#!/bin/bash

# create_POV_data_files

cd "$(dirname "$0")"
clear
echo ""; echo "Welcome! Let's make some POV images!"; echo ""
# replace whitespace in source filename with underscores
find . -type f -name "* *" | while read file; do mv "$file" ${file// /_}; done
have_logo=0
height_only=0
preset=0
# get quantity of .png files and build array to print if multiples
files=$(ls 2>/dev/null -Ubad1 -- *.png | wc -l)
pngs=$(find . -type f -name '*.png')

if [ "$files" -ge 2 ]; then
	echo "OOPS! Too many .png image files found!"
	echo ""
	for strip in ${pngs[@]}; do
		no_path="${strip##*/}"
		echo ${no_path[*]}
	done
	echo ""
	echo "There needs to be only ONE source .png image in the pov_tools folder."
	echo ""
	echo "Type 'r' - to remove ALL FILES with 'preview' in the name. "
	echo "    If the additional filenames do not contain 'preview',"
	echo "    manually delete all files except your source image."
	echo ""
	echo "Type q to quit."
	read -p $'Press ENTER to start over.\n' fix
	case $fix in
		r) rm *preview*.png;
			echo ""
			echo "Files containing *preview* deleted if they existed"
			read -n 1 -r -s -p $'Press any key to continue.\n'
			exec "./create_POV_data_files";;
		q) exit;;
		*) exec "./create_POV_data_files";;
	esac
fi

if [ "$files" -lt 1 ]; then
	echo "OOPS! No .png image files found!"
	echo ""
	echo "Let's download an example Star Wars Logo for you to try :)"
	echo "DOWNLOADING: 1024px-Star_Wars_Logo.svg.png .........."
	echo ""
	wget https://upload.wikimedia.org/wikipedia/commons/thumb/6/6c/Star_Wars_Logo.svg/1024px-Star_Wars_Logo.svg.png&>/dev/null &
	logo=$"1024px-Star_Wars_Logo.svg.png"
	have_logo=1
	echo "Press q to quit, or"
	read -n 1 -r -s -p $'press any other key to continue...\n' delay
	if [ "$delay" = "q" ]; then exit; fi
fi

echo ""
case $have_logo in
	1) echo "Found the following source image file: $logo"
		echo ""
		sourcebase="${logo%.*}"
		image="$logo";;
	0)  source=$(find . -type f -name '*.png')
		for strip in ${source[@]}; do
			sourcename="${strip##*/}"
			sourcebase="${sourcename%.*}"
		done
		echo "Found the following source image file: ${sourcename[*]}"
		echo ""
		# check for multiples and for filename contains 'preview'
		recheck=$(ls 2>/dev/null -Ubad1 -- *.png | wc -l)
		if [[ $sourcename == *"preview"* ]]; then
			echo "OOPS! Source file name can not contain 'preview'."
			echo "Please use a different file name."
			echo "Press q to quit, or"
			read -n 1 -r -s -p $'press any key to try again.\n' retry
			if [ "$retry" = "q" ]; then exit; fi
			exec "./create_POV_data_files"
		elif [ $recheck -ge 2 ]; then
			exec "./create_POV_data_files"
		fi
		image="$sourcename";;
esac

valid_option=0

while [[ "$valid_option" != 1 ]]
do
    echo "Please select the settings you want to create the POV image with: "
    echo "1 - Preset 1 (HEIGHT=144, LENGTH=39, OFFSET=18)"
    echo "2 - Preset 2 (HEIGHT=97,  LENGTH=63, OFFSET=50)"
    echo "3 - Preset 3 (HEIGHT=72,  LENGTH=50, OFFSET=15)"
    echo "4 - Preset 4 (HEIGHT=72,  LENGTH=50, OFFSET=39)"
    echo "5 - Height entry only"
    echo "6 - Custom options"
    echo "q - to quit"
	read option
	case $option in
		"")	echo "! Some option is needed. Please try again"; echo "";;
		1)	make IMAGE=$image OPTIONS="--height=144 --length=39 --offset=18"; HEIGHT=144 preset=1 valid_option=1;;
		2)	make IMAGE=$image OPTIONS="--height=97 --length=63 --offset=50"; HEIGHT=97 preset=1 valid_option=1;;
		3)	make IMAGE=$image OPTIONS="--height=72 --length=50 --offset=15"; HEIGHT=72 preset=1 valid_option=1;;
		4)  make IMAGE=$image OPTIONS="--height=72 --length=50 --offset=39"; HEIGHT=72 preset=1 valid_option=1;;
		5)  height_only=1; valid_option=1;;
		6)  valid_option=1;;
#		7) ------ ADDITIONAL USER PRESETS CAN BE ADDED HERE LIKE THIS-------
#		8) make IMAGE=$image OPTIONS="--height=H --length=L --offset=O"; HEIGHT=H preset=1 valid_option=1;;
#		9)		 or move 4 & 5 down to keep them all together
		*[q*]*)	exit;;
		*)	echo ""
			echo "! Not a valid option, Please try again,"
			echo "or type q to quit. "; echo "";;
	esac
done

validinput=0

while [[ "$validinput" != 1 ]] && [[ $preset == 0 ]]
do
	echo ""
	echo "How many pixels are in your blade? (Press ENTER for default 144) "
	read  height
	if [[ $height == "" ]]; then height=144 length=36 offset=18 validinput=1; echo "Default 144"
	elif [[ $height == "q" ]]; then exit
	elif [[ $height -gt 264 ]] && [[ $height -le 576 ]]; then
		read -p "Are you sure there's that many pixels?? (y/n)" too_many
		if [[ $too_many == "y" ]]; then validinput=1; else echo ""; fi
	elif [[ $height -gt 576 ]]; then
		echo "! That is likely impossible."
		echo "  Please try again or type 'q' to quit.";	echo ""
	elif [[ $height =~ ^[0-9]{1,3}$ ]]; then validinput=1
	fi
done

if [ $height_only != 1 ]; then
	validinput=0
	while [[ "$validinput" != 1 ]] && [[ $preset == 0 ]]
	do
        echo ""
        echo "What is your preferred unit of measuring distance? (i - inches, c - cm) "
        read pref
        case $pref in
            "") echo "! Some option is needed. Please try again"; echo "";;
            i)  calc_len=$(printf %.0f "$((10**3 * $height * 100 / 144 * 100 / 254))e-3"); offset_default=18; validinput=1; units="inches"; echo "";;
            c)  calc_len=$(printf %.0f "$((10**3 * $height * 100 / 144))e-3"); offset_default=46; validinput=1; units="centimeters"; echo "";;
            *[q*]*) exit;;
            *)  echo ""
				echo "! Not a valid option, Please choose inches or cm,"
				echo "or type q to quit. "; echo "";;
        esac
    done

	validinput=0
	while [[ "$validinput" != 1 ]] && [[ $preset == 0 ]]
	do
		echo "How many "$units" is your blade? (Press ENTER for calculated default $calc_len) "
		read length
		if [[ $units == "inches" ]]; then max=48; else max=122; fi
		if [[ $length == "" ]]; then length=$calc_len validinput=1; echo "Default $calc_len"
		elif [[ $length == "q" ]]; then exit
		elif [[ $length -gt $max ]]; then
			read -p "Are you sure your blade is that long?? (y/n) " too_long
			if [[ $too_long == "y" ]]; then validinput=1; else echo ""; fi
		elif [[ $length =~ ^[0-9]{1,3}$ ]]; then validinput=1
		else
			echo "! That is likely impossible."
			echo "  Please try again or type 'q' to quit."
			echo ""
		fi
	done

	validinput=0
	while [[ "$validinput" != 1 ]] && [[ $preset == 0 ]]
	do
        echo ""
        echo "How many "$units" is the distance from the bottom of the blade to the fulcrum?"
        echo "(The fulcrum is usually the swinging joint) (Press ENTER for default $offset_default)"
		read offset
		if [[ $units == "inches" ]]; then max=30; else max=76; fi
		if [[ $offset == "" ]]; then  offset=$offset_default validinput=1; echo "Default $offset_default"
		elif [[ $offset == "q" ]]; then exit
		elif [[ $offset -gt $max ]]; then
			read -p "Are you sure this distance is that long?? (y/n) " long_arm
			if [[ $long_arm == "y" ]]; then validinput=1; else echo ""; fi
		elif [[ $offset =~ ^[0-9]{1,3}$ ]]; then validinput=1
		else
			echo "! That is likely impossible."
			echo "  Please try again or type 'q' to quit."
			echo ""
		fi
	done
else # height_only
	length=36 offset=18
fi

if [ $preset == 0 ]; then make IMAGE=$image OPTIONS="--height=$height  --length=$length --offset=$offset"; HEIGHT=$height; fi
mv ./preview.png ./"${sourcebase}"_"${HEIGHT}"_preview.png
mv ./image.h ../styles/"${sourcebase}"_"${HEIGHT}"_FC_POV_data.h
mv ./image_pgm.h ../styles/"${sourcebase}"_"${HEIGHT}"_SC_POV_data.h
mv ./image_8bit.h ../styles/"${sourcebase}"_"${HEIGHT}"_8b_POV_data.h
echo ""
echo ""
echo "Conversion DONE! Find your files as shown below."
echo ""
echo "preview image:"
echo "	ProffieOS/pov_tools/"$sourcebase"_"$HEIGHT"_preview.png"
echo "Full color image data file:"
echo "	ProffieOS/styles/"$sourcebase"_"$HEIGHT"_FC_POV_data.h"
echo "Single color image data file:"
echo "	ProffieOS/styles/"$sourcebase"_"$HEIGHT"_SC_POV_data.h"
echo "256 color image data file:"
echo "	ProffieOS/styles/"$sourcebase"_"$HEIGHT"_8b_POV_data.h"
exit