servo/.github/workflows/try.yml

name: Try

on:
  pull_request_target:
    types: [labeled]

jobs:
  parse-comment:
    name: Trigger Try
    runs-on: ubuntu-latest
    concurrency:
      group: try-${{ github.event.number }}
    outputs:
      configuration: ${{ steps.configuration.outputs.result }}
    steps:
      - uses: actions/github-script@v6
        id: configuration
        with:
          script: |
            function makeComment(body) {
                console.log(body);
                github.rest.issues.createComment({
                  issue_number: context.issue.number,
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  body
                })
            }

            function combineWPTLayoutOptions(layout, newLayout) {
                let has2013 = layout == "2013" || layout == "all";
                let has2020 = layout == "2020" || layout == "all";
                let adding2013 = newLayout == "2013";
                let adding2020 = newLayout == "2020";

                if ((adding2020 && has2020) || (adding2013 && has2013)) {
                  return layout;
                }
                if (adding2020) {
                  return has2013 ? "all" : "2020";
                }
                if (adding2013) {
                  return has2020 ? "all" : "2013";
                }
                return layout;
            }

            function addPlatformToConfiguration(platform, configuration) {
              if (!configuration.platforms.includes(platform)) {
                configuration.platforms.push(platform);
              }
            }

            function updateConfigurationFromString(tryString, configuration) {
                if (tryString.includes("full")) {
                  configuration.platforms = ["linux", "macos", "windows"];
                  configuration.unit_tests = true;
                  configuration.layout = "all";
                  return configuration;
                }

                if (tryString.includes("linux")) {
                  addPlatformToConfiguration("linux", configuration);
                  configuration.unit_tests = true;
                } else if (tryString.includes("macos")) {
                  addPlatformToConfiguration("macos", configuration);
                  configuration.unit_tests = true;
                } else if (tryString.includes("win")) {
                  addPlatformToConfiguration("windows", configuration);
                  configuration.unit_tests = true;
                }

                if (tryString.includes("wpt")) {
                  addPlatformToConfiguration("linux", configuration);
                  if (tryString.includes("2020")) {
                    configuration.layout = combineWPTLayoutOptions(configuration.layout, "2020");
                  } else {
                    configuration.layout = combineWPTLayoutOptions(configuration.layout, "2013");
                  }
                }
            }

            let configuration = {
              platforms: [],
              layout: "none",
              unit_tests: false,
            };

            let try_labels = [];
            for (const label of context.payload.pull_request.labels) {
              if (!label.name.startsWith("T-")) {
                continue;
              }

              // Try to remove the label. If that fails, it's likely that another
              // workflow has already processed it or a user has removed it.
              try {
                await github.rest.issues.removeLabel({
                  owner: context.repo.owner,
                  repo: context.repo.repo,
                  issue_number: context.issue.number,
                  name: label.name,
                });
              } catch (exception) {
                console.log("Assuming '" + label.name + "' is already removed: " + exception);
                continue;
              }

              console.log("Found label: " + label.name);
              updateConfigurationFromString(label.name, configuration);
            }

            console.log(JSON.stringify(configuration));

            if (configuration.platforms.length == 0) {
                return { platforms: [] };
            }

            let username = context.payload.sender.login;
            let result = await github.rest.repos.getCollaboratorPermissionLevel({
              owner: context.repo.owner,
              repo: context.repo.repo,
              username
            });
            if (!result.data.user.permissions.push) {
              makeComment('🔒 User @' + username + ' does not have permission to trigger try jobs.');
              return { platforms: [] };
            }

            const url = context.serverUrl +
              "/" + context.repo.owner +
              "/" + context.repo.repo +
              "/actions/runs/" + context.runId;
            const formattedURL = "[#" + context.runId + "](" + url + ")";
            let platformsString = configuration.platforms.toString();
            makeComment("🔨 Triggering try run (" + formattedURL + ") with platforms=" +
                        platformsString + " and layout=" + configuration.layout);
            return configuration;

  run-try:
    name: Run Try
    needs: ["parse-comment"]
    if: ${{ fromJson(needs.parse-comment.outputs.configuration).platforms[0] != null }}
    uses: ./.github/workflows/main.yml
    with:
      configuration: ${{ needs.parse-comment.outputs.configuration }}

  results:
    name: Results
    needs: ["parse-comment", "run-try"]
    runs-on: ubuntu-latest
    if: ${{ always() && fromJson(needs.parse-comment.outputs.configuration).platforms[0] != null }}
    steps:
      - name: Success
        if: ${{ !contains(needs.*.result, 'failure') && !contains(needs.*.result, 'cancelled') }}
        uses: actions/github-script@v6
        with:
          script: |
              const url = context.serverUrl +
                "/" + context.repo.owner +
                "/" + context.repo.repo +
                "/actions/runs/" + context.runId;
              const formattedURL = "[#" + context.runId + "](" + url + ")";
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: "✨ Try run (" + formattedURL + ") " + "succeeded.",
              });
      - name: Failure
        if: ${{ contains(needs.*.result, 'failure') }}
        uses: actions/github-script@v6
        with:
          script: |
              const url = context.serverUrl +
                "/" + context.repo.owner +
                "/" + context.repo.repo +
                "/actions/runs/" + context.runId;
              const formattedURL = "[#" + context.runId + "](" + url + ")";
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: "⚠️ Try run (" + formattedURL + ") " + "failed.",
              });