package main

import (
	"bufio"
	"fmt"
	"os"
	"slices"
	"strconv"
	"strings"
)

type Data struct {
	CardNr     int
	WinNumber  []int
	YourNumber []int
}

func convertStringToInt(s []string) []int {
	var result []int
	for _, x := range s {
		inti, err := strconv.Atoi(x)
		if err != nil {
			return nil
		}
		result = append(result, inti)
	}
	return result
}
func getData(s string) []string {
	var result []string
	fileReader, err := os.Open(s)
	if err != nil {
		return nil
	}
	fileScanner := bufio.NewScanner(fileReader)
	fileScanner.Split(bufio.ScanLines)
	for fileScanner.Scan() {
		result = append(result, fileScanner.Text())
	}
	return result
}
func convertToUsefulData(s []string) []Data {
	var result []Data
	for i, line := range s {
		spl := strings.Split(line, ":")
		numbers := strings.Split(spl[1], "|")
		win := strings.Fields(numbers[0])
		your := strings.Fields(numbers[1])
		result = append(result, Data{CardNr: i, WinNumber: convertStringToInt(win), YourNumber: convertStringToInt(your)})
	}
	return result
}

func main() {
	fmt.Println("Go Fast!")
	data := convertToUsefulData(getData("./data"))
	fmt.Println(data)
	Part1(data)
}

func Part1(data []Data) {
	var result int
	for i, _ := range data {
		var count int
		for j, _ := range data[i].YourNumber {
			if slices.Contains(data[i].WinNumber, data[i].YourNumber[j]) {
				if count == 0 {
					count++
				} else {
					count *= 2
				}
			}
		}
		result += count
		fmt.Printf("card %d Points: %d\n", i, count)
	}
	fmt.Println("The result is: ", result)
}