#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

echo "============================================================"
echo "[INFO] Installing Jellyfin on Arch Linux (native, no Docker)"
echo "============================================================"

# Require root or sudo
if [[ "${EUID}" -ne 0 ]]; then
  SUDO="sudo"
else
  SUDO=""
fi

echo "============================================================"
echo "[INFO] Updating package database and system"
echo "============================================================"
$SUDO pacman -Syu --noconfirm

echo "============================================================"
echo "[INFO] Installing Jellyfin packages"
echo "============================================================"
$SUDO pacman -S --noconfirm jellyfin-server jellyfin-web jellyfin-ffmpeg

echo "============================================================"
echo "[INFO] Creating media directories"
echo "============================================================"
$SUDO mkdir -p /srv/media/movies
$SUDO mkdir -p /srv/media/tv
$SUDO mkdir -p /srv/media/music
$SUDO mkdir -p /srv/jellyfin/cache
$SUDO mkdir -p /srv/jellyfin/config

echo "============================================================"
echo "[INFO] Setting ownership"
echo "============================================================"
$SUDO chown -R jellyfin:jellyfin /srv/media
$SUDO chown -R jellyfin:jellyfin /srv/jellyfin

echo "============================================================"
echo "[INFO] Creating systemd override for Jellyfin paths"
echo "============================================================"
$SUDO mkdir -p /etc/systemd/system/jellyfin.service.d
$SUDO tee /etc/systemd/system/jellyfin.service.d/override.conf > /dev/null <<'EOF'
[Service]
Environment="JELLYFIN_DATA_DIR=/srv/jellyfin/config"
Environment="JELLYFIN_CACHE_DIR=/srv/jellyfin/cache"
EOF

echo "============================================================"
echo "[INFO] Reloading systemd and enabling Jellyfin"
echo "============================================================"
$SUDO systemctl daemon-reload
$SUDO systemctl enable --now jellyfin

echo "============================================================"
echo "[INFO] Opening firewall ports if UFW is installed"
echo "============================================================"
if command -v ufw >/dev/null 2>&1; then
  $SUDO ufw allow 8096/tcp
  $SUDO ufw allow 8920/tcp
  $SUDO ufw reload
fi

echo "============================================================"
echo "[INFO] Checking Jellyfin service status"
echo "============================================================"
$SUDO systemctl --no-pager --full status jellyfin || true

IP="$(hostname -I 2>/dev/null | awk '{print $1}')"

echo "============================================================"
echo "[SUCCESS] Jellyfin installation complete"
echo "============================================================"
if [[ -n "${IP:-}" ]]; then
  echo "Open Jellyfin at:"
  echo "  http://${IP}:8096"
else
  echo "Open Jellyfin at:"
  echo "  http://YOUR_SERVER_IP:8096"
fi
echo
echo "Media directories:"
echo "  /srv/media/movies"
echo "  /srv/media/tv"
echo "  /srv/media/music"
echo
echo "Jellyfin config/cache:"
echo "  /srv/jellyfin/config"
echo "  /srv/jellyfin/cache"
echo
echo "Useful commands:"
echo "  systemctl status jellyfin"
echo "  journalctl -u jellyfin -e --no-pager"