From 1ef7f88b0a6999488473791b0eb4557dc530f98a Mon Sep 17 00:00:00 2001
From: denshooter <dennis@konkol.net>
Date: Sun, 19 Oct 2025 22:02:11 +0200
Subject: [PATCH] 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/fix-connection.sh | 138 ++++++++++++++++++++++++++++++++++++++
 scripts/health-check.sh   | 137 +++++++++++++++++++++++++++++++++++++
 2 files changed, 275 insertions(+)
 create mode 100755 scripts/fix-connection.sh
 create mode 100755 scripts/health-check.sh

diff --git a/scripts/fix-connection.sh b/scripts/fix-connection.sh
new file mode 100755
index 0000000..8822269
--- /dev/null
+++ b/scripts/fix-connection.sh
@@ -0,0 +1,138 @@
+#!/bin/bash
+
+# Fix Connection Issues Script
+# This script diagnoses and fixes common connection issues
+
+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
+
+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 "🔧 Diagnosing and fixing connection issues..."
+
+# Check if containers are running
+if ! docker ps | grep -q portfolio-app; then
+    error "Portfolio app container is not running"
+    log "Starting containers..."
+    docker-compose up -d
+    sleep 30
+fi
+
+# Check container logs for errors
+log "📋 Checking container logs for errors..."
+if docker logs portfolio-app --tail 20 | grep -i error; then
+    warning "Found errors in application logs"
+    docker logs portfolio-app --tail 50
+fi
+
+# Check if port 3000 is accessible
+log "🔍 Checking port 3000 accessibility..."
+
+# Method 1: Check from inside container
+log "Testing from inside container..."
+if docker exec portfolio-app curl -f http://localhost:3000/api/health > /dev/null 2>&1; then
+    success "Application responds from inside container"
+else
+    error "Application not responding from inside container"
+    docker logs portfolio-app --tail 20
+fi
+
+# Method 2: Check port binding
+log "Checking port binding..."
+if docker port portfolio-app 3000; then
+    success "Port 3000 is properly bound"
+else
+    error "Port 3000 is not bound"
+fi
+
+# Method 3: Check if application is listening
+log "Checking if application is listening..."
+if docker exec portfolio-app netstat -tlnp | grep -q ":3000"; then
+    success "Application is listening on port 3000"
+else
+    error "Application is not listening on port 3000"
+    docker exec portfolio-app netstat -tlnp
+fi
+
+# Method 4: Try external connection
+log "Testing external connection..."
+if timeout 5 curl -f http://localhost:3000/api/health > /dev/null 2>&1; then
+    success "External connection successful"
+else
+    warning "External connection failed - this might be normal if behind reverse proxy"
+    
+    # Check if there's a reverse proxy running
+    if netstat -tlnp | grep -q ":80\|:443"; then
+        log "Reverse proxy detected - this is expected behavior"
+        success "Application is running behind reverse proxy"
+    else
+        error "No reverse proxy detected and external connection failed"
+        
+        # Try to restart the container
+        log "Attempting to restart portfolio container..."
+        docker restart portfolio-app
+        sleep 10
+        
+        if timeout 5 curl -f http://localhost:3000/api/health > /dev/null 2>&1; then
+            success "External connection successful after restart"
+        else
+            error "External connection still failing after restart"
+        fi
+    fi
+fi
+
+# Check network configuration
+log "🌐 Checking network configuration..."
+docker network ls | grep portfolio || {
+    warning "Portfolio network not found"
+    log "Creating portfolio network..."
+    docker network create portfolio_net
+}
+
+# Check if containers are on the right network
+if docker inspect portfolio-app | grep -q portfolio_net; then
+    success "Container is on portfolio network"
+else
+    warning "Container might not be on portfolio network"
+fi
+
+# Final verification
+log "🔍 Final verification..."
+if docker exec portfolio-app curl -f http://localhost:3000/api/health > /dev/null 2>&1; then
+    success "✅ Application is healthy and responding"
+    
+    # Show final status
+    log "📊 Final container status:"
+    docker ps --format "table {{.Names}}\t{{.Status}}\t{{.Ports}}" | grep portfolio
+    
+    log "🌐 Application endpoints:"
+    log "  - Health: http://localhost:3000/api/health"
+    log "  - Main: http://localhost:3000/"
+    log "  - Admin: http://localhost:3000/manage"
+    
+    success "🎉 Connection issues resolved!"
+else
+    error "❌ Application is still not responding"
+    log "Please check the logs: docker logs portfolio-app"
+    exit 1
+fi
diff --git a/scripts/health-check.sh b/scripts/health-check.sh
new file mode 100755
index 0000000..8573764
--- /dev/null
+++ b/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