package discord

import (
	"fmt"
	"net/url"

	"github.com/pkg/errors"
)

type Token struct {
	AccessToken  string
	TokenType    string
	ExpiresIn    int
	RefreshToken string
	Scope        string
}

const oauthurl string = "https://discord.com/oauth2/authorize"

func GetOAuthLink(cfg *Config, state string, trustedHost string) (string, error) {
	if cfg == nil {
		return "", errors.New("cfg cannot be nil")
	}
	if state == "" {
		return "", errors.New("state cannot be empty")
	}
	if trustedHost == "" {
		return "", errors.New("trustedHost cannot be empty")
	}
	values := url.Values{}
	values.Add("response_type", "code")
	values.Add("client_id", cfg.ClientID)
	values.Add("scope", cfg.OAuthScopes)
	values.Add("state", state)
	values.Add("redirect_uri", fmt.Sprintf("%s/%s", trustedHost, cfg.RedirectPath))
	values.Add("prompt", "none")

	return fmt.Sprintf("%s?%s", oauthurl, values.Encode()), nil
}