#!/usr/bin/env bash
# setup-system — Parte 1: prepara maquina + sobe master-dashboard (porta 8090)
#
# Roda 1x por maquina. Detecta o template a partir do diretorio do proprio
# script, entao funciona com qualquer nome de pasta (yt-pub-livesx, etc).
set -euo pipefail

TEMPLATE_DIR="$(cd "$(dirname "$0")/.." && pwd)"
MASTER_PORT=8090
MASTER_SERVICE="yt-master-dashboard"

echo "==> yt-pub-lives — Setup do sistema"
echo "    Template: $TEMPLATE_DIR"
echo ""

# 1. Dependencias do sistema
echo "==> Verificando dependencias..."
MISSING=()
for tool in python3 ffmpeg curl yt-dlp deno; do
  if command -v "$tool" >/dev/null; then
    echo "    $tool: OK"
  else
    echo "    $tool: FALTA"
    MISSING+=("$tool")
  fi
done
if [ ${#MISSING[@]} -gt 0 ]; then
  echo ""
  echo "ERRO: instale antes:"
  for t in "${MISSING[@]}"; do
    case "$t" in
      yt-dlp) echo "    pip3 install --user yt-dlp" ;;
      deno)   echo "    curl -fsSL https://deno.land/install.sh | sh" ;;
      *)      echo "    sudo apt-get install $t" ;;
    esac
  done
  exit 1
fi

# 2. Pacotes Python
echo "==> Pacotes Python..."
pip3 install --user --quiet -r "$TEMPLATE_DIR/requirements.txt"
python3 -c "import cryptography, anthropic" \
  && echo "    cryptography + anthropic: OK"

# 3. PATH
BIN_DIR="$HOME/.local/bin"
mkdir -p "$BIN_DIR"
if ! echo "$PATH" | grep -q "$BIN_DIR"; then
  echo ""
  echo "==> Adicione ao seu ~/.bashrc:"
  echo "    export PATH=\"\$HOME/.local/bin:\$PATH\""
fi

# 4. Master-dashboard — verifica conflitos antes de subir
echo ""
echo "==> Master-dashboard (porta $MASTER_PORT)..."
if systemctl --user is-active --quiet "$MASTER_SERVICE" 2>/dev/null; then
  echo "ERRO: service '$MASTER_SERVICE' ja esta ativo."
  echo "      Pare com: systemctl --user stop $MASTER_SERVICE"
  exit 1
fi
if ss -ltn 2>/dev/null | grep -q ":$MASTER_PORT "; then
  echo "ERRO: porta $MASTER_PORT ja em uso por outro processo."
  echo "      Verifique com: ss -ltnp | grep :$MASTER_PORT"
  exit 1
fi

# 5. Gera service file com paths do TEMPLATE_DIR detectado
SVC="$HOME/.config/systemd/user/$MASTER_SERVICE.service"
mkdir -p "$(dirname "$SVC")"
cat > "$SVC" <<EOF
[Unit]
Description=YT Pub Master Dashboard (all instances)
After=network.target

[Service]
Type=simple
WorkingDirectory=$TEMPLATE_DIR/master-dashboard
ExecStart=/usr/bin/python3 $TEMPLATE_DIR/master-dashboard/server.py
Restart=always
RestartSec=10
Environment=PATH=/usr/bin:$HOME/.local/bin
Environment=GWS_CONFIG_DIR=$TEMPLATE_DIR/config
Environment=PYTHONUNBUFFERED=1

[Install]
WantedBy=default.target
EOF

systemctl --user daemon-reload
systemctl --user enable --now "$MASTER_SERVICE"

echo ""
echo "==> Master-dashboard rodando: http://localhost:$MASTER_PORT"
echo "==> Proximo passo: criar primeiro canal:"
echo "    $TEMPLATE_DIR/scripts/setup-canal"