jwdl

#!/bin/bash
# https://www.majlovesreg.one/tag/code/

source $HOME/bin/maj-source

pubs=(\
  "osg" \
  "sjjm" \
  "sjjc" \
  "sjji" \
  "pksjj" \
)

pubs_desc=(\
  "Original Songs" \
  "Sing Out Joyfully—Meetings" \
  "Sing Out Joyfully—Vocals" \
  "Sing Out Joyfully—Instrumentals" \
  "Sing Out Joyfully—Children" \
)

dir_save=(\
  "/home/maj/Music/Watchtower Music/Original Songs" \
  "/home/maj/Music/Watchtower Music/“Sing out Joyfully”—Meetings" \
  "/home/maj/Music/Watchtower Music/“Sing out Joyfully”—Vocals" \
  "/home/maj/Music/Watchtower Music/“Sing out Joyfully”—Instrumentals" \
  "/home/maj/Music/Watchtower Music/“Sing out Joyfully”—Children" \
)

[ -z "${1}" ] && errx "usage: $(basename ${0})  <dl type>  [language code]\n\n\
Types:\n\n\
$(for a in ${!pubs[@]}; do echo ${pubs[${a}]}  -  ${pubs_desc[${a}]}; done)\n\
all  -  download all music files\n" 1

[ "${1}" = "all" ] && pub="all" || pub=""

for b in ${!pubs[@]}; do
  [ "${1}" = "${pubs[${b}]}" ] && {
    pub="${pubs[${b}]}"
    dir="${dir_save[${b}]}"
  }
done

[ -z "${pub}" ] && errx "usage: $(basename ${0})  <dl type>  [language code]\n\n\
Types:\n\n\
$(for a in ${!pubs[@]}; do echo ${pubs[${a}]}  -  ${pubs_desc[${a}]}; done)\n\
all  -  download all music files\n" 2

for d in ${!dir_save[@]}; do
  [ -d "${dir_save[${d}]}" ] || {
    mkdir -p "${dir_save[${d}]}"
    echo
    echo "Created directory: ${dir_save[${d}]}"
    echo
  }
done

[ -z "${2}" ] && lang='E' || lang="${2}"

################################################################################

function dl {
  dl_json="https://b.jw-cdn.org/apis/pub-media/GETPUBMEDIALINKS?output=json&pub=${1}&fileformat=MP3%2CAAC&alllangs=0&langwritten=${lang}"
  tmp_json="/tmp/${1}_$(date '+%F_%T').json"

  curl -so "${tmp_json}" "${dl_json}" || errx "Download from ${dl_json} failed." 10

  readarray -t url   < <(cat "${tmp_json}" | jq -r ".files.${lang}.MP3[].file.url")
  readarray -t title < <(cat "${tmp_json}" | jq -r ".files.${lang}.MP3[].title")

  [ "${#url[@]}" -ne "${#title[@]}" ] && errx "Titles and URL count do not match." 11

  cd "${2}"

  echo "Processing pub: ${1}, lang: ${lang}, file: ${tmp_json} ..."
  echo

  for n in ${!url[@]}; do
    filename="${2}/$(basename ${url[${n}]} | grep -o '^[^\.]\+') ($(echo ${title[${n}]} | sed 's/'\''/’/g' | sed 's/^"/“/g' | sed 's/\. "/. “/g' | sed 's/"$/”/g')).mp3"
    [ ! -f  "${filename}" ] && echo "${url[${n}]}" | grep -q '\.mp3$' && {
      printf "Downloading and saving to \"${filename}\" ... "
      curl -so "${filename}" "${url[${n}]}"
      echo-g "done"
    }
  done

  echo
}

################################################################################

[ "${pub}" = "all" ] && {
  for c in ${!pubs[@]}; do
    dl "${pubs[${c}]}" "${dir_save[${c}]}"
  done
} || {
  dl "${pub}" "${dir}"
}