package v1

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

// TestDDNSStatus_ReturnsOK verifies the status endpoint returns 200 with the
// correct JSON structure. A freshly-created runner (not yet started) reports
// enabled=false.
func TestDDNSStatus_ReturnsOK(t *testing.T) {
	api, _ := setupTestAPI(t)

	req := httptest.NewRequest("GET", "/api/v1/ddns/status", nil)
	w := httptest.NewRecorder()

	api.DDNSStatus(w, req)

	if w.Code != http.StatusOK {
		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
	}

	var resp map[string]any
	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
		t.Fatalf("invalid JSON: %v", err)
	}

	// enabled must be present and false for an unstarted runner
	enabled, exists := resp["enabled"]
	if !exists {
		t.Error("expected 'enabled' field in response")
	}
	if b, _ := enabled.(bool); b {
		t.Error("expected enabled=false for unstarted runner")
	}
}

// TestDDNSStatus_HasRequiredFields verifies all status fields are present in the
// JSON response.
func TestDDNSStatus_HasRequiredFields(t *testing.T) {
	api, _ := setupTestAPI(t)

	req := httptest.NewRequest("GET", "/api/v1/ddns/status", nil)
	w := httptest.NewRecorder()

	api.DDNSStatus(w, req)

	var resp map[string]any
	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
		t.Fatalf("invalid JSON: %v", err)
	}

	for _, field := range []string{"enabled", "currentIP", "lastChecked", "lastUpdated"} {
		if _, ok := resp[field]; !ok {
			t.Errorf("missing expected field %q in status response", field)
		}
	}
}

// TestDDNSTrigger_Returns200 verifies the trigger endpoint sends to the runner's
// channel and returns a success message.
func TestDDNSTrigger_Returns200(t *testing.T) {
	api, _ := setupTestAPI(t)

	req := httptest.NewRequest("POST", "/api/v1/ddns/trigger", nil)
	w := httptest.NewRecorder()

	api.DDNSTrigger(w, req)

	if w.Code != http.StatusOK {
		t.Fatalf("expected 200, got %d: %s", w.Code, w.Body.String())
	}

	var resp map[string]any
	if err := json.Unmarshal(w.Body.Bytes(), &resp); err != nil {
		t.Fatalf("invalid JSON: %v", err)
	}
	if resp["message"] == nil {
		t.Error("expected message field in response")
	}
}