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main.go
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main.go
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package main
import (
"errors"
"fmt"
"os"
"strconv"
"github.com/microhod/adventofcode/internal/puzzle"
)
const (
tokenFile = ".token"
readmeFile = "README.md"
inputFile = "input.txt"
testFile = "test.txt"
solutionFile = "main.go"
)
// get the puzzle files for the year & day specified
func main() {
// parse arguments
if len(os.Args) < 3 {
fail(fmt.Errorf("need year and day arguments"))
}
year, err := strconv.Atoi(os.Args[1])
if err != nil {
fail(err)
}
day, err := strconv.Atoi(os.Args[2])
if err != nil {
fail(err)
}
// create client with token
bytes, err := os.ReadFile(tokenFile)
if err != nil {
fail(err)
}
token := string(bytes)
client := puzzle.NewClient(token)
p, err := client.Get(year, day)
if err != nil {
fail(err)
}
// make folders
err = os.MkdirAll(folder(year, day), os.ModePerm)
if err != nil {
fail(err)
}
// README.md
readme, err := os.Create(fmt.Sprintf("%s/%s", folder(year, day), readmeFile))
if err != nil {
fail(err)
}
fmt.Fprintln(readme, p.Readme)
// input.txt
input, err := os.Create(fmt.Sprintf("%s/%s", folder(year, day), inputFile))
if err != nil {
fail(err)
}
fmt.Fprint(input, p.Input)
// test.txt
testFilePath := fmt.Sprintf("%s/%s", folder(year, day), testFile)
// only create test.txt if it doesn't already exist
if !exists(testFilePath) {
test, err := os.Create(testFilePath)
if err != nil {
fail(err)
}
fmt.Fprintln(test, p.TestInput)
}
// main.go
solutionPath := fmt.Sprintf("%s/%s", folder(year, day), solutionFile)
// only create main.go if it doesn't already exist
if !exists(solutionPath) {
main, err := os.Create(solutionPath)
if err != nil {
fail(err)
}
solution, err := puzzle.InitialSolutionFile(p)
if err != nil {
fail(err)
}
fmt.Fprint(main, solution)
}
}
func exists(path string) bool {
_, err := os.Stat(path)
return !errors.Is(err, os.ErrNotExist)
}
func fail(err error) {
fmt.Printf("ERROR: %s\n", err)
os.Exit(1)
}
func folder(year, day int) string {
if day < 10 {
return fmt.Sprintf("%d/0%d", year, day)
}
return fmt.Sprintf("%d/%d", year, day)
}