ci: Fix deploying previews for forked repositories

.github/workflows/ci.yml

@@ -249,27 +249,18 @@ jobs:
 
       - name: Build docs
         run: target/debug/xtask doc --deny-warnings
-
+      
-      - name: Deploy PR preview
+      - name: Compress docs
-        id: deploy_preview
         if: github.event_name == 'pull_request'
-        continue-on-error: true
+        run: |
-        uses: dswistowski/surge-sh-action@v1.0.1
+          tar --zstd -cf docs.tar.zstd -C target doc
-        with:
-          domain: pr-${{ github.event.number }}--ruma-docs.surge.sh
-          project: target/doc
-          login: ${{ secrets.SURGE_LOGIN }}
-          token: ${{ secrets.SURGE_TOKEN }}
 
-      - name: Comment deploy PR preview URL
+      - name: Upload docs as artifact
-        if: steps.deploy_preview.outcome == 'success'
+        if: github.event_name == 'pull_request'
-        uses: Beakyn/gha-comment-pull-request@v1.0.2
+        uses: actions/upload-artifact@v3
-        env:
-          GITHUB_TOKEN: ${{ github.token }}
         with:
-          description-message: |
+          name: docs
-            ----
+          path: docs.tar.zstd
-            Preview: https://pr-${{ github.event.number }}--ruma-docs.surge.sh
 
       - name: Deploy to docs repo
         if: github.event_name == 'push' && github.ref == 'refs/heads/main'

.github/workflows/docs-preview.yml

@@ -0,0 +1,62 @@
+name: Docs Preview
+
+env:
+  CARGO_TERM_COLOR: always
+
+on:
+  workflow_run:
+    workflows: [CI]
+    types:
+      - completed
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.pull_requests[0] != null
+    steps:
+      - name: Download artifact
+        uses: actions/github-script@v6
+        with:
+          script: |
+            let allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                run_id: context.payload.workflow_run.id,
+            });
+            let matchArtifact = allArtifacts.data.artifacts.filter((artifact) => {
+              return artifact.name == "docs";
+            })[0];
+            let download = await github.rest.actions.downloadArtifact({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                artifact_id: matchArtifact.id,
+                archive_format: 'zip',
+            });
+            let fs = require('fs');
+            fs.writeFileSync(`${process.env.GITHUB_WORKSPACE}/docs.zip`, Buffer.from(download.data));
+      
+      - name: Unzip artifact
+        run: |
+          unzip docs.zip
+          tar -xf docs.tar.zstd
+
+      - name: Deploy PR preview
+        continue-on-error: true
+        id: deploy_preview
+        uses: dswistowski/surge-sh-action@v1.0.1
+        with:
+          domain: pr-${{ github.event.workflow_run.pull_requests[0].number }}--ruma-docs.surge.sh
+          project: doc
+          login: ${{ secrets.SURGE_LOGIN }}
+          token: ${{ secrets.SURGE_TOKEN }}
+
+      - name: Comment PR preview URL
+        if: steps.deploy_preview.outcome == 'success'
+        uses: Beakyn/gha-comment-pull-request@v1.0.2
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        with:
+          pull-request-number: ${{ github.event.workflow_run.pull_requests[0].number }}
+          description-message: |
+            ----
+            Preview: https://pr-${{ github.event.workflow_run.pull_requests[0].number }}--ruma-docs.surge.sh

.github/workflows/docs-remove-preview.yml

@@ -0,0 +1,57 @@
+name: Docs Remove Preview
+
+env:
+  CARGO_TERM_COLOR: always
+
+on:
+  workflow_run:
+    workflows: [PR Closed]
+    types:
+      - completed
+
+jobs:
+  teardown:
+    runs-on: ubuntu-latest
+    if: github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event == 'pull_request'
+    steps:
+      - name: Get PR number
+        uses: actions/github-script@v6
+        id: get_pr
+        continue-on-error: true
+        with:
+          script: |
+            let login = context.payload.workflow_run.head_repository.owner.login;
+            let branch = context.payload.workflow_run.head_branch;
+            let head = `${login}:${branch}`;
+            let prs = await github.rest.pulls.list({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              state: "closed",
+              head,
+            });
+            if (prs.data.length > 0) {
+              core.setOutput("prnumber", prs.data[0].number);
+            } else {
+              core.setFailed("Could not find PR");
+            }
+      
+      - name: Teardown preview
+        if: steps.get_pr.outcome == 'success'
+        continue-on-error: true
+        uses: adrianjost/actions-surge.sh-teardown@v1.0.3
+        with:
+          regex: pr-${{ steps.get_pr.outputs.prnumber }}--ruma-docs.surge.sh
+        env:
+          SURGE_LOGIN: ${{ secrets.SURGE_LOGIN }}
+          SURGE_TOKEN: ${{ secrets.SURGE_TOKEN }}
+
+      - name: Remove PR preview URL
+        if: steps.get_pr.outcome == 'success'
+        uses: Beakyn/gha-comment-pull-request@v1.0.2
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        with:
+          pull-request-number: ${{ steps.get_pr.outputs.prnumber }}
+          description-message: |
+            ----
+            Preview Removed

.github/workflows/pr-closed.yml

@@ -7,20 +7,7 @@ on:
 
 jobs:
   docs:
-    name: Remove Docs Preview
+    name: Trigger
     runs-on: ubuntu-latest
     steps:
-      - name: Teardown
+      - run: 'echo "PR number: ${{ github.event.number }}"'
-        uses: adrianjost/actions-surge.sh-teardown@v1.0.3
-        with:
-          regex: pr-${{ github.event.number }}--ruma-docs.surge.sh
-        env:
-          SURGE_LOGIN: ${{ secrets.SURGE_LOGIN }}
-          SURGE_TOKEN: ${{ secrets.SURGE_TOKEN }}
-
-      - name: Remove preview URL
-        uses: Beakyn/gha-comment-pull-request@v1.0.2
-        env:
-          GITHUB_TOKEN: ${{ github.token }}
-        with:
-          description-message: Preview removed