package auth

import (
	"fmt"
	"testing"

	"secondbit.org/uuid"
)

const (
	clientChangeSecret = 1 << iota
	clientChangeRedirectURI
	clientChangeOwnerID
	clientChangeName
	clientChangeLogo
	clientChangeWebsite
)

var clientStores = []ClientStore{NewMemstore()}

func compareClients(client1, client2 Client) (success bool, field string, val1, val2 interface{}) {
	if !client1.ID.Equal(client2.ID) {
		return false, "ID", client1.ID, client2.ID
	}
	if client1.Secret != client2.Secret {
		return false, "secret", client1.Secret, client2.Secret
	}
	if client1.RedirectURI != client2.RedirectURI {
		return false, "redirect URI", client1.RedirectURI, client2.RedirectURI
	}
	if !client1.OwnerID.Equal(client2.OwnerID) {
		return false, "owner ID", client1.OwnerID, client2.OwnerID
	}
	if client1.Name != client2.Name {
		return false, "name", client1.Name, client2.Name
	}
	if client1.Logo != client2.Logo {
		return false, "logo", client1.Logo, client2.Logo
	}
	if client1.Website != client2.Website {
		return false, "website", client1.Website, client2.Website
	}
	return true, "", nil, nil
}

func TestClientStoreSuccess(t *testing.T) {
	t.Parallel()
	client := Client{
		ID:          uuid.NewID(),
		Secret:      "secret",
		RedirectURI: "redirectURI",
		OwnerID:     uuid.NewID(),
		Name:        "name",
		Logo:        "logo",
		Website:     "website",
	}
	for _, store := range clientStores {
		err := store.SaveClient(client)
		if err != nil {
			t.Errorf("Error saving client to %T: %s", store, err)
		}
		err = store.SaveClient(client)
		if err != ErrClientAlreadyExists {
			t.Errorf("Expected ErrClientAlreadyExists, got %v from %T", err, store)
		}
		retrieved, err := store.GetClient(client.ID)
		if err != nil {
			t.Errorf("Error retrieving client from %T: %s", store, err)
		}
		success, field, expectation, result := compareClients(client, retrieved)
		if !success {
			t.Errorf("Expected field %s to be %v, but %T returned %v", field, expectation, store, result)
		}
		clients, err := store.ListClientsByOwner(client.OwnerID, 25, 0)
		if err != nil {
			t.Errorf("Error retrieving clients by owner from %T: %s", store, err)
		}
		if len(clients) != 1 {
			t.Errorf("Expected 1 client in response from %T, got %+v", store, clients)
		}
		success, field, expectation, result = compareClients(client, clients[0])
		if !success {
			t.Errorf("Expected field %s to be %v, but %T returned %v", field, expectation, store, result)
		}
		err = store.DeleteClient(client.ID)
		if err != nil {
			t.Errorf("Error deleting client from %T: %s", store, err)
		}
		err = store.DeleteClient(client.ID)
		if err != ErrClientNotFound {
			t.Errorf("Expected ErrClientNotFound, got %s from %T", err, store)
		}
		retrieved, err = store.GetClient(client.ID)
		if err != ErrClientNotFound {
			t.Errorf("Expected ErrClientNotFound from %T, got %+v and %s", store, retrieved, err)
		}
		clients, err = store.ListClientsByOwner(client.OwnerID, 25, 0)
		if err != nil {
			t.Errorf("Error listing clients by owner from %T: %s", store, err)
		}
		if len(clients) != 0 {
			t.Errorf("Expected 0 clients in response from %T, got %+v", store, clients)
		}
	}
}

func TestClientUpdates(t *testing.T) {
	t.Parallel()
	variations := 1 << 10
	client := Client{
		ID:          uuid.NewID(),
		Secret:      "secret",
		RedirectURI: "redirectURI",
		OwnerID:     uuid.NewID(),
		Name:        "name",
		Logo:        "logo",
		Website:     "website",
	}
	for i := 0; i < variations; i++ {
		var secret, redirectURI, name, logo, website string
		change := ClientChange{}
		expectation := client
		result := client
		if i&clientChangeSecret != 0 {
			secret = fmt.Sprintf("secret-%d", i)
			change.Secret = &secret
			expectation.Secret = secret
		}
		if i&clientChangeRedirectURI != 0 {
			redirectURI = fmt.Sprintf("redirect-uri-%d", i)
			change.RedirectURI = &redirectURI
			expectation.RedirectURI = redirectURI
		}
		if i&clientChangeOwnerID != 0 {
			change.OwnerID = uuid.NewID()
			expectation.OwnerID = change.OwnerID
		}
		if i&clientChangeName != 0 {
			name = fmt.Sprintf("name-%d", i)
			change.Name = &name
			expectation.Name = name
		}
		if i&clientChangeLogo != 0 {
			logo = fmt.Sprintf("logo-%d", i)
			change.Logo = &logo
			expectation.Logo = logo
		}
		if i&clientChangeWebsite != 0 {
			website = fmt.Sprintf("website-%d", i)
			change.Website = &website
			expectation.Website = website
		}
		result.ApplyChange(change)
		match, field, expected, got := compareClients(expectation, result)
		if !match {
			t.Errorf("Expected field `%s` to be `%v`, got `%v`", field, expected, got)
		}
		for _, store := range clientStores {
			err := store.SaveClient(client)
			if err != nil {
				t.Errorf("Error saving client in %T: %s", store, err)
			}
			err = store.UpdateClient(client.ID, change)
			if err != nil {
				t.Errorf("Error updating client in %T: %s", store, err)
			}
			retrieved, err := store.GetClient(client.ID)
			if err != nil {
				t.Errorf("Error getting profile from %T: %s", store, err)
			}
			match, field, expected, got = compareClients(expectation, retrieved)
			if !match {
				t.Errorf("Expected field `%s` to be `%v`, got `%v` from %T", field, expected, got, store)
			}
			err = store.DeleteClient(client.ID)
			if err != nil {
				t.Errorf("Error deleting client from %T: %s", store, err)
			}
			err = store.UpdateClient(client.ID, change)
			if err != ErrClientNotFound {
				t.Errorf("Expected ErrClientNotFound, got %v from %T", err, store)
			}
		}
	}
}