fix(handler): update sendFormattedResponse to include table name and model

pkg/restheadspec/detail_response_test.go

@@ -0,0 +1,209 @@
+package restheadspec
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+)
+
+// detailTestModel is a simple model with gorm column/type tags for detail format tests.
+type detailTestModel struct {
+	ID          int64   `bun:"rid,pk" gorm:"column:rid;primaryKey" json:"rid"`
+	Name        string  `bun:"name" gorm:"column:name;type:citext" json:"name"`
+	Description *string `bun:"description" gorm:"column:description;type:text;nullable" json:"description"`
+	Score       float64 `bun:"score" gorm:"column:score;type:numeric" json:"score"`
+	Active      bool    `bun:"active" gorm:"column:active;type:boolean;not null" json:"active"`
+}
+
+func TestSendFormattedResponse_DetailFormat(t *testing.T) {
+	handler := &Handler{}
+
+	name := "hello"
+	items := []*detailTestModel{
+		{ID: 1, Name: "first", Description: &name, Score: 1.5, Active: true},
+		{ID: 2, Name: "second", Description: nil, Score: 2.0, Active: false},
+	}
+	metadata := &common.Metadata{
+		Total:    36,
+		Count:    2,
+		Filtered: 36,
+		Limit:    10,
+		Offset:   0,
+	}
+	options := ExtendedRequestOptions{
+		ResponseFormat: "detail",
+	}
+
+	mockWriter := &MockTestResponseWriter{headers: make(map[string]string)}
+	handler.sendFormattedResponse(mockWriter, items, metadata, "myschema.myentity", detailTestModel{}, options)
+
+	if mockWriter.statusCode != 200 {
+		t.Fatalf("expected status 200, got %d", mockWriter.statusCode)
+	}
+
+	body, err := json.Marshal(mockWriter.body)
+	if err != nil {
+		t.Fatalf("failed to marshal body: %v", err)
+	}
+
+	var resp map[string]json.RawMessage
+	if err := json.Unmarshal(body, &resp); err != nil {
+		t.Fatalf("failed to unmarshal response: %v", err)
+	}
+
+	t.Run("top-level keys", func(t *testing.T) {
+		for _, key := range []string{"count", "fields", "items", "tablename", "tableprefix", "total"} {
+			if _, ok := resp[key]; !ok {
+				t.Errorf("missing key %q in detail response", key)
+			}
+		}
+	})
+
+	t.Run("count and total are string", func(t *testing.T) {
+		var count, total string
+		if err := json.Unmarshal(resp["count"], &count); err != nil {
+			t.Errorf("count is not a string: %v", err)
+		}
+		if err := json.Unmarshal(resp["total"], &total); err != nil {
+			t.Errorf("total is not a string: %v", err)
+		}
+		if count != "2" {
+			t.Errorf("expected count %q, got %q", "2", count)
+		}
+		if total != "36" {
+			t.Errorf("expected total %q, got %q", "36", total)
+		}
+	})
+
+	t.Run("tablename and tableprefix", func(t *testing.T) {
+		var tablename, tableprefix string
+		json.Unmarshal(resp["tablename"], &tablename)
+		json.Unmarshal(resp["tableprefix"], &tableprefix)
+		if tablename != "myschema.myentity" {
+			t.Errorf("expected tablename %q, got %q", "myschema.myentity", tablename)
+		}
+		if tableprefix != "myentity" {
+			t.Errorf("expected tableprefix %q, got %q", "myentity", tableprefix)
+		}
+	})
+
+	t.Run("items contains data", func(t *testing.T) {
+		var itemSlice []map[string]interface{}
+		if err := json.Unmarshal(resp["items"], &itemSlice); err != nil {
+			t.Fatalf("items is not an array: %v", err)
+		}
+		if len(itemSlice) != 2 {
+			t.Errorf("expected 2 items, got %d", len(itemSlice))
+		}
+	})
+
+	t.Run("fields contains column metadata", func(t *testing.T) {
+		var fields []map[string]interface{}
+		if err := json.Unmarshal(resp["fields"], &fields); err != nil {
+			t.Fatalf("fields is not an array: %v", err)
+		}
+		if len(fields) == 0 {
+			t.Fatal("expected fields to be non-empty")
+		}
+
+		bySQL := make(map[string]map[string]interface{}, len(fields))
+		for _, f := range fields {
+			if sqlname, ok := f["sqlname"].(string); ok {
+				bySQL[sqlname] = f
+			}
+		}
+
+		// Check required field keys are present
+		for _, f := range fields {
+			for _, key := range []string{"name", "datatype", "sqlname", "sqldatatype", "sqlkey", "nullable"} {
+				if _, ok := f[key]; !ok {
+					t.Errorf("field %v missing key %q", f, key)
+				}
+			}
+		}
+
+		// Validate specific columns
+		if col, ok := bySQL["rid"]; ok {
+			if col["sqlkey"] != "primary_key" {
+				t.Errorf("rid: expected sqlkey %q, got %v", "primary_key", col["sqlkey"])
+			}
+		} else {
+			t.Error("expected column 'rid' in fields")
+		}
+
+		if col, ok := bySQL["name"]; ok {
+			if col["sqldatatype"] != "citext" {
+				t.Errorf("name: expected sqldatatype %q, got %v", "citext", col["sqldatatype"])
+			}
+			if col["nullable"] != false {
+				t.Errorf("name: expected nullable false, got %v", col["nullable"])
+			}
+		} else {
+			t.Error("expected column 'name' in fields")
+		}
+
+		if col, ok := bySQL["description"]; ok {
+			if col["sqldatatype"] != "text" {
+				t.Errorf("description: expected sqldatatype %q, got %v", "text", col["sqldatatype"])
+			}
+			if col["nullable"] != true {
+				t.Errorf("description: expected nullable true, got %v", col["nullable"])
+			}
+		} else {
+			t.Error("expected column 'description' in fields")
+		}
+	})
+}
+
+func TestSendFormattedResponse_DetailFormat_EmptyItems(t *testing.T) {
+	handler := &Handler{}
+	metadata := &common.Metadata{Total: 0, Count: 0, Filtered: 0}
+	options := ExtendedRequestOptions{ResponseFormat: "detail"}
+
+	mockWriter := &MockTestResponseWriter{headers: make(map[string]string)}
+	handler.sendFormattedResponse(mockWriter, []*detailTestModel{}, metadata, "s.t", detailTestModel{}, options)
+
+	body, _ := json.Marshal(mockWriter.body)
+	var resp map[string]json.RawMessage
+	json.Unmarshal(body, &resp)
+
+	var count, total string
+	json.Unmarshal(resp["count"], &count)
+	json.Unmarshal(resp["total"], &total)
+
+	if count != "0" || total != "0" {
+		t.Errorf("expected count/total both %q, got count=%q total=%q", "0", count, total)
+	}
+
+	var fields []interface{}
+	json.Unmarshal(resp["fields"], &fields)
+	if len(fields) == 0 {
+		t.Error("fields should still list column metadata even when items is empty")
+	}
+}
+
+func TestBuildDetailFields_SkipsRelations(t *testing.T) {
+	type child struct {
+		ID int64 `bun:"id,pk" gorm:"column:id;primaryKey" json:"id"`
+	}
+	type parent struct {
+		ID       int64   `bun:"id,pk" gorm:"column:id;primaryKey" json:"id"`
+		Name     string  `bun:"name" gorm:"column:name" json:"name"`
+		Children []child `bun:"rel:has-many" json:"children"`
+		Child    *child  `bun:"rel:has-one" json:"child"`
+	}
+
+	handler := &Handler{}
+	fields := handler.buildDetailFields(parent{})
+
+	for _, f := range fields {
+		if f.SQLName == "children" || f.SQLName == "child" {
+			t.Errorf("relation field %q should not appear in detail fields", f.SQLName)
+		}
+	}
+
+	if len(fields) != 2 {
+		t.Errorf("expected 2 scalar fields (id, name), got %d", len(fields))
+	}
+}

pkg/restheadspec/empty_result_test.go

@@ -95,7 +95,7 @@ func TestSendFormattedResponse_NoDataFoundHeader(t *testing.T) {
 
 	// Test with empty data
 	emptyData := []interface{}{}
-	handler.sendFormattedResponse(mockWriter, emptyData, metadata, options)
+	handler.sendFormattedResponse(mockWriter, emptyData, metadata, "", nil, options)
 
 	// Check if X-No-Data-Found header was set
 	if mockWriter.headers["X-No-Data-Found"] != "true" {

pkg/restheadspec/handler.go

@@ -289,7 +289,8 @@ func (h *Handler) HandleGet(w common.ResponseWriter, r common.Request, params ma
 		Limit:    0,
 		Offset:   0,
 	}
-	h.sendFormattedResponse(w, tableMetadata, responseMetadata, options)
+	tableName := h.getTableName(schema, entity, model)
+	h.sendFormattedResponse(w, tableMetadata, responseMetadata, tableName, model, options)
 }
 
 // handleMeta processes meta operation requests
@@ -848,7 +849,7 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 		return
 	}
 
-	h.sendFormattedResponse(w, modelPtr, metadata, options)
+	h.sendFormattedResponse(w, modelPtr, metadata, tableName, model, options)
 }
 
 // applyPreloadWithRecursion applies a preload with support for ComputedQL and recursive preloading
@@ -2585,8 +2586,103 @@ func (h *Handler) normalizeResultArray(data interface{}) interface{} {
 	return data
 }
 
-// sendFormattedResponse sends response with formatting options
+// buildDetailFields returns the field metadata list for the detail API format,
-func (h *Handler) sendFormattedResponse(w common.ResponseWriter, data interface{}, metadata *common.Metadata, options ExtendedRequestOptions) {
+// containing only non-relation scalar columns derived from the model's struct tags.
+func (h *Handler) buildDetailFields(model interface{}) []reflection.ModelFieldDetail {
+	if model == nil {
+		return []reflection.ModelFieldDetail{}
+	}
+
+	modelType := reflect.TypeOf(model)
+	for modelType != nil && (modelType.Kind() == reflect.Ptr || modelType.Kind() == reflect.Slice || modelType.Kind() == reflect.Array) {
+		modelType = modelType.Elem()
+	}
+	if modelType == nil || modelType.Kind() != reflect.Struct {
+		return []reflection.ModelFieldDetail{}
+	}
+
+	fields := make([]reflection.ModelFieldDetail, 0, modelType.NumField())
+	for i := 0; i < modelType.NumField(); i++ {
+		field := modelType.Field(i)
+		if !field.IsExported() {
+			continue
+		}
+
+		jsonTag := field.Tag.Get("json")
+		if jsonTag == "-" {
+			continue
+		}
+
+		// Skip relation fields (slices, structs that aren't time.Time, ptrs to struct)
+		ft := field.Type
+		if ft.Kind() == reflect.Ptr {
+			ft = ft.Elem()
+		}
+		if ft.Kind() == reflect.Slice ||
+			(ft.Kind() == reflect.Struct && ft.Name() != "Time") {
+			continue
+		}
+
+		jsonName := strings.Split(jsonTag, ",")[0]
+		if jsonName == "" {
+			jsonName = field.Name
+		}
+
+		gormTag := field.Tag.Get("gorm")
+		sqlName := fnFindTagVal(gormTag, "column:")
+		if sqlName == "" {
+			sqlName = jsonName
+		}
+
+		sqlDataType := fnFindTagVal(gormTag, "type:")
+
+		var sqlKey string
+		gormLower := strings.ToLower(gormTag)
+		switch {
+		case strings.Contains(gormLower, "identity") || strings.Contains(gormLower, "primary_key") || strings.Contains(gormLower, "primarykey"):
+			sqlKey = "primary_key"
+		case strings.Contains(gormLower, "uniqueindex"):
+			sqlKey = "uniqueindex"
+		case strings.Contains(gormLower, "unique"):
+			sqlKey = "unique"
+		}
+
+		nullable := field.Type.Kind() == reflect.Ptr
+		if strings.Contains(gormLower, "not null") {
+			nullable = false
+		} else if strings.Contains(gormLower, "nullable") || strings.Contains(gormLower, ",null") {
+			nullable = true
+		}
+
+		fields = append(fields, reflection.ModelFieldDetail{
+			Name:        jsonName,
+			DataType:    h.getColumnType(field.Type),
+			SQLName:     sqlName,
+			SQLDataType: sqlDataType,
+			SQLKey:      sqlKey,
+			Nullable:    nullable,
+		})
+	}
+	return fields
+}
+
+// fnFindTagVal extracts a value from a semicolon-separated struct tag string.
+func fnFindTagVal(tag, key string) string {
+	lower := strings.ToLower(tag)
+	idx := strings.Index(lower, strings.ToLower(key))
+	if idx < 0 {
+		return ""
+	}
+	val := tag[idx+len(key):]
+	if end := strings.Index(val, ";"); end >= 0 {
+		val = val[:end]
+	}
+	return val
+}
+
+// sendFormattedResponse sends response with formatting options.
+// model is used when ResponseFormat is "detail" to generate the fields metadata list.
+func (h *Handler) sendFormattedResponse(w common.ResponseWriter, data interface{}, metadata *common.Metadata, tableName string, model interface{}, options ExtendedRequestOptions) {
 	// Handle nil data - convert to empty array
 	if data == nil {
 		data = []interface{}{}
@@ -2639,8 +2735,29 @@ func (h *Handler) sendFormattedResponse(w common.ResponseWriter, data interface{
 		if err := w.WriteJSON(response); err != nil {
 			logger.Error("Failed to write JSON response: %v", err)
 		}
+	case "detail":
+		// Detail format: { count, fields, items, tablename, tableprefix, total }
+		var count, total int64
+		if metadata != nil {
+			count = metadata.Count
+			total = metadata.Total
+		}
+		tablePrefix := reflection.ExtractTableNameOnly(tableName)
+		fieldList := h.buildDetailFields(model)
+		response := map[string]interface{}{
+			"count":       strconv.FormatInt(count, 10),
+			"fields":      fieldList,
+			"items":       data,
+			"tablename":   tableName,
+			"tableprefix": tablePrefix,
+			"total":       strconv.FormatInt(total, 10),
+		}
+		w.WriteHeader(http.StatusOK)
+		if err := w.WriteJSON(response); err != nil {
+			logger.Error("Failed to write JSON response: %v", err)
+		}
 	default:
-		// Default/detail format: standard response with metadata
+		// Default format: standard response with metadata
 		response := common.Response{
 			Success:  true,
 			Data:     data,