# Labels pull requests by author: 'bot' for bot accounts, 'staff' for
# staff team members, 'guild' for guild members, 'first contribution' for
# first-time external contributors.
name: PR Labeler

on:
  pull_request_target:
    types: [opened]

permissions:
  contents: read

jobs:
  check-authorship-and-label:
    if: github.repository == 'zed-industries/zed'
    runs-on: namespace-profile-2x4-ubuntu-2404
    timeout-minutes: 5
    steps:
      - id: get-app-token
        uses: actions/create-github-app-token@f8d387b68d61c58ab83c6c016672934102569859 # v3.0.0
        with:
          app-id: ${{ secrets.ZED_COMMUNITY_BOT_APP_ID }}
          private-key: ${{ secrets.ZED_COMMUNITY_BOT_PRIVATE_KEY }}
          owner: zed-industries

      - id: apply-authorship-label
        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
        with:
          github-token: ${{ steps.get-app-token.outputs.token }}
          script: |
            const BOT_LABEL = 'bot';
            const STAFF_LABEL = 'staff';
            const GUILD_LABEL = 'guild';
            const FIRST_CONTRIBUTION_LABEL = 'first contribution';
            const STAFF_TEAM_SLUG = 'staff';
            const GUILD_MEMBERS = [
              '11happy',
              'AidanV',
              'AmaanBilwar',
              'MostlyKIGuess',
              'OmChillure',
              'Palanikannan1437',
              'Shivansh-25',
              'SkandaBhat',
              'TwistingTwists',
              'YEDASAVG',
              'Ziqi-Yang',
              'alanpjohn',
              'arjunkomath',
              'austincummings',
              'ayushk-1801',
              'criticic',
              'dongdong867',
              'emamulandalib',
              'eureka928',
              'feitreim',
              'iam-liam',
              'iksuddle',
              'ishaksebsib',
              'lingyaochu',
              'loadingalias',
              'marcocondrache',
              'mchisolm0',
              'nairadithya',
              'nihalxkumar',
              'notJoon',
              'polyesterswing',
              'prayanshchh',
              'razeghi71',
              'sarmadgulzar',
              'seanstrom',
              'th0jensen',
              'tommyming',
              'transitoryangel',
              'virajbhartiya',
            ];

            const pr = context.payload.pull_request;
            const author = pr.user.login;

            if (pr.user.type === 'Bot') {
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: pr.number,
                labels: [BOT_LABEL]
              });
              console.log(`PR #${pr.number} by ${author}: labeled '${BOT_LABEL}' (user type: '${pr.user.type}')`);
              return;
            }

            let isStaff = false;
            try {
              const response = await github.rest.teams.getMembershipForUserInOrg({
                org: 'zed-industries',
                team_slug: STAFF_TEAM_SLUG,
                username: author
              });
              isStaff = response.data.state === 'active';
            } catch (error) {
              if (error.status !== 404) {
                throw error;
              }
            }

            if (isStaff) {
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: pr.number,
                labels: [STAFF_LABEL]
              });
              console.log(`PR #${pr.number} by ${author}: labeled '${STAFF_LABEL}' (staff team member)`);
              return;
            }

            const authorLower = author.toLowerCase();
            const isGuildMember = GUILD_MEMBERS.some(
              (member) => member.toLowerCase() === authorLower
            );
            if (isGuildMember) {
              await github.rest.issues.addLabels({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: pr.number,
                labels: [GUILD_LABEL]
              });
              console.log(`PR #${pr.number} by ${author}: labeled '${GUILD_LABEL}' (guild member)`);
              // No early return: guild members can also get 'first contribution'
            }

            // We use inverted logic here due to a suspected GitHub bug where first-time contributors
            // get 'NONE' instead of 'FIRST_TIME_CONTRIBUTOR' or 'FIRST_TIMER'.
            // https://github.com/orgs/community/discussions/78038
            // This will break if GitHub ever adds new associations.
            const association = pr.author_association;
            const knownAssociations = ['CONTRIBUTOR', 'COLLABORATOR', 'MEMBER', 'OWNER', 'MANNEQUIN'];

            if (knownAssociations.includes(association)) {
              console.log(`PR #${pr.number} by ${author}: not a first-time contributor (association: '${association}')`);
              return;
            }

            await github.rest.issues.addLabels({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: pr.number,
              labels: [FIRST_CONTRIBUTION_LABEL]
            });
            console.log(`PR #${pr.number} by ${author}: labeled '${FIRST_CONTRIBUTION_LABEL}' (association: '${association}')`);