#!/usr/bin/env bash
# ──────────────────────────────────────────────────────────────
# Signaturmonster Installer — Linux & macOS
# Usage: curl -fsSL https://raw.githubusercontent.com/choldermann/signaturmonster/main/install.sh | bash
# ──────────────────────────────────────────────────────────────
set -e

RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'
BLUE='\033[0;34m'; BOLD='\033[1m'; NC='\033[0m'

echo ""
echo -e "${BOLD}✉  Signaturmonster Installer${NC}"
echo -e "   Self-hosted SMTP Proxy · signaturmonster.de"
echo ""

# ── Check Docker ──────────────────────────────────────────────
if ! command -v docker &>/dev/null; then
    echo -e "${RED}✗ Docker nicht gefunden.${NC}"
    echo "  Installiere Docker: https://docs.docker.com/get-docker/"
    exit 1
fi
if ! docker compose version &>/dev/null 2>&1; then
    echo -e "${RED}✗ Docker Compose nicht gefunden.${NC}"
    echo "  Docker Desktop oder das Compose-Plugin wird benötigt."
    exit 1
fi
echo -e "${GREEN}✓ Docker $(docker --version | grep -oP '\d+\.\d+\.\d+' | head -1) gefunden${NC}"

# ── Installationsverzeichnis ──────────────────────────────────
DEFAULT_DIR="${HOME}/signaturmonster"
echo ""
read -p "Installationsverzeichnis [${DEFAULT_DIR}]: " CUSTOM_DIR
INSTALL_DIR="${CUSTOM_DIR:-$DEFAULT_DIR}"

mkdir -p "${INSTALL_DIR}/data"
mkdir -p "${INSTALL_DIR}/nginx"
cd "${INSTALL_DIR}"

# ── Konfiguration abfragen ────────────────────────────────────
echo ""
echo -e "${BOLD}SMTP-Relay konfigurieren${NC}"
echo -e "${YELLOW}(Dein eigentlicher ausgehender Mailserver — z.B. Strato, IONOS, Gmail)${NC}"
echo ""
read -p "  RELAY_HOST (z.B. smtp.ionos.de): " RELAY_HOST
read -p "  RELAY_PORT [587]: " RELAY_PORT;   RELAY_PORT="${RELAY_PORT:-587}"
read -p "  RELAY_USER (E-Mail-Adresse):  " RELAY_USER
read -s -p "  RELAY_PASS (Passwort):        " RELAY_PASS; echo ""
echo ""
read -p "  Port für Thunderbird/Mailprogramm [2587]: " SMTP_PORT; SMTP_PORT="${SMTP_PORT:-2587}"
read -p "  Port für das Web-Dashboard      [8080]:  " HTTP_PORT; HTTP_PORT="${HTTP_PORT:-8080}"

# Zufälligen Secret Key generieren
SECRET_KEY=$(LC_ALL=C tr -dc 'A-Za-z0-9!@#%^&*_+=' </dev/urandom 2>/dev/null | head -c 48 || \
             openssl rand -hex 24 2>/dev/null || \
             echo "changeme-$(date +%s)")

# ── Dateien herunterladen ─────────────────────────────────────
BASE="https://raw.githubusercontent.com/choldermann/signaturmonster/main"
echo ""
echo "Lade Konfigurationsdateien von GitHub..."
curl -fsSL "${BASE}/docker-compose.yml" -o docker-compose.yml
curl -fsSL "${BASE}/nginx/nginx.conf"   -o nginx/nginx.conf
echo -e "${GREEN}✓ docker-compose.yml und nginx.conf geladen${NC}"

# ── .env schreiben ────────────────────────────────────────────
cat > .env <<EOF
# Signaturmonster Konfiguration — generiert von install.sh
RELAY_HOST=${RELAY_HOST}
RELAY_PORT=${RELAY_PORT}
RELAY_USER=${RELAY_USER}
RELAY_PASS=${RELAY_PASS}
SMTP_PORT=${SMTP_PORT}
HTTP_PORT=${HTTP_PORT}
SECRET_KEY=${SECRET_KEY}
GITHUB_TOKEN=
LEXWARE_API_TOKEN=
EOF
echo -e "${GREEN}✓ .env erstellt${NC}"

# ── Container starten ─────────────────────────────────────────
echo ""
echo "Lade Container-Images (das kann beim ersten Mal einige Minuten dauern)..."
docker compose pull
docker compose up -d

# ── Ergebnis anzeigen ─────────────────────────────────────────
LOCAL_IP=$(hostname -I 2>/dev/null | awk '{print $1}' || ipconfig getifaddr en0 2>/dev/null || echo "localhost")

echo ""
echo -e "${GREEN}${BOLD}✓ Signaturmonster läuft!${NC}"
echo ""
echo -e "  Dashboard:  ${BLUE}http://${LOCAL_IP}:${HTTP_PORT}${NC}"
echo -e "  SMTP-Port:  ${YELLOW}${LOCAL_IP}:${SMTP_PORT}${NC}  ← in Thunderbird eintragen"
echo ""
echo -e "  Dateien:    ${INSTALL_DIR}"
echo -e "  Logs:       ${YELLOW}docker compose logs -f${NC}  (im Installationsverzeichnis)"
echo ""
echo -e "  Dokumentation: https://signaturmonster.de/docs"
echo ""