package handler

import (
	"baron-sso-backend/internal/domain"
	"baron-sso-backend/internal/service"
	"bytes"
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/gofiber/fiber/v2"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"
	"gorm.io/gorm"
)

// MockTenantService is a mock for service.TenantService
type MockTenantService struct {
	mock.Mock
}

func (m *MockTenantService) RegisterTenant(ctx context.Context, name, slug, description string, domains []string) (*domain.Tenant, error) {
	args := m.Called(ctx, name, slug, description, domains)
	if args.Get(0) == nil {
		return nil, args.Error(1)
	}
	return args.Get(0).(*domain.Tenant), args.Error(1)
}

func (m *MockTenantService) GetTenantByDomain(ctx context.Context, domainName string) (*domain.Tenant, error) {
	args := m.Called(ctx, domainName)
	if args.Get(0) == nil {
		return nil, args.Error(1)
	}
	return args.Get(0).(*domain.Tenant), args.Error(1)
}

func (m *MockTenantService) ApproveTenant(ctx context.Context, tenantID string) error {
	args := m.Called(ctx, tenantID)
	return args.Error(0)
}

func (m *MockTenantService) RequestRegistration(ctx context.Context, name, slug, description, domainName, adminEmail string) (*domain.Tenant, error) {
	args := m.Called(ctx, name, slug, description, domainName, adminEmail)
	if args.Get(0) == nil {
		return nil, args.Error(1)
	}
	return args.Get(0).(*domain.Tenant), args.Error(1)
}

func (m *MockTenantService) GetTenantBySlug(ctx context.Context, slug string) (*domain.Tenant, error) {
	args := m.Called(ctx, slug)
	if args.Get(0) == nil {
		return nil, args.Error(1)
	}
	return args.Get(0).(*domain.Tenant), args.Error(1)
}

func (m *MockTenantService) GetTenant(ctx context.Context, id string) (*domain.Tenant, error) {
	args := m.Called(ctx, id)
	if args.Get(0) == nil {
		return nil, args.Error(1)
	}
	return args.Get(0).(*domain.Tenant), args.Error(1)
}

func (m *MockTenantService) SetKetoService(keto service.KetoService) {
	m.Called(keto)
}

func TestTenantHandler_CreateTenant(t *testing.T) {
	app := fiber.New()
	mockSvc := new(MockTenantService)
	// CreateTenant checks h.DB != nil
	h := &TenantHandler{Service: mockSvc, DB: &gorm.DB{}}

	app.Post("/tenants", h.CreateTenant)

	input := map[string]interface{}{
		"name":    "Test Tenant",
		"slug":    "test-tenant",
		"domains": []string{"test.com"},
	}
	body, _ := json.Marshal(input)

	mockSvc.On("RegisterTenant", mock.Anything, "Test Tenant", "test-tenant", "", []string{"test.com"}).
		Return(&domain.Tenant{ID: "t1", Name: "Test Tenant", Slug: "test-tenant"}, nil)

	req := httptest.NewRequest("POST", "/tenants", bytes.NewReader(body))
	req.Header.Set("Content-Type", "application/json")
	resp, _ := app.Test(req)

	assert.Equal(t, http.StatusCreated, resp.StatusCode)
	var got map[string]interface{}
	json.NewDecoder(resp.Body).Decode(&got)
	assert.Equal(t, "t1", got["id"])
}

func TestTenantHandler_ApproveTenant(t *testing.T) {
	app := fiber.New()
	mockSvc := new(MockTenantService)
	h := &TenantHandler{Service: mockSvc}

	app.Post("/tenants/:id/approve", h.ApproveTenant)

	mockSvc.On("ApproveTenant", mock.Anything, "t1").Return(nil)

	req := httptest.NewRequest("POST", "/tenants/t1/approve", nil)
	resp, _ := app.Test(req)

	assert.Equal(t, http.StatusOK, resp.StatusCode)
}