ipfs-screencap

#!/bin/bash

set -e
set -o pipefail

USAGE="USAGE
	$0 [OPTIONS] [<name>]
	publish a screenshot to ipfs, copy gateway link to clipboard

OPTIONS
	-h, --help     - display this help
	-v, --verbose  - print messages for the actions
	-p, --preload  - preload url on the gateways
	-c, --copy     - copy url to clipboard
	-s, --sound    - play a sound when done (useful with -p -c)
"

usage() {
  echo "$USAGE"
  exit 0
}

die() {
  echo >&2 "error: $@"
  exit 1
}

log() {
  if [ $verbose ]; then
    printf >&2 "$@"
  fi
}

# todo: make this cross-platform
case $(uname) in
Darwin)
  clicopy="pbcopy"
  clipaste="pbpaste"
  playsound="afplay /System/Library/Sounds/Ping.aiff"
  ;;
Linux)
  clicopy="xsel -i"
  clipaste="xsel -o"
  playsound='echo -e "\007"'
  ;;
*) ;;
esac

# get user options
while [ $# -gt 0 ]; do
  # get options
  arg="$1"
  shift

  case "$arg" in
  -h|--help) usage ;;
  -v|--verbose) verbose=1 ;;
  -p|--preload) preload=1 ;;
  -c|--copy) copyopt=1 ;;
  -s|--sound) soundopt=1 ;;
  --*) die "unrecognised option: '$arg'\n$USAGE" ;;
  *)
    if [ "$name" == "" ]; then
      name="$arg"
    else
      die "too many arguments\n$USAGE"
    fi
    ;;
  esac
done

if [ "$name" == "" ]; then
  name=screencap.$(date +"%Y-%m-%dT%H:%M:%SZ").png
fi

log "capturing screen..."
if type portable-screencap >/dev/null; then
  img=$(portable-screencap | ipfs add -q)
elif [ -f "./portable-screencap" ]; then
  img=$(./portable-screencap | ipfs add -q)
else
  die "please install portable-screencap"
fi
log " $img\n"


log "constructing dir..."
dir=$(ipfs object new unixfs-dir)
dir=$(ipfs object patch "$dir" add-link "$name" "$img" )
pin=$(ipfs pin add -r "$dir")
log " $dir\n"

out="https://ipfs.io/ipfs/$dir/$name"
echo "$out"

if [ $copyopt ]; then
  log "copying url to clipboard... "
  echo "$out" | $clicopy
  log "copied\n"
fi

if [ $preload ]; then
  log "preloading on the gateways..."
  (curl "$out" 2>/dev/null >/dev/null && log " ok\n") || (true && log " n/a\n")
fi

if [ $soundopt ]; then
  log "playing sound..."
  eval $playsound
  log "ping\n"
fi