Wrapper script to play a file with vlc and resume from last position intended for use with https://github.com/hq6/sq

resume

#!/bin/bash
# SUMMARY: Resume playback at given time or time last saved
# HELP:
# USAGE
#    sq resume <media_file> [timestamp]

if [[ $# -lt 1 ]]; then
  exec sq help resume
fi

MEDIA_FILE="$1"
ROOT_DIR="$HOME/.local/share/sq-resume"
mkdir -p "$ROOT_DIR"

pos_file_name="$ROOT_DIR/$(echo "$MEDIA_FILE" | md5sum | awk '{print $1}').timestamp"

if [[ $# -gt 1 ]]; then
  LAST_TIME="$2"
else
  # Look for LAST_TIME from a file.
  if [[ ! -f "$pos_file_name" ]]; then
    LAST_TIME=0
  else
    >&2 echo "Resuming from $pos_file_name"
    LAST_TIME="$(tail -n 1 "$pos_file_name")"
  fi
fi

# Playback with store
vlc_output_on_quit() {
  local MEDIA_FILE="$1"
  local start_time="$2"
  local last_time="$start_time"
  local current_time

  re='^[0-9]+$'
  while read current_line; do
    current_time=$(awk '{if ($1 == ">" && $NF > 1) printf "%d", $2}' <<<"$current_line")
    if [[ $current_time =~ $re ]]; then
      last_time=$current_time
    fi
  done < <(
  while true; do
    sleep 0.5
    echo "get_time"
  done |\
  vlc \
  --fullscreen \
  --start-time="$start_time" \
  --extraintf rc \
  "$MEDIA_FILE"
  )
  echo $last_time
}

seconds="$(echo "$LAST_TIME" | awk -F: '{ print $NF + ( NF > 1 ? $(NF - 1) * 60 : 0) + (NF > 2 ? ($(NF - 2) * 3600) : 0) }')"
vlc_output_on_quit "$MEDIA_FILE" "$seconds" >> "$pos_file_name"
tail -n1 "$pos_file_name"