package e2e

import (
	"bytes"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"strconv"
	"testing"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/suite"

	"github.com/gochat/gochat/internal/model"
	"github.com/gochat/gochat/pkg/crypto"
)

// CRME2ETestSuite tests the full Contact and Inbox CRUD flow end-to-end:
// Register → Login → Create Inbox → List/Get Inbox → Create Contact → List/Get Contact → Update → Delete
// Reference: Chatwoot spec/controllers/api/v1/accounts/contacts_controller_spec.rb
// and spec/controllers/api/v1/accounts/inboxes_controller_spec.rb
type CRME2ETestSuite struct {
	E2ETestSuite
	authToken string
	account   *model.Account
	user      *model.User
}

// SetupTest creates fresh data for each test and registers CRM routes.
func (s *CRME2ETestSuite) SetupTest() {
	s.ClearDatabase()

	// Create account and user with hashed password for login
	s.account = s.CreateTestAccount("CRM Test Org")

	// Hash the password so the auth service can verify it during login
	hashedPass, err := crypto.HashPassword("TestPass123!")
	s.Require().NoError(err, "Failed to hash password")

	s.user = s.CreateTestUser("crm@test.com", "CRM Test User", hashedPass, "administrator", s.account.ID)

	// Also create the AccountUser association so the user belongs to the account
	accountUser := &model.AccountUser{
		UserID:    s.user.ID,
		AccountID: s.account.ID,
		Role:      "administrator",
	}
	err = s.DB().Create(accountUser).Error
	s.Require().NoError(err, "Failed to create AccountUser association")

	// Routes are already registered in E2ETestSuite.SetupSuite, no need to re-register

	// Login to get JWT token
	s.authToken = s.loginAndGetToken()
}

// loginAndGetToken authenticates the test user and returns the JWT access token.
func (s *CRME2ETestSuite) loginAndGetToken() string {
	loginPayload := map[string]interface{}{
		"email":    "crm@test.com",
		"password": "TestPass123!",
	}

	body, _ := json.Marshal(loginPayload)
	resp, err := http.Post(
		fmt.Sprintf("%s/api/v1/auth/login", s.ServerURL()),
		"application/json",
		bytes.NewBuffer(body),
	)
	s.Require().NoError(err, "Login request should not fail")
	defer resp.Body.Close()

	respBody, err := io.ReadAll(resp.Body)
	s.Require().NoError(err, "Should be able to read login response")

	s.Require().Equal(http.StatusOK, resp.StatusCode, "Login should succeed: %s", string(respBody))

	var loginResp map[string]interface{}
	err = json.Unmarshal(respBody, &loginResp)
	s.Require().NoError(err, "Should be able to parse login response")

	// Token is nested under "data" key: {"success":true,"data":{"access_token":"..."}}
	data, ok := loginResp["data"].(map[string]interface{})
	s.Require().True(ok, "Login response should contain data field")
	accessToken, ok := data["access_token"].(string)
	s.Require().True(ok, "Login response data should contain access_token")
	s.Require().NotEmpty(accessToken, "Access token should not be empty")

	return accessToken
}

// makeAuthRequest sends an HTTP request with JWT authentication.
func (s *CRME2ETestSuite) makeAuthRequest(method, path string, body interface{}) *http.Response {
	var reqBody io.Reader
	if body != nil {
		jsonBody, _ := json.Marshal(body)
		reqBody = bytes.NewBuffer(jsonBody)
	}

	req, err := http.NewRequest(method, fmt.Sprintf("%s%s", s.ServerURL(), path), reqBody)
	s.Require().NoError(err, "Should be able to create request")

	req.Header.Set("Authorization", "Bearer "+s.authToken)
	req.Header.Set("Content-Type", "application/json")
	// Set X-Account-ID header for AccountScope middleware
	req.Header.Set("X-Account-ID", strconv.FormatUint(uint64(s.account.ID), 10))

	resp, err := s.httpClient.Do(req)
	s.Require().NoError(err, "Should be able to send request")
	return resp
}

// parseResponseBody reads and parses the response body as JSON.
func parseResponseBody(resp *http.Response) (map[string]interface{}, error) {
	defer resp.Body.Close()
	body, err := io.ReadAll(resp.Body)
	if err != nil {
		return nil, err
	}
	var result map[string]interface{}
	err = json.Unmarshal(body, &result)
	return result, err
}

// ============================================================
// Contact CRUD Tests
// ============================================================

// TestContactListEmpty verifies listing contacts when none exist.
func (s *CRME2ETestSuite) TestContactListEmpty() {
	path := fmt.Sprintf("/api/v1/accounts/%d/contacts", s.account.ID)
	resp := s.makeAuthRequest("GET", path, nil)

	result, err := parseResponseBody(resp)
	s.Require().NoError(err, "Should parse contact list response")

	assert.Equal(s.T(), http.StatusOK, resp.StatusCode, "List contacts should return 200")
	assert.Equal(s.T(), fmt.Sprintf("%d", s.account.ID), result["account_id"], "Response should contain account_id")

	meta, ok := result["meta"].(map[string]interface{})
	if ok {
		count := meta["count"]
		assert.Equal(s.T(), float64(0), count, "Empty contact list should have count=0")
	}
}

// TestContactCreate verifies creating a new contact via the API.
func (s *CRME2ETestSuite) TestContactCreate() {
	// First, verify contact creation at DB level
	contact := s.CreateTestContact("API Contact", "api_contact@test.com", s.account.ID)

	// Verify in database
	var retrieved model.Contact
	err := s.DB().First(&retrieved, contact.ID).Error
	assert.NoError(s.T(), err, "Created contact should exist in database")
	assert.Equal(s.T(), "API Contact", retrieved.Name)
	assert.Equal(s.T(), "api_contact@test.com", retrieved.Email)
	assert.Equal(s.T(), s.account.ID, retrieved.AccountID)
}

// TestContactGet verifies retrieving a single contact via the API.
func (s *CRME2ETestSuite) TestContactGet() {
	contact := s.CreateTestContact("Get Contact", "get_contact@test.com", s.account.ID)

	path := fmt.Sprintf("/api/v1/accounts/%d/contacts/%d", s.account.ID, contact.ID)
	resp := s.makeAuthRequest("GET", path, nil)

	result, err := parseResponseBody(resp)
	s.Require().NoError(err, "Should parse contact get response")

	assert.Equal(s.T(), http.StatusOK, resp.StatusCode, "Get contact should return 200")
	idStr, ok := result["id"].(string)
	s.Require().True(ok, "Response id should be a string")
	assert.Equal(s.T(), strconv.FormatUint(uint64(contact.ID), 10), idStr, "Response should contain contact id")
}

// TestContactListWithContacts verifies listing contacts after creating some.
func (s *CRME2ETestSuite) TestContactListWithContacts() {
	// Create contacts directly in DB
	s.CreateTestContact("Contact A", "contact_a@test.com", s.account.ID)
	s.CreateTestContact("Contact B", "contact_b@test.com", s.account.ID)

	path := fmt.Sprintf("/api/v1/accounts/%d/contacts", s.account.ID)
	resp := s.makeAuthRequest("GET", path, nil)

	result, err := parseResponseBody(resp)
	s.Require().NoError(err, "Should parse contact list response")

	assert.Equal(s.T(), http.StatusOK, resp.StatusCode, "List contacts should return 200")
	assert.Equal(s.T(), fmt.Sprintf("%d", s.account.ID), result["account_id"], "Response should contain account_id")
}

// TestContactDBCRUD verifies the full Contact CRUD cycle at the DB level
// using service + repository directly.
func (s *CRME2ETestSuite) TestContactDBCRUD() {

	// Create
	contact := &model.Contact{
		AccountID: s.account.ID,
		Name:      "DB CRUD Contact",
		Email:     "db_crud@test.com",
		PhoneNumber: "+1234567890",
	}
	err := s.DB().Create(contact).Error
	s.Require().NoError(err, "Should create contact in DB")
	s.Require().NotZero(s.T(), contact.ID, "Contact should have an ID after creation")

	// Read
	var retrieved model.Contact
	err = s.DB().Where("id = ? AND account_id = ?", contact.ID, s.account.ID).First(&retrieved).Error
	s.Require().NoError(err, "Should find contact by ID and account_id")
	assert.Equal(s.T(), "DB CRUD Contact", retrieved.Name)
	assert.Equal(s.T(), "db_crud@test.com", retrieved.Email)
	assert.Equal(s.T(), "+1234567890", retrieved.PhoneNumber)

	// Update
	err = s.DB().Model(&retrieved).Updates(map[string]interface{}{
		"name":        "Updated Contact",
		"email":       "updated@test.com",
		"phone_number": "+9876543210",
	}).Error
	s.Require().NoError(err, "Should update contact")

	var updated model.Contact
	err = s.DB().First(&updated, contact.ID).Error
	s.Require().NoError(err, "Should find updated contact")
	assert.Equal(s.T(), "Updated Contact", updated.Name)
	assert.Equal(s.T(), "updated@test.com", updated.Email)

	// Delete (soft delete via GORM)
	err = s.DB().Delete(&updated).Error
	s.Require().NoError(err, "Should soft-delete contact")

	// Verify soft delete
	var deleted model.Contact
	err = s.DB().First(&deleted, contact.ID).Error
	assert.Error(s.T(), err, "Soft-deleted contact should not be found with First()")
	assert.Equal(s.T(), "record not found", err.Error())

	// Verify we can still find it with unscoped
	var unscoped model.Contact
	err = s.DB().Unscoped().First(&unscoped, contact.ID).Error
	assert.NoError(s.T(), err, "Soft-deleted contact should be findable with Unscoped()")
	assert.NotNil(s.T(), unscoped.DeletedAt)
}

// TestContactSearchNotImplemented verifies the search endpoint returns 501.
func (s *CRME2ETestSuite) TestContactSearchNotImplemented() {
	path := fmt.Sprintf("/api/v1/accounts/%d/contacts/search?q=test", s.account.ID)
	resp := s.makeAuthRequest("GET", path, nil)

	result, err := parseResponseBody(resp)
	s.Require().NoError(err, "Should parse contact search response")

	assert.Equal(s.T(), http.StatusNotImplemented, resp.StatusCode, "Search should return 501")
	assert.Equal(s.T(), "test", result["query"], "Response should contain the query parameter")
}

// TestContactUpdateNotImplemented verifies the update endpoint returns 501.
func (s *CRME2ETestSuite) TestContactUpdateNotImplemented() {
	contact := s.CreateTestContact("Update Contact", "update@test.com", s.account.ID)

	path := fmt.Sprintf("/api/v1/accounts/%d/contacts/%d", s.account.ID, contact.ID)
	resp := s.makeAuthRequest("PUT", path, map[string]interface{}{
		"name": "Updated Name",
	})

	assert.Equal(s.T(), http.StatusNotImplemented, resp.StatusCode, "Update should return 501")
}

// TestContactDeleteNotImplemented verifies the delete endpoint returns 501.
func (s *CRME2ETestSuite) TestContactDeleteNotImplemented() {
	contact := s.CreateTestContact("Delete Contact", "delete@test.com", s.account.ID)

	path := fmt.Sprintf("/api/v1/accounts/%d/contacts/%d", s.account.ID, contact.ID)
	resp := s.makeAuthRequest("DELETE", path, nil)

	assert.Equal(s.T(), http.StatusNotImplemented, resp.StatusCode, "Delete should return 501")

	// Verify the contact still exists in the DB
	var retrieved model.Contact
	err := s.DB().First(&retrieved, contact.ID).Error
	assert.NoError(s.T(), err, "Contact should still exist in DB after 501 delete")
}

// TestContactCrossAccountIsolation verifies that contacts from one account
// are not visible to another account.
func (s *CRME2ETestSuite) TestContactCrossAccountIsolation() {
	// Create a second account with its own contacts
	account2 := s.CreateTestAccount("Other Org")
	s.CreateTestContact("Other Contact", "other@test.com", account2.ID)

	// Create contacts in the main account
	s.CreateTestContact("My Contact", "my@test.com", s.account.ID)

	// Verify DB-level isolation: contacts from account2 should not appear in account1's list
	var contacts1 []model.Contact
	err := s.DB().Where("account_id = ?", s.account.ID).Find(&contacts1).Error
	s.Require().NoError(err)
	assert.Len(s.T(), contacts1, 1, "Account 1 should only see its own contacts")
	assert.Equal(s.T(), "My Contact", contacts1[0].Name)

	var contacts2 []model.Contact
	err = s.DB().Where("account_id = ?", account2.ID).Find(&contacts2).Error
	s.Require().NoError(err)
	assert.Len(s.T(), contacts2, 1, "Account 2 should only see its own contacts")
	assert.Equal(s.T(), "Other Contact", contacts2[0].Name)
}

// ============================================================
// Inbox CRUD Tests
// ============================================================

// TestInboxListEmpty verifies listing inboxes when none exist.
func (s *CRME2ETestSuite) TestInboxListEmpty() {
	path := fmt.Sprintf("/api/v1/accounts/%d/inboxes", s.account.ID)
	resp := s.makeAuthRequest("GET", path, nil)

	result, err := parseResponseBody(resp)
	s.Require().NoError(err, "Should parse inbox list response")

	assert.Equal(s.T(), http.StatusOK, resp.StatusCode, "List inboxes should return 200")
	assert.Equal(s.T(), fmt.Sprintf("%d", s.account.ID), result["account_id"], "Response should contain account_id")

	meta, ok := result["meta"].(map[string]interface{})
	if ok {
		count := meta["count"]
		assert.Equal(s.T(), float64(0), count, "Empty inbox list should have count=0")
	}
}

// TestInboxCreate verifies creating a new inbox via the API.
func (s *CRME2ETestSuite) TestInboxCreate() {
	// Create inbox directly in DB for now (handler returns placeholder)
	inbox := s.CreateTestInbox("CRM Inbox", "web_widget", s.account.ID)

	// Verify in database
	var retrieved model.Inbox
	err := s.DB().First(&retrieved, inbox.ID).Error
	assert.NoError(s.T(), err, "Created inbox should exist in database")
	assert.Equal(s.T(), "CRM Inbox", retrieved.Name)
	assert.Equal(s.T(), "web_widget", retrieved.ChannelType)
	assert.Equal(s.T(), s.account.ID, retrieved.AccountID)
}

// TestInboxGet verifies retrieving a single inbox via the API.
func (s *CRME2ETestSuite) TestInboxGet() {
	inbox := s.CreateTestInbox("Support Inbox", "web_widget", s.account.ID)

	path := fmt.Sprintf("/api/v1/accounts/%d/inboxes/%d", s.account.ID, inbox.ID)
	resp := s.makeAuthRequest("GET", path, nil)

	result, err := parseResponseBody(resp)
	s.Require().NoError(err, "Should parse inbox get response")

	assert.Equal(s.T(), http.StatusOK, resp.StatusCode, "Get inbox should return 200")
	idStr, ok := result["id"].(string)
	s.Require().True(ok, "Response id should be a string")
	assert.Equal(s.T(), strconv.FormatUint(uint64(inbox.ID), 10), idStr, "Response should contain inbox id")
}

// TestInboxListWithInboxes verifies listing inboxes after creating some.
func (s *CRME2ETestSuite) TestInboxListWithInboxes() {
	s.CreateTestInbox("Widget Inbox", "web_widget", s.account.ID)
	s.CreateTestInbox("Telegram Inbox", "telegram", s.account.ID)

	path := fmt.Sprintf("/api/v1/accounts/%d/inboxes", s.account.ID)
	resp := s.makeAuthRequest("GET", path, nil)

	result, err := parseResponseBody(resp)
	s.Require().NoError(err, "Should parse inbox list response")

	assert.Equal(s.T(), http.StatusOK, resp.StatusCode, "List inboxes should return 200")
	assert.Equal(s.T(), fmt.Sprintf("%d", s.account.ID), result["account_id"], "Response should contain account_id")
}

// TestInboxDBCRUD verifies the full Inbox CRUD cycle at the DB level.
func (s *CRME2ETestSuite) TestInboxDBCRUD() {
	// Create
	inbox := &model.Inbox{
		AccountID:   s.account.ID,
		Name:        "DB CRUD Inbox",
		ChannelType: "web_widget",
		ChannelID:   1,
		Enabled:     true,
	}
	err := s.DB().Create(inbox).Error
	s.Require().NoError(err, "Should create inbox in DB")
	s.Require().NotZero(s.T(), inbox.ID, "Inbox should have an ID after creation")

	// Read
	var retrieved model.Inbox
	err = s.DB().Where("id = ? AND account_id = ?", inbox.ID, s.account.ID).First(&retrieved).Error
	s.Require().NoError(err, "Should find inbox by ID and account_id")
	assert.Equal(s.T(), "DB CRUD Inbox", retrieved.Name)
	assert.Equal(s.T(), "web_widget", retrieved.ChannelType)
	assert.Equal(s.T(), s.account.ID, retrieved.AccountID)
	assert.True(s.T(), retrieved.Enabled)

	// Update
	err = s.DB().Model(&retrieved).Updates(map[string]interface{}{
		"name":    "Updated Inbox",
		"enabled": false,
	}).Error
	s.Require().NoError(err, "Should update inbox")

	var updated model.Inbox
	err = s.DB().First(&updated, inbox.ID).Error
	s.Require().NoError(err, "Should find updated inbox")
	assert.Equal(s.T(), "Updated Inbox", updated.Name)
	assert.False(s.T(), updated.Enabled)

	// Delete (soft delete via GORM)
	err = s.DB().Delete(&updated).Error
	s.Require().NoError(err, "Should soft-delete inbox")

	// Verify soft delete
	var deleted model.Inbox
	err = s.DB().First(&deleted, inbox.ID).Error
	assert.Error(s.T(), err, "Soft-deleted inbox should not be found with First()")

	// Verify we can still find it with unscoped
	var unscoped model.Inbox
	err = s.DB().Unscoped().First(&unscoped, inbox.ID).Error
	assert.NoError(s.T(), err, "Soft-deleted inbox should be findable with Unscoped()")
	assert.NotNil(s.T(), unscoped.DeletedAt)
}

// TestInboxUpdateNotImplemented verifies the update endpoint returns 501.
func (s *CRME2ETestSuite) TestInboxUpdateNotImplemented() {
	inbox := s.CreateTestInbox("Update Inbox", "web_widget", s.account.ID)

	path := fmt.Sprintf("/api/v1/accounts/%d/inboxes/%d", s.account.ID, inbox.ID)
	resp := s.makeAuthRequest("PUT", path, map[string]interface{}{
		"name": "Updated Inbox",
	})

	assert.Equal(s.T(), http.StatusNotImplemented, resp.StatusCode, "Update should return 501")
}

// TestInboxDeleteNotImplemented verifies the delete endpoint returns 501.
func (s *CRME2ETestSuite) TestInboxDeleteNotImplemented() {
	inbox := s.CreateTestInbox("Delete Inbox", "web_widget", s.account.ID)

	path := fmt.Sprintf("/api/v1/accounts/%d/inboxes/%d", s.account.ID, inbox.ID)
	resp := s.makeAuthRequest("DELETE", path, nil)

	assert.Equal(s.T(), http.StatusNotImplemented, resp.StatusCode, "Delete should return 501")

	// Verify the inbox still exists in the DB
	var retrieved model.Inbox
	err := s.DB().First(&retrieved, inbox.ID).Error
	assert.NoError(s.T(), err, "Inbox should still exist in DB after 501 delete")
}

// TestInboxCrossAccountIsolation verifies that inboxes from one account
// are not visible to another account.
func (s *CRME2ETestSuite) TestInboxCrossAccountIsolation() {
	account2 := s.CreateTestAccount("Other Org 2")
	s.CreateTestInbox("Other Inbox", "telegram", account2.ID)
	s.CreateTestInbox("My Inbox", "web_widget", s.account.ID)

	// Verify DB-level isolation
	var inboxes1 []model.Inbox
	err := s.DB().Where("account_id = ?", s.account.ID).Find(&inboxes1).Error
	s.Require().NoError(err)
	assert.Len(s.T(), inboxes1, 1, "Account 1 should only see its own inboxes")
	assert.Equal(s.T(), "My Inbox", inboxes1[0].Name)

	var inboxes2 []model.Inbox
	err = s.DB().Where("account_id = ?", account2.ID).Find(&inboxes2).Error
	s.Require().NoError(err)
	assert.Len(s.T(), inboxes2, 1, "Account 2 should only see its own inboxes")
	assert.Equal(s.T(), "Other Inbox", inboxes2[0].Name)
}

// TestInboxChannelTypes verifies creating inboxes with different channel types.
func (s *CRME2ETestSuite) TestInboxChannelTypes() {
	channelTypes := []string{"web_widget", "telegram", "facebook", "whatsapp", "email", "api"}

	for i, ct := range channelTypes {
		inbox := &model.Inbox{
			AccountID:   s.account.ID,
			Name:        fmt.Sprintf("%s Inbox", ct),
			ChannelType: ct,
			ChannelID:   uint(i + 1),
		}
		err := s.DB().Create(inbox).Error
		s.Require().NoError(err, "Should create inbox with channel_type=%s", ct)
		assert.Equal(s.T(), ct, inbox.ChannelType)
		assert.NotZero(s.T(), inbox.ID)
	}

	// Verify all 6 inboxes were created
	var count int64
	err := s.DB().Model(&model.Inbox{}).Where("account_id = ?", s.account.ID).Count(&count).Error
	s.Require().NoError(err)
	assert.Equal(s.T(), int64(6), count, "Should have 6 inboxes with different channel types")
}

// ============================================================
// Contact-Inbox Relationship Tests
// ============================================================

// TestContactInboxRelationship verifies the ContactInbox association.
func (s *CRME2ETestSuite) TestContactInboxRelationship() {
	contact := s.CreateTestContact("Related Contact", "related@test.com", s.account.ID)
	inbox := s.CreateTestInbox("Related Inbox", "web_widget", s.account.ID)

	// Create ContactInbox association
	contactInbox := &model.ContactInbox{
		ContactID: contact.ID,
		InboxID:   inbox.ID,
		SourceID:  "test_source_id",
	}
	err := s.DB().Create(contactInbox).Error
	s.Require().NoError(err, "Should create ContactInbox association")

	// Verify the association exists
	var retrieved model.ContactInbox
	err = s.DB().Where("contact_id = ? AND inbox_id = ?", contact.ID, inbox.ID).First(&retrieved).Error
	s.Require().NoError(err, "Should find ContactInbox association")
	assert.Equal(s.T(), contact.ID, retrieved.ContactID)
	assert.Equal(s.T(), inbox.ID, retrieved.InboxID)
	assert.Equal(s.T(), "test_source_id", retrieved.SourceID)

	// Verify we can find contacts for an inbox
	var contactInboxes []model.ContactInbox
	err = s.DB().Where("inbox_id = ?", inbox.ID).Find(&contactInboxes).Error
	s.Require().NoError(err)
	assert.Len(s.T(), contactInboxes, 1, "Should find 1 contact associated with the inbox")

	// Verify we can find inboxes for a contact
	err = s.DB().Where("contact_id = ?", contact.ID).Find(&contactInboxes).Error
	s.Require().NoError(err)
	assert.Len(s.T(), contactInboxes, 1, "Should find 1 inbox associated with the contact")
}

// ============================================================
// Auth + CRM Integration Tests
// ============================================================

// TestCRMUnauthenticatedAccess verifies that CRM endpoints require auth.
func (s *CRME2ETestSuite) TestCRMUnauthenticatedAccess() {
	path := fmt.Sprintf("/api/v1/accounts/%d/contacts", s.account.ID)
	req, err := http.NewRequest("GET", fmt.Sprintf("%s%s", s.ServerURL(), path), nil)
	s.Require().NoError(err)
	// No Authorization header
	resp, err := s.httpClient.Do(req)
	s.Require().NoError(err)

	assert.Equal(s.T(), http.StatusUnauthorized, resp.StatusCode, "Unauthenticated request should return 401")
	resp.Body.Close()

	// Same for inboxes
	path = fmt.Sprintf("/api/v1/accounts/%d/inboxes", s.account.ID)
	req, err = http.NewRequest("GET", fmt.Sprintf("%s%s", s.ServerURL(), path), nil)
	s.Require().NoError(err)
	resp, err = s.httpClient.Do(req)
	s.Require().NoError(err)

	assert.Equal(s.T(), http.StatusUnauthorized, resp.StatusCode, "Unauthenticated inbox request should return 401")
	resp.Body.Close()
}

// TestCRMFlowIntegration verifies the full CRM workflow:
// Create Inbox → Create Contact → Associate Contact with Inbox
func (s *CRME2ETestSuite) TestCRMFlowIntegration() {
	// Step 1: Create an inbox
	inbox := s.CreateTestInbox("Integration Inbox", "web_widget", s.account.ID)
	s.Require().NotZero(s.T(), inbox.ID)

	// Step 2: Create a contact
	contact := s.CreateTestContact("Integration Contact", "integration@test.com", s.account.ID)
	s.Require().NotZero(s.T(), contact.ID)

	// Step 3: Associate contact with inbox
	contactInbox := &model.ContactInbox{
		ContactID: contact.ID,
		InboxID:   inbox.ID,
		SourceID:  "e2e_source_id",
	}
	err := s.DB().Create(contactInbox).Error
	s.Require().NoError(err)

	// Step 4: Verify the full chain
	var ci model.ContactInbox
	err = s.DB().Where("contact_id = ? AND inbox_id = ?", contact.ID, inbox.ID).First(&ci).Error
	s.Require().NoError(err)

	// Verify inbox belongs to the account
	var dbInbox model.Inbox
	err = s.DB().First(&dbInbox, inbox.ID).Error
	s.Require().NoError(err)
	assert.Equal(s.T(), s.account.ID, dbInbox.AccountID)

	// Verify contact belongs to the account
	var dbContact model.Contact
	err = s.DB().First(&dbContact, contact.ID).Error
	s.Require().NoError(err)
	assert.Equal(s.T(), s.account.ID, dbContact.AccountID)

	// Step 5: Verify API access to the inbox
	path := fmt.Sprintf("/api/v1/accounts/%d/inboxes/%d", s.account.ID, inbox.ID)
	resp := s.makeAuthRequest("GET", path, nil)
	assert.Equal(s.T(), http.StatusOK, resp.StatusCode, "Should be able to retrieve inbox via API")

	// Step 6: Verify API access to the contact
	path = fmt.Sprintf("/api/v1/accounts/%d/contacts/%d", s.account.ID, contact.ID)
	resp = s.makeAuthRequest("GET", path, nil)
	assert.Equal(s.T(), http.StatusOK, resp.StatusCode, "Should be able to retrieve contact via API")
}

// ============================================================
// Suite Entry Point
// ============================================================

// TestCRME2ESuite runs the CRM end-to-end test suite.
func TestCRME2ESuite(t *testing.T) {
	suite.Run(t, &CRME2ETestSuite{})
}