#!/usr/bin/env bash
#
# Bump, tag, build, and push a new release.
#
# Usage:  ./scripts/release.sh <version>
#
# Prerequisites:
#   - On `main` branch, working tree clean
#   - Tools: rust/cargo, git-cliff, cargo-readme, prek
#
# What it does:
#   1. Pre-flight: branch check, clean tree, user confirmation
#   2. Regenerate README.md + abbaye.schema.json
#   3. Bump version in Cargo.toml, commit
#   4. Tag (so git-cliff can find it)
#   5. Generate changelog, amend release commit
#   6. Pre-commit hooks (may amend again if hooks modify files)
#   7. Release build
#   8. Force-push branch + tags
#   9. Build abbaye website with itself
#  10. Deploy docs to server

set -euo pipefail

VERSION="${1:-}"
if [[ -z "$VERSION" ]]; then
    echo "Usage: $0 <version>"
    exit 1
fi

# ── Pre-flight ─────────────────────────────────────────────────────────────

BRANCH=$(git rev-parse --abbrev-ref HEAD)
if [[ "$BRANCH" != "main" ]]; then
    echo "Error: must be on main branch (currently on $BRANCH)"
    exit 1
fi

if ! git diff --quiet; then
    echo "Error: working tree has uncommitted changes"
    exit 1
fi

read -rp "Release v${VERSION}? [y/N] " CONFIRM
if [[ "$CONFIRM" != "y" && "$CONFIRM" != "Y" ]]; then
    echo "Aborted."
    exit 1
fi

# ── Pre-flight regeneration ────────────────────────────────────────────────

echo "=== Regenerating README ==="
cargo readme --no-indent-headings --no-title > README.md
git add README.md

echo "=== Regenerating schema ==="
cargo run --bin abbaye dump-schema > abbaye.schema.json
git add abbaye.schema.json

# ── Bump version ───────────────────────────────────────────────────────────

echo "=== Bumping version to $VERSION ==="
cargo set-version "$VERSION"
git add Cargo.toml Cargo.lock
git commit -m "chore: release v${VERSION}"

# ── Tag (before changelog so git-cliff can find this version) ──────────────

echo "=== Tagging v${VERSION} ==="
git tag "v${VERSION}"

# ── Changelog (amend into release commit) ──────────────────────────────────

echo "=== Generating changelog ==="
git cliff -o CHANGELOG.md
git add CHANGELOG.md
# Skip hooks: the changelog-check hook would fail because it runs against the
# staged changelog while the tag now points at HEAD~1, making git-cliff think
# this version is already released.  We run hooks explicitly next.
git commit --amend --no-edit -n

# ── Pre-commit hooks ───────────────────────────────────────────────────────

echo "=== Running pre-commit hooks ==="
prek run --all-files

# If hooks modified anything (trailing whitespace, EOF fixes, fmt), fold them
# into the release commit.
if ! git diff --quiet; then
    git add -A
    git commit --amend --no-edit -n
fi

# ── Build ──────────────────────────────────────────────────────────────────

echo "=== Building release binary ==="
cargo build --release

# ── Push (move tag to the final amended commit) ────────────────────────────

echo "=== Pushing ==="
git tag --force "v${VERSION}"
git push --force

# ── Post-release ───────────────────────────────────────────────────────────

echo "=== Building abbaye website ==="
cargo run --release --bin abbaye -- build

echo "=== Deploying docs ==="
rsync --progress -avz --links --perms --update public/ ololduck@vit.am:public_html/abbaye/