name: Commit Artifacts for Meta WWW and fbsource

on:
  push:
    branches: [main, meta-www, meta-fbsource]

jobs:
  download_artifacts:
    runs-on: ubuntu-latest
    outputs:
      www_branch_count: ${{ steps.check_branches.outputs.www_branch_count }}
      fbsource_branch_count: ${{ steps.check_branches.outputs.fbsource_branch_count }}
    steps:
      - uses: actions/checkout@v3
      - name: "Check branches"
        id: check_branches
        run: |
          echo "www_branch_count=$(git ls-remote --heads origin "refs/heads/meta-www" | wc -l)" >> "$GITHUB_OUTPUT"
          echo "fbsource_branch_count=$(git ls-remote --heads origin "refs/heads/meta-fbsource" | wc -l)" >> "$GITHUB_OUTPUT"
      - name: Download and unzip artifacts
        uses: actions/github-script@v6
        env:
          CIRCLECI_TOKEN: ${{secrets.CIRCLECI_TOKEN_DIFFTRAIN}}
        with:
          script: |
            const cp = require('child_process');

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

            function execHelper(command, options, streamStdout = false) {
              return new Promise((resolve, reject) => {
                const proc = cp.exec(
                  command,
                  options,
                  (error, stdout) => (error ? reject(error) : resolve(stdout.trim())),
                );
                if (streamStdout) {
                  proc.stdout.pipe(process.stdout);
                }
              });
            }

            let artifactsUrl = null;
            // This is a temporary, dirty hack to avoid needing a GitHub auth token in the circleci
            // workflow to notify this GitHub action. Sorry!
            let iter = 0;
            spinloop: while (iter < 15) {
              const res = await github.rest.repos.listCommitStatusesForRef({
                owner: context.repo.owner,
                repo: context.repo.repo,
                ref: context.sha
              });
              for (const status of res.data) {
                if (/process_artifacts_combined/.test(status.context)) {
                  switch (status.state) {
                    case 'pending': {
                      console.log(`${status.context} is still pending`);
                      break;
                    }
                    case 'failure':
                    case 'error': {
                      throw new Error(`${status.context} has failed or errored`);
                    }
                    case 'success': {
                      // The status does not include a build ID, but we can extract it
                      // from the URL. I couldn't find a better way to do this.
                      const ciBuildId = /\/facebook\/react\/([0-9]+)/.exec(
                        status.target_url,
                      )[1];
                      if (Number.parseInt(ciBuildId, 10) + '' === ciBuildId) {
                        artifactsUrl =
                          `https://circleci.com/api/v1.1/project/github/facebook/react/${ciBuildId}/artifacts`;
                        console.log(`Found artifactsUrl: ${artifactsUrl}`);
                        break spinloop;
                      } else {
                        throw new Error(`${ciBuildId} isn't a number`);
                      }
                      break;
                    }
                    default: {
                      throw new Error(`Unhandled status state: ${status.state}`);
                      break;
                    }
                  }
                }
              }
              iter++;
              console.log("Sleeping for 60s...");
              await sleep(60_000);
            }
            if (artifactsUrl != null) {
              const {CIRCLECI_TOKEN} = process.env;
              const res = await fetch(artifactsUrl, {
                headers: {
                  'Circle-Token': CIRCLECI_TOKEN
                }
              });
              const data = await res.json();
              if (!Array.isArray(data) && data.message != null) {
                throw `CircleCI returned: ${data.message}`;
              }
              for (const artifact of data) {
                if (artifact.path === 'build.tgz') {
                  console.log(`Downloading and unzipping ${artifact.url}`);
                  await execHelper(
                    `curl -L ${artifact.url} -H "Circle-Token: ${CIRCLECI_TOKEN}" | tar -xvz`
                  );
                }
              }
            } else {
              process.exitCode = 1;
            }
      - name: Strip @license from eslint plugin and react-refresh
        run: |
          sed -i -e 's/ @license React*//' \
            build/oss-experimental/eslint-plugin-react-hooks/cjs/eslint-plugin-react-hooks.development.js \
            build/oss-experimental/react-refresh/cjs/react-refresh-babel.development.js
      - name: Move relevant files for React in www into compiled
        run: |
          # Move the facebook-www folder into compiled
          mkdir ./compiled
          mv build/facebook-www ./compiled

          # Move WARNINGS to facebook-www
          mkdir ./compiled/facebook-www/__test_utils__
          mv build/WARNINGS ./compiled/facebook-www/WARNINGS
          mv build/__test_utils__/ReactAllWarnings.js ./compiled/facebook-www/__test_utils__/ReactAllWarnings.js

          # Move eslint-plugin-react-hooks into facebook-www
          mv build/oss-experimental/eslint-plugin-react-hooks/cjs/eslint-plugin-react-hooks.development.js \
            ./compiled/facebook-www/eslint-plugin-react-hooks.js

          # Move unstable_server-external-runtime.js into facebook-www
          mv build/oss-stable/react-dom/unstable_server-external-runtime.js \
            ./compiled/facebook-www/unstable_server-external-runtime.js

          # Move react-refresh-babel.development.js into babel-plugin-react-refresh
          mkdir ./compiled/babel-plugin-react-refresh
          mv build/oss-experimental/react-refresh/cjs/react-refresh-babel.development.js \
            ./compiled/babel-plugin-react-refresh/index.js

          ls -R ./compiled
      - name: Move relevant files for React in fbsource into compiled-rn
        run: |
          BASE_FOLDER='compiled-rn/facebook-fbsource/xplat/js'
          mkdir -p ${BASE_FOLDER}/react-native-github/Libraries/Renderer/
          mkdir -p ${BASE_FOLDER}/RKJSModules/vendor/{scheduler,react,react-is,react-test-renderer}/

          # Move React Native renderer 
          mv build/react-native/implementations/ $BASE_FOLDER/react-native-github/Libraries/Renderer/
          mv build/react-native/shims/ $BASE_FOLDER/react-native-github/Libraries/Renderer/
          mv build/facebook-react-native/scheduler/cjs/ $BASE_FOLDER/RKJSModules/vendor/scheduler/
          mv build/facebook-react-native/react/cjs/ $BASE_FOLDER/RKJSModules/vendor/react/
          mv build/facebook-react-native/react-is/cjs/ $BASE_FOLDER/RKJSModules/vendor/react-is/
          mv build/facebook-react-native/react-test-renderer/cjs/ $BASE_FOLDER/RKJSModules/vendor/react-test-renderer/

          # Delete OSS renderer. OSS renderer is synced through internal script.
          RENDERER_FOLDER=$BASE_FOLDER/react-native-github/Libraries/Renderer/implementations/
          rm $RENDERER_FOLDER/ReactFabric-{dev,prod,profiling}.js
          rm $RENDERER_FOLDER/ReactNativeRenderer-{dev,prod,profiling}.js

          ls -R ./compiled
      - name: Add REVISION file
        run: |
          echo ${{ github.sha }} >> ./compiled/facebook-www/REVISION
          echo ${{ github.sha }} >> ./compiled-rn/facebook-fbsource/xplat/js/react-native-github/Libraries/Renderer/REVISION
      - uses: actions/upload-artifact@v3
        with:
          name: compiled
          path: compiled/
      - uses: actions/upload-artifact@v3
        with:
          name: compiled-rn
          path: compiled-rn/

  commit_www_artifacts:
    needs: download_artifacts
    if: ${{ (github.ref == 'refs/heads/main' && needs.download_artifacts.outputs.www_branch_count == '0') || github.ref == 'refs/heads/meta-www' }}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          ref: builds/facebook-www
      - name: Ensure clean directory
        run: rm -rf compiled
      - uses: actions/download-artifact@v3
        with:
          name: compiled
          path: compiled/
      - run: git status -u
      - name: Check if only the REVISION file has changed
        id: check_should_commit
        run: |
          if git status --porcelain | grep -qv '/REVISION$'; then
            echo "should_commit=true" >> "$GITHUB_OUTPUT"
          else
            echo "should_commit=false" >> "$GITHUB_OUTPUT"
          fi
      - name: Commit changes to branch
        if: steps.check_should_commit.outputs.should_commit == 'true'
        uses: stefanzweifel/git-auto-commit-action@v4
        with:
          commit_message: |
            ${{ github.event.head_commit.message }}

            DiffTrain build for [${{ github.sha }}](https://github.com/facebook/react/commit/${{ github.sha }})
          branch: builds/facebook-www
          commit_user_name: ${{ github.actor }}
          commit_user_email: ${{ github.actor }}@users.noreply.github.com
          create_branch: true

  commit_fbsource_artifacts:
    needs: download_artifacts
    runs-on: ubuntu-latest
    if: ${{ (github.ref == 'refs/heads/main' && needs.download_artifacts.outputs.fbsource_branch_count == '0') || github.ref == 'refs/heads/meta-fbsource' }}
    steps:
      - uses: actions/checkout@v3
        with:
          ref: main
          repository: facebook/react-fbsource-import
          token: ${{secrets.FBSOURCE_SYNC_PUSH_TOKEN}}
      - name: Ensure clean directory
        run: rm -rf compiled-rn
      - uses: actions/download-artifact@v3
        with:
          name: compiled-rn
          path: compiled-rn/
      - run: git status -u
      - name: Check if only the REVISION file has changed
        id: check_should_commit
        run: |
          if git status --porcelain | grep -qv '/REVISION$'; then
            echo "should_commit=true" >> "$GITHUB_OUTPUT"
          else
            echo "should_commit=false" >> "$GITHUB_OUTPUT"
          fi
      - name: Commit changes to branch
        if: steps.check_should_commit.outputs.should_commit == 'true'
        uses: stefanzweifel/git-auto-commit-action@v4
        with:
          commit_message: |
            ${{ github.event.head_commit.message }}

            DiffTrain build for commit https://github.com/facebook/react/commit/${{ github.sha }}.
          commit_user_name: ${{ github.actor }}
          commit_user_email: ${{ github.actor }}@users.noreply.github.com