#!/bin/bash
# Deploy script for GamerComp.com
# Usage: ./deploy.sh [--clear-cloudflare]
#
# Cache clearing order (correct sequence):
#   1. Cloudflare CDN (if --clear-cloudflare) - Clear edge servers first
#   2. Build new frontend assets (with new hashed filenames)
#   3. Restart backend API
#   4. Reload nginx (picks up new files)
#   5. Clean old artifacts
#   6. Users clear browser cache via /clear-cache.html

set -e

echo "=========================================="
echo "  GamerComp.com Deploy Script"
echo "=========================================="

# Colors
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m' # No Color

# Navigate to project root
cd /home/gamearc/game-arcade

# Load environment variables (for Cloudflare credentials)
if [[ -f backend/.env ]]; then
    export $(grep -E '^CLOUDFLARE_' backend/.env | xargs)
fi

# Step 1: Clear Cloudflare cache FIRST (if requested and configured)
# This ensures edge servers don't serve stale content during deploy
if [[ "$1" == "--clear-cloudflare" ]]; then
    if [[ -n "$CLOUDFLARE_ZONE_ID" && -n "$CLOUDFLARE_API_TOKEN" ]]; then
        echo -e "${YELLOW}Step 1: Clearing Cloudflare cache (before deploy)...${NC}"
        RESULT=$(curl -X POST "https://api.cloudflare.com/client/v4/zones/${CLOUDFLARE_ZONE_ID}/purge_cache" \
            -H "Authorization: Bearer ${CLOUDFLARE_API_TOKEN}" \
            -H "Content-Type: application/json" \
            --data '{"purge_everything":true}' \
            --silent)
        if echo "$RESULT" | jq -e '.success' > /dev/null 2>&1; then
            echo -e "${GREEN}Cloudflare cache cleared!${NC}"
        else
            echo -e "${YELLOW}Warning: Cloudflare purge may have failed${NC}"
            echo "$RESULT" | jq .
        fi
    else
        echo -e "${YELLOW}Step 1: Skipping Cloudflare - credentials not set${NC}"
        echo "To enable, add to ~/.bashrc:"
        echo "  export CLOUDFLARE_ZONE_ID='your_zone_id'"
        echo "  export CLOUDFLARE_API_TOKEN='your_api_token'"
    fi
else
    echo -e "${YELLOW}Step 1: Skipping Cloudflare (use --clear-cloudflare to purge CDN)${NC}"
fi

# Step 2: Build frontend (creates new hashed filenames)
echo -e "${YELLOW}Step 2: Building frontend...${NC}"
cd frontend
npm run build
cd ..
echo -e "${GREEN}Frontend built successfully!${NC}"

# Step 3: Restart backend
echo -e "${YELLOW}Step 3: Restarting backend...${NC}"
pm2 restart gamercomp-api
echo -e "${GREEN}Backend restarted!${NC}"

# Step 4: Reload nginx (serves new files)
echo -e "${YELLOW}Step 4: Reloading nginx...${NC}"
sudo nginx -t && sudo systemctl reload nginx
echo -e "${GREEN}Nginx reloaded!${NC}"

# Step 5: Clear old cached files
echo -e "${YELLOW}Step 5: Cleaning up old build artifacts...${NC}"
find /home/gamearc/game-arcade/frontend/dist/assets -name "*.js" -mtime +7 -delete 2>/dev/null || true
find /home/gamearc/game-arcade/frontend/dist/assets -name "*.css" -mtime +7 -delete 2>/dev/null || true
echo -e "${GREEN}Cleanup complete!${NC}"

# Step 6: Purge Cloudflare AGAIN after new files are live
# This ensures CDN fetches the new hashed files
if [[ "$1" == "--clear-cloudflare" && -n "$CLOUDFLARE_ZONE_ID" && -n "$CLOUDFLARE_API_TOKEN" ]]; then
    echo -e "${YELLOW}Step 6: Final Cloudflare purge (new files now live)...${NC}"
    curl -X POST "https://api.cloudflare.com/client/v4/zones/${CLOUDFLARE_ZONE_ID}/purge_cache" \
        -H "Authorization: Bearer ${CLOUDFLARE_API_TOKEN}" \
        -H "Content-Type: application/json" \
        --data '{"purge_everything":true}' \
        --silent > /dev/null
    echo -e "${GREEN}Cloudflare cache purged!${NC}"
fi

echo ""
echo "=========================================="
echo -e "${GREEN}  Deploy Complete!${NC}"
echo "=========================================="
echo ""
echo "Cache clearing order completed:"
echo "  1. Cloudflare CDN purged (if --clear-cloudflare)"
echo "  2. New frontend built with fresh hashed filenames"
echo "  3. Backend restarted"
echo "  4. Nginx reloaded"
echo "  5. Old artifacts cleaned"
if [[ "$1" == "--clear-cloudflare" ]]; then
    echo "  6. Final Cloudflare purge (ensures CDN has new files)"
fi
echo ""
echo "For users to clear browser cache:"
echo "  • Visit /clear-cache.html"
echo "  • Or hard refresh: Ctrl+Shift+R (Win) / Cmd+Shift+R (Mac)"
echo ""
echo "Service worker auto-updates within seconds."