#!/usr/bin/env bash
# ═══════════════════════════════════════════════════════════════════════════════
# 🦊 Foxy Dev Team — Service Installer
# ═══════════════════════════════════════════════════════════════════════════════
# Installs systemd user services for:
#   - foxy-api        (FastAPI backend)
#   - foxy-telegram   (Telegram bot v3)
#
# Usage:
#   chmod +x install-services.sh
#   ./install-services.sh
#
# The services run under the current user (systemd --user).
# ═══════════════════════════════════════════════════════════════════════════════

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
SERVICE_DIR="$HOME/.config/systemd/user"
ENV_FILE="$PROJECT_DIR/backend/.env"

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

log()  { echo -e "${CYAN}[INSTALL]${NC} $1"; }
ok()   { echo -e "${GREEN}    ✅${NC} $1"; }
warn() { echo -e "${YELLOW}    ⚠️${NC} $1"; }
err()  { echo -e "${RED}    ❌${NC} $1"; }

# ─── Pre-checks ───────────────────────────────────────────────────────────────

log "🦊 Foxy Dev Team — Installation des services"
echo ""

if ! command -v python3 &>/dev/null; then
    err "python3 non trouvé. Installez Python 3.10+."
    exit 1
fi

if ! command -v uvicorn &>/dev/null; then
    warn "uvicorn non trouvé. Installation des dépendances..."
    pip3 install -r "$PROJECT_DIR/backend/requirements.txt"
fi

if [ ! -f "$ENV_FILE" ]; then
    warn "Fichier .env non trouvé. Copie du template..."
    cp "$PROJECT_DIR/backend/.env.example" "$ENV_FILE"
    warn "⚠️  IMPORTANT : Éditez $ENV_FILE avec vos valeurs réelles !"
fi

# ─── Create systemd directory ─────────────────────────────────────────────────

mkdir -p "$SERVICE_DIR"

# ─── foxy-api.service ─────────────────────────────────────────────────────────

log "Création du service foxy-api..."
cat > "$SERVICE_DIR/foxy-api.service" <<EOF
[Unit]
Description=🦊 Foxy Dev Team — FastAPI Backend
After=network.target
StartLimitIntervalSec=60
StartLimitBurst=3

[Service]
Type=simple
WorkingDirectory=$PROJECT_DIR/backend
EnvironmentFile=$ENV_FILE
ExecStart=$(command -v python3) -m uvicorn app.main:app --host 0.0.0.0 --port 7000
Restart=on-failure
RestartSec=10
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=default.target
EOF
ok "foxy-api.service créé"

# ─── foxy-telegram.service ────────────────────────────────────────────────────

log "Création du service foxy-telegram..."
cat > "$SERVICE_DIR/foxy-telegram.service" <<EOF
[Unit]
Description=🦊 Foxy Dev Team — Telegram Bot v3
After=network.target foxy-api.service
Wants=foxy-api.service
StartLimitIntervalSec=60
StartLimitBurst=3

[Service]
Type=simple
WorkingDirectory=$PROJECT_DIR/scripts
EnvironmentFile=$ENV_FILE
ExecStart=$(command -v python3) $PROJECT_DIR/scripts/foxy-telegram-bot-v3.py
Restart=on-failure
RestartSec=15
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=default.target
EOF
ok "foxy-telegram.service créé"

# ─── Enable and start ─────────────────────────────────────────────────────────

log "Rechargement de systemd..."
systemctl --user daemon-reload
ok "daemon-reload OK"

log "Activation des services (démarrage automatique)..."
systemctl --user enable foxy-api.service
ok "foxy-api activé"
systemctl --user enable foxy-telegram.service
ok "foxy-telegram activé"

# Enable lingering so services survive logout
loginctl enable-linger "$(whoami)" 2>/dev/null || true

log "Démarrage des services..."
systemctl --user start foxy-api.service
ok "foxy-api démarré"

# Wait for API to be ready before starting the bot
sleep 3
systemctl --user start foxy-telegram.service
ok "foxy-telegram démarré"

echo ""
log "═══════════════════════════════════════════════════════════"
log "🦊 Installation terminée !"
echo ""
log "  Commandes utiles :"
echo "    systemctl --user status foxy-api"
echo "    systemctl --user status foxy-telegram"
echo "    journalctl --user -u foxy-api -f"
echo "    journalctl --user -u foxy-telegram -f"
echo ""
log "  Dashboard : http://localhost:5173"
log "  API       : http://localhost:7000"
log "  API Docs  : http://localhost:7000/docs"
log "═══════════════════════════════════════════════════════════"