A shell function to pull images and compare

pulls.sh

# pull last modified (n) screenshots
function pulls() {
    DEFAULT_COUNT='2'
    COUNT="${1:-$DEFAULT_COUNT}"
    echo "⬇️  Pulling $COUNT screenshot(s)"

    # Get the list of last modified screenshots
    local screenshots=(`adb shell ls -t /storage/emulated/0/Pictures/Screenshots/ | head -n "$COUNT"`)

    if [ ${#screenshots[@]} -eq 0 ]; then
        echo "❌ No screenshots found."
    else
        # Pull the screenshots from the device
        printf "%s\n" "${screenshots[@]}" | xargs -I {} adb pull "/storage/emulated/0/Pictures/Screenshots/"{} .

        spliceValue=100
        fontSize=44
        spacing=20

        if [[ $COUNT -eq 2 ]]; then
            # Compare and join the two screenshots
            echo "🔍 Comparing ${screenshots[1]} with ${screenshots[2]}"
            compare "${screenshots[1]}" "${screenshots[2]}" diff.png

            # Annotate and concatenate the screenshots horizontally
            convert \
            \( "${screenshots[1]}" -gravity south -background white -splice 0x$spliceValue -gravity south -pointsize $fontSize -annotate +0+30 "${screenshots[1]}" \) \
            \( -size ${spacing}x1 xc:white \) \
            \( "${screenshots[2]}" -gravity south -background white -splice 0x$spliceValue -gravity south -pointsize $fontSize -annotate +0+30 "${screenshots[2]}" \) \
            \( -size ${spacing}x1 xc:white \) \
            \( "diff.png" -gravity south -background white -splice 0x$spliceValue -gravity south -pointsize $fontSize -annotate +0+30 "diff.png" \) \
            +append -border $spacing -bordercolor white diff.png

        else
            # Join multiple screenshots
            # Initialize the command variable
            command="convert "

            # Iterate over the image filenames
            for filename in "${screenshots[@]}"
            do
                # Add the image and its filename annotation to the command
                command+="\( \"$filename\" -gravity south -background white -splice 0x$spliceValue -gravity south -pointsize $fontSize -annotate +0+30 \"$filename\" \) "

                # Add the spacing image between each image
                command+="\( -size ${spacing}x1 xc:white \) "
            done

            # Combine the images, remove the extra spacing at the end, and add borders
            command+="+append -border $spacing -bordercolor white diff.png"

            # Execute the command
            eval $command
        fi

        # resize	
	sips -Z 1000 diff.png
		
        echo "✅ Screenshots processed successfully. Opening diff.png."
        open diff.png
	fi
}