name: Release

on:
  push:
    tags:
      - "v*"

permissions: write-all

jobs:
  release:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Install Rust
        run: |
          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal
          echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"

      - name: Test
        run: cargo test --locked

      - name: Build release binary
        run: cargo build --release --locked

      - name: Package binary
        run: |
          set -eu
          tag="${GITHUB_REF_NAME:-${GITEA_REF_NAME:-}}"
          if [ -z "$tag" ]; then
            tag="$(printf '%s' "${GITHUB_REF:-${GITEA_REF:-}}" | sed 's#refs/tags/##')"
          fi
          archive="openstock-${tag}-linux-x86_64.tar.gz"
          mkdir -p dist
          cp target/release/openstock dist/openstock
          chmod 755 dist/openstock
          tar -C dist -czf "$archive" openstock
          sha256sum "$archive" > "$archive.sha256"
          printf 'RELEASE_ARCHIVE=%s\n' "$archive" >> "$GITHUB_ENV"
          printf 'RELEASE_SHA256=%s\n' "$archive.sha256" >> "$GITHUB_ENV"

      - name: Create Gitea release
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          SERVER_URL: ${{ gitea.server_url }}
          REPOSITORY: ${{ gitea.repository }}
          TAG_NAME: ${{ gitea.ref_name }}
        run: |
          set -eu
          api="${SERVER_URL%/}/api/v1/repos/$REPOSITORY/releases"
          body="$(printf '{"tag_name":"%s","target_commitish":"main","name":"%s","body":"Automated release for %s","draft":false,"prerelease":false}' "$TAG_NAME" "$TAG_NAME" "$TAG_NAME")"
          response_file="$(mktemp)"
          status="$(curl -sS -o "$response_file" -w '%{http_code}' -X POST "$api" \
            -H "Authorization: token $GITEA_TOKEN" \
            -H "Content-Type: application/json" \
            -d "$body")"
          response="$(cat "$response_file")"
          if [ "$status" != "201" ]; then
            response="$(curl -fsS \
              -H "Authorization: token $GITEA_TOKEN" \
              "$api/tags/$TAG_NAME")"
          fi
          release_id="$(printf '%s' "$response" | sed -n 's/.*"id":[[:space:]]*\([0-9][0-9]*\).*/\1/p' | head -n 1)"
          if [ -z "$release_id" ]; then
            echo "failed to parse release id from Gitea response" >&2
            printf '%s\n' "$response" >&2
            exit 1
          fi
          printf 'RELEASE_ID=%s\n' "$release_id" >> "$GITHUB_ENV"

      - name: Upload release assets
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
          SERVER_URL: ${{ gitea.server_url }}
          REPOSITORY: ${{ gitea.repository }}
        run: |
          set -eu
          release_url="${SERVER_URL%/}/api/v1/repos/$REPOSITORY/releases/$RELEASE_ID"
          upload_url="$release_url/assets"
          release_json="$(curl -fsS -H "Authorization: token $GITEA_TOKEN" "$release_url")"

          delete_asset_if_exists() {
            asset_name="$1"
            asset_id="$(printf '%s' "$release_json" \
              | tr '{' '\n' \
              | grep "\"name\":\"$asset_name\"" \
              | sed -n 's/.*"id":[[:space:]]*\([0-9][0-9]*\).*/\1/p' \
              | head -n 1)"
            if [ -n "$asset_id" ]; then
              curl -fsS -X DELETE "$upload_url/$asset_id" \
                -H "Authorization: token $GITEA_TOKEN"
            fi
          }

          delete_asset_if_exists "$RELEASE_ARCHIVE"
          delete_asset_if_exists "$RELEASE_SHA256"

          curl -fsS -X POST "$upload_url?name=$RELEASE_ARCHIVE" \
            -H "Authorization: token $GITEA_TOKEN" \
            -F "attachment=@$RELEASE_ARCHIVE"
          curl -fsS -X POST "$upload_url?name=$RELEASE_SHA256" \
            -H "Authorization: token $GITEA_TOKEN" \
            -F "attachment=@$RELEASE_SHA256"