Deploy preview in dedicated root with context per PR

Signed-off-by: Benoit Donneaux <benoit@leastauthority.com>

.gitea/pr-commenter.yml

@@ -6,13 +6,13 @@ comment:
       files:
         - '**'
       body: |
-        #### :hammer: Docker image `{{ imageOutcome }}`
+        #### :hammer: Docker build `{{ imageOutcome }}`
 
     - id: build-{{ buildOutcome }}
       files:
         - '**'
       body: |
-        #### :mag: Jekyll build `{{ buildOutcome }}`
+        #### :wrench: Jekyll build `{{ buildOutcome }}`
         <details><summary>Build Output</summary>
 
         ```
@@ -26,7 +26,7 @@ comment:
         - '**'
       body: |
         #### :rocket: Jekyll deploy `{{ deployOutcome }}`
-        #### :link: Preview documentation [here](https://www.lafs.eval.latfa.net/{{ deployPrefix}}/{{ deploySuffix }})
+        #### :link: Preview site [here](https://{{ deployWebHost }}{{ deployWebContext }})
 
     - id: pusher-{{ gitActor }}-{{ gitEventName }}-{{ gitRunNumber }}
       files:

.gitea/workflows/jekyll.yaml

@@ -8,8 +8,9 @@ on:
 env:
   _UID: 1000
   _GID: 1000
-  PREFIX: site
-  SUFFIX: preview
+  WEB_DOMAIN: lafs.eval.latfa.net
+  WEB_USER: www
+  WEB_DIR: /var/www
 jobs:
   jekyll:
     runs-on: ubuntu-22.04
@@ -54,11 +55,23 @@ jobs:
           chmod 600 ~/.ssh/id_ed25519
       - name: Deploy Jekyll site
         id: deploy_site
-        if: ${{ gitea.ref == 'refs/heads/main' }}
         run: |
-          rsync -halvi \
+          if [ "${{ gitea.ref }}" = 'refs/heads/main' ]; then
+            WEB_ROOT="${WEB_DIR}/site"
+            WEB_HOST="www.${WEB_DOMAIN}"
+            WEB_CONTEXT='/'
+          else
+            WEB_ROOT="${WEB_DIR}/preview"
+            WEB_HOST="preview.${WEB_DOMAIN}"
+            WEB_CONTEXT='/{{ gitea.event.pull_request.number }}/'
+          end
+          # Save those variabes in the environment for the next steps
+          echo "WEB_HOST=${WEB_HOST}" >> $GITEA_ENV
+          echo "WEB_CONTEXT=${WEB_CONTEXT}" >> $GITEA_ENV
+          # Synchronize the local and the remote site
+          rsync -halvi --delete \
             -e "ssh -a -x -o StrictHostKeyChecking=no" \
-            ./_site/ www@lafs.eval.latfa.net:/var/www/site/
+            "./_site/${WEB_USER}@${WEB_DOMAIN}:${WEB_ROOT}${WEB_CONTEXT}"
       - name: Comment pull request
         id: comment_pull_request
         if: gitea.event_name == 'pull_request'
@@ -70,8 +83,8 @@ jobs:
               "buildOutcome": "${{ steps.build_site.outcome }}",
               "buildOutputsResult": ${{ toJSON(steps.build_site.outputs.result) }},
               "deployOutcome": "${{ steps.deploy_site.outcome }}",
-              "deployPrefix": "${{ env.PREFIX }}",
-              "deploySuffix": "${{ env.SUFFIX }}",
+              "deployWebHost": "${{ env.WEB_HOST }}",
+              "deployWebContext": "${{ env.WEB_CONTEXT }}",
               "gitActor": "${{ gitea.actor }}",
               "gitEventName": "${{ gitea.event_name }}",
               "gitWorkflow": "${{ gitea.workflow }}",
@@ -83,5 +96,5 @@ jobs:
         id: fail-on-error
         if: |
           steps.build_site.outcome != 'success'
-          || (github.event_name == 'pull_request' && steps.deploy_site.outcome != 'success')
+          || (gittea.event_name == 'pull_request' && steps.deploy_site.outcome != 'success')
         run: exit 1