#!/usr/bin/env bash
# create-release.sh — Full release automation for Archipelago
#
# Bumps version in Cargo.toml and package.json, generates changelog from git log,
# creates release manifest, and creates git tag.
#
# Usage:
#   ./scripts/create-release.sh 1.0.0         # Release v1.0.0
#   ./scripts/create-release.sh 1.0.0 --dry-run  # Preview without changes
#
# Releases are tarball-only. ISO builds are archived under
# image-recipe/_archived/. Nodes OTA-update from releases/manifest.json.

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"
DRY_RUN=false
VERSION=""

# Parse args
for arg in "$@"; do
    case "$arg" in
        --dry-run) DRY_RUN=true ;;
        --help|-h)
            echo "Usage: $0 VERSION [--dry-run]"
            echo ""
            echo "Steps performed:"
            echo "  1. Validate version format (SemVer)"
            echo "  2. Bump version in Cargo.toml and package.json"
            echo "  3. Build frontend"
            echo "  4. Generate changelog from git log"
            echo "  5. Create release manifest"
            echo "  6. Commit version bump"
            echo "  7. Create git tag v{VERSION}"
            echo ""
            echo "Options:"
            echo "  --dry-run    Show what would be done without making changes"
            exit 0
            ;;
        *)
            if [ -z "$VERSION" ]; then
                VERSION="$arg"
            else
                echo "Error: Unknown argument: $arg"
                exit 1
            fi
            ;;
    esac
done

if [ -z "$VERSION" ]; then
    echo "Error: VERSION argument required"
    echo "Usage: $0 VERSION [--dry-run]"
    exit 1
fi

# Validate SemVer format
if ! echo "$VERSION" | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9.]+)?$'; then
    echo "Error: Version '$VERSION' is not valid SemVer (expected: X.Y.Z or X.Y.Z-suffix)"
    exit 1
fi

# Check we're on main branch
BRANCH=$(git -C "$PROJECT_ROOT" branch --show-current)
if [ "$BRANCH" != "main" ]; then
    echo "Error: Must be on 'main' branch (currently on '$BRANCH')"
    exit 1
fi

# Check for uncommitted changes
if ! git -C "$PROJECT_ROOT" diff --quiet HEAD; then
    echo "Error: Uncommitted changes detected. Commit or stash first."
    exit 1
fi

# Check tag doesn't already exist
if git -C "$PROJECT_ROOT" tag -l "v$VERSION" | grep -q "v$VERSION"; then
    echo "Error: Tag v$VERSION already exists"
    exit 1
fi

# Get current version
CURRENT_CARGO_VERSION=$(grep '^version' "$PROJECT_ROOT/core/archipelago/Cargo.toml" | head -1 | sed 's/.*"\(.*\)".*/\1/')
CURRENT_NPM_VERSION=$(node -p "require('$PROJECT_ROOT/neode-ui/package.json').version")

echo "=== Archipelago Release v${VERSION} ==="
echo "  Current Cargo version: ${CURRENT_CARGO_VERSION}"
echo "  Current npm version:   ${CURRENT_NPM_VERSION}"
echo "  Target version:        ${VERSION}"
echo "  Dry run:               ${DRY_RUN}"
echo ""

if $DRY_RUN; then
    echo "[DRY RUN] Would perform the following:"
    echo "  1. Update core/archipelago/Cargo.toml version to $VERSION"
    echo "  2. Update neode-ui/package.json version to $VERSION"
    echo "  3. Build frontend (npm run build)"
    echo "  4. Generate changelog from git log since v${CURRENT_CARGO_VERSION}"
    echo "  5. Create release manifest"
    echo "  6. Commit: 'chore: release v${VERSION}'"
    echo "  7. Tag: v${VERSION}"
    echo ""
    echo "After this script, you would:"
    echo "  - Push: git push && git push --tags"
    echo "  - Build ISOs on server: ssh archipelago@192.168.1.228"
    exit 0
fi

echo "[1/7] Bumping version in Cargo.toml..."
# Update archipelago Cargo.toml
sed -i.bak "s/^version = \".*\"/version = \"$VERSION\"/" "$PROJECT_ROOT/core/archipelago/Cargo.toml"
rm -f "$PROJECT_ROOT/core/archipelago/Cargo.toml.bak"

# Also update workspace Cargo.lock if it exists
if [ -f "$PROJECT_ROOT/core/Cargo.lock" ]; then
    # Cargo will update the lock file on next build; touch the toml to trigger
    true
fi

echo "[2/7] Bumping version in package.json..."
cd "$PROJECT_ROOT/neode-ui"
npm version "$VERSION" --no-git-tag-version --allow-same-version 2>/dev/null || true
cd "$PROJECT_ROOT"

echo "[3/7] Building frontend..."
cd "$PROJECT_ROOT/neode-ui"
npm run build 2>&1 | tail -3
cd "$PROJECT_ROOT"

echo "[4/7] Generating changelog..."
# Get commits since last tag (or last 50 if no tags)
LAST_TAG=$(git -C "$PROJECT_ROOT" describe --tags --abbrev=0 2>/dev/null || echo "")
if [ -n "$LAST_TAG" ]; then
    GIT_LOG=$(git -C "$PROJECT_ROOT" log "$LAST_TAG"..HEAD --oneline --no-merges 2>/dev/null || echo "")
else
    GIT_LOG=$(git -C "$PROJECT_ROOT" log --oneline --no-merges -50 2>/dev/null || echo "")
fi

# Create/update CHANGELOG.md entry
CHANGELOG_FILE="$PROJECT_ROOT/CHANGELOG.md"
RELEASE_DATE=$(date +%Y-%m-%d)
CHANGELOG_ENTRY="## v${VERSION} (${RELEASE_DATE})

$GIT_LOG
"

if [ -f "$CHANGELOG_FILE" ]; then
    # Prepend new entry after the first line (title)
    EXISTING=$(cat "$CHANGELOG_FILE")
    FIRST_LINE=$(head -1 "$CHANGELOG_FILE")
    REST=$(tail -n +2 "$CHANGELOG_FILE")
    echo "$FIRST_LINE" > "$CHANGELOG_FILE"
    echo "" >> "$CHANGELOG_FILE"
    echo "$CHANGELOG_ENTRY" >> "$CHANGELOG_FILE"
    echo "$REST" >> "$CHANGELOG_FILE"
else
    echo "# Changelog" > "$CHANGELOG_FILE"
    echo "" >> "$CHANGELOG_FILE"
    echo "$CHANGELOG_ENTRY" >> "$CHANGELOG_FILE"
fi

echo "[5/7] Creating release manifest..."
"$SCRIPT_DIR/create-release-manifest.sh" --version "$VERSION" --date "$RELEASE_DATE" --output "$PROJECT_ROOT/release-manifest.json" 2>&1 | grep -v "^$"

echo "[6/7] Committing version bump..."
git -C "$PROJECT_ROOT" add \
    core/archipelago/Cargo.toml \
    neode-ui/package.json \
    neode-ui/package-lock.json \
    CHANGELOG.md \
    release-manifest.json \
    2>/dev/null || true

git -C "$PROJECT_ROOT" commit -m "chore: release v${VERSION}"

echo "[7/7] Creating git tag..."
git -C "$PROJECT_ROOT" tag -a "v${VERSION}" -m "Release v${VERSION}"

echo ""
echo "=== Release v${VERSION} Ready ==="
echo ""
echo "Artifacts:"
echo "  - Version bumped in Cargo.toml and package.json"
echo "  - Changelog updated in CHANGELOG.md"
echo "  - Release manifest: release-manifest.json"
echo "  - Git tag: v${VERSION}"
echo ""
echo "Next steps:"
echo "  1. Review: git log --oneline -5"
echo "  2. Push to gitea-local and gitea-vps2:"
echo "       git push gitea-local main --tags && git push gitea-vps2 main --tags"
echo "  3. Verify manifest is live on both mirrors:"
echo "       curl -fsS http://localhost:3000/lfg2025/archy/raw/branch/main/releases/manifest.json"
echo "       curl -fsS http://146.59.87.168:3000/lfg2025/archy/raw/branch/main/releases/manifest.json"