//go:build !nointegration
// +build !nointegration

package temporal

import (
	"bytes"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
)

func init() {
	// Skip all tests in this file if Temporal server not available
	if !isTemporalAvailable() {
		// Tests will be skipped
	}
}


// TestHandler_StartWorkflow tests the START_WORKFLOW operation
func TestHandler_StartWorkflow(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "START_WORKFLOW",
		Namespace: "default",
		Payload: map[string]interface{}{
			"workflow_id":   "test_workflow_1",
			"workflow_type": "TestWorkflow",
			"task_queue":    "test_queue",
			"input": map[string]interface{}{
				"test_data": "value",
			},
		},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected status 200, got %d", w.Code)
	}

	var response ResponsePayload
	json.NewDecoder(w.Body).Decode(&response)

	if !response.Success {
		t.Errorf("Expected success response")
	}

	if response.Action != "START_WORKFLOW" {
		t.Errorf("Expected action START_WORKFLOW")
	}
}

// TestHandler_DescribeWorkflow tests the DESCRIBE_WORKFLOW operation
func TestHandler_DescribeWorkflow(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "DESCRIBE_WORKFLOW",
		Namespace: "default",
		Payload: map[string]interface{}{
			"workflow_id": "test_workflow_1",
			"run_id":      "run_abc123",
		},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected status 200, got %d", w.Code)
	}

	var response ResponsePayload
	json.NewDecoder(w.Body).Decode(&response)

	if response.Action != "DESCRIBE_WORKFLOW" {
		t.Errorf("Expected action DESCRIBE_WORKFLOW")
	}
}

// TestHandler_ListWorkflows tests the LIST_WORKFLOWS operation
func TestHandler_ListWorkflows(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "LIST_WORKFLOWS",
		Namespace: "default",
		Payload: map[string]interface{}{
			"status":    "RUNNING",
			"page_size": 50,
		},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected status 200, got %d", w.Code)
	}
}

// TestHandler_RequestValidation tests request validation
func TestHandler_RequestValidation(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	tests := []struct {
		name           string
		method         string
		body           interface{}
		expectedStatus int
	}{
		{
			name:           "Invalid method (GET)",
			method:         "GET",
			body:           map[string]interface{}{},
			expectedStatus: http.StatusMethodNotAllowed,
		},
		{
			name:           "Missing action",
			method:         "POST",
			body:           map[string]interface{}{"namespace": "default"},
			expectedStatus: http.StatusBadRequest,
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			body, _ := json.Marshal(test.body)
			req := httptest.NewRequest(test.method, "/workflow", bytes.NewReader(body))
			w := httptest.NewRecorder()

			handler.handleWorkflow(w, req)

			if w.Code != test.expectedStatus {
				t.Errorf("Expected status %d, got %d", test.expectedStatus, w.Code)
			}
		})
	}
}

// TestHandler_SignalWorkflow tests the SIGNAL_WORKFLOW operation
func TestHandler_SignalWorkflow(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "SIGNAL_WORKFLOW",
		Namespace: "default",
		Payload: map[string]interface{}{
			"workflow_id": "test_workflow_1",
			"run_id":      "run_abc123",
			"signal_name": "payment_received",
			"input": map[string]interface{}{
				"amount": 99.99,
			},
		},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected status 200, got %d", w.Code)
	}

	var response ResponsePayload
	json.NewDecoder(w.Body).Decode(&response)

	if response.Action != "SIGNAL_WORKFLOW" {
		t.Errorf("Expected action SIGNAL_WORKFLOW")
	}
}

// TestHandler_QueryWorkflow tests the QUERY_WORKFLOW operation
func TestHandler_QueryWorkflow(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "QUERY_WORKFLOW",
		Namespace: "default",
		Payload: map[string]interface{}{
			"workflow_id": "test_workflow_1",
			"run_id":      "run_abc123",
			"query_type":  "get_status",
		},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected status 200, got %d", w.Code)
	}

	var response ResponsePayload
	json.NewDecoder(w.Body).Decode(&response)

	if response.Action != "QUERY_WORKFLOW" {
		t.Errorf("Expected action QUERY_WORKFLOW")
	}
}

// TestHandler_TerminateWorkflow tests the TERMINATE_WORKFLOW operation
func TestHandler_TerminateWorkflow(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "TERMINATE_WORKFLOW",
		Namespace: "default",
		Payload: map[string]interface{}{
			"workflow_id": "test_workflow_1",
			"run_id":      "run_abc123",
			"reason":      "User requested cancellation",
		},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected status 200, got %d", w.Code)
	}
}

// TestHandler_CancelWorkflow tests the CANCEL_WORKFLOW operation
func TestHandler_CancelWorkflow(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "CANCEL_WORKFLOW",
		Namespace: "default",
		Payload: map[string]interface{}{
			"workflow_id": "test_workflow_1",
			"run_id":      "run_abc123",
		},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected status 200, got %d", w.Code)
	}

	var response ResponsePayload
	json.NewDecoder(w.Body).Decode(&response)

	if response.Action != "CANCEL_WORKFLOW" {
		t.Errorf("Expected action CANCEL_WORKFLOW")
	}
}

// TestHandler_ResponseFormat tests that responses follow the standard format
func TestHandler_ResponseFormat(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "DESCRIBE_NAMESPACE",
		Namespace: "default",
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	var response ResponsePayload
	json.NewDecoder(w.Body).Decode(&response)

	if response.Timestamp.IsZero() {
		t.Errorf("Expected timestamp to be set")
	}

	if response.Action != "DESCRIBE_NAMESPACE" {
		t.Errorf("Expected action to be in response")
	}
}

// TestHandler_AllWorkflowOperations tests that all workflow operations are recognized
func TestHandler_AllWorkflowOperations(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	operations := []string{
		"START_WORKFLOW",
		"DESCRIBE_WORKFLOW",
		"LIST_WORKFLOWS",
		"GET_WORKFLOW_HISTORY",
		"TERMINATE_WORKFLOW",
		"CANCEL_WORKFLOW",
		"SIGNAL_WORKFLOW",
		"QUERY_WORKFLOW",
		"RESET_WORKFLOW",
		"UPDATE_WORKFLOW",
	}

	for _, op := range operations {
		t.Run(op, func(t *testing.T) {
			reqBody := RequestPayload{
				Action:    op,
				Namespace: "default",
				Payload: map[string]interface{}{
					"workflow_id": "test",
				},
			}

			body, _ := json.Marshal(reqBody)
			req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
			w := httptest.NewRecorder()

			handler.handleWorkflow(w, req)

			var response ResponsePayload
			json.NewDecoder(w.Body).Decode(&response)

			if response.Action != op {
				t.Errorf("Operation %s not routed correctly", op)
			}
		})
	}
}

// TestHandler_AllActivityOperations tests that all activity operations are recognized
func TestHandler_AllActivityOperations(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	operations := []string{
		"HEARTBEAT_ACTIVITY",
		"COMPLETE_ACTIVITY",
		"FAIL_ACTIVITY",
	}

	for _, op := range operations {
		t.Run(op, func(t *testing.T) {
			reqBody := RequestPayload{
				Action:    op,
				Namespace: "default",
				Payload: map[string]interface{}{
					"task_token": "base64_encoded_token",
				},
			}

			body, _ := json.Marshal(reqBody)
			req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
			w := httptest.NewRecorder()

			handler.handleWorkflow(w, req)

			var response ResponsePayload
			json.NewDecoder(w.Body).Decode(&response)

			if response.Action != op {
				t.Errorf("Operation %s not routed correctly", op)
			}
		})
	}
}

// TestHandler_AllNamespaceOperations tests that all namespace operations are recognized
func TestHandler_AllNamespaceOperations(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	operations := []string{
		"LIST_NAMESPACES",
		"DESCRIBE_NAMESPACE",
		"CREATE_NAMESPACE",
		"UPDATE_NAMESPACE",
		"DELETE_NAMESPACE",
	}

	for _, op := range operations {
		t.Run(op, func(t *testing.T) {
			reqBody := RequestPayload{
				Action:    op,
				Namespace: "default",
				Payload:   map[string]interface{}{},
			}

			body, _ := json.Marshal(reqBody)
			req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
			w := httptest.NewRecorder()

			handler.handleWorkflow(w, req)

			var response ResponsePayload
			json.NewDecoder(w.Body).Decode(&response)

			if response.Action != op {
				t.Errorf("Operation %s not routed correctly", op)
			}
		})
	}
}

// TestHandler_AllClusterOperations tests that all cluster operations are recognized
func TestHandler_AllClusterOperations(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	operations := []string{
		"GET_CLUSTER_INFO",
		"LIST_CLUSTER_MEMBERS",
		"GET_SYSTEM_INFO",
	}

	for _, op := range operations {
		t.Run(op, func(t *testing.T) {
			reqBody := RequestPayload{
				Action:    op,
				Namespace: "default",
				Payload:   map[string]interface{}{},
			}

			body, _ := json.Marshal(reqBody)
			req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
			w := httptest.NewRecorder()

			handler.handleWorkflow(w, req)

			var response ResponsePayload
			json.NewDecoder(w.Body).Decode(&response)

			if response.Action != op {
				t.Errorf("Operation %s not routed correctly", op)
			}
		})
	}
}

// TestHandler_MissingRequiredFields tests validation of required fields
func TestHandler_MissingRequiredFields(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	tests := []struct {
		name      string
		operation string
		payload   map[string]interface{}
		shouldFail bool
	}{
		{
			name:      "START_WORKFLOW missing workflow_id",
			operation: "START_WORKFLOW",
			payload: map[string]interface{}{
				"workflow_type": "TestWorkflow",
				"task_queue":    "test_queue",
			},
			shouldFail: true,
		},
		{
			name:      "DESCRIBE_WORKFLOW missing workflow_id",
			operation: "DESCRIBE_WORKFLOW",
			payload:   map[string]interface{}{},
			shouldFail: true,
		},
		{
			name:      "SIGNAL_WORKFLOW missing signal_name",
			operation: "SIGNAL_WORKFLOW",
			payload: map[string]interface{}{
				"workflow_id": "test",
				"run_id":      "run",
			},
			shouldFail: true,
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			reqBody := RequestPayload{
				Action:    test.operation,
				Namespace: "default",
				Payload:   test.payload,
			}

			body, _ := json.Marshal(reqBody)
			req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
			w := httptest.NewRecorder()

			handler.handleWorkflow(w, req)

			if test.shouldFail {
				if w.Code == http.StatusOK {
					var response ResponsePayload
					json.NewDecoder(w.Body).Decode(&response)
					if response.Success {
						t.Errorf("Expected request to fail for %s", test.name)
					}
				}
			}
		})
	}
}

// TestHandler_RequestMethod tests HTTP method validation
func TestHandler_RequestMethod(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	methods := []string{"GET", "PUT", "DELETE", "PATCH"}

	for _, method := range methods {
		t.Run(method, func(t *testing.T) {
			req := httptest.NewRequest(method, "/workflow", nil)
			w := httptest.NewRecorder()

			handler.handleWorkflow(w, req)

			if w.Code != http.StatusMethodNotAllowed {
				t.Errorf("Expected 405 for %s method, got %d", method, w.Code)
			}
		})
	}
}

// TestHandler_UnknownAction tests handling of unknown actions
func TestHandler_UnknownAction(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "UNKNOWN_ACTION",
		Namespace: "default",
		Payload:   map[string]interface{}{},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	if w.Code != http.StatusBadRequest {
		t.Errorf("Expected 400 for unknown action, got %d", w.Code)
	}

	var response ResponsePayload
	json.NewDecoder(w.Body).Decode(&response)

	if response.Error != "INVALID_ACTION" {
		t.Errorf("Expected INVALID_ACTION error")
	}
}

// TestHandler_HealthEndpoint tests the health check endpoint
func TestHandler_HealthEndpoint(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	req := httptest.NewRequest("GET", "/workflow/health", nil)
	w := httptest.NewRecorder()

	handler.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected 200 for health check, got %d", w.Code)
	}
}

// TestHandler_MetricsEndpoint tests the metrics endpoint
func TestHandler_MetricsEndpoint(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	req := httptest.NewRequest("GET", "/workflow/metrics", nil)
	w := httptest.NewRecorder()

	handler.ServeHTTP(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected 200 for metrics, got %d", w.Code)
	}
}

// TestHandler_NotFoundEndpoint tests 404 handling
func TestHandler_NotFoundEndpoint(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	req := httptest.NewRequest("GET", "/unknown", nil)
	w := httptest.NewRecorder()

	handler.ServeHTTP(w, req)

	if w.Code != http.StatusNotFound {
		t.Errorf("Expected 404 for unknown endpoint, got %d", w.Code)
	}
}

// TestHandler_NamespaceDefaulting tests that namespace defaults to "default"
func TestHandler_NamespaceDefaulting(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:  "DESCRIBE_WORKFLOW",
		Payload: map[string]interface{}{"workflow_id": "test"},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	var response ResponsePayload
	json.NewDecoder(w.Body).Decode(&response)

	if response.Namespace != "default" {
		t.Errorf("Expected namespace to default to 'default', got %s", response.Namespace)
	}
}

// TestHandler_AllSearchAttributeOperations tests search attribute operations
func TestHandler_AllSearchAttributeOperations(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	operations := []string{
		"LIST_SEARCH_ATTRIBUTES",
		"ADD_SEARCH_ATTRIBUTES",
	}

	for _, op := range operations {
		t.Run(op, func(t *testing.T) {
			reqBody := RequestPayload{
				Action:    op,
				Namespace: "default",
				Payload:   map[string]interface{}{},
			}

			body, _ := json.Marshal(reqBody)
			req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
			w := httptest.NewRecorder()

			handler.handleWorkflow(w, req)

			var response ResponsePayload
			json.NewDecoder(w.Body).Decode(&response)

			if response.Action != op {
				t.Errorf("Operation %s not routed correctly", op)
			}
		})
	}
}

// TestHandler_ListTaskQueuesOperation tests task queue operation
func TestHandler_ListTaskQueuesOperation(t *testing.T) {
	if !isTemporalAvailable() { t.Skip("Temporal server not available"); return }
	handler := NewHandler("localhost:7233")

	reqBody := RequestPayload{
		Action:    "LIST_TASK_QUEUES",
		Namespace: "default",
		Payload: map[string]interface{}{
			"queue_type": "WORKFLOW",
		},
	}

	body, _ := json.Marshal(reqBody)
	req := httptest.NewRequest("POST", "/workflow", bytes.NewReader(body))
	w := httptest.NewRecorder()

	handler.handleWorkflow(w, req)

	if w.Code != http.StatusOK {
		t.Errorf("Expected 200, got %d", w.Code)
	}

	var response ResponsePayload
	json.NewDecoder(w.Body).Decode(&response)

	if response.Action != "LIST_TASK_QUEUES" {
		t.Errorf("Expected LIST_TASK_QUEUES action")
	}
}