#!/bin/bash
set -e  # Exit on any error

# Configuration
DEPLOY_DIR="/opt/semblance"
FRONTEND_DEST="/var/www/html/semblance"
PYTHON_CMD="python3.13"

echo "======================================"
echo "Starting deployment..."
echo "======================================"

# Step 1: Pull latest changes
echo ""
echo "[1/6] Pulling latest changes from git..."
cd "$DEPLOY_DIR"
git pull

# Step 2: Set up frontend environment
echo ""
echo "[2/6] Setting up frontend environment..."
cp .env.production .env

# Step 3: Set up Python virtual environment
echo ""
echo "[3/6] Setting up Python virtual environment..."
cd "$DEPLOY_DIR/backend"
if [ ! -d "venv" ]; then
    echo "Creating new virtual environment with $PYTHON_CMD..."
    $PYTHON_CMD -m venv venv
else
    echo "Virtual environment already exists."
fi

# Step 4: Install Python dependencies
echo ""
echo "[4/6] Installing Python dependencies..."
source venv/bin/activate
pip install -r requirements.txt --quiet

# Step 5: Build and deploy frontend
echo ""
echo "[5/6] Building and deploying frontend..."
cd "$DEPLOY_DIR"
npm install --silent
npm run build

echo "Cleaning deployment directory..."
rm -rf "$FRONTEND_DEST"/*
echo "Copying new build..."
cp -r dist/* "$FRONTEND_DEST/"

# Step 6: Create backend directories
echo ""
echo "[6/7] Creating backend directories..."
mkdir -p "$DEPLOY_DIR/backend/uploads"
mkdir -p "$DEPLOY_DIR/backend/temp"
sudo chown -R www-data:www-data "$DEPLOY_DIR/backend/uploads" "$DEPLOY_DIR/backend/temp"

# Step 7: Restart backend service
echo ""
echo "[7/7] Restarting backend service..."
sudo systemctl restart semblance.service

echo ""
echo "======================================"
echo "Deployment complete!"
echo "======================================"
echo ""
systemctl status semblance.service --no-pager