package main

import (
	"context"
	"flag"
	"time"

	"golang.org/x/oauth2"
	"gopkg.in/mxpv/patreon-go.v1"
)

var (
	// Patreon
	patreonClientID     = flag.String("patreon-client-id", "", "Patreon client ID")
	patreonClientSecret = flag.String("patreon-client-secret", "", "Patreon client secret")
	patreonAccessToken  = flag.String("patreon-access-token", "", "Patreon access token")
	patreonRefreshToken = flag.String("patreon-refresh-token", "", "Patreon refresh token")
)

func makePatreon() (*patreon.Client, error) {
	config := oauth2.Config{
		ClientID:     *patreonClientID,
		ClientSecret: *patreonClientSecret,
		Endpoint: oauth2.Endpoint{
			AuthURL:  patreon.AuthorizationURL,
			TokenURL: patreon.AccessTokenURL,
		},
		Scopes: []string{"users", "pledges-to-me", "my-campaign"},
	}

	token := oauth2.Token{
		AccessToken:  *patreonAccessToken,
		RefreshToken: *patreonRefreshToken,
		// Must be non-nil, otherwise token will not be expired
		Expiry: time.Now().Add(-24 * time.Hour),
	}

	tc := config.Client(context.Background(), &token)

	client := patreon.NewClient(tc)
	_, err := client.FetchUser()
	if err != nil {
		return nil, err
	}

	return client, nil
}