# Release: tag v* -> build the one-line install artifacts and publish a GitHub Release.
# Releases are immutable: once published, assets can never be replaced. A tiny check-release
# job therefore gates the release job on the tag's Release not existing yet — dispatching an
# already-released tag skips the build/upload entirely and only re-runs npm publishing.
# Two parallel jobs (the release job is gated on the existence check):
# - release: build the monorepo -> pnpm deploy a production CLI dir -> assemble penguin/ (bin + lib + web)
#   -> four platform packages each bundling the official Node runtime + a universal package -> SHA256 files -> upload to the Release.
#   Artifacts: penguin-{linux,darwin}-{x64,arm64}.tar.gz, penguin-universal.tar.gz,
#   their .sha256 files, SHA256SUMS, and install.sh; one version per tag, multiple versions coexist.
# - publish-npm: publish the whole chain (@prismshadow/penguin-skills -> @prismshadow/penguin-core
#   -> @prismshadow/penguin-server -> @prismshadow/penguin-cli) to npm at the tag version.
#   skills/core serve the penguin-sdk Skill's `npm install`; server ships the built web assets inside
#   the package (web-dist/, its default web dir falls back to it), so `npm install -g
#   @prismshadow/penguin-cli` alone yields a working `penguin` incl. the Web UI (needs Node >= 24).
#   The publish flow mirrors AgentHub's publish.yml: OIDC trusted publishing (environment: npm +
#   id-token: write, no token). A Trusted Publisher can only be configured in the settings page of a
#   package that ALREADY EXISTS on the registry, so a brand-new package cannot be first-published by
#   this workflow. Release checklist for a new package: (1) a maintainer bootstrap-publishes it once
#   manually with a one-off granular token (revoke it afterwards), running the same prepare steps as
#   this job (stamp versions, build, copy LICENSE + web-dist) and publishing with `pnpm publish
#   --access public --no-git-checks` -- NEVER `npm publish`, which keeps workspace:* deps unrewritten
#   and yields a package that fails to install (Unsupported URL Type "workspace:");
#   (2) configure this repo + workflow as its Trusted Publisher on npmjs; (3) subsequent tags publish
#   via OIDC. The publish step is idempotent (versions already on the registry are skipped), so a tag
#   that failed mid-chain can be re-run as-is after fixing the config.
#   npm publishing lives here rather than a separate `on: release: published` workflow: the Release is created
#   by this workflow's GITHUB_TOKEN, and GitHub won't trigger other workflows' release events from that.
name: Release

on:
  push:
    tags: ["v*"]
  workflow_dispatch:
    inputs:
      tag:
        description: "Release tag (e.g. v0.1.0)"
        required: true

env:
  # Bundled Node runtime version (official nodejs.org dist, aligned with engines >=24).
  NODE_RUNTIME_VERSION: v24.18.0

jobs:
  # Skip the build/upload when the tag's Release already exists (immutable releases forbid
  # replacing assets, so re-uploading can only fail; npm publishing is idempotent on its own).
  check-release:
    runs-on: ubuntu-latest
    permissions:
      contents: read
    outputs:
      exists: ${{ steps.check.outputs.exists }}
    steps:
      - id: check
        env:
          GH_TOKEN: ${{ github.token }}
          TAG: ${{ github.event_name == 'workflow_dispatch' && inputs.tag || github.ref_name }}
        run: |
          if gh release view "$TAG" --repo "$GITHUB_REPOSITORY" >/dev/null 2>&1; then
            echo "exists=true" >> "$GITHUB_OUTPUT"
          else
            echo "exists=false" >> "$GITHUB_OUTPUT"
          fi

  release:
    needs: check-release
    if: needs.check-release.outputs.exists != 'true'
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      # On manual dispatch, check out the tag itself (not the selected branch HEAD): a tag whose Release is
      # missing (e.g. an earlier run failed before publishing) rebuilds from the tag's own source. On tag-push,
      # leaving ref empty is the default.
      - uses: actions/checkout@v5
        with:
          ref: ${{ github.event_name == 'workflow_dispatch' && inputs.tag || '' }}

      # pnpm version comes from package.json's packageManager field.
      - uses: pnpm/action-setup@v4

      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      # Inject the release tag into core's VERSION constant (the source for CLI --version and the install-complete
      # message); otherwise artifacts always carry the in-repo dev version and multiple installs can't be told apart.
      - name: Stamp release version
        run: |
          TAG="${{ github.event_name == 'workflow_dispatch' && inputs.tag || github.ref_name }}"
          V="${TAG#v}"
          grep -q 'export const VERSION = "' packages/core/src/index.ts
          sed -i "s/export const VERSION = \"[^\"]*\"/export const VERSION = \"$V\"/" packages/core/src/index.ts

      - name: Build (tsup + vite)
        run: pnpm build

      # lib/: the CLI and its production deps (including workspace core/server/skills, all build outputs);
      # pnpm 10's deploy needs --legacy (this repo doesn't enable inject-workspace-packages).
      # bin/penguin launcher: resolve its own real path (following symlinks) -> default PENGUIN_WEB_DIST to
      # the sibling web/ -> use the bundled runtime (node/bin/node) if present, else fall back to system node.
      - name: Assemble penguin/ (lib + web + bin)
        run: |
          pnpm --filter @prismshadow/penguin-cli --prod deploy --legacy "$PWD/out/penguin/lib"
          cp -r packages/web/dist out/penguin/web
          mkdir -p out/penguin/bin
          cat > out/penguin/bin/penguin <<'EOF'
          #!/bin/sh
          SELF="$0"
          while [ -h "$SELF" ]; do
            DIR="$(cd "$(dirname "$SELF")" && pwd)"
            SELF="$(readlink "$SELF")"
            case "$SELF" in /*) ;; *) SELF="$DIR/$SELF" ;; esac
          done
          DIR="$(cd "$(dirname "$SELF")/.." && pwd)"
          export PENGUIN_WEB_DIST="${PENGUIN_WEB_DIST:-$DIR/web}"
          if [ -x "$DIR/node/bin/node" ]; then
            exec "$DIR/node/bin/node" "$DIR/lib/dist/index.js" "$@"
          fi
          exec node "$DIR/lib/dist/index.js" "$@"
          EOF
          chmod +x out/penguin/bin/penguin

      # Platform packages: linux uses .tar.xz, darwin uses .tar.gz (nodejs.org naming);
      # node/ is only lightly trimmed (drop share/doc and share/man, keep the rest).
      - name: Package platform + universal tarballs
        run: |
          mkdir -p dist-artifacts
          for target in linux-x64 linux-arm64 darwin-x64 darwin-arm64; do
            os="${target%%-*}"
            arch="${target#*-}"
            name="node-$NODE_RUNTIME_VERSION-$os-$arch"
            if [ "$os" = "linux" ]; then ext="tar.xz"; else ext="tar.gz"; fi
            curl -fsSL "https://nodejs.org/dist/$NODE_RUNTIME_VERSION/$name.$ext" -o "/tmp/$name.$ext"
            rm -rf /tmp/node-runtime out/penguin/node
            mkdir -p /tmp/node-runtime
            if [ "$ext" = "tar.xz" ]; then
              tar -xJf "/tmp/$name.$ext" -C /tmp/node-runtime
            else
              tar -xzf "/tmp/$name.$ext" -C /tmp/node-runtime
            fi
            mv "/tmp/node-runtime/$name" out/penguin/node
            rm -rf out/penguin/node/share/doc out/penguin/node/share/man
            tar -czf "dist-artifacts/penguin-$os-$arch.tar.gz" -C out penguin
          done
          # Universal package: no bundled runtime, requires system Node >= 24.
          rm -rf out/penguin/node
          tar -czf dist-artifacts/penguin-universal.tar.gz -C out penguin

      # SHA256SUMS summary + a same-named .sha256 per artifact (install.sh verifies against the latter).
      - name: Generate SHA256 checksums
        run: |
          cd dist-artifacts
          sha256sum *.tar.gz > SHA256SUMS
          for f in *.tar.gz; do
            sha256sum "$f" > "$f.sha256"
          done

      # Release notes come from changelog/<version>/RELEASE.md, written during release preparation and
      # committed BEFORE the tag (the release job runs on the tag's checkout, so a file added afterwards
      # is invisible here). Present and non-empty -> published verbatim as the body; absent -> GitHub
      # generates a body from the merged PRs. Either way the Release can never ship an empty body, which
      # is what happened to v0.1.1: the step passed neither body nor generate_release_notes, the action
      # left the body unset, and the omission was only visible once the Release was public.
      - name: Resolve release notes
        id: notes
        env:
          TAG: ${{ github.event_name == 'workflow_dispatch' && inputs.tag || github.ref_name }}
        run: |
          NOTES="changelog/${TAG#v}/RELEASE.md"
          if [ -s "$NOTES" ]; then
            echo "Publishing curated release notes from $NOTES"
            echo "body_path=$NOTES" >> "$GITHUB_OUTPUT"
            echo "generate=false" >> "$GITHUB_OUTPUT"
          else
            echo "No $NOTES; falling back to GitHub-generated notes."
            echo "body_path=" >> "$GITHUB_OUTPUT"
            echo "generate=true" >> "$GITHUB_OUTPUT"
          fi

      # On tag-push use the ref name; on manual dispatch use the input tag.
      # An empty body_path is falsy for the action and simply ignored (it never tries to read it), so the
      # fallback branch cleanly leaves generate_release_notes to compose the body on its own.
      - name: Publish GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ github.event_name == 'workflow_dispatch' && inputs.tag || github.ref_name }}
          body_path: ${{ steps.notes.outputs.body_path }}
          generate_release_notes: ${{ steps.notes.outputs.generate }}
          files: |
            dist-artifacts/*.tar.gz
            dist-artifacts/*.sha256
            dist-artifacts/SHA256SUMS
            install.sh

  publish-npm:
    name: Publish npm packages
    runs-on: ubuntu-latest
    # OIDC trusted publishing (same as AgentHub's publish.yml): no token; npmjs establishes trust via
    # environment `npm` + this workflow. A publish failure doesn't affect the release job (independent, parallel).
    permissions:
      id-token: write
      contents: read
    environment:
      name: npm
      url: https://www.npmjs.com/package/@prismshadow/penguin-cli
    steps:
      - uses: actions/checkout@v5
        with:
          ref: ${{ github.event_name == 'workflow_dispatch' && inputs.tag || '' }}

      - uses: pnpm/action-setup@v4

      - uses: actions/setup-node@v5
        with:
          node-version: 24
          cache: pnpm
          registry-url: "https://registry.npmjs.org"

      # npm Trusted Publishing (OIDC) requires npm CLI >= 11.5.1: Node 24 ships npm 11.x, which satisfies it;
      # this just asserts the version to guard against regressions -- pnpm publish's registry auth ultimately
      # delegates to system npm, ordinary CI doesn't exercise OIDC (so a green run won't catch it), and too old
      # a version only surfaces as an auth failure when actually publishing a tag.
      - name: Assert npm supports trusted publishing (>= 11.5.1)
        run: |
          V="$(npm --version)"
          echo "npm $V"
          node -e 'const [M, m, p] = process.argv[1].split(".").map(Number); if (M < 11 || (M === 11 && (m < 5 || (m === 5 && p < 1)))) { console.error("npm " + process.argv[1] + " < 11.5.1"); process.exit(1); }' "$V"

      - name: Install dependencies
        run: pnpm install --frozen-lockfile

      # Version always comes from the tag: package version and core's VERSION constant are injected together (the
      # repo keeps the dev version). All published packages must bump in lockstep -- pnpm publish rewrites every
      # workspace:* dep to the dependency's current version, so the versions must match.
      - name: Stamp release version
        run: |
          TAG="${{ github.event_name == 'workflow_dispatch' && inputs.tag || github.ref_name }}"
          V="${TAG#v}"
          grep -q 'export const VERSION = "' packages/core/src/index.ts
          sed -i "s/export const VERSION = \"[^\"]*\"/export const VERSION = \"$V\"/" packages/core/src/index.ts
          (cd packages/skills && npm version --no-git-tag-version --allow-same-version "$V")
          (cd packages/core && npm version --no-git-tag-version --allow-same-version "$V")
          (cd packages/server && npm version --no-git-tag-version --allow-same-version "$V")
          (cd packages/cli && npm version --no-git-tag-version --allow-same-version "$V")

      # Dependency order: cli bundles core's dist (tsup noExternal), server/web need core's types;
      # web is built here only to be copied into the server package below.
      - name: Build and test
        run: |
          pnpm --filter @prismshadow/penguin-skills build
          pnpm --filter @prismshadow/penguin-core build
          pnpm --filter @prismshadow/penguin-server build
          pnpm --filter @prismshadow/penguin-web build
          pnpm --filter @prismshadow/penguin-cli build
          pnpm --filter @prismshadow/penguin-skills test
          pnpm --filter @prismshadow/penguin-core test
          pnpm --filter @prismshadow/penguin-server test
          pnpm --filter @prismshadow/penguin-cli test

      # Copy LICENSE into the package dirs (the files allowlist includes it, so artifacts ship the license)
      # and the built web assets into the server package (web-dist/, in its files allowlist: an npm install
      # serves the Web UI from there without PENGUIN_WEB_DIST).
      # Idempotent: a version already on the registry is skipped. The check tests `npm view`'s output
      # rather than its exit code -- for a missing version of an existing package, older npm exits 0 and
      # newer npm exits 1, but the output is non-empty only when the version exists. Re-running the tag
      # after a mid-chain failure (e.g. Trusted Publisher not configured yet) picks up where it left off.
      - name: Publish to npm
        run: |
          TAG="${{ github.event_name == 'workflow_dispatch' && inputs.tag || github.ref_name }}"
          V="${TAG#v}"
          cp LICENSE packages/skills/LICENSE
          cp LICENSE packages/core/LICENSE
          cp LICENSE packages/server/LICENSE
          cp LICENSE packages/cli/LICENSE
          rm -rf packages/server/web-dist
          cp -r packages/web/dist packages/server/web-dist
          for pkg in skills core server cli; do
            name="@prismshadow/penguin-$pkg"
            if [ -n "$(npm view "$name@$V" version 2>/dev/null || true)" ]; then
              echo "$name@$V already on the registry, skipping."
              continue
            fi
            pnpm --filter "$name" publish --access public --no-git-checks
          done