package gondole

import (
	"encoding/json"
	"fmt"

	"github.com/sendgrid/rest"
)

type UserToken struct {
	Access_token string `json:"access_token"`
	CreatedAt    int    `json:"created_at"`
	Scope        string `json:"scope"`
	TokenType    string `json:"token_type"`
}

func (g *Client) Login(username, password string) error {
	if username == "" {
		return fmt.Errorf("missing username")
	}
	if password == "" {
		return fmt.Errorf("missing password")
	}

	hdrs := make(map[string]string)
	opts := make(map[string]string)

	hdrs["User-Agent"] = "Gondole/" + GondoleVersion
	hdrs["Authorization"] = "Bearer %s" + g.Secret

	opts["grant_type"] = "password"
	opts["client_id"] = g.ID
	opts["client_secret"] = g.Secret
	opts["username"] = username
	opts["password"] = password

	req := rest.Request{
		BaseURL:     g.InstanceURL + "/oauth/token",
		Headers:     hdrs,
		QueryParams: opts,
		Method:      rest.Post,
	}

	r, err := rest.API(req)
	if err != nil {
		return err
	}

	var resp UserToken

	println(r.Body)
	err = json.Unmarshal([]byte(r.Body), &resp)
	if err != nil {
		return err
	}

	g.userToken = &resp
	return nil
}