package basic

import (
	"testing"
	"time"

	"github.com/golang/mock/gomock"
	"github.com/tinode/chat/server/auth"
	"github.com/tinode/chat/server/store"
	"github.com/tinode/chat/server/store/mock_store"
	"github.com/tinode/chat/server/store/types"
	"golang.org/x/crypto/bcrypt"
)

func TestAuthenticateScopesLoginByTenant(t *testing.T) {
	ctrl := gomock.NewController(t)
	users := mock_store.NewMockUsersPersistenceInterface(ctrl)
	oldUsers := store.Users
	store.Users = users
	t.Cleanup(func() {
		store.Users = oldUsers
		ctrl.Finish()
	})

	hash, err := bcrypt.GenerateFromPassword([]byte("password"), bcrypt.MinCost)
	if err != nil {
		t.Fatal(err)
	}
	users.EXPECT().GetAuthByLogin(types.TenantID(7), "alice").
		Return(types.Uid(70), auth.LevelAuth, hash, time.Time{}, nil)
	users.EXPECT().GetAuthByLogin(types.TenantID(8), "alice").
		Return(types.Uid(80), auth.LevelAuth, hash, time.Time{}, nil)

	a := &authenticator{name: "basic", minLoginLength: defaultMinLoginLength,
		minPasswordLength: defaultMinPasswordLength}
	recA, _, err := a.Authenticate(auth.AuthContext{TenantID: 7}, []byte("alice:password"))
	if err != nil {
		t.Fatal(err)
	}
	recB, _, err := a.Authenticate(auth.AuthContext{TenantID: 8}, []byte("alice:password"))
	if err != nil {
		t.Fatal(err)
	}
	if recA.TenantID != 7 || recA.Uid != 70 || recB.TenantID != 8 || recB.Uid != 80 {
		t.Fatalf("unexpected records: A=%+v B=%+v", recA, recB)
	}
}

func TestAuthenticateRejectsMissingTenant(t *testing.T) {
	a := &authenticator{name: "basic", minLoginLength: defaultMinLoginLength,
		minPasswordLength: defaultMinPasswordLength}
	if _, _, err := a.Authenticate(auth.AuthContext{}, []byte("alice:password")); err != types.ErrMalformed {
		t.Fatalf("got %v, want %v", err, types.ErrMalformed)
	}
}

func TestCheckLoginPolicyAcceptsE164Phone(t *testing.T) {
	a := &authenticator{name: "basic", minLoginLength: defaultMinLoginLength,
		minPasswordLength: defaultMinPasswordLength}
	if err := a.checkLoginPolicy("+8615521120255"); err != nil {
		t.Fatalf("E.164 phone login rejected: %v", err)
	}
}

func TestAddRecordAcceptsE164PhoneLogin(t *testing.T) {
	ctrl := gomock.NewController(t)
	users := mock_store.NewMockUsersPersistenceInterface(ctrl)
	oldUsers := store.Users
	store.Users = users
	t.Cleanup(func() {
		store.Users = oldUsers
		ctrl.Finish()
	})

	users.EXPECT().AddAuthRecord(types.TenantID(7), types.Uid(42), auth.LevelAuth,
		gomock.Any(), time.Time{}).Return(nil)

	a := &authenticator{name: "basic", addToTags: true, minLoginLength: defaultMinLoginLength,
		minPasswordLength: 6}
	rec, err := a.AddRecord(auth.AuthContext{TenantID: 7}, &auth.Rec{TenantID: 7, Uid: 42},
		[]byte("+8615521120255:123456"))
	if err != nil {
		t.Fatal(err)
	}
	if rec == nil || rec.AuthLevel != auth.LevelAuth || len(rec.Tags) != 1 || rec.Tags[0] != "basic:+8615521120255" {
		t.Fatalf("unexpected auth record: %#v", rec)
	}
}

func TestCheckLoginPolicyRejectsMalformedPhone(t *testing.T) {
	a := &authenticator{name: "basic", minLoginLength: defaultMinLoginLength,
		minPasswordLength: defaultMinPasswordLength}
	if err := a.checkLoginPolicy("+86-15521120255"); err != types.ErrPolicy {
		t.Fatalf("got %v, want %v", err, types.ErrPolicy)
	}
}