#!/bin/bash

echo "======================================"
echo "  SERVER INFORMATION FOR TRAEFIK SETUP"
echo "======================================"
echo ""

# Sistema Operativo
echo "## SISTEMA OPERATIVO"
echo "---"
uname -a
echo ""
if [ -f /etc/os-release ]; then
    cat /etc/os-release
fi
echo ""

# Docker
echo "## DOCKER"
echo "---"
if command -v docker &> /dev/null; then
    echo "Docker instalado: SÍ"
    docker --version
    echo ""
    echo "Docker daemon status:"
    systemctl is-active docker 2>/dev/null || echo "No se puede verificar status (puede requerir sudo)"
    echo ""
    echo "Contenedores corriendo:"
    docker ps --format "table {{.Names}}\t{{.Image}}\t{{.Ports}}" 2>/dev/null || echo "No se puede listar (puede requerir sudo)"
else
    echo "Docker instalado: NO"
fi
echo ""

# Docker Compose
echo "## DOCKER COMPOSE"
echo "---"
if command -v docker-compose &> /dev/null; then
    echo "Docker Compose instalado: SÍ"
    docker-compose --version
elif docker compose version &> /dev/null; then
    echo "Docker Compose (plugin) instalado: SÍ"
    docker compose version
else
    echo "Docker Compose instalado: NO"
fi
echo ""

# Puertos ocupados
echo "## PUERTOS CRÍTICOS"
echo "---"
echo "Verificando puertos 80, 443, 8080..."
for port in 80 443 8080; do
    if command -v ss &> /dev/null; then
        result=$(ss -tuln | grep ":$port " 2>/dev/null)
    else
        result=$(netstat -tuln 2>/dev/null | grep ":$port ")
    fi

    if [ -n "$result" ]; then
        echo "Puerto $port: OCUPADO"
        echo "$result"
    else
        echo "Puerto $port: LIBRE"
    fi
done
echo ""

# Servicios web corriendo
echo "## SERVICIOS WEB DETECTADOS"
echo "---"
if command -v systemctl &> /dev/null; then
    for service in nginx apache2 httpd caddy; do
        if systemctl list-unit-files | grep -q "^$service.service"; then
            status=$(systemctl is-active $service 2>/dev/null)
            echo "$service: $status"
        fi
    done
else
    echo "systemctl no disponible"
fi
echo ""

# Recursos del servidor
echo "## RECURSOS DEL SERVIDOR"
echo "---"
echo "CPU:"
grep -m1 "model name" /proc/cpuinfo 2>/dev/null || echo "No disponible"
echo "Cores: $(nproc 2>/dev/null || echo 'N/A')"
echo ""
echo "Memoria:"
free -h 2>/dev/null || echo "No disponible"
echo ""
echo "Disco:"
df -h / 2>/dev/null || echo "No disponible"
echo ""

# Networking
echo "## NETWORKING"
echo "---"
echo "IPs del servidor:"
if command -v ip &> /dev/null; then
    ip -4 addr show | grep inet | awk '{print $2}' | grep -v "127.0.0.1"
else
    ifconfig 2>/dev/null | grep "inet " | awk '{print $2}' | grep -v "127.0.0.1"
fi
echo ""
echo "Hostname:"
hostname
echo ""

# Dominios/DNS
echo "## DOMINIOS CONFIGURADOS (si existen)"
echo "---"
if [ -f /etc/hosts ]; then
    echo "Entradas relevantes en /etc/hosts:"
    grep -v "^#" /etc/hosts | grep -v "127.0.0.1.*localhost" | grep -v "::1" | grep -v "^$"
fi
echo ""

# Docker networks
echo "## DOCKER NETWORKS"
echo "---"
if command -v docker &> /dev/null; then
    docker network ls 2>/dev/null || echo "No se puede listar (puede requerir sudo)"
else
    echo "Docker no disponible"
fi
echo ""

# Directorio actual y permisos
echo "## INFORMACIÓN DEL DIRECTORIO"
echo "---"
echo "Directorio actual: $(pwd)"
echo "Usuario actual: $(whoami)"
echo "Permisos:"
ls -la $(pwd) 2>/dev/null | head -10
echo ""

# Variables de entorno relevantes
echo "## VARIABLES DE ENTORNO RELEVANTES"
echo "---"
echo "HOME: $HOME"
echo "USER: $USER"
echo "PATH: $PATH"
echo ""

echo "======================================"
echo "  FIN DEL REPORTE"
echo "======================================"