ImageMagick Quote of The Day Generator (ZSH)

image-create.sh

#! /bin/zsh

#First, let's grab a random quote
RANDOM_QUOTE="https://api.quotable.io/quotes/random"
export QUOTE=$(curl -s $RANDOM_QUOTE | jq -r '.[0].content + "\n- " + .[0].author')

#Now, let's get some random colours
COLOUR_GEN=$(curl 'http://colormind.io/api/' --data-binary '{"model":"default"}' | jq '.result | map("rgb(" + join(",") + ")")')
export GRAD_A=$(jq -r '.[0]' <<< $COLOUR_GEN)
export GRAD_B=$(jq -r '.[4]' <<< $COLOUR_GEN)

#ImageMagick scripts don't easily support env-vars, so let's use envsubst instead
MGK_CMD=$(cat qotd.mgk | envsubst)

#Now let's get a temporary file handle for magick-script
magick-script =(echo $MGK_CMD)

qotd.mgk

-size 800x600 
  (
    (
      ( gradient:${GRAD_A}-${GRAD_B} ) #Setup the gradient
      ( xc:none -draw 'roundrectangle 20,20,760,540,25,25' ) #Setup the rounded rect
      -compose copy-opacity -composite #Merge, keeping opacity
    )
    ( +clone -background black -shadow 20x5+5+5 ) +swap #Create a shadow version of the rect, and then swap it to the back
    -compose over -composite #Merge layers together
  )
  (
    ( -background none -font Trebuchet-MS -fill '#eff' -stroke '#aaa' -strokewidth 2 -gravity center caption:"${QUOTE}" ) #Create text
    ( +clone -background black -shadow 40x2+2+2 ) +swap #Create a shadow version of the text, and then swap it to the back
    -compose over -composite -geometry 740x500+10-30 #Merge with resize and offset
  )
  -composite -trim -write qotd.png #Merge everything together and write to disk