package editform import ( "bytes" "fmt" "reflect" "strconv" "strings" "github.com/animenotifier/arn" "github.com/animenotifier/notify.moe/components" "github.com/animenotifier/notify.moe/utils" ) // Render renders a generic editing UI for any kind of datatype that has an ID. func Render(obj interface{}, title string, user *arn.User) string { t := reflect.TypeOf(obj).Elem() v := reflect.ValueOf(obj).Elem() id := findMainID(t, v) lowerCaseTypeName := strings.ToLower(t.Name()) endpoint := `/api/` + lowerCaseTypeName + `/` + id.String() var b bytes.Buffer b.WriteString(`
`) b.WriteString(`
`) // Title b.WriteString(`

`) b.WriteString(title) b.WriteString(`

`) // Render the object with its fields RenderObject(&b, obj, "") // Additional buttons when logged in if user != nil { b.WriteString(`
`) _, ok := t.FieldByName("IsDraft") if ok { isDraft := v.FieldByName("IsDraft").Interface().(bool) if isDraft { b.WriteString(`
`) } } if user.Role == "editor" || user.Role == "admin" { b.WriteString(``) } b.WriteString(`
`) } b.WriteString("
") b.WriteString("
") return b.String() } // RenderObject renders the UI for the object into the bytes buffer and appends an ID prefix for all API requests. // The ID prefix should either be empty or end with a dot character. func RenderObject(b *bytes.Buffer, obj interface{}, idPrefix string) { t := reflect.TypeOf(obj) v := reflect.ValueOf(obj) if t.Kind() == reflect.Ptr { t = t.Elem() v = v.Elem() } // Fields for i := 0; i < t.NumField(); i++ { field := t.Field(i) RenderField(b, &v, field, idPrefix) } } // RenderField ... func RenderField(b *bytes.Buffer, v *reflect.Value, field reflect.StructField, idPrefix string) { if field.Anonymous || field.Tag.Get("editable") != "true" { return } fieldValue := reflect.Indirect(v.FieldByName(field.Name)) fieldType := field.Type.String() // String if fieldType == "string" { idType := field.Tag.Get("idType") // Try to infer the ID type by the field name if idType == "" { switch field.Name { case "AnimeID": idType = "Anime" case "CharacterID": idType = "Character" } } showPreview := idType != "" && fieldValue.String() != "" if showPreview { b.WriteString("
") } // Input field if field.Tag.Get("datalist") != "" { dataList := field.Tag.Get("datalist") values := arn.DataLists[dataList] b.WriteString(components.InputSelection(idPrefix+field.Name, fieldValue.String(), field.Name, field.Tag.Get("tooltip"), values)) } else if field.Tag.Get("type") == "textarea" { b.WriteString(components.InputTextArea(idPrefix+field.Name, fieldValue.String(), field.Name, field.Tag.Get("tooltip"))) } else { b.WriteString(components.InputText(idPrefix+field.Name, fieldValue.String(), field.Name, field.Tag.Get("tooltip"))) } if showPreview { b.WriteString("
") } // Preview switch idType { case "Anime": animeID := fieldValue.String() anime, err := arn.GetAnime(animeID) if err == nil { b.WriteString(components.EditFormImagePreview(anime.Link(), anime.Image("small"), true)) } case "Character": characterID := fieldValue.String() character, err := arn.GetCharacter(characterID) if err == nil { b.WriteString(components.EditFormImagePreview(character.Link(), character.Image, false)) } case "": break default: fmt.Println("Error: Unknown idType tag: " + idType) } // Close preview tags if showPreview { b.WriteString("
") } return } // Int if fieldType == "int" { b.WriteString(components.InputNumber(idPrefix+field.Name, float64(fieldValue.Int()), field.Name, field.Tag.Get("tooltip"), "", "", "1")) return } // Float if fieldType == "float64" { b.WriteString(components.InputNumber(idPrefix+field.Name, fieldValue.Float(), field.Name, field.Tag.Get("tooltip"), "", "", "")) return } // Bool if fieldType == "bool" { if field.Name == "IsDraft" { return } // TODO: Render bool type return } // Array of strings if fieldType == "[]string" { b.WriteString(components.InputTags(idPrefix+field.Name, fieldValue.Interface().([]string), field.Name, field.Tag.Get("tooltip"))) return } // Any kind of array if strings.HasPrefix(fieldType, "[]") { b.WriteString(`
`) b.WriteString(`

`) b.WriteString(field.Name) b.WriteString(`

`) for sliceIndex := 0; sliceIndex < fieldValue.Len(); sliceIndex++ { b.WriteString(`
`) b.WriteString(`
`) // Title b.WriteString(strconv.Itoa(sliceIndex+1) + ". " + field.Name) b.WriteString(`
`) // Remove button b.WriteString(``) b.WriteString(`
`) arrayObj := fieldValue.Index(sliceIndex).Interface() arrayIDPrefix := fmt.Sprintf("%s[%d].", field.Name, sliceIndex) RenderObject(b, arrayObj, arrayIDPrefix) // Preview // elementValue := fieldValue.Index(sliceIndex) // RenderArrayElement(b, &elementValue) if fieldType == "[]*arn.ExternalMedia" { b.WriteString(components.ExternalMedia(fieldValue.Index(sliceIndex).Interface().(*arn.ExternalMedia))) } b.WriteString(`
`) } b.WriteString(`
`) b.WriteString(``) b.WriteString(`
`) b.WriteString(`
`) return } // Any custom field type will be recursively rendered via another RenderObject call b.WriteString(`
`) b.WriteString(`

` + field.Name + `

`) // Indent the fields b.WriteString(`
`) RenderObject(b, fieldValue.Interface(), field.Name+".") b.WriteString(`
`) b.WriteString(`
`) } // findMainID finds the main ID of the object. func findMainID(t reflect.Type, v reflect.Value) reflect.Value { idField := v.FieldByName("ID") if idField.IsValid() { return reflect.Indirect(idField) } for i := 0; i < t.NumField(); i++ { field := t.Field(i) if field.Tag.Get("mainID") == "true" { return reflect.Indirect(v.Field(i)) } } panic("Type " + t.Name() + " doesn't have a main ID!") }