feat: use If and remove Nil node let card easy to use

card/card.go

@@ -23,7 +23,7 @@ func Card(modules ...lark.MessageContentCardModule) *lark.MessageContentCard {
 	return &lark.MessageContentCard{
 		Header:      nil,
 		Config:      Config(),
-		Modules:     modules,
+		Modules:     removeNilMessageContentCardModule(modules),
 		I18NModules: nil,
 	}
 }

card/column.go

@@ -6,7 +6,7 @@ import (
 
 func Column(modules ...lark.MessageContentCardModule) *lark.MessageContentCardModuleColumn {
 	return &lark.MessageContentCardModuleColumn{
-		Modules:       modules,
+		Modules:       removeNilMessageContentCardModule(modules),
 		Width:         nil,
 		Weight:        nil,
 		VerticalAlign: nil,

card/element_image_combination.go

@@ -6,6 +6,6 @@ func ElementImageCombination(mode lark.MessageContentCardElementCombinationMode,
 	res := &lark.MessageContentCardElementImageCombination{
 		CombinationMode: mode,
 	}
-	res.SetImageList(images...)
+	res.SetImageList(removeNilString(images)...)
 	return res
 }

card/element_select_menu.go

@@ -22,14 +22,14 @@ import (
 func StaticSelectMenu(options ...*lark.MessageContentCardObjectOption) *lark.MessageContentCardElementSelectMenu {
 	return &lark.MessageContentCardElementSelectMenu{
 		Tag:     lark.MessageContentCardElementTagSelectStatic,
-		Options: options,
+		Options: removeNilMessageContentCardObjectOption(options),
 		Value:   nil,
 	}
 }
 
 func PersonSelectMenuForIDs(ids ...string) *lark.MessageContentCardElementSelectMenu {
 	var options []*lark.MessageContentCardObjectOption
-	for _, v := range ids {
+	for _, v := range removeNilString(ids) {
 		options = append(options, PersonOption(v))
 	}
 	return &lark.MessageContentCardElementSelectMenu{

card/if.go

@@ -0,0 +1,71 @@
+package card
+
+import (
+	"unsafe"
+
+	"github.com/chyroc/lark"
+)
+
+type face struct {
+	x    uintptr
+	data unsafe.Pointer
+}
+
+func isNil(v any) bool {
+	return (*face)(unsafe.Pointer(&v)).data == nil
+}
+
+func removeNilMessageContentCardModule(data []lark.MessageContentCardModule) []lark.MessageContentCardModule {
+	res := make([]lark.MessageContentCardModule, 0, len(data))
+	for _, v := range data {
+		if isNil(v) {
+			continue
+		}
+		res = append(res, v)
+	}
+	return res
+}
+
+func removeNilMessageContentCardElement(data []lark.MessageContentCardElement) []lark.MessageContentCardElement {
+	res := make([]lark.MessageContentCardElement, 0, len(data))
+	for _, v := range data {
+		if isNil(v) {
+			continue
+		}
+		res = append(res, v)
+	}
+	return res
+}
+
+func removeNilMessageContentCardObjectOption(data []*lark.MessageContentCardObjectOption) []*lark.MessageContentCardObjectOption {
+	res := make([]*lark.MessageContentCardObjectOption, 0, len(data))
+	for _, v := range data {
+		if isNil(v) {
+			continue
+		}
+		res = append(res, v)
+	}
+	return res
+}
+
+func removeNilMessageContentCardModuleColumn(data []*lark.MessageContentCardModuleColumn) []*lark.MessageContentCardModuleColumn {
+	res := make([]*lark.MessageContentCardModuleColumn, 0, len(data))
+	for _, v := range data {
+		if isNil(v) {
+			continue
+		}
+		res = append(res, v)
+	}
+	return res
+}
+
+func removeNilString(data []string) []string {
+	res := make([]string, 0, len(data))
+	for _, v := range data {
+		if isNil(v) {
+			continue
+		}
+		res = append(res, v)
+	}
+	return res
+}

card/if_generics.go

@@ -0,0 +1,17 @@
+// +build go1.18
+
+package card
+
+func If[T any](cond bool, val T, otherwise T) T {
+	if cond {
+		return val
+	}
+	return otherwise
+}
+
+func IfLay[T any](cond bool, val func() T, otherwise func() T) T {
+	if cond {
+		return val()
+	}
+	return otherwise()
+}

card/module_action.go

@@ -22,6 +22,6 @@ import (
 // Action https://open.feishu.cn/document/ukTMukTMukTM/uYjNwUjL2YDM14iN2ATN
 func Action(actions ...lark.MessageContentCardElement) *lark.MessageContentCardModuleAction {
 	return &lark.MessageContentCardModuleAction{
-		Actions: actions,
+		Actions: removeNilMessageContentCardElement(actions),
 	}
 }

card/module_column_set.go

@@ -9,7 +9,7 @@ func ColumnSet(columns ...*lark.MessageContentCardModuleColumn) *lark.MessageCon
 	bgStyle := "default"
 	hSpacing := "default"
 	return &lark.MessageContentCardModuleColumnSet{
-		Columns:           columns,
+		Columns:           removeNilMessageContentCardModuleColumn(columns),
 		FlexMode:          &flexMode,
 		BackgroundStyle:   &bgStyle,
 		HorizontalSpacing: &hSpacing,

card/module_form.go

@@ -23,6 +23,6 @@ import (
 func Form(name string, elements ...lark.MessageContentCardElement) *lark.MessageContentCardModuleForm {
 	return &lark.MessageContentCardModuleForm{
 		Name:     name,
-		Elements: elements,
+		Elements: removeNilMessageContentCardElement(elements),
 	}
 }

card/module_note.go

@@ -22,6 +22,6 @@ import (
 // Note 注意：note 只能填充 text 和 image 对象
 func Note(elements ...lark.MessageContentCardElement) *lark.MessageContentCardModuleNote {
 	return &lark.MessageContentCardModuleNote{
-		Elements: elements,
+		Elements: removeNilMessageContentCardElement(elements),
 	}
 }

card/modules.go

@@ -21,5 +21,5 @@ import (
 
 // Modules 构造模块列表
 func Modules(modules ...lark.MessageContentCardModule) []lark.MessageContentCardModule {
-	return modules
+	return removeNilMessageContentCardModule(modules)
 }

go.mod

@@ -1,5 +1,5 @@
 module github.com/chyroc/lark
 
-go 1.16
+go 1.18
 
 require github.com/stretchr/testify v1.8.2