Anki-Android/.github/workflows/conflict.yaml at de7b6617f9301c29510711eccf2f82c22d5d5781 · thakkardhruvi205/Anki-Android · GitHub

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name: 🛠️ Conflict Scan

on:
  push:
  schedule:
  - cron: "0 * * * *"

jobs:
  scan_conflicts:
    # Do not run the scheduled jobs on forks
    if: (github.event_name == 'schedule' && github.repository == 'ankidroid/Anki-Android') || (github.event_name != 'schedule')
    permissions:
      contents: read
      pull-requests: write
    runs-on: ubuntu-latest

    steps:
      - name: Check for conflicts and label conflict
        uses: actions/github-script@v8
        with:
          script: |
            async function getPullRequestList() {
                return await github.rest.pulls.list({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    state: 'open',
                    sort: 'created',
                    per_page: 100,
                });
            }

            async function getPullRequest(prNumber) {
                return await github.rest.pulls.get({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    pull_number: prNumber,
                });
            }

            async function addLabel(labels, issue_number) {
                await github.rest.issues.addLabels({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    issue_number: issue_number,
                    labels: labels,
                });
            }

            async function removeLabel(labels, issue_number) {
                await github.rest.issues.removeLabel({
                    owner: context.repo.owner,
                    repo: context.repo.repo,
                    issue_number: issue_number,
                    name: labels,
                });
            }

            async function wait(ms) {
                return new Promise(resolve => setTimeout(resolve, ms));
            }

            const maxIterations = 10;
            async function checkPullRequests() {
                const pullRequestList = await getPullRequestList();

                if (pullRequestList.data !== null && pullRequestList.data.length > 0) {
                    for (let pullRequest of pullRequestList.data) {
                        const prNumber = pullRequest.number;
                        console.log(`Checking PR #${prNumber}`);

                        let pullRequestData;
                        let iterations = 0;
                        do {
                            pullRequestData = await getPullRequest(prNumber);
                            // introduce 1-second delay before the next check
                            await wait(1000);
                            iterations++;

                            // Check for terminal conditions
                            if (pullRequestData.data.mergeable_state !== 'unknown' || iterations >= maxIterations) {
                              break;
                            }
                        } while (pullRequestData.data.mergeable_state === 'unknown');

                        if (pullRequestData.data.mergeable_state === 'dirty') {
                            console.log(`Conflict exists in PR #${prNumber}`);
                            if (pullRequestData.data.labels.find(label => label.name === 'Has Conflicts')) {
                                console.log(`'Has Conflicts' label already exists on PR #${prNumber}`);
                            } else {
                                // Only add label if PR is not already stale to prevent resetting stale timer
                                if (!pullRequestData.data.labels.find(label => label.name === 'Stale')) {
                                    console.log(`Adding 'Has Conflicts' label to PR #${prNumber} (not stale)`);
                                    await addLabel(['Has Conflicts'], prNumber);
                                } else {
                                    console.warn(`PR #${prNumber} is stale, skipping label addition to prevent timer reset`);
                                }
                            }
                        } else if (pullRequestData.data.mergeable_state === 'clean') {
                            // if PR has no conflicts, remove the label
                            if (pullRequestData.data.labels.find(label => label.name === 'Has Conflicts')) {
                                console.log(`Removing 'Has Conflicts' label from PR #${prNumber}`);
                                await removeLabel(['Has Conflicts'], prNumber);
                            }
                        } else if (pullRequestData.data.mergeable_state === 'unstable') {
                            console.log(`PR #${prNumber} is unstable`);
                            const mergeable = pullRequestData.data.mergeable;
                            if (mergeable) {
                                console.log(`PR #${prNumber} is mergeable`);
                                // if PR has no conflicts, remove the label
                                if (pullRequestData.data.labels.find(label => label.name === 'Has Conflicts')) {
                                    console.log(`Removing 'Has Conflicts' label from PR #${prNumber}`);
                                    try {
                                        await removeLabel(['Has Conflicts'], prNumber);
                                    } catch(err) {
                                        if (err.status === 404) {
                                            console.warn("(Has Conflicts) label no longer found when trying to remove it");
                                        } else {
                                            console.log("Unexpected error while removing (Has Conflicts) label: " + err);
                                            throw err;
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }

            checkPullRequests();