feat: add diagnostic and health check scripts

- Add comprehensive health check script
- Add connection issue diagnostic script
- Improve health check reliability
- Better error handling and reporting

scripts/health-check.sh

@@ -0,0 +1,137 @@
+#!/bin/bash
+
+# Comprehensive Health Check Script for Portfolio Application
+# This script checks both internal container health and external accessibility
+
+set -e
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+# Logging functions
+log() {
+    echo -e "${BLUE}[$(date +'%Y-%m-%d %H:%M:%S')]${NC} $1"
+}
+
+error() {
+    echo -e "${RED}[ERROR]${NC} $1" >&2
+}
+
+success() {
+    echo -e "${GREEN}[SUCCESS]${NC} $1"
+}
+
+warning() {
+    echo -e "${YELLOW}[WARNING]${NC} $1"
+}
+
+log "🔍 Running comprehensive health checks..."
+
+# Check if Docker is running
+if ! docker info > /dev/null 2>&1; then
+    error "Docker is not running"
+    exit 1
+fi
+
+# Check container status
+log "📊 Container status:"
+docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Command}}\t{{.Status}}\t{{.Ports}}" | grep portfolio || {
+    error "No portfolio containers found"
+    exit 1
+}
+
+# Check if containers are running
+if ! docker ps | grep -q portfolio-app; then
+    error "Portfolio app container is not running"
+    exit 1
+fi
+
+if ! docker ps | grep -q portfolio-postgres; then
+    error "PostgreSQL container is not running"
+    exit 1
+fi
+
+if ! docker ps | grep -q portfolio-redis; then
+    error "Redis container is not running"
+    exit 1
+fi
+
+# Check application health from inside the container
+log "🏥 Checking application container..."
+HEALTH_RESPONSE=$(docker exec portfolio-app curl -s http://localhost:3000/api/health 2>/dev/null || echo "FAILED")
+
+if [[ "$HEALTH_RESPONSE" == "FAILED" ]]; then
+    error "Application health check failed - container not responding"
+    exit 1
+fi
+
+# Parse health response
+if echo "$HEALTH_RESPONSE" | grep -q '"status":"healthy"'; then
+    success "Application health check passed!"
+    echo "$HEALTH_RESPONSE"
+else
+    error "Application health check failed - unhealthy status"
+    echo "$HEALTH_RESPONSE"
+    exit 1
+fi
+
+# Check external accessibility
+log "🌐 Checking external accessibility..."
+
+# Try multiple methods to check if the app is accessible
+EXTERNAL_ACCESSIBLE=false
+
+# Method 1: Check if port 3000 is bound and accessible
+if netstat -tlnp 2>/dev/null | grep -q ":3000 "; then
+    log "Port 3000 is bound"
+    EXTERNAL_ACCESSIBLE=true
+fi
+
+# Method 2: Try to connect to the application
+if curl -f http://localhost:3000/api/health > /dev/null 2>&1; then
+    log "Application is accessible via localhost:3000"
+    EXTERNAL_ACCESSIBLE=true
+fi
+
+# Method 3: Check Docker port mapping
+if docker port portfolio-app 3000 > /dev/null 2>&1; then
+    log "Docker port mapping is active"
+    EXTERNAL_ACCESSIBLE=true
+fi
+
+if [ "$EXTERNAL_ACCESSIBLE" = true ]; then
+    success "✅ Main page is accessible!"
+else
+    warning "⚠️  Main page accessibility check inconclusive"
+    log "This might be normal if running behind a reverse proxy"
+fi
+
+# Check database connectivity
+log "🗄️  Checking database connectivity..."
+if docker exec portfolio-postgres pg_isready -U portfolio_user -d portfolio_db > /dev/null 2>&1; then
+    success "Database is healthy"
+else
+    error "Database health check failed"
+    exit 1
+fi
+
+# Check Redis connectivity
+log "🔴 Checking Redis connectivity..."
+if docker exec portfolio-redis redis-cli ping > /dev/null 2>&1; then
+    success "Redis is healthy"
+else
+    error "Redis health check failed"
+    exit 1
+fi
+
+# Final status
+success "🎉 All health checks passed!"
+log "Application is running and healthy"
+log "Container status:"
+docker ps --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}" | grep portfolio
+
+exit 0