#!/bin/sh

# This is a small script to open a book from your calibre library
# Using dmenu.

LIBRARY="$HOME/Library"

if [ "$(date -r "$XDG_CACHE_HOME/calibrelib" "+%d-%m-%Y")" = "$(date '+%d-%m-%Y')" ]; then
  books_raw=$(cat "$XDG_CACHE_HOME/calibrelib")
else
  books_raw=$(calibredb --with-library "$LIBRARY" list --for-machine --fields="title,authors,formats")
fi

id="$(echo "$books_raw" |\
  jq -r '.[]|(.id | tostring) + " | " + .title + " | " + .authors' |\
  dmenu -i -l 12 -p "Search Book: " |\
  cut -d "|" -f 1)"

entry="$(echo "$books_raw" | jq -a ".[]|select(.id | contains($id))")"

formats="$(echo "$entry" | \
  jq -r ".formats|.[]" |\
  sed -r "s/.*\.([^\.]*)$/\1/g")"

if [ "$(echo "$formats" | wc -l)" -lt 2 ]; then
  xdg-open "$(echo "$entry" | \
    jq -r ".formats|.[0]")"
  exit
fi

index=$(( $(echo "$formats" | grep -n -F $(echo "$formats" | \
  dmenu -p "Select format:" ) | cut -d ":" -f 1) - 1))

xdg-open "$(echo "$entry" | \
  jq -r ".formats|.[$line]")"