# Cut a release: stamp the version across every package.json, commit, tag, push.
#
# This does NOT build and does NOT deploy. Pushing the `vX.Y.Z` tag is what
# triggers build.yml, which publishes `X.Y.Z`, `X.Y`, `sha-<short>` and `latest`
# image tags. Deploying stays a separate, deliberate act: once the build is
# green, dispatch deploy-galactus.yml with `tag=X.Y.Z` (no leading v — the tag
# carries the `v`, the image tag does not).
#
# Why a workflow instead of three local commands: the release commit is the one
# thing that must be identical every time, and cutting it from a laptop is how
# a manifest bump gets forgotten or a tag lands on an unpushed commit. Here the
# only input is the number.
#
# Prereqs (once):
#  - Repo secret RELEASE_TOKEN: a Gitea personal access token with
#    write:repository on this repo. The built-in Actions token is deliberately
#    NOT used — whether a push made with it re-triggers build.yml depends on the
#    Gitea version, and a release that silently publishes no images is worse
#    than one that fails. A PAT push is an ordinary push and always triggers.
#    If build.yml somehow does not start, it has workflow_dispatch: run it
#    against the new tag by hand.

name: Cut release

on:
  workflow_dispatch:
    inputs:
      bump:
        description: "Which part to bump (choose 'explicit' to type the number)"
        type: choice
        required: true
        default: "minor"
        options:
          - patch
          - minor
          - major
          - explicit
      version:
        description: "Exact version when bump=explicit (x.y.z, no leading v)"
        required: false
        default: ""

jobs:
  release:
    name: Release
    runs-on: docker
    container:
      image: node:20-alpine
    steps:
      - name: Install tools
        run: apk add --no-cache git

      - name: Preflight — RELEASE_TOKEN
        env:
          RELEASE_TOKEN: ${{ secrets.RELEASE_TOKEN }}
        run: |
          set -eu
          if [ -z "${RELEASE_TOKEN:-}" ]; then
            echo "::error::Secret RELEASE_TOKEN is not set. Create a Gitea PAT with"
            echo "::error::write:repository and add it as a repo secret named RELEASE_TOKEN."
            exit 1
          fi

      # Full history + tags: the duplicate-tag check below is meaningless
      # against a shallow clone, which has none of them.
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          ref: master
          token: ${{ secrets.RELEASE_TOKEN }}

      - name: Resolve the new version
        id: ver
        env:
          BUMP: ${{ github.event.inputs.bump }}
          EXPLICIT: ${{ github.event.inputs.version }}
        run: |
          set -eu
          CURRENT=$(node -p "require('./package.json').version")
          echo "current: $CURRENT"

          if [ "$BUMP" = "explicit" ]; then
            NEXT="$EXPLICIT"
            if [ -z "$NEXT" ]; then
              echo "::error::bump=explicit requires the version input."
              exit 1
            fi
          else
            NEXT=$(node -e '
              const [cur, part] = process.argv.slice(1);
              const m = /^(\d+)\.(\d+)\.(\d+)/.exec(cur);
              if (!m) { console.error(`unparseable current version: ${cur}`); process.exit(1); }
              let [maj, min, pat] = m.slice(1).map(Number);
              if (part === "major") { maj += 1; min = 0; pat = 0; }
              else if (part === "minor") { min += 1; pat = 0; }
              else { pat += 1; }
              process.stdout.write(`${maj}.${min}.${pat}`);
            ' "$CURRENT" "$BUMP")
          fi

          # set-version.mjs validates the shape too, but failing here keeps the
          # working tree clean when the input is a typo.
          case "$NEXT" in
            v*) echo "::error::Version must not carry a leading 'v' (got $NEXT)."; exit 1 ;;
          esac
          if ! printf '%s' "$NEXT" | grep -Eq '^[0-9]+\.[0-9]+\.[0-9]+(-[0-9A-Za-z.-]+)?$'; then
            echo "::error::Invalid version: $NEXT (expected x.y.z)."
            exit 1
          fi
          if [ "$NEXT" = "$CURRENT" ]; then
            echo "::error::$NEXT is already the current version."
            exit 1
          fi
          if git rev-parse -q --verify "refs/tags/v$NEXT" >/dev/null; then
            echo "::error::Tag v$NEXT already exists. Releases are immutable — pick a new number."
            exit 1
          fi

          echo "next: $NEXT"
          echo "version=$NEXT" >> "$GITHUB_OUTPUT"

      - name: Stamp the version across every manifest
        run: node scripts/set-version.mjs "${{ steps.ver.outputs.version }}"

      # A release whose only content is the version bump means the dispatch was
      # a mistake — set-version.mjs already refused a no-op above, so an empty
      # diff here means the manifests were somehow already at this number.
      - name: Commit, tag, push
        env:
          RELEASE_TOKEN: ${{ secrets.RELEASE_TOKEN }}
          VERSION: ${{ steps.ver.outputs.version }}
          ACTOR: ${{ github.actor }}
        run: |
          set -eu
          if git diff --quiet; then
            echo "::error::No manifest changed. Nothing to release."
            exit 1
          fi

          git config user.name "gitea-actions"
          git config user.email "actions@git.mancinas.io"

          git commit -a \
            -m "chore(release): v${VERSION}" \
            -m "Cut by ${ACTOR} via the \"Cut release\" workflow. Pushing the tag triggers build.yml; deploy separately with tag=${VERSION}."
          git tag -a "v${VERSION}" -m "v${VERSION}"

          # Re-point at an authenticated remote. The token is a secret, so Gitea
          # masks it in the log; nothing here echoes the URL regardless.
          git remote set-url origin \
            "$(printf '%s' "${GITHUB_SERVER_URL}" | sed "s#://#://x-access-token:${RELEASE_TOKEN}@#")/${GITHUB_REPOSITORY}.git"

          # One push for both refs: a commit that lands without its tag builds
          # nothing and looks like a successful release.
          git push origin "HEAD:master" "refs/tags/v${VERSION}"

      - name: Summary
        env:
          VERSION: ${{ steps.ver.outputs.version }}
        run: |
          set -eu
          echo "Released v${VERSION}."
          echo ""
          echo "build.yml is now building git.mancinas.io/rmancinas/jorgecuadros-{api,web}:${VERSION}."
          echo "When it is green, dispatch 'Deploy to galactus' with:"
          echo "  tag=${VERSION}  scope=app  bootstrap=false  skip_migrate=false"