-sync/groups", "GET /orgs/{org}/teams", "GET /orgs/{org}/teams/{team_slug}/discussions", "GET /orgs/{org}/teams/{team_slug}/discussions/{discussion_number}/comments", "GET /orgs/{org}/teams/{team_slug}/discussions/{discussion_number}/comments/{comment_number}/reactions", "GET /orgs/{org}/teams/{team_slug}/discussions/{discussion_number}/reactions", "GET /orgs/{org}/teams/{team_slug}/invitations", "GET /orgs/{org}/teams/{team_slug}/members", "GET /orgs/{org}/teams/{team_slug}/projects", "GET /orgs/{org}/teams/{team_slug}/repos", "GET /orgs/{org}/teams/{team_slug}/team-sync/group-mappings", "GET /orgs/{org}/teams/{team_slug}/teams", "GET /projects/columns/{column_id}/cards", "GET /projects/{project_id}/collaborators", "GET /projects/{project_id}/columns", "GET /repos/{owner}/{repo}/actions/artifacts", "GET /repos/{owner}/{repo}/actions/runners", "GET /repos/{owner}/{repo}/actions/runners/downloads", "GET /repos/{owner}/{repo}/actions/runs", "GET /repos/{owner}/{repo}/actions/runs/{run_id}/artifacts", "GET /repos/{owner}/{repo}/actions/runs/{run_id}/jobs", "GET /repos/{owner}/{repo}/actions/secrets", "GET /repos/{owner}/{repo}/actions/workflows", "GET /repos/{owner}/{repo}/actions/workflows/{workflow_id}/runs", "GET /repos/{owner}/{repo}/assignees", "GET /repos/{owner}/{repo}/branches", "GET /repos/{owner}/{repo}/check-runs/{check_run_id}/annotations", "GET /repos/{owner}/{repo}/check-suites/{check_suite_id}/check-runs", "GET /repos/{owner}/{repo}/code-scanning/alerts", "GET /repos/{owner}/{repo}/code-scanning/alerts/{alert_number}/instances", "GET /repos/{owner}/{repo}/code-scanning/analyses", "GET /repos/{owner}/{repo}/collaborators", "GET /repos/{owner}/{repo}/comments", "GET /repos/{owner}/{repo}/comments/{comment_id}/reactions", "GET /repos/{owner}/{repo}/commits", "GET /repos/{owner}/{repo}/commits/{commit_sha}/branches-where-head", "GET /repos/{owner}/{repo}/commits/{commit_sha}/comments", "GET /repos/{owner}/{repo}/commits/{commit_sha}/pulls", "GET /repos/{owner}/{repo}/commits/{ref}/check-runs", "GET /repos/{owner}/{repo}/commits/{ref}/check-suites", "GET /repos/{owner}/{repo}/commits/{ref}/statuses", "GET /repos/{owner}/{repo}/contributors", "GET /repos/{owner}/{repo}/deployments", "GET /repos/{owner}/{repo}/deployments/{deployment_id}/statuses", "GET /repos/{owner}/{repo}/events", "GET /repos/{owner}/{repo}/forks", "GET /repos/{owner}/{repo}/git/matching-refs/{ref}", "GET /repos/{owner}/{repo}/hooks", "GET /repos/{owner}/{repo}/invitations", "GET /repos/{owner}/{repo}/issues", "GET /repos/{owner}/{repo}/issues/comments", "GET /repos/{owner}/{repo}/issues/comments/{comment_id}/reactions", "GET /repos/{owner}/{repo}/issues/events", "GET /repos/{owner}/{repo}/issues/{issue_number}/comments", "GET /repos/{owner}/{repo}/issues/{issue_number}/events", "GET /repos/{owner}/{repo}/issues/{issue_number}/labels", "GET /repos/{owner}/{repo}/issues/{issue_number}/reactions", "GET /repos/{owner}/{repo}/issues/{issue_number}/timeline", "GET /repos/{owner}/{repo}/keys", "GET /repos/{owner}/{repo}/labels", "GET /repos/{owner}/{repo}/milestones", "GET /repos/{owner}/{repo}/milestones/{milestone_number}/labels", "GET /repos/{owner}/{repo}/notifications", "GET /repos/{owner}/{repo}/pages/builds", "GET /repos/{owner}/{repo}/projects", "GET /repos/{owner}/{repo}/pulls", "GET /repos/{owner}/{repo}/pulls/comments", "GET /repos/{owner}/{repo}/pulls/comments/{comment_id}/reactions", "GET /repos/{owner}/{repo}/pulls/{pull_number}/comments", "GET /repos/{owner}/{repo}/pulls/{pull_number}/commits", "GET /repos/{owner}/{repo}/pulls/{pull_number}/files", "GET /repos/{owner}/{repo}/pulls/{pull_number}/requested_reviewers", "GET /repos/{owner}/{repo}/pulls/{pull_number}/reviews", "GET /repos/{owner}/{repo}/pulls/{pull_number}/reviews/{review_id}/comments", "GET /repos/{owner}/{repo}/releases", "GET /repos/{owner}/{repo}/releases/{release_id}/assets", "GET /repos/{owner}/{repo}/secret-scanning/alerts", "GET /repos/{owner}/{repo}/stargazers", "GET /repos/{owner}/{repo}/subscribers", "GET /repos/{owner}/{repo}/tags", "GET /repos/{owner}/{repo}/teams", "GET /repositories", "GET /repositories/{repository_id}/environments/{environment_name}/secrets", "GET /scim/v2/enterprises/{enterprise}/Groups", "GET /scim/v2/enterprises/{enterprise}/Users", "GET /scim/v2/organizations/{org}/Users", "GET /search/code", "GET /search/commits", "GET /search/issues", "GET /search/labels", "GET /search/repositories", "GET /search/topics", "GET /search/users", "GET /teams/{team_id}/discussions", "GET /teams/{team_id}/discussions/{discussion_number}/comments", "GET /teams/{team_id}/discussions/{discussion_number}/comments/{comment_number}/reactions", "GET /teams/{team_id}/discussions/{discussion_number}/reactions", "GET /teams/{team_id}/invitations", "GET /teams/{team_id}/members", "GET /teams/{team_id}/projects", "GET /teams/{team_id}/repos", "GET /teams/{team_id}/team-sync/group-mappings", "GET /teams/{team_id}/teams", "GET /user/blocks", "GET /user/emails", "GET /user/followers", "GET /user/following", "GET /user/gpg_keys", "GET /user/installations", "GET /user/installations/{installation_id}/repositories", "GET /user/issues", "GET /user/keys", "GET /user/marketplace_purchases", "GET /user/marketplace_purchases/stubbed", "GET /user/memberships/orgs", "GET /user/migrations", "GET /user/migrations/{migration_id}/repositories", "GET /user/orgs", "GET /user/public_emails", "GET /user/repos", "GET /user/repository_invitations", "GET /user/starred", "GET /user/subscriptions", "GET /user/teams", "GET /users", "GET /users/{username}/events", "GET /users/{username}/events/orgs/{org}", "GET /users/{username}/events/public", "GET /users/{username}/followers", "GET /users/{username}/following", "GET /users/{username}/gists", "GET /users/{username}/gpg_keys", "GET /users/{username}/keys", "GET /users/{username}/orgs", "GET /users/{username}/projects", "GET /users/{username}/received_events", "GET /users/{username}/received_events/public", "GET /users/{username}/repos", "GET /users/{username}/starred", "GET /users/{username}/subscriptions"];

function isPaginatingEndpoint(arg) {
  if (typeof arg === "string") {
    return paginatingEndpoints.includes(arg);
  } else {
    return false;
  }
}

/**
 * @param octokit Octokit instance
 * @param options Options passed to Octokit constructor
 */

function paginateRest(octokit) {
  return {
    paginate: Object.assign(paginate.bind(null, octokit), {
      iterator: iterator.bind(null, octokit)
    })
  };
}
paginateRest.VERSION = VERSION;

exports.composePaginateRest = composePaginateRest;
exports.isPaginatingEndpoint = isPaginatingEndpoint;
exports.paginateRest = paginateRest;
exports.paginatingEndpoints = paginatingEndpoints;
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