name: Release

on:
  push:
    branches:
      - main

jobs:
  create_tag_and_release:
    name: create-tag-and-release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Create version tag and Gitea release
        env:
          GITEA_RELEASE_TOKEN: ${{ secrets.GITEA_RELEASE_TOKEN }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail

          BASE_SHA="${GITHUB_EVENT_BEFORE:-}"
          if [ -z "$BASE_SHA" ] || [ "$BASE_SHA" = "0000000000000000000000000000000000000000" ]; then
            if git rev-parse --verify HEAD^ >/dev/null 2>&1; then
              BASE_SHA="$(git rev-parse HEAD^)"
            fi
          fi

          if [ -n "$BASE_SHA" ] && git diff --quiet "$BASE_SHA...$GITHUB_SHA" -- pubspec.yaml README.md ':(glob)**/*.dart'; then
            echo "No release-relevant files changed (pubspec.yaml, README.md, *.dart); skipping tag/release creation."
            exit 0
          fi

          PACKAGE_VERSION="$(sed -nE 's/^version:\s*([^[:space:]]+)\s*$/\1/p' pubspec.yaml | head -n1)"
          if [ -z "$PACKAGE_VERSION" ]; then
            echo "Failed to parse version from pubspec.yaml."
            exit 1
          fi

          TAG="v${PACKAGE_VERSION}"
          TOKEN="${GITEA_RELEASE_TOKEN:-}"
          if [ -z "$TOKEN" ]; then
            TOKEN="${GITHUB_TOKEN:-}"
          fi

          if [ -z "$TOKEN" ]; then
            echo "Missing release token. Provide GITEA_RELEASE_TOKEN or a usable default workflow token."
            exit 1
          fi

          SERVER_URL="${GITHUB_SERVER_URL:-${GITEA_SERVER_URL:-}}"
          REPO_PATH="${GITHUB_REPOSITORY:-${GITEA_REPOSITORY:-}}"
          SHA="${GITHUB_SHA:-}"

          if [ -z "$SERVER_URL" ] || [ -z "$REPO_PATH" ] || [ -z "$SHA" ]; then
            echo "Missing repository context required for Gitea API release creation."
            exit 1
          fi

          RELEASE_BY_TAG_URL="${SERVER_URL}/api/v1/repos/${REPO_PATH}/releases/tags/${TAG}"
          LOOKUP_HTTP_CODE="$(curl -sS -o /tmp/gitea-release-lookup.json -w '%{http_code}' \
            -H "Authorization: token ${TOKEN}" \
            "$RELEASE_BY_TAG_URL")"

          if [ "$LOOKUP_HTTP_CODE" = "200" ]; then
            echo "Release ${TAG} already exists; skipping release creation."
            exit 0
          fi

          if [ "$LOOKUP_HTTP_CODE" != "404" ]; then
            echo "Failed to query release-by-tag endpoint. HTTP ${LOOKUP_HTTP_CODE}."
            cat /tmp/gitea-release-lookup.json
            exit 1
          fi

          CREATE_RELEASE_URL="${SERVER_URL}/api/v1/repos/${REPO_PATH}/releases"
          RELEASE_PAYLOAD="{\"tag_name\":\"${TAG}\",\"target\":\"${SHA}\",\"target_commitish\":\"${SHA}\",\"title\":\"${TAG}\",\"name\":\"${TAG}\",\"note\":\"Release ${TAG}\",\"body\":\"Release ${TAG}\",\"draft\":false,\"prerelease\":false}"

          HTTP_CODE="$(curl -sS -o /tmp/gitea-release-response.json -w '%{http_code}' \
            -X POST "$CREATE_RELEASE_URL" \
            -H "Authorization: token ${TOKEN}" \
            -H 'Content-Type: application/json' \
            -d "$RELEASE_PAYLOAD")"

          if [ "$HTTP_CODE" = "201" ]; then
            echo "Created Gitea release for ${TAG}."
          elif [ "$HTTP_CODE" = "409" ]; then
            echo "Release or tag ${TAG} already exists; treating as success."
          else
            echo "Failed to create Gitea release. HTTP ${HTTP_CODE}."
            cat /tmp/gitea-release-response.json
            exit 1
          fi