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path: root/.github/workflows/docs_assign_review.yaml
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name: Assign a reviewer for documentation

# on:
#   pull_request_target:
#     types: [opened]

jobs:
  assign-docs-reviewer:
    runs-on: ubuntu-latest
    if: contains(github.event.pull_request.body, '* Documentation') && !contains(github.event.pull_request.body, '* New feature')
    steps:
      - name: Assign a random documentation reviewer, excluding the PR author and busy members
        uses: actions/github-script@v8
        with:
          github-token: ${{ secrets.YDBOT_TOKEN }}
          script: |
            const teamSlug = "primary-docs-reviewers";
            const org = "ydb-platform";
            
            // Get team members
            const teamMembers = await github.paginate("GET /orgs/{org}/teams/{team_slug}/members", {
              org,
              team_slug: teamSlug
            });
            if (teamMembers.length === 0) {
              core.setFailed("No team members found in the team.");
            }
            
            // Get the PR author
            const prAuthor = context.payload.pull_request.user.login;
            
            // Function to check if a user is busy:
            // It checks for "busy" in their status message OR if they have limitedAvailability set (checkbox).
            async function isBusy(login) {
              const query = `
                query($login: String!) {
                  user(login: $login) {
                    status {
                      message
                      indicatesLimitedAvailability
                    }
                  }
                }
              `;
              try {
                const result = await github.graphql(query, { login });
                const status = result.user.status;
                if (!status) return false;
                // Consider user busy if limitedAvailability is true or message contains "busy"
                return status.indicatesLimitedAvailability === true ||
                       (status.message && status.message.toLowerCase().includes("busy"));
              } catch (error) {
                console.log(`Error checking status for ${login}: ${error}`);
                return false; // On error, assume not busy
              }
            }
            
            // Filter out the PR author and busy members
            const availableMembers = [];
            for (const member of teamMembers) {
              if (member.login === prAuthor) {
                console.log(`Skipping the author ${member.login}.`);
                continue;
              }
              if (await isBusy(member.login)) {
                console.log(`Skipping ${member.login} as they appear busy.`);
                continue;
              }
              availableMembers.push(member);
            }
            
            if (availableMembers.length === 0) {
              core.setFailed("No available team members after excluding PR author and busy members.");
            }
            
            // Pick a random available member
            const randomIndex = Math.floor(Math.random() * availableMembers.length);
            const randomMember = availableMembers[randomIndex].login;
            
            // Get the PR number from the event context
            const prNumber = context.payload.pull_request.number;
            // Assign the PR to the selected team member
            await github.rest.issues.addAssignees({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prNumber,
              assignees: [randomMember]
            });
            console.log(`Assigned PR #${prNumber} to ${randomMember}`);