aoc/cmd/main.go

package main

import (
	"aoc/aoc2015"
	"aoc/aoc2016"
	"aoc/aoc2017"
	"aoc/aoc2018"
	"aoc/aoc2019"
	"aoc/aoc2020"
	"aoc/aoc2021"
	"aoc/aoc2022"
	"aoc/aoc2023"
	"aoc/internal/utility"
	"errors"
	"fmt"
	"strconv"
)

func main() {
	var (
		adv   utility.AdventRunner
		input string
	)

	fmt.Print("Enter year (15-23): ")
	_, err := fmt.Scanln(&input)
	utility.E(err)

	year, err := strconv.Atoi(input)
	utility.E(err)

	if year >= 2015 && year <= 2023 {
		year -= 2000
	}

	if year < 15 || year > 23 {
		utility.E(errors.New("year out of range"))
	}

	fmt.Print("Enter day (1-25): ")
	_, err = fmt.Scanln(&input)
	utility.E(err)

	day, err := strconv.Atoi(input)
	utility.E(err)

	if day < 1 || day > 25 {
		utility.E(errors.New("day out of range"))
	}

	switch year {
	case 15:
		adv = aoc2015.Runner{}
	case 16:
		adv = aoc2016.Runner{}
	case 17:
		adv = aoc2017.Runner{}
	case 18:
		adv = aoc2018.Runner{}
	case 19:
		adv = aoc2019.Runner{}
	case 20:
		adv = aoc2020.Runner{}
	case 21:
		adv = aoc2021.Runner{}
	case 22:
		adv = aoc2022.Runner{}
	case 23:
		adv = aoc2023.Runner{}
	default:
		utility.E(errors.New("unknown year in switch, should never hit this"))
	}

	if adv != nil {
		adv.Run(day)
	}
}