#!/bin/bash

# Visual Workflow Builder - Setup Verification Script

echo "🔍 Verifying Visual Workflow Builder Setup..."
echo ""

ERRORS=0

# Check if we're in the right directory
if [ ! -d "frontend" ] || [ ! -d "backend" ]; then
    echo "❌ Error: Please run this script from the visual_workflow_builder directory"
    exit 1
fi

echo "📁 Checking directory structure..."

# Frontend directories
FRONTEND_DIRS=(
    "frontend/src"
    "frontend/src/components/Canvas"
    "frontend/src/components/Palette"
    "frontend/src/components/PropertiesPanel"
    "frontend/src/components/TargetSelector"
    "frontend/src/models"
    "frontend/src/services"
    "frontend/src/store"
    "frontend/src/utils"
    "frontend/public"
    "frontend/tests"
)

for dir in "${FRONTEND_DIRS[@]}"; do
    if [ -d "$dir" ]; then
        echo "  ✅ $dir"
    else
        echo "  ❌ Missing: $dir"
        ERRORS=$((ERRORS + 1))
    fi
done

# Backend directories
BACKEND_DIRS=(
    "backend/api"
    "backend/models"
    "backend/services"
    "backend/utils"
    "backend/tests"
)

for dir in "${BACKEND_DIRS[@]}"; do
    if [ -d "$dir" ]; then
        echo "  ✅ $dir"
    else
        echo "  ❌ Missing: $dir"
        ERRORS=$((ERRORS + 1))
    fi
done

echo ""
echo "📄 Checking configuration files..."

# Frontend config files
FRONTEND_FILES=(
    "frontend/package.json"
    "frontend/tsconfig.json"
    "frontend/webpack.config.js"
    "frontend/.eslintrc.json"
    "frontend/jest.config.js"
    "frontend/src/index.tsx"
    "frontend/src/App.tsx"
    "frontend/public/index.html"
)

for file in "${FRONTEND_FILES[@]}"; do
    if [ -f "$file" ]; then
        echo "  ✅ $file"
    else
        echo "  ❌ Missing: $file"
        ERRORS=$((ERRORS + 1))
    fi
done

# Backend config files
BACKEND_FILES=(
    "backend/app.py"
    "backend/requirements.txt"
    "backend/.env.example"
    "backend/pytest.ini"
    "backend/api/workflows.py"
    "backend/api/templates.py"
    "backend/api/node_types.py"
    "backend/api/executions.py"
    "backend/api/websocket_handlers.py"
)

for file in "${BACKEND_FILES[@]}"; do
    if [ -f "$file" ]; then
        echo "  ✅ $file"
    else
        echo "  ❌ Missing: $file"
        ERRORS=$((ERRORS + 1))
    fi
done

echo ""
echo "🔧 Checking system dependencies..."

# Check Node.js
if command -v node &> /dev/null; then
    NODE_VERSION=$(node --version)
    echo "  ✅ Node.js: $NODE_VERSION"
else
    echo "  ❌ Node.js not found"
    ERRORS=$((ERRORS + 1))
fi

# Check npm
if command -v npm &> /dev/null; then
    NPM_VERSION=$(npm --version)
    echo "  ✅ npm: $NPM_VERSION"
else
    echo "  ❌ npm not found"
    ERRORS=$((ERRORS + 1))
fi

# Check Python
if command -v python3 &> /dev/null; then
    PYTHON_VERSION=$(python3 --version)
    echo "  ✅ Python: $PYTHON_VERSION"
else
    echo "  ❌ Python 3 not found"
    ERRORS=$((ERRORS + 1))
fi

# Check pip
if command -v pip3 &> /dev/null; then
    PIP_VERSION=$(pip3 --version | cut -d' ' -f2)
    echo "  ✅ pip: $PIP_VERSION"
else
    echo "  ❌ pip3 not found"
    ERRORS=$((ERRORS + 1))
fi

echo ""
echo "📊 Summary:"
echo "  Total checks: $((${#FRONTEND_DIRS[@]} + ${#BACKEND_DIRS[@]} + ${#FRONTEND_FILES[@]} + ${#BACKEND_FILES[@]} + 4))"
echo "  Errors: $ERRORS"

if [ $ERRORS -eq 0 ]; then
    echo ""
    echo "✅ Setup verification passed!"
    echo ""
    echo "Next steps:"
    echo "  1. Install dependencies:"
    echo "     cd frontend && npm install"
    echo "     cd backend && pip install -r requirements.txt"
    echo ""
    echo "  2. Start the application:"
    echo "     ./start.sh"
    echo ""
    exit 0
else
    echo ""
    echo "❌ Setup verification failed with $ERRORS errors"
    echo "Please check the missing files/directories above"
    exit 1
fi