#!/bin/bash

# Pre-Push Hook Script
# Runs all checks locally before allowing push to remote

set -e  # Exit on any error

echo "🚀 Running Pre-Push Checks..."
echo "================================"

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Function to print colored output
print_status() {
    echo -e "${BLUE}[INFO]${NC} $1"
}

print_success() {
    echo -e "${GREEN}[SUCCESS]${NC} $1"
}

print_warning() {
    echo -e "${YELLOW}[WARNING]${NC} $1"
}

print_error() {
    echo -e "${RED}[ERROR]${NC} $1"
}

# Check if we're in a git repository
if ! git rev-parse --git-dir > /dev/null 2>&1; then
    print_error "Not in a git repository!"
    exit 1
fi

# Get current branch
CURRENT_BRANCH=$(git branch --show-current)
print_status "Current branch: $CURRENT_BRANCH"

# Check if there are uncommitted changes
if ! git diff-index --quiet HEAD --; then
    print_error "You have uncommitted changes. Please commit or stash them first."
    exit 1
fi

# 1. Install dependencies
print_status "Installing dependencies..."
if ! npm ci --silent; then
    print_error "Failed to install dependencies"
    exit 1
fi
print_success "Dependencies installed"

# 2. Run ESLint
print_status "Running ESLint..."
if ! npm run lint; then
    print_error "ESLint failed! Please fix the errors before pushing."
    exit 1
fi
print_success "ESLint passed"

# 3. Run Tests
print_status "Running tests..."
if ! npm run test; then
    print_error "Tests failed! Please fix the failing tests before pushing."
    exit 1
fi
print_success "All tests passed"

# 4. Build Application
print_status "Building application..."
if ! npm run build; then
    print_error "Build failed! Please fix the build errors before pushing."
    exit 1
fi
print_success "Build successful"

# 5. Security Audit
print_status "Running security audit..."
if ! npm audit --audit-level=moderate; then
    print_warning "Security vulnerabilities found. Consider running 'npm audit fix'"
    # Don't fail the push for security warnings, just warn
fi

# 6. Type Check
print_status "Running TypeScript type check..."
if ! npx tsc --noEmit; then
    print_error "TypeScript type check failed!"
    exit 1
fi
print_success "TypeScript type check passed"

echo ""
echo "================================"
print_success "All pre-push checks passed! ✅"
print_status "Ready to push to $CURRENT_BRANCH"
echo "================================"

# Optional: Show what will be pushed
echo ""
print_status "Files to be pushed:"
git diff --name-only origin/$CURRENT_BRANCH..HEAD 2>/dev/null || git diff --name-only HEAD~1..HEAD

echo ""
print_status "Proceeding with push..."