#!/bin/bash

# doc gen_cover {
#
# DESCRIPTION
#   gen_cover - Generate cover image 
#
# USAGE
#   gen_cover </path/to/cover/image>
#
# }

gen_cover() {
    local COVER="${1}"
    [[ ! -f "${COVER}" ]] && { convert -size 480x480 xc:white "${COVER}"; local ERROR=1; }
    cat "${COVER}"
    [[ ${ERROR} -eq 1 ]] && return 1
    local IMG_SIZE="$(identify -format "%wx%h" "${COVER}")"
    local IMG_WIDTH=$(echo ${IMG_SIZE} | cut -dx -f1)
    local IMG_HEIGHT=$(echo ${IMG_SIZE} | cut -dx -f2)
    if [[ ${IMG_WIDTH} -lt 480 ]] && [[ ${IMG_HEIGHT} -lt 480 ]]; then return 2; fi
    return 0
}