#!/bin/env nu

export def main [] {
  error make {msg: "missing subcommand"}
}

export def `main add-frame` [src: string, dst: string] {
  try {
    let avg = ( convert $src -resize 1x1! -format "%[fx:int(255*r+.5)],%[fx:int(255*g+.5)],%[fx:int(255*b+.5)]" info:- )
    ( magick $src 
      -bordercolor white
      -border 100x100
      -bordercolor $"srgb\(($avg)\)"
      -border 5%x5%
      -set option:wd "%[fx:(16/9)>(w/h)?(16/9*h):w]"
      -set option:ht "%[fx:(16/9)>(w/h)?h:(w/(16/9))]"
      -background $"srgb\(($avg)\)"
      -gravity center
      -extent "%[wd]x%[ht]"
      $dst
    )
  } catch {|e| 
    print -e $e
  }
}