package main

import "core:encoding/hex"
import "core:log"
import "core:strings"

hex_to_rgb :: proc(hex_str: string) -> (red, blue, green: u8, ok: bool) {
	builder, err := strings.builder_make()
	if err != nil {
		log.error("failed to initialize memory")
		return 0, 0, 0, false
	}

	rgb_values: [3]u8
	rgb_count := 0
	for char, char_idx in hex_str {
		if char == '#' {
			continue
		}
		if rgb_count > 2 {
			log.error("Malformed hex colour")
			return 0, 0, 0, false
		}
		strings.write_rune(&builder, char)
		if strings.builder_len(builder) == 2 {
			str := strings.to_string(builder)
			rgb_value, ok := hex.decode_sequence(str)
			if !ok {
				log.error("failed to initialize memory")
				return 0, 0, 0, false
			}
			strings.builder_reset(&builder)

			rgb_values[rgb_count] = rgb_value

			rgb_count += 1
		}
	}

	return rgb_values[0], rgb_values[1], rgb_values[2], true
}