Refactor workflows: split pull request build, rename deploy, and remove unused steps

Signed-off-by: Chaoscaot <max@maxsp.de>

.gitea/workflows/build.yml

@@ -1,6 +1,10 @@
-name: Build
+name: Deploy
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - main
+      - version/*
 
 jobs:
   build:
@@ -40,7 +44,6 @@ jobs:
         run: ./gradlew build --no-daemon
 
       - name: Stage deploy artifacts
-        if: ${{ github.event_name == 'push' && (github.ref_name == 'main' || startsWith(github.ref_name, 'version/')) }}
         shell: bash
         run: |
           set -euo pipefail
@@ -66,7 +69,6 @@ jobs:
           cp "WebsiteBackend/build/libs/WebsiteBackend-all.jar" "deploy/website-api.jar"
 
       - name: Upload deploy artifacts
-        if: ${{ github.event_name == 'push' && (github.ref_name == 'main' || startsWith(github.ref_name, 'version/')) }}
         uses: actions/upload-artifact@v3
         with:
           name: steamwar-jars
@@ -76,7 +78,6 @@ jobs:
     name: Deploy
     runs-on: ubuntu-latest
     needs: build
-    if: ${{ github.event_name == 'push' && (github.ref_name == 'main' || startsWith(github.ref_name, 'version/')) }}
     steps:
       - name: Download deploy artifacts
         uses: actions/download-artifact@v3
@@ -129,33 +130,3 @@ jobs:
 
           ssh -i ~/.ssh/deploy_key -p "$port" "${DEPLOY_USER}@${DEPLOY_HOST}" "mkdir -p '$DEPLOY_PATH'"
           scp -i ~/.ssh/deploy_key -P "$port" deploy/* "${DEPLOY_USER}@${DEPLOY_HOST}:$DEPLOY_PATH/"
-
-  merge-backport:
-    name: Merge backport
-    runs-on: ubuntu-latest
-    needs: build
-    if: ${{ github.event_name == 'pull_request' && startsWith(github.event.pull_request.base.ref, 'version/') && startsWith(github.event.pull_request.head.ref, 'backport/pr-') }}
-    permissions:
-      contents: write
-      pull-requests: write
-    steps:
-      - name: Merge successful backport PR
-        shell: bash
-        env:
-          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
-        run: |
-          set -euo pipefail
-
-          pr_number="$(jq -r '.number' "$GITHUB_EVENT_PATH")"
-          target_branch="$(jq -r '.pull_request.base.ref' "$GITHUB_EVENT_PATH")"
-          payload="$(jq -n \
-            --arg title "Merge backport #${pr_number} into ${target_branch}" \
-            '{Do: "merge", MergeTitleField: $title, MergeMessageField: "Automatic CommonCore backport after successful build.", delete_branch_after_merge: true}')"
-
-          curl --fail --silent --show-error \
-            -X POST \
-            -H "Authorization: token ${GITEA_TOKEN}" \
-            -H "Accept: application/json" \
-            -H "Content-Type: application/json" \
-            --data "$payload" \
-            "${GITHUB_API_URL}/repos/${GITHUB_REPOSITORY}/pulls/${pr_number}/merge"