Use HDHomeRun EPG with Jellyfin

hdhr-epg.sh

#!/usr/bin/env bash

set -euo pipefail

OUTPUT="/mnt/pool0/docker-vols/jellyfin/config/hdhr-epg.xml"
TMPFILE="$(mktemp)"
IPS=("192.168.1.31" "192.168.1.32")
AUTH=""
SUCCESS=0

log() {
  echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"
}

# Try each device until we get a valid DeviceAuth
for ip in "${IPS[@]}"; do
  log "Trying HDHomeRun at $ip"
  
  AUTH=$(curl -fsS --max-time 5 "http://$ip/discover.json" | jq -r '.DeviceAuth' || true)

  if [[ -n "$AUTH" && "$AUTH" != "null" ]]; then
    log "Got DeviceAuth from $ip"
    
    # Download XMLTV data
    if curl -fsS --max-time 20 \
      -H 'Accept-Encoding: gzip' --compressed \
      "https://api.hdhomerun.com/api/xmltv?DeviceAuth=$AUTH" \
      -o "$TMPFILE"; then
      
      # Validate XML
      if xmllint --noout "$TMPFILE" 2>/dev/null; then
        log "XML validated successfully"
        SUCCESS=1
        break
      else
        log "Invalid XML from $ip, trying next..."
      fi
    else
      log "Failed to download XML from API using auth from $ip"
    fi
  else
    log "Failed to get DeviceAuth from $ip"
  fi
done

# Replace the file only if everything succeeded
if [[ $SUCCESS -eq 1 ]]; then
  mv "$TMPFILE" "$OUTPUT"
  log "EPG successfully updated at $OUTPUT"
else
  log "Failed to update EPG from all sources"
  rm -f "$TMPFILE"
  exit 1
fi