introduce InputComponent interface and CustomID=>InputComponent mapping

core/entity_builder.go

@@ -300,9 +300,24 @@ func (b *entityBuilderImpl) CreateInteraction(interaction discord.Interaction, c
 
 	case discord.ModalSubmitInteraction:
 		baseInteraction := b.baseInteraction(i.BaseInteraction, c, updateCache)
+
+		componentsMap := ModalComponentsMap{}
+
+		for j := range i.Data.Components {
+			for k := range i.Data.Components[j].Components() {
+				component := i.Data.Components[j].Components()[k]
+				if inputComponent, ok := component.(discord.InputComponent); ok {
+					componentsMap[inputComponent.ID()] = inputComponent
+				}
+			}
+		}
+
 		modalSubmitInteraction := &ModalSubmitInteraction{
 			CreateInteraction: CreateInteraction{BaseInteraction: baseInteraction},
-			Data:              i.Data,
+			Data: ModalSubmitInteractionData{
+				ModalSubmitInteractionData: i.Data,
+				Components:                 componentsMap,
+			},
 		}
 
 		return modalSubmitInteraction

core/modal_submit_interaction.go

@@ -11,7 +11,7 @@ var _ Interaction = (*ModalSubmitInteraction)(nil)
 
 type ModalSubmitInteraction struct {
 	CreateInteraction
-	Data discord.ModalSubmitInteractionData
+	Data ModalSubmitInteractionData
 }
 
 func (i ModalSubmitInteraction) interaction() {}
@@ -26,3 +26,36 @@ func (i ModalSubmitInteraction) UpdateMessage(messageUpdate discord.MessageUpdat
 func (i ModalSubmitInteraction) DeferUpdateMessage(opts ...rest.RequestOpt) error {
 	return i.Respond(discord.InteractionCallbackTypeDeferredUpdateMessage, nil, opts...)
 }
+
+type ModalSubmitInteractionData struct {
+	discord.ModalSubmitInteractionData
+	Components ModalComponentsMap
+}
+
+type ModalComponentsMap map[discord.CustomID]discord.InputComponent
+
+func (m ModalComponentsMap) Get(customID discord.CustomID) discord.InputComponent {
+	if component, ok := m[customID]; ok {
+		return component
+	}
+	return nil
+}
+
+func (m ModalComponentsMap) TextComponent(customID discord.CustomID) *discord.TextInputComponent {
+	component := m.Get(customID)
+	if component == nil {
+		return nil
+	}
+	if cmp, ok := component.(discord.TextInputComponent); ok {
+		return &cmp
+	}
+	return nil
+}
+
+func (m ModalComponentsMap) Text(customID discord.CustomID) *string {
+	component := m.TextComponent(customID)
+	if component == nil {
+		return nil
+	}
+	return &component.Value
+}

discord/component.go

@@ -44,6 +44,11 @@ type InteractiveComponent interface {
 	interactiveComponent()
 }
 
+type InputComponent interface {
+	InteractiveComponent
+	inputComponent()
+}
+
 type UnmarshalComponent struct {
 	Component
 }
@@ -141,12 +146,12 @@ func (c *ActionRowComponent) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
-func (c ActionRowComponent) Type() ComponentType {
+func (ActionRowComponent) Type() ComponentType {
 	return ComponentTypeActionRow
 }
 
-func (c ActionRowComponent) component()          {}
-func (c ActionRowComponent) containerComponent() {}
+func (ActionRowComponent) component()          {}
+func (ActionRowComponent) containerComponent() {}
 
 func (c ActionRowComponent) Components() []InteractiveComponent {
 	return c
@@ -276,7 +281,7 @@ func (c ButtonComponent) MarshalJSON() ([]byte, error) {
 	})
 }
 
-func (c ButtonComponent) Type() ComponentType {
+func (ButtonComponent) Type() ComponentType {
 	return ComponentTypeButton
 }
 
@@ -289,8 +294,8 @@ func (c ButtonComponent) SetID(id CustomID) InteractiveComponent {
 	return c
 }
 
-func (c ButtonComponent) component()            {}
-func (c ButtonComponent) interactiveComponent() {}
+func (ButtonComponent) component()            {}
+func (ButtonComponent) interactiveComponent() {}
 
 // WithStyle returns a new ButtonComponent with the provided style
 func (c ButtonComponent) WithStyle(style ButtonStyle) ButtonComponent {
@@ -375,7 +380,7 @@ func (c SelectMenuComponent) MarshalJSON() ([]byte, error) {
 	})
 }
 
-func (c SelectMenuComponent) Type() ComponentType {
+func (SelectMenuComponent) Type() ComponentType {
 	return ComponentTypeSelectMenu
 }
 
@@ -388,8 +393,8 @@ func (c SelectMenuComponent) SetID(id CustomID) InteractiveComponent {
 	return c
 }
 
-func (c SelectMenuComponent) component()            {}
-func (c SelectMenuComponent) interactiveComponent() {}
+func (SelectMenuComponent) component()            {}
+func (SelectMenuComponent) interactiveComponent() {}
 
 // WithCustomID returns a new SelectMenuComponent with the provided customID
 func (c SelectMenuComponent) WithCustomID(customID CustomID) SelectMenuComponent {
@@ -515,6 +520,7 @@ func (o SelectMenuOption) WithDefault(defaultOption bool) SelectMenuOption {
 var (
 	_ Component            = (*TextInputComponent)(nil)
 	_ InteractiveComponent = (*TextInputComponent)(nil)
+	_ InputComponent       = (*TextInputComponent)(nil)
 )
 
 //goland:noinspection GoUnusedExportedFunction
@@ -558,7 +564,7 @@ func (c TextInputComponent) MarshalJSON() ([]byte, error) {
 	})
 }
 
-func (c TextInputComponent) Type() ComponentType {
+func (TextInputComponent) Type() ComponentType {
 	return ComponentTypeTextInput
 }
 
@@ -571,8 +577,9 @@ func (c TextInputComponent) SetID(id CustomID) InteractiveComponent {
 	return c
 }
 
-func (c TextInputComponent) component()            {}
-func (c TextInputComponent) interactiveComponent() {}
+func (TextInputComponent) component()            {}
+func (TextInputComponent) interactiveComponent() {}
+func (TextInputComponent) inputComponent()       {}
 
 // WithCustomID returns a new SelectMenuComponent with the provided customID
 func (c TextInputComponent) WithCustomID(customID CustomID) TextInputComponent {