#!/bin/bash
# ──────────────────────────────────────────────
# d0a1 pack — Open WebUI
# Chat de IA privado. Sin cuenta, sin API key.
# ──────────────────────────────────────────────
# Local:  ./deploy.sh local    → http://localhost:3000
# VPS:    ./deploy.sh vps      → http://TU_IP:3000
# Stop:   ./deploy.sh stop
# ──────────────────────────────────────────────
set -e

GREEN='\033[0;32m'
CYAN='\033[0;36m'
YELLOW='\033[0;33m'
RED='\033[0;31m'
BOLD='\033[1m'
NC='\033[0m'

MODE="${1:-local}"
SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
COMPOSE_FILE="$SCRIPT_DIR/docker-compose.yml"

echo ""
echo -e "${BOLD}${CYAN}╔══════════════════════════════════════════╗${NC}"
echo -e "${BOLD}${CYAN}║  d0a1 pack — Open WebUI                 ║${NC}"
echo -e "${BOLD}${CYAN}║  Chat de IA privado. Sin cuenta, sin API key. ║${NC}"
echo -e "${BOLD}${CYAN}╚══════════════════════════════════════════╝${NC}"
echo ""

# ── Stop mode ───────────────────────────────
if [ "$MODE" = "stop" ]; then
    echo -e "${YELLOW}Parando...${NC}"
    docker compose -f "$COMPOSE_FILE" down
    echo -e "${GREEN}✓ Parado.${NC}"
    exit 0
fi

# ── Check Docker ────────────────────────────
if ! command -v docker &>/dev/null; then
    echo -e "${RED}✗ Docker no está instalado.${NC}"
    echo ""
    echo "Instálalo: curl -fsSL https://get.docker.com | sh"
    exit 1
fi
if ! docker compose version &>/dev/null; then
    echo -e "${RED}✗ Docker Compose v2 no disponible.${NC}"
    exit 1
fi
echo -e "${GREEN}✓${NC} Docker: $(docker compose version --short 2>/dev/null || echo 'OK')"

# ── Check RAM ───────────────────────────────
TOTAL_RAM_KB=$(grep MemTotal /proc/meminfo 2>/dev/null | awk '{print $2}' || echo "0")
TOTAL_RAM_GB=$((TOTAL_RAM_KB / 1024 / 1024))
if [ "$TOTAL_RAM_GB" -lt 3 ]; then
    echo -e "${RED}✗ Se necesitan 4 GB de RAM mínimo (detectado: ${TOTAL_RAM_GB} GB).${NC}"
    exit 1
fi
echo -e "${GREEN}✓${NC} RAM: ${TOTAL_RAM_GB} GB"

# ── Auto-detect ports ───────────────────────
find_free_port() {
    local port=$1
    local max_port=$((port + 20))
    while [ "$port" -le "$max_port" ]; do
        if ! ss -tlnp 2>/dev/null | grep -q ":${port} " && ! netstat -tlnp 2>/dev/null | grep -q ":${port} "; then
            echo "$port"
            return 0
        fi
        port=$((port + 1))
    done
    echo "$1"
    return 1
}

export OLLAMA_PORT=$(find_free_port 11434)
export WEBUI_PORT=$(find_free_port 3000)

# ── Mode info ───────────────────────────────
if [ "$MODE" = "local" ]; then
    echo -e "${YELLOW}Modo:${NC} local (tu ordenador)"
    echo -e "  URL: ${CYAN}http://localhost:${WEBUI_PORT}${NC}"
elif [ "$MODE" = "vps" ]; then
    echo -e "${YELLOW}Modo:${NC} VPS (accesible desde fuera)"
    echo -e "  URL: ${CYAN}http://$(hostname -I 2>/dev/null | awk '{print $1}' || echo 'TU_IP'):${WEBUI_PORT}${NC}"
    echo ""
    echo -e "  ${BOLD}¿No tienes VPS?${NC} Consigue uno con descuento:"
    echo -e "  ${CYAN}https://d0a1.es/go/vultr/${NC}  — Vultr"
    echo -e "  ${CYAN}https://d0a1.es/go/digitalocean/${NC}  — DigitalOcean (\$200 credit)"
else
    echo -e "${RED}Modo desconocido: $MODE${NC}"
    echo "Usa: ./deploy.sh local | vps | stop"
    exit 1
fi

if [ "$OLLAMA_PORT" != "11434" ]; then
    echo -e "${YELLOW}⚠ Puerto 11434 ocupado, usando ${OLLAMA_PORT}${NC}"
fi
if [ "$WEBUI_PORT" != "3000" ]; then
    echo -e "${YELLOW}⚠ Puerto 3000 ocupado, usando ${WEBUI_PORT}${NC}"
fi
echo ""

# ── Deploy ──────────────────────────────────
echo -e "${YELLOW}Descargando contenedores (2-3 min la primera vez)...${NC}"
docker compose -f "$COMPOSE_FILE" up -d

# ── Pull model ───────────────────────────────
echo -e "${YELLOW}Descargando modelo de IA (llama3.2:3b, ~2 GB)...${NC}"
MAX_WAIT=60
WAITED=0
until docker exec d0a1-ollama ollama ps &>/dev/null; do
    sleep 2
    WAITED=$((WAITED + 2))
    if [ "$WAITED" -ge "$MAX_WAIT" ]; then
        echo -e "${RED}✗ Ollama no arrancó. Revisa: docker logs d0a1-ollama${NC}"
        exit 1
    fi
done
docker exec d0a1-ollama ollama pull llama3.2:3b

# ── Done ────────────────────────────────────
echo ""
echo -e "${BOLD}${GREEN}¡Listo! Tu IA está corriendo.${NC}"
echo ""
if [ "$MODE" = "local" ]; then
    echo -e "  ${BOLD}Abre:${NC} ${CYAN}http://localhost:${WEBUI_PORT}${NC}"
else
    echo -e "  ${BOLD}Abre:${NC} ${CYAN}http://$(hostname -I 2>/dev/null | awk '{print $1}' || echo 'TU_IP'):${WEBUI_PORT}${NC}"
fi
echo ""
echo -e "  ${BOLD}Modelos alternativos:${NC}"
echo "  docker exec d0a1-ollama ollama pull qwen3:4b      # Mejor en español + razonamiento (4 GB RAM)"
echo "  docker exec d0a1-ollama ollama pull qwen3:8b      # Más calidad (6 GB RAM)"
echo ""
echo -e "  ${BOLD}Parar:${NC} ./deploy.sh stop"
echo -e "  ${BOLD}¿Quieres más?${NC} ${CYAN}https://d0a1.es/packs/${NC}"
echo ""