#!/bin/sh
# Validate one committed candidate and publish only its selected annotated tag.
set -eu
cd "$(dirname "$0")/.."

release_version=${1:?usage: scripts/release.sh vMAJOR.MINOR.PATCH}
printf '%s\n' "$release_version" |
    grep -Eq '^v(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)$'
release_commit=$(git rev-parse --verify 'HEAD^{commit}')

check_candidate() {
    test "$(git branch --show-current)" = main
    test -z "$(git status --porcelain)"
    test "$(git rev-parse HEAD)" = "$release_commit"
    git fetch origin main
    test "$(git rev-parse refs/remotes/origin/main)" = "$release_commit"
    if git show-ref --verify --quiet "refs/tags/$release_version"; then
        printf '%s\n' "local tag already exists: $release_version" >&2
        exit 1
    fi
    remote_refs=$(git ls-remote --tags origin "refs/tags/$release_version" "refs/tags/$release_version^{}")
    test -z "$remote_refs"
}

check_candidate
python3 - "$release_version" <<'PY'
from pathlib import Path
import sys

version = sys.argv[1]
note = Path("docs/releases") / (version + ".md")
lines = note.read_text(encoding="utf-8").splitlines()
assert lines and lines[0] == "# Promptkit " + version, f"wrong release title: {note}"
headings = set()
fence = None
for line in lines:
    marker = line.lstrip()[:3]
    if marker in {"```", "~~~"}:
        if fence is None:
            fence = marker
        elif fence == marker:
            fence = None
    elif fence is None:
        headings.add(line)
for section in ("Summary", "Compatibility", "Upgrade", "Changes"):
    assert "## " + section in headings, f"missing {section}: {note}"
PY

./scripts/release-check.sh
check_candidate
release_note=$(git show "$release_commit:docs/releases/$release_version.md")
printf '%s\n\nValidated commit: %s\n' "$release_note" "$release_commit" |
    git tag --annotate --cleanup=verbatim "$release_version" --file - "$release_commit"
test "$(git cat-file -t "refs/tags/$release_version")" = tag
test "$(git rev-parse "refs/tags/$release_version^{commit}")" = "$release_commit"
git push origin "refs/tags/$release_version:refs/tags/$release_version"
printf '%s\n' "Released $release_version. No CI or module-availability wait is required."