//go:build integration
// +build integration

package refreshtokens_test

import (
	"context"
	"crypto/sha1"
	"errors"
	"fmt"
	"testing"
	"time"

	"git.sendico.io/tech/sxchnge/bff/edge/shared/storage/refreshtokens"
	"git.sendico.io/tech/sxchnge/bff/pkg/merrors"
	factory "git.sendico.io/tech/sxchnge/bff/pkg/mlogger/factory"
	"git.sendico.io/tech/sxchnge/bff/pkg/model"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
	"github.com/testcontainers/testcontainers-go"
	"github.com/testcontainers/testcontainers-go/modules/mongodb"
	"github.com/testcontainers/testcontainers-go/wait"
	"go.mongodb.org/mongo-driver/v2/bson"
	"go.mongodb.org/mongo-driver/v2/mongo"
	"go.mongodb.org/mongo-driver/v2/mongo/options"
)

func setupTestDB(t *testing.T) (*refreshtokens.RefreshTokenDB, func()) {
	db, _, cleanup := setupTestDBWithMongo(t)
	return db, cleanup
}

func setupTestDBWithMongo(t *testing.T) (*refreshtokens.RefreshTokenDB, *mongo.Database, func()) {
	// mark as helper for better test failure reporting
	t.Helper()

	startCtx, startCancel := context.WithTimeout(context.Background(), 2*time.Minute)
	defer startCancel()

	mongoContainer, err := mongodb.Run(startCtx,
		"mongo:latest",
		mongodb.WithUsername("root"),
		mongodb.WithPassword("password"),
		testcontainers.WithWaitStrategy(wait.ForListeningPort("27017/tcp").WithStartupTimeout(2*time.Minute)),
	)
	require.NoError(t, err, "failed to start MongoDB container")

	mongoURI, err := mongoContainer.ConnectionString(startCtx)
	require.NoError(t, err, "failed to get MongoDB connection string")

	clientOptions := options.Client().ApplyURI(mongoURI)
	client, err := mongo.Connect(clientOptions)
	require.NoError(t, err, "failed to connect to MongoDB")

	database := client.Database(fmt.Sprintf("test_refresh_tokens_%x", sha1.Sum([]byte(t.Name()))))
	logger := factory.NewLogger(true)

	db, err := refreshtokens.Create(logger, database)
	require.NoError(t, err, "failed to create refresh tokens db")

	cleanup := func() {
		_ = database.Drop(context.Background())
		_ = client.Disconnect(context.Background())
		termCtx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
		defer cancel()
		_ = mongoContainer.Terminate(termCtx)
	}

	return db, database, cleanup
}

func createTestRefreshToken(accountRef bson.ObjectID, clientID, deviceID, token string) *model.RefreshToken {
	return &model.RefreshToken{
		ClientRefreshToken: model.ClientRefreshToken{
			SessionIdentifier: model.SessionIdentifier{
				ClientID: clientID,
				DeviceID: deviceID,
			},
			RefreshToken: token,
		},
		AccountRef: &accountRef,
		ExpiresAt:  time.Now().Add(24 * time.Hour),
		IsRevoked:  false,
		UserAgent:  "TestUserAgent/1.0",
		IPAddress:  "192.168.1.1",
		LastUsedAt: time.Now(),
	}
}

func TestRefreshTokenDB_AuthenticationFlow(t *testing.T) {
	db, cleanup := setupTestDB(t)
	defer cleanup()

	ctx := context.Background()

	t.Run("Complete_User_Authentication_Flow", func(t *testing.T) {
		// Setup: Create user and client
		userID := bson.NewObjectID()
		clientID := "web-app"
		deviceID := "user-desktop-chrome"
		token := "refresh_token_12345"

		// Step 1: User logs in - create initial refresh token
		refreshToken := createTestRefreshToken(userID, clientID, deviceID, token)
		err := db.Create(ctx, refreshToken)
		require.NoError(t, err)

		// Step 2: User uses refresh token to get new access token
		crt := &model.ClientRefreshToken{
			SessionIdentifier: model.SessionIdentifier{
				ClientID: clientID,
				DeviceID: deviceID,
			},
			RefreshToken: token,
		}

		retrievedToken, err := db.GetByCRT(ctx, crt)
		require.NoError(t, err)
		require.NotNil(t, retrievedToken.AccountRef)
		assert.Equal(t, userID, *retrievedToken.AccountRef)
		assert.Equal(t, token, retrievedToken.RefreshToken)
		assert.False(t, retrievedToken.IsRevoked)

		// Step 3: User logs out - revoke the token
		session := &model.SessionIdentifier{
			ClientID: clientID,
			DeviceID: deviceID,
		}
		err = db.Revoke(ctx, userID, session)
		require.NoError(t, err)

		// Step 4: Try to use revoked token - should fail
		_, err = db.GetByCRT(ctx, crt)
		assert.Error(t, err)
		assert.True(t, errors.Is(err, merrors.ErrNoData))
	})

	t.Run("Manual_Token_Revocation_Workaround", func(t *testing.T) {
		// Test manual revocation by directly updating the token
		userID := bson.NewObjectID()
		clientID := "web-app"
		deviceID := "user-desktop-chrome"
		token := "manual_revoke_token_123"

		// Step 1: Create token
		refreshToken := createTestRefreshToken(userID, clientID, deviceID, token)
		err := db.Create(ctx, refreshToken)
		require.NoError(t, err)

		// Step 2: Manually revoke token by updating it directly
		refreshToken.IsRevoked = true
		err = db.Update(ctx, refreshToken)
		require.NoError(t, err)

		// Step 3: Try to use revoked token - should fail
		crt := &model.ClientRefreshToken{
			SessionIdentifier: model.SessionIdentifier{
				ClientID: clientID,
				DeviceID: deviceID,
			},
			RefreshToken: token,
		}

		_, err = db.GetByCRT(ctx, crt)
		assert.Error(t, err)
		assert.True(t, errors.Is(err, merrors.ErrNoData))
	})
}

func TestRefreshTokenDB_MultiDeviceManagement(t *testing.T) {
	db, cleanup := setupTestDB(t)
	defer cleanup()

	ctx := context.Background()

	t.Run("User_With_Multiple_Devices", func(t *testing.T) {
		userID := bson.NewObjectID()
		clientID := "mobile-app"

		// User logs in from phone
		phoneToken := createTestRefreshToken(userID, clientID, "phone-ios", "phone_token_123")
		err := db.Create(ctx, phoneToken)
		require.NoError(t, err)

		// User logs in from tablet
		tabletToken := createTestRefreshToken(userID, clientID, "tablet-android", "tablet_token_456")
		err = db.Create(ctx, tabletToken)
		require.NoError(t, err)

		// User logs in from desktop
		desktopToken := createTestRefreshToken(userID, clientID, "desktop-windows", "desktop_token_789")
		err = db.Create(ctx, desktopToken)
		require.NoError(t, err)

		// User wants to logout from all devices except current (phone)
		err = db.RevokeAll(ctx, userID, "phone-ios")
		require.NoError(t, err)

		// Phone should still work
		phoneCRT := &model.ClientRefreshToken{
			SessionIdentifier: model.SessionIdentifier{
				ClientID: clientID,
				DeviceID: "phone-ios",
			},
			RefreshToken: "phone_token_123",
		}
		_, err = db.GetByCRT(ctx, phoneCRT)
		require.NoError(t, err)

		// Tablet and desktop should be revoked
		tabletCRT := &model.ClientRefreshToken{
			SessionIdentifier: model.SessionIdentifier{
				ClientID: clientID,
				DeviceID: "tablet-android",
			},
			RefreshToken: "tablet_token_456",
		}
		_, err = db.GetByCRT(ctx, tabletCRT)
		assert.Error(t, err)

		desktopCRT := &model.ClientRefreshToken{
			SessionIdentifier: model.SessionIdentifier{
				ClientID: clientID,
				DeviceID: "desktop-windows",
			},
			RefreshToken: "desktop_token_789",
		}
		_, err = db.GetByCRT(ctx, desktopCRT)
		assert.Error(t, err)
	})
}