name: Release Drafter

on:
  push:
    branches:
      - main
  workflow_dispatch:

jobs:
  update_release_draft:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      pull-requests: write
    steps:
      - id: drafter
        uses: release-drafter/release-drafter@v6
        with:
          config-name: release-drafter.yml
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Add direct commits
        if: steps.drafter.outputs.id != ''
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          RELEASE_ID: ${{ steps.drafter.outputs.id }}
          HEAD_SHA: ${{ github.sha }}
        run: |
          set -euo pipefail

          latest_tag="$(gh api "repos/${GITHUB_REPOSITORY}/releases/latest" --jq '.tag_name' 2>/dev/null || true)"

          if [ -n "$latest_tag" ]; then
            commits_json="$(gh api "repos/${GITHUB_REPOSITORY}/compare/${latest_tag}...${HEAD_SHA}" --jq '.commits')"
          else
            commits_json="$(gh api "repos/${GITHUB_REPOSITORY}/commits?sha=${HEAD_SHA}&per_page=100")"
          fi

          direct_commits="$(mktemp)"
          printf '%s\n' "$commits_json" \
            | jq -r '.[] | [.sha, (.commit.message | split("\n")[0]), (.author.login // .commit.author.name)] | @tsv' \
            > "$direct_commits"

          features=()
          fixes=()
          refactors=()
          docs=()
          maintenance=()

          while IFS=$'\t' read -r sha subject author; do
            if [[ -z "$sha" || "$subject" =~ ^Merge[[:space:]] ]]; then
              continue
            fi

            prs="$(gh api \
              -H "Accept: application/vnd.github+json" \
              "repos/${GITHUB_REPOSITORY}/commits/${sha}/pulls" \
              --jq 'length')"

            if [ "$prs" -gt 0 ]; then
              continue
            fi

            short_sha="${sha:0:7}"
            line="- ${short_sha} ${subject} @${author}"
            type="${subject%%:*}"
            type="${type%%(*}"
            type="${type%!}"

            if [ "$type" = "feat" ]; then
              features+=("$line")
            elif [ "$type" = "fix" ]; then
              fixes+=("$line")
            elif [ "$type" = "refactor" ]; then
              refactors+=("$line")
            elif [ "$type" = "docs" ]; then
              docs+=("$line")
            elif [[ "$type" = "chore" || "$type" = "ci" || "$type" = "build" ]]; then
              maintenance+=("$line")
            fi
          done < "$direct_commits"

          direct_notes="$(mktemp)"
          {
            echo "## Direct Commits"
            echo

            if [ "${#features[@]}" -gt 0 ]; then
              echo "### 🚀 Features"
              printf '%s\n' "${features[@]}"
              echo
            fi

            if [ "${#fixes[@]}" -gt 0 ]; then
              echo "### 🐛 Bug Fixes"
              printf '%s\n' "${fixes[@]}"
              echo
            fi

            if [ "${#refactors[@]}" -gt 0 ]; then
              echo "### 📦 Code Refactoring"
              printf '%s\n' "${refactors[@]}"
              echo
            fi

            if [ "${#docs[@]}" -gt 0 ]; then
              echo "### 📄 Documentation"
              printf '%s\n' "${docs[@]}"
              echo
            fi

            if [ "${#maintenance[@]}" -gt 0 ]; then
              echo "### 🧰 Maintenance"
              printf '%s\n' "${maintenance[@]}"
              echo
            fi
          } > "$direct_notes"

          if [ "$(wc -l < "$direct_notes")" -le 2 ]; then
            exit 0
          fi

          body="$(gh api "repos/${GITHUB_REPOSITORY}/releases/${RELEASE_ID}" --jq '.body')"
          body_without_direct="$(printf '%s\n' "$body" | sed '/^## Direct Commits$/,$d')"
          new_body="$(printf '%s\n\n%s\n' "$body_without_direct" "$(cat "$direct_notes")")"

          gh api \
            --method PATCH \
            "repos/${GITHUB_REPOSITORY}/releases/${RELEASE_ID}" \
            -f body="$new_body"