package helpers

import (
	"encoding/json"
	"fmt"
	"os"

	"golang.org/x/oauth2"
	"golang.org/x/oauth2/google"
)

func GetClientSecret(path string) (*oauth2.Config, error) {
	b, err := os.ReadFile("client_secret.json")

	if err != nil {
		return nil, fmt.Errorf("unable to read client secret file: %v", err)
	}

	clientSecret, err := google.ConfigFromJSON(b, "https://www.googleapis.com/auth/userinfo.email", "https://www.googleapis.com/auth/userinfo.profile", "https://www.googleapis.com/auth/spreadsheets.readonly")

	if err != nil {
		return nil, fmt.Errorf("unable to parse client secret file to config: %v", err)
	}

	return clientSecret, nil
}

func GetToken(path string) (*oauth2.Token, error) {
	file, err := os.Open(path)

	if err != nil {
		return nil, fmt.Errorf("unable to read token file: %v", err)
	}

	token := map[string]string{}

	err = json.NewDecoder(file).Decode(&token)

	if err != nil {
		return nil, fmt.Errorf("unable to parse token file to token: %v", err)
	}

	return &oauth2.Token{
		AccessToken:  token["access_token"],
		RefreshToken: token["refresh_token"],
	}, nil
}