generates nested types in doc (#2201)

Co-authored-by: Link_Zhao <Link_Zhao@epam.com>

tools/goctl/api/docgen/doc.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	_ "embed"
 	"fmt"
+	"go/format"
 	"html/template"
 	"strconv"
 	"strings"
@@ -35,12 +36,12 @@ func genDoc(api *spec.ApiSpec, dir, filename string) error {
 			routeComment = "N/A"
 		}
 
-		requestContent, err := buildDoc(route.RequestType)
+		requestContent, err := buildDoc(route.RequestType, api)
 		if err != nil {
 			return err
 		}
 
-		responseContent, err := buildDoc(route.ResponseType)
+		responseContent, err := buildDoc(route.ResponseType, api)
 		if err != nil {
 			return err
 		}
@@ -60,7 +61,6 @@ func genDoc(api *spec.ApiSpec, dir, filename string) error {
 		if err != nil {
 			return err
 		}
-
 		builder.Write(tmplBytes.Bytes())
 	}
 
@@ -68,7 +68,7 @@ func genDoc(api *spec.ApiSpec, dir, filename string) error {
 	return err
 }
 
-func buildDoc(route spec.Type) (string, error) {
+func buildDoc(route spec.Type, api *spec.ApiSpec) (string, error) {
 	if route == nil || len(route.Name()) == 0 {
 		return "", nil
 	}
@@ -78,12 +78,15 @@ func buildDoc(route spec.Type) (string, error) {
 	if definedType, ok := route.(spec.DefineStruct); ok {
 		associatedTypes(definedType, &tps)
 	}
-	value, err := gogen.BuildTypes(tps)
+	value, err := gogen.BuildTypes(tps, api)
 	if err != nil {
 		return "", err
 	}
-
-	return fmt.Sprintf("\n\n```golang\n%s\n```\n", value), nil
+	formatted, err := format.Source([]byte(value))
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("\n\n```golang\n%s\n```\n", string(formatted)), nil
 }
 
 func associatedTypes(tp spec.DefineStruct, tps *[]spec.Type) {

tools/goctl/api/gogen/gentypes.go

@@ -21,7 +21,7 @@ const typesFile = "types"
 var typesTemplate string
 
 // BuildTypes gen types to string
-func BuildTypes(types []spec.Type) (string, error) {
+func BuildTypes(types []spec.Type, api *spec.ApiSpec) (string, error) {
 	var builder strings.Builder
 	first := true
 	for _, tp := range types {
@@ -30,7 +30,7 @@ func BuildTypes(types []spec.Type) (string, error) {
 		} else {
 			builder.WriteString("\n\n")
 		}
-		if err := writeType(&builder, tp); err != nil {
+		if err := writeType(&builder, tp, api); err != nil {
 			return "", apiutil.WrapErr(err, "Type "+tp.Name()+" generate error")
 		}
 	}
@@ -39,7 +39,7 @@ func BuildTypes(types []spec.Type) (string, error) {
 }
 
 func genTypes(dir string, cfg *config.Config, api *spec.ApiSpec) error {
-	val, err := BuildTypes(api.Types)
+	val, err := BuildTypes(api.Types, api)
 	if err != nil {
 		return err
 	}
@@ -68,7 +68,7 @@ func genTypes(dir string, cfg *config.Config, api *spec.ApiSpec) error {
 	})
 }
 
-func writeType(writer io.Writer, tp spec.Type) error {
+func writeType(writer io.Writer, tp spec.Type, api *spec.ApiSpec) error {
 	structType, ok := tp.(spec.DefineStruct)
 	if !ok {
 		return fmt.Errorf("unspport struct type: %s", tp.Name())
@@ -76,15 +76,7 @@ func writeType(writer io.Writer, tp spec.Type) error {
 
 	fmt.Fprintf(writer, "type %s struct {\n", util.Title(tp.Name()))
 	for _, member := range structType.Members {
-		if member.IsInline {
-			if _, err := fmt.Fprintf(writer, "%s\n", strings.Title(member.Type.Name())); err != nil {
-				return err
-			}
-
-			continue
-		}
-
-		if err := writeProperty(writer, member.Name, member.Tag, member.GetComment(), member.Type, 1); err != nil {
+		if err := writeProperty(writer, member.Name, member.Tag, member.GetComment(), member.Type, 1, api); err != nil {
 			return err
 		}
 	}

tools/goctl/api/gogen/testdata/api_common.api

@@ -0,0 +1,3 @@
+type Common {
+	Some string `json:"some"` // some imported type
+}

tools/goctl/api/gogen/testdata/api_has_nested_type.api

@@ -0,0 +1,48 @@
+import "./api_common.api"
+type Resp {
+	R1 string `json:"r1"`
+	R2 bool   `json:"r2"`
+	R3 Common `json:"r3"`
+}
+type CommonResponse {
+	Code    int    `json:"code"` // 100 | 200
+	Message string `json:"message"`
+	Common
+	Response Resp `json:"response"`
+}
+
+type LoginResponseDto {
+	Id          string `bson:"_id" json:"id"`
+	Name        string `json:"name"`
+	AccessToken string `json:"accessToken"`
+}
+
+type UserCreateDto {
+	Id string `json:"id"`
+}
+type LoginRequest {
+	Username string `json:"username,optional"` // user name is optional
+	Password string `json:"password,optional"`
+}
+type LoginResponse {
+	*CommonResponse
+	Result *LoginResponseDto `json:"result"`
+}
+
+type UserCreateRequest {
+	Username string `json:"username,optional"` // some dsada
+	Password string `json:"password,optional"`
+}
+
+type UserCreateResponse {
+	*CommonResponse
+	Result *UserCreateDto `json:"result"` // result
+}
+
+service user-api {
+	@handler UserHandler
+	post /user/signin(UserCreateRequest) returns (UserCreateResponse)
+	
+	@handler LoginHandler
+	post /user/login(LoginRequest) returns (LoginResponse)
+}

tools/goctl/api/gogen/util.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"io"
+	"os"
 	"strings"
 	"text/template"
 
@@ -57,9 +58,14 @@ func genFile(c fileGenConfig) error {
 	return err
 }
 
-func writeProperty(writer io.Writer, name, tag, comment string, tp spec.Type, indent int) error {
+func writeProperty(writer io.Writer, name, tag, comment string, tp spec.Type, indent int, api *spec.ApiSpec) error {
 	util.WriteIndent(writer, indent)
 	var err error
+	var refPropertyName = tp.Name()
+	if isCustomType(refPropertyName) {
+		strs := getRefProperty(api, refPropertyName, name)
+		_, err = fmt.Fprintf(writer, "%s\n", strs)
+	} else {
 		if len(comment) > 0 {
 			comment = strings.TrimPrefix(comment, "//")
 			comment = "//" + comment
@@ -67,6 +73,7 @@ func writeProperty(writer io.Writer, name, tag, comment string, tp spec.Type, in
 		} else {
 			_, err = fmt.Fprintf(writer, "%s %s %s\n", strings.Title(name), tp.Name(), tag)
 		}
+	}
 
 	return err
 }
@@ -181,3 +188,58 @@ func golangExpr(ty spec.Type, pkg ...string) string {
 
 	return ""
 }
+
+func isCustomType(t string) bool {
+	var builtinType = []string{"string", "bool", "int", "uint", "uint8", "uint16", "uint32", "uint64", "int8", "int16", "int32", "int64", "float32", "float64", "uintptr", "complex64", "complex128"}
+	var is bool = true
+	for _, v := range builtinType {
+		if t == v {
+			is = false
+			break
+		}
+	}
+	return is
+}
+
+// Generate nested types recursively
+func getRefProperty(api *spec.ApiSpec, refPropertyName string, name string) string {
+	var str string = ""
+	for _, t := range api.Types {
+		if strings.TrimLeft(refPropertyName, "*") == t.Name() {
+			switch tm := t.(type) {
+			case spec.DefineStruct:
+				for _, m := range tm.Members {
+					if isCustomType(m.Type.Name()) {
+						// recursive
+						str += getRefProperty(api, m.Type.Name(), m.Name)
+					} else {
+						if len(m.Comment) > 0 {
+							comment := strings.TrimPrefix(m.Comment, "//")
+							comment = "//" + comment
+							str += fmt.Sprintf("%s %s %s %s\n\t", m.Name, m.Type.Name(), m.Tag, comment)
+						} else {
+							str += fmt.Sprintf("%s %s %s\n\t", m.Name, m.Type.Name(), m.Tag)
+						}
+
+					}
+
+				}
+			}
+		}
+	}
+	if name == "" {
+		temp := `${str}`
+		return os.Expand(temp, func(k string) string {
+			return str
+		})
+	} else {
+		temp := `${name} struct {
+			${str}}`
+		return os.Expand(temp, func(k string) string {
+			return map[string]string{
+				"name": name,
+				"str":  str,
+			}[k]
+		})
+	}
+}