#!/usr/bin/env bash
set -euo pipefail

# Installer script for Jellyfin HTPC Client on Ubuntu/Debian

INSTALL_DIR="/opt/jellyfin-client"
CONFIG_DIR="/etc/jellyfin-client"
SYSTEMD_SERVICE_FILE="/etc/systemd/system/jellyfin-client.service"

echo "=========================================================="
echo "   Jellyfin HTPC Client & YouTube Receiver Installer     "
echo "=========================================================="

if [ "$EUID" -ne 0 ]; then
  echo "[-] Please run as root (e.g. sudo ./install.sh)"
  exit 1
fi

CURRENT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

echo "[*] Step 1: Installing system dependencies (mpv, yt-dlp, python3)..."
apt-get update -qq
apt-get install -y -qq mpv yt-dlp python3 python3-venv curl

echo "[*] Step 2: Setting up installation directory at ${INSTALL_DIR}..."
mkdir -p "${INSTALL_DIR}"
cp -ru "${CURRENT_DIR}/src" "${INSTALL_DIR}/"
cp -u "${CURRENT_DIR}/requirements.txt" "${INSTALL_DIR}/"
cp -u "${CURRENT_DIR}/config.example.yaml" "${INSTALL_DIR}/"

echo "[*] Step 3: Creating Python virtual environment..."
python3 -m venv "${INSTALL_DIR}/.venv"
"${INSTALL_DIR}/.venv/bin/pip" install --upgrade pip -q
"${INSTALL_DIR}/.venv/bin/pip" install -r "${INSTALL_DIR}/requirements.txt" -q

echo "[*] Step 4: Configuring /etc/jellyfin-client..."
mkdir -p "${CONFIG_DIR}"
if [ ! -f "${CONFIG_DIR}/config.yaml" ]; then
  cp "${CURRENT_DIR}/config.example.yaml" "${CONFIG_DIR}/config.yaml"
  echo "[+] Created default config at ${CONFIG_DIR}/config.yaml"
else
  echo "[i] Existing configuration found at ${CONFIG_DIR}/config.yaml (preserving)"
fi

echo "[*] Step 5: Installing systemd service..."
cp "${CURRENT_DIR}/systemd/jellyfin-client.service" "${SYSTEMD_SERVICE_FILE}"
systemctl daemon-reload

echo ""
echo "=========================================================="
echo "                    Installation Complete!               "
echo "=========================================================="
echo "Next steps:"
echo "1. Edit configuration in: ${CONFIG_DIR}/config.yaml"
echo "   (Set your Jellyfin URL, username, and password)"
echo ""
echo "2. Enable and start the service:"
echo "   sudo systemctl enable --now jellyfin-client"
echo ""
echo "3. Check logs:"
echo "   sudo journalctl -u jellyfin-client -f"
echo ""
echo "4. In Yatse:"
echo "   - Add Media Center -> Kodi -> Enter HTPC IP on port 8080 (for direct YouTube shares & remote)"
echo "   - Or add your Jellyfin server directly in Yatse and select '${CONFIG_DIR}' as remote player!"
echo "=========================================================="