#!/bin/bash
set -e

# ──────────────────────────────────────────
# Crewli Deploy Script
# Run on VPS: ./deploy.sh [tag]
# Examples:
#   ./deploy.sh              → deploys latest main
#   ./deploy.sh v1.2.0       → deploys specific tag
# ──────────────────────────────────────────

APP_DIR="/home/crewli/crewli"
PHP="/usr/local/php84/bin/php"
COMPOSER="/usr/local/bin/composer"
HEALTHCHECK_URL="https://api.crewli.app/up"
TAG="${1:-}"

# Load fnm (Node version manager)
export PATH="$HOME/.local/share/fnm:$PATH"
eval "$(fnm env)"

echo "══════════════════════════════════════"
echo "  Crewli — Deploy"
echo "══════════════════════════════════════"

cd "$APP_DIR"

# ──────────────────────────────────────────
# 0. Preflight checks
# ──────────────────────────────────────────

# Prevent concurrent deploys (race conditions on git + npm)
exec 200>/tmp/crewli-deploy.lock
flock -n 200 || { echo "❌ Another deploy is already running. Aborting."; exit 1; }

# Verify .env exists — without it config:cache will crash the app
if [ ! -f .env ]; then
    echo "❌ .env missing — aborting before any changes"
    exit 1
fi

# Capture current commit for rollback hint on failure
PREVIOUS_COMMIT=$(git rev-parse HEAD)
echo "→ Current commit: $PREVIOUS_COMMIT"

# Rollback hint on any failure after this point
trap 'echo ""; echo "❌ Deploy failed. To roll back run:"; echo "    cd $APP_DIR && git reset --hard $PREVIOUS_COMMIT && ./deploy.sh"; echo ""; $PHP artisan up 2>/dev/null || true' ERR

# ──────────────────────────────────────────
# 1. Maintenance mode
# ──────────────────────────────────────────
echo "→ Enabling maintenance mode..."
$PHP artisan down --retry=30 || true

# ──────────────────────────────────────────
# 2. Pull latest code
# ──────────────────────────────────────────
echo "→ Pulling from Gitea..."
git fetch --all --tags

if [ -n "$TAG" ]; then
    echo "→ Checking out tag: $TAG"
    git checkout "$TAG"
else
    echo "→ Checking out latest main"
    git checkout main
    git pull origin main
fi

NEW_COMMIT=$(git rev-parse HEAD)
echo "→ New commit: $NEW_COMMIT"

# ──────────────────────────────────────────
# 3. Install PHP dependencies
# ──────────────────────────────────────────
# Only run composer install if composer.lock actually changed
if ! git diff --quiet "$PREVIOUS_COMMIT" "$NEW_COMMIT" -- composer.lock; then
    echo "→ composer.lock changed — installing Composer dependencies..."
    $PHP $COMPOSER install --no-dev --optimize-autoloader --no-interaction
else
    echo "→ composer.lock unchanged — skipping composer install"
    # Still regenerate autoloader in case new classes were added
    $PHP $COMPOSER dump-autoload --optimize --no-dev --no-interaction
fi

# ──────────────────────────────────────────
# 4. Install Node dependencies and build
# ──────────────────────────────────────────
if ! git diff --quiet "$PREVIOUS_COMMIT" "$NEW_COMMIT" -- package-lock.json; then
    echo "→ package-lock.json changed — running npm ci..."
    npm ci --production=false
else
    echo "→ package-lock.json unchanged — skipping npm ci"
fi

echo "→ Building frontend assets (apps/app)..."
npm run build -w apps/app

if [ ! -f "apps/app/dist/index.html" ]; then
    echo "❌ Build failed: apps/app/dist/index.html missing"
    exit 1
fi

# ──────────────────────────────────────────
# 5. Run migrations
# ──────────────────────────────────────────
echo "→ Running migrations..."
$PHP artisan migrate --force

# ──────────────────────────────────────────
# 6. Clear and rebuild caches
# ──────────────────────────────────────────
echo "→ Clearing all caches..."
$PHP artisan optimize:clear

echo "→ Rebuilding caches..."
$PHP artisan config:cache
$PHP artisan route:cache
$PHP artisan event:cache
$PHP artisan view:cache   # Needed for Blade email templates (TransactionalMail)

# ──────────────────────────────────────────
# 7. File permissions
# ──────────────────────────────────────────
# Ensure storage/cache dirs are writable by both crewli user and www-data
echo "→ Fixing permissions..."
chown -R crewli:crewli storage bootstrap/cache
chmod -R ug+rwX storage bootstrap/cache

# ──────────────────────────────────────────
# 8. Restart queue (process pending jobs with new code)
# ──────────────────────────────────────────
# NB: Supervisor/systemd must be configured to restart workers after signal
echo "→ Signaling queue workers to restart..."
$PHP artisan queue:restart

# ──────────────────────────────────────────
# 9. Storage link (idempotent)
# ──────────────────────────────────────────
$PHP artisan storage:link 2>/dev/null || true

# ──────────────────────────────────────────
# 10. Disable maintenance mode
# ──────────────────────────────────────────
echo "→ Going live!"
$PHP artisan up

# ──────────────────────────────────────────
# 11. Health check
# ──────────────────────────────────────────
echo "→ Running health check..."
sleep 2  # Give PHP-FPM a moment to pick up new code

HEALTH_CODE=$(curl -sf -o /dev/null -w "%{http_code}" --max-time 10 "$HEALTHCHECK_URL" || echo "000")

if [ "$HEALTH_CODE" != "200" ]; then
    echo ""
    echo "⚠️  Health check failed — HTTP $HEALTH_CODE on $HEALTHCHECK_URL"
    echo "   Site is marked 'up' but may be broken."
    echo "   Investigate immediately or roll back:"
    echo "     cd $APP_DIR && git reset --hard $PREVIOUS_COMMIT && ./deploy.sh"
    exit 1
fi

echo "✓ Health check passed (HTTP 200)"

# ──────────────────────────────────────────
# Done
# ──────────────────────────────────────────

# Clear the rollback trap — we made it
trap - ERR

echo ""
echo "══════════════════════════════════════"
if [ -n "$TAG" ]; then
    echo "  ✓ Deployed: $TAG"
else
    echo "  ✓ Deployed: main (latest)"
fi
echo "  ✓ Commit:   $NEW_COMMIT"
echo "══════════════════════════════════════"