ci: restore Gitea build workflow

.gitea/workflows/build.yml

@@ -0,0 +1,124 @@
+name: Build
+
+on:
+  push:
+    branches-ignore:
+      - artifacts
+    tags:
+      - "v*"
+  pull_request:
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Java 21
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: "21"
+
+      - name: Make Gradle wrapper executable
+        run: chmod +x ./gradlew
+
+      - name: Build
+        run: ./gradlew build --no-daemon
+
+      - name: Create Gitea release
+        if: startsWith(github.ref, 'refs/tags/')
+        shell: bash
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+        run: |
+          set -euo pipefail
+
+          tag="${GITHUB_REF_NAME}"
+          api="${GITHUB_SERVER_URL}/api/v1"
+          release_name="WorldHandler ${tag}"
+          jar="$(find build/libs -maxdepth 1 -name '*neoforge*.jar' -print -quit)"
+          token="${GITEA_TOKEN:-${GITHUB_TOKEN:-}}"
+
+          if [ -z "${jar}" ]; then
+            echo "No NeoForge jar found in build/libs" >&2
+            exit 1
+          fi
+
+          if [ -z "${token}" ]; then
+            echo "No Gitea token available" >&2
+            exit 1
+          fi
+
+          release_json="$(mktemp)"
+          if ! curl -fsS \
+            -H "Authorization: token ${token}" \
+            -H "Accept: application/json" \
+            "${api}/repos/${GITHUB_REPOSITORY}/releases/tags/${tag}" \
+            -o "${release_json}"; then
+            export tag release_name GITHUB_SHA
+            python3 -c 'import json, os; print(json.dumps({"tag_name": os.environ["tag"], "target_commitish": os.environ["GITHUB_SHA"], "name": os.environ["release_name"], "body": "NeoForge 21.1.225 build for Minecraft 1.21.1.", "draft": False, "prerelease": False}))' > "${release_json}"
+            curl -fsS \
+              -X POST \
+              -H "Authorization: token ${token}" \
+              -H "Accept: application/json" \
+              -H "Content-Type: application/json" \
+              --data-binary @"${release_json}" \
+              "${api}/repos/${GITHUB_REPOSITORY}/releases" \
+              -o "${release_json}"
+          fi
+
+          release_id="$(python3 -c 'import json,sys; print(json.load(open(sys.argv[1]))["id"])' "${release_json}")"
+          asset_name="$(basename "${jar}")"
+
+          python3 -c 'import json, sys; release = json.load(open(sys.argv[1])); asset_name = sys.argv[2]; [print(asset["id"]) for asset in release.get("assets", []) if asset.get("name") == asset_name]' "${release_json}" "${asset_name}" > assets-to-delete.txt
+
+          while read -r asset_id; do
+            [ -z "${asset_id}" ] && continue
+            curl -fsS \
+              -X DELETE \
+              -H "Authorization: token ${token}" \
+              "${api}/repos/${GITHUB_REPOSITORY}/releases/${release_id}/assets/${asset_id}"
+          done < assets-to-delete.txt
+
+          curl -fsS \
+            -X POST \
+            -H "Authorization: token ${token}" \
+            -H "Accept: application/json" \
+            -F "attachment=@${jar};type=application/java-archive" \
+            "${api}/repos/${GITHUB_REPOSITORY}/releases/${release_id}/assets?name=${asset_name}"
+
+      - name: Publish jar to artifacts branch
+        if: github.event_name != 'pull_request'
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          mkdir -p /tmp/worldhandler-artifacts
+          cp build/libs/*.jar /tmp/worldhandler-artifacts/
+
+          git config user.name "Gitea Actions"
+          git config user.email "actions@gitea.local"
+
+          git fetch origin artifacts || true
+          git switch --force-create artifacts
+          git rm -rf .
+
+          cp /tmp/worldhandler-artifacts/*.jar .
+          cat > README.md <<'EOF'
+          # WorldHandler build artifacts
+
+          This branch is maintained by the Gitea runner.
+          Download the jar file from this branch.
+          EOF
+
+          git add README.md *.jar
+          git commit --allow-empty -m "Publish WorldHandler jar from ${GITHUB_SHA}"
+          git push --force origin artifacts

.gitignore

@@ -130,3 +130,8 @@ bin/
 
 ### Changelog ###
 changelog.txt
+
+### Local Codex build runtime ###
+.codex-jdk/
+.gradle-home/
+temurin-jdk21.zip