appicons

#!/bin/zsh

ai_help()
{
	echo "appicons [platform] [input-file] [output-dir]"
	echo ""
	echo "Default output directory is Icons/ or res/ depending on platform"
	echo "For android output, specify path to res/ folder."
	echo ""
	echo "[platform] can be either 'ios' or 'android'"
}


ai_generate_ios()
{
	input=$1;
	output=$2;


	if [ "$output" = "" ]; then
		output="Icons"
	fi
	
	mkdir -p "$output";

	# iPad, iPhone settings
    ai_generate_size "$input" "$output/Icon-29.png" 29;
    ai_generate_size "$input" "$output/Icon-29@2x.png" 58;

    # iPhone, iPad spotlight iOS7
    ai_generate_size "$input" "$output/Icon-40.png" 40;
    ai_generate_size "$input" "$output/Icon-40@2x.png" 80;

    # iPhone icon iOS6
	ai_generate_size "$input" "$output/Icon-57.png" 57;
    ai_generate_size "$input" "$output/Icon-57@2x.png" 114;

    # iPhone icon iOS7
    ai_generate_size "$input" "$output/Icon-60@2x.png" 120;

    # ipad spotlight iOS6
    ai_generate_size "$input" "$output/Icon-50.png" 50;
    ai_generate_size "$input" "$output/Icon-50@2x.png" 100;

    #iPad icon iOS 7
    ai_generate_size "$input" "$output/Icon-72.png" 72;
    ai_generate_size "$input" "$output/Icon-72@2x.png" 144;

    # iPad icon iOS7
    ai_generate_size "$input" "$output/Icon-76.png" 76;
    ai_generate_size "$input" "$output/Icon-76@2x.png" 152;


	# spotlight and settings icons

	ai_generate_size "$input" "$output/Icon-512.png" 512;
	ai_generate_size "$input" "$output/Icon-1024.png" 1024;

}

ai_generate_android()
{

	input=$1;
	output=$2;

	if [ "$output" = "" ]; then
		output="res"
	fi

	mkdir -p "$output";
	mkdir -p "$output/drawable-ldpi" "$output/drawable-mdpi" "$output/drawable-hdpi" "$output/drawable-xhdpi" "$output/drawable-xxhdpi";

	ai_generate_size "$input" "$output/drawable-ldpi/ic_launcher.png" 36;
	ai_generate_size "$input" "$output/drawable-mdpi/ic_launcher.png" 48;
	ai_generate_size "$input" "$output/drawable-hdpi/ic_launcher.png" 72;
	ai_generate_size "$input" "$output/drawable-xhdpi/ic_launcher.png" 96;
	ai_generate_size "$input" "$output/drawable-xxhdpi/ic_launcher.png" 144;


}

# params: from to size
ai_generate_size() 
{
	convert "$1" -resize "${3}x${3}" "$2";

}

if [ "$1" = "" ]; then
	echo "Need at least platform and input file";
	echo "";

	ai_help;

	exit -1;
fi

if [ ! -f $2 ]; then 
	echo "Input file '$2' does not exists";
	exit -1;
fi

platform=$1;
case $platform in

	"ios") ai_generate_ios $2 $3;;
	"android") ai_generate_android $2 $3;;
	*) ai_help;;

esac