#!/bin/bash

# ROA2WEB Ultrathin Monolith - Comprehensive Test Script
# Tests all 14 acceptance criteria from the specification

set -e

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
CYAN='\033[0;36m'
NC='\033[0m' # No Color

# Test results
TESTS_PASSED=0
TESTS_FAILED=0
TESTS_TOTAL=0

# Function to print test header
test_header() {
    echo ""
    echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
    echo -e "${CYAN}TEST $(($TESTS_TOTAL + 1)): $1${NC}"
    echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
}

# Function to check test result
check_test() {
    TESTS_TOTAL=$((TESTS_TOTAL + 1))
    if [ $1 -eq 0 ]; then
        echo -e "${GREEN}✅ PASS${NC}"
        TESTS_PASSED=$((TESTS_PASSED + 1))
        return 0
    else
        echo -e "${RED}❌ FAIL${NC}"
        TESTS_FAILED=$((TESTS_FAILED + 1))
        return 1
    fi
}

# Function to check if port is in use
check_port() {
    lsof -Pi :$1 -sTCP:LISTEN -t >/dev/null 2>&1
}

echo -e "${CYAN}╔══════════════════════════════════════════════════════════╗${NC}"
echo -e "${CYAN}║  ROA2WEB ULTRATHIN MONOLITH - COMPREHENSIVE TEST SUITE  ║${NC}"
echo -e "${CYAN}╚══════════════════════════════════════════════════════════╝${NC}"
echo ""

# ============================================================================
# TEST 1: Single command startup
# ============================================================================
test_header "Single command startup (python backend/main.py)"
echo "This test verifies that the backend can be started with a single command."
echo "Checking if backend/main.py exists..."
if [ -f "backend/main.py" ]; then
    echo "✓ backend/main.py found"
    check_test 0
else
    echo "✗ backend/main.py not found"
    check_test 1
fi

# ============================================================================
# TEST 2: Port 8000 availability
# ============================================================================
test_header "Unified backend running on port 8000"
echo "Checking if backend is running on port 8000..."
if check_port 8000; then
    echo "✓ Backend is running on port 8000"
    check_test 0
else
    echo "✗ Backend is NOT running on port 8000"
    echo "Please start the backend with: ./start-dev-unified.sh"
    check_test 1
fi

# ============================================================================
# TEST 3: Health endpoint
# ============================================================================
test_header "Health endpoint responds correctly"
if check_port 8000; then
    echo "Testing: GET http://localhost:8000/health"
    health_response=$(curl -s http://localhost:8000/health)
    echo "Response:"
    echo "$health_response" | python3 -m json.tool

    if echo "$health_response" | grep -q "api"; then
        echo "✓ Health endpoint returns valid JSON with api status"
        check_test 0
    else
        echo "✗ Health endpoint does not return expected format"
        check_test 1
    fi
else
    echo "✗ Backend not running (skipping test)"
    check_test 1
fi

# ============================================================================
# TEST 4: Module status in health check
# ============================================================================
test_header "Health check shows all module statuses"
if check_port 8000; then
    health_response=$(curl -s http://localhost:8000/health)
    echo "Checking for module statuses in health response..."

    modules_ok=true
    for module in "oracle" "reports_cache" "data_entry_db" "telegram_bot"; do
        if echo "$health_response" | grep -q "$module"; then
            echo "✓ Module '$module' status present"
        else
            echo "✗ Module '$module' status missing"
            modules_ok=false
        fi
    done

    if $modules_ok; then
        check_test 0
    else
        check_test 1
    fi
else
    echo "✗ Backend not running (skipping test)"
    check_test 1
fi

# ============================================================================
# TEST 5: Reports module endpoints
# ============================================================================
test_header "Reports module endpoints accessible"
if check_port 8000; then
    echo "Testing Reports endpoints..."

    # Test /api/reports/cache/status (usually accessible without auth)
    reports_test=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:8000/api/reports/cache/status)
    echo "GET /api/reports/cache/status → HTTP $reports_test"

    # Accept 200 (OK) or 401 (Unauthorized - means endpoint exists but needs auth)
    if [ "$reports_test" = "200" ] || [ "$reports_test" = "401" ]; then
        echo "✓ Reports module endpoint reachable"
        check_test 0
    else
        echo "✗ Reports module endpoint not working (HTTP $reports_test)"
        check_test 1
    fi
else
    echo "✗ Backend not running (skipping test)"
    check_test 1
fi

# ============================================================================
# TEST 6: Data Entry module endpoints
# ============================================================================
test_header "Data Entry module endpoints accessible"
if check_port 8000; then
    echo "Testing Data Entry endpoints..."

    # Test /api/data-entry/receipts (will need auth)
    data_entry_test=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:8000/api/data-entry/receipts)
    echo "GET /api/data-entry/receipts → HTTP $data_entry_test"

    # Accept 200 (OK), 401 (Unauthorized), or 422 (Validation error - endpoint exists)
    if [ "$data_entry_test" = "200" ] || [ "$data_entry_test" = "401" ] || [ "$data_entry_test" = "422" ]; then
        echo "✓ Data Entry module endpoint reachable"
        check_test 0
    else
        echo "✗ Data Entry module endpoint not working (HTTP $data_entry_test)"
        check_test 1
    fi
else
    echo "✗ Backend not running (skipping test)"
    check_test 1
fi

# ============================================================================
# TEST 7: Telegram module endpoints
# ============================================================================
test_header "Telegram module endpoints accessible"
if check_port 8000; then
    echo "Testing Telegram endpoints..."

    # Test /api/telegram/auth/verify-user (should be in excluded paths)
    telegram_test=$(curl -s -X POST -H "Content-Type: application/json" \
        -d '{"telegram_id":123}' \
        -o /dev/null -w "%{http_code}" \
        http://localhost:8000/api/telegram/auth/verify-user)
    echo "POST /api/telegram/auth/verify-user → HTTP $telegram_test"

    # Accept 200, 404 (not found in DB), 422 (validation error)
    if [ "$telegram_test" = "200" ] || [ "$telegram_test" = "404" ] || [ "$telegram_test" = "422" ]; then
        echo "✓ Telegram module endpoint reachable"
        check_test 0
    else
        echo "✗ Telegram module endpoint not working (HTTP $telegram_test)"
        check_test 1
    fi
else
    echo "✗ Backend not running (skipping test)"
    check_test 1
fi

# ============================================================================
# TEST 8: Auth endpoint (shared)
# ============================================================================
test_header "Auth endpoint accessible (shared module)"
if check_port 8000; then
    echo "Testing Auth endpoint..."

    # Test /api/auth/login (should return 422 without credentials)
    auth_test=$(curl -s -X POST -H "Content-Type: application/json" \
        -o /dev/null -w "%{http_code}" \
        http://localhost:8000/api/auth/login)
    echo "POST /api/auth/login (no body) → HTTP $auth_test"

    # Should return 422 (validation error - missing credentials)
    if [ "$auth_test" = "422" ]; then
        echo "✓ Auth endpoint reachable and validates input"
        check_test 0
    else
        echo "✗ Auth endpoint unexpected response (HTTP $auth_test)"
        check_test 1
    fi
else
    echo "✗ Backend not running (skipping test)"
    check_test 1
fi

# ============================================================================
# TEST 9: Companies endpoint (shared)
# ============================================================================
test_header "Companies endpoint accessible (shared module)"
if check_port 8000; then
    echo "Testing Companies endpoint..."

    # Test /api/companies (needs auth)
    companies_test=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:8000/api/companies)
    echo "GET /api/companies → HTTP $companies_test"

    # Should return 401 (unauthorized - needs JWT)
    if [ "$companies_test" = "401" ]; then
        echo "✓ Companies endpoint reachable and protected by auth"
        check_test 0
    else
        echo "✗ Companies endpoint unexpected response (HTTP $companies_test)"
        check_test 1
    fi
else
    echo "✗ Backend not running (skipping test)"
    check_test 1
fi

# ============================================================================
# TEST 10: API documentation available
# ============================================================================
test_header "API documentation accessible at /docs"
if check_port 8000; then
    echo "Testing /docs endpoint..."

    docs_test=$(curl -s -o /dev/null -w "%{http_code}" http://localhost:8000/docs)
    echo "GET /docs → HTTP $docs_test"

    if [ "$docs_test" = "200" ]; then
        echo "✓ API documentation available at http://localhost:8000/docs"
        check_test 0
    else
        echo "✗ API documentation not accessible (HTTP $docs_test)"
        check_test 1
    fi
else
    echo "✗ Backend not running (skipping test)"
    check_test 1
fi

# ============================================================================
# TEST 11: Configuration files exist
# ============================================================================
test_header "Configuration files properly set up"
echo "Checking configuration files..."

config_ok=true
if [ -f "backend/config.py" ]; then
    echo "✓ backend/config.py exists"
else
    echo "✗ backend/config.py missing"
    config_ok=false
fi

if [ -f "backend/requirements.txt" ]; then
    echo "✓ backend/requirements.txt exists"
else
    echo "✗ backend/requirements.txt missing"
    config_ok=false
fi

if [ -f "backend/.env.example" ]; then
    echo "✓ backend/.env.example exists"
else
    echo "✗ backend/.env.example missing"
    config_ok=false
fi

if $config_ok; then
    check_test 0
else
    check_test 1
fi

# ============================================================================
# TEST 12: Module router factories exist
# ============================================================================
test_header "Module router factories properly created"
echo "Checking router factory files..."

routers_ok=true
for module in "reports" "data-entry" "telegram"; do
    router_file="backend/modules/${module}/routers/__init__.py"
    if [ -f "$router_file" ]; then
        echo "✓ ${module} router factory exists"
        # Check for factory function
        if grep -q "create_.*_router" "$router_file"; then
            echo "  ✓ Factory function found"
        else
            echo "  ✗ Factory function missing"
            routers_ok=false
        fi
    else
        echo "✗ ${module} router factory missing"
        routers_ok=false
    fi
done

if $routers_ok; then
    check_test 0
else
    check_test 1
fi

# ============================================================================
# TEST 13: Frontend proxy configured
# ============================================================================
test_header "Frontend proxy configured to use port 8000"
echo "Checking vite.config.js..."

if [ -f "vite.config.js" ]; then
    echo "✓ vite.config.js exists"

    if grep -q "localhost:8000" vite.config.js; then
        echo "✓ Proxy configured for port 8000"
        check_test 0
    else
        echo "✗ Proxy not configured for port 8000"
        check_test 1
    fi
else
    echo "✗ vite.config.js not found"
    check_test 1
fi

# ============================================================================
# TEST 14: Startup scripts created
# ============================================================================
test_header "New startup scripts created"
echo "Checking startup scripts..."

scripts_ok=true
for script in "start-backend.sh" "start-frontend.sh" "start-prod.sh" "start-test.sh" "status.sh"; do
    if [ -f "$script" ] && [ -x "$script" ]; then
        echo "✓ $script exists and is executable"
    else
        echo "✗ $script missing or not executable"
        scripts_ok=false
    fi
done

if $scripts_ok; then
    check_test 0
else
    check_test 1
fi

# ============================================================================
# SUMMARY
# ============================================================================
echo ""
echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
echo -e "${CYAN}TEST SUMMARY${NC}"
echo -e "${BLUE}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
echo ""
echo -e "Total Tests:  ${BLUE}${TESTS_TOTAL}${NC}"
echo -e "Passed:       ${GREEN}${TESTS_PASSED}${NC}"
echo -e "Failed:       ${RED}${TESTS_FAILED}${NC}"
echo ""

if [ $TESTS_FAILED -eq 0 ]; then
    echo -e "${GREEN}╔══════════════════════════════════════════════════════╗${NC}"
    echo -e "${GREEN}║  ✅ ALL TESTS PASSED! IMPLEMENTATION COMPLETE! ✅    ║${NC}"
    echo -e "${GREEN}╚══════════════════════════════════════════════════════╝${NC}"
    exit 0
else
    echo -e "${YELLOW}╔══════════════════════════════════════════════════════╗${NC}"
    echo -e "${YELLOW}║  ⚠️  SOME TESTS FAILED - REVIEW REQUIRED  ⚠️         ║${NC}"
    echo -e "${YELLOW}╚══════════════════════════════════════════════════════╝${NC}"
    echo ""
    echo -e "${YELLOW}Tip: Start the backend with ./start-dev-unified.sh if not running${NC}"
    exit 1
fi