feat: implement component-item management with CRUD operations and status updates

internal/mapper/component_item_mapper.go

@@ -0,0 +1,56 @@
+package mapper
+
+import (
+	"encoding/json"
+	"wm-backend/internal/models"
+	db "wm-backend/sqlc_gen"
+)
+
+func ToDomainComponentItem(r db.ComponentItem) *models.ComponentItem {
+	return &models.ComponentItem{
+		ID:          r.ID,
+		ComponentID: r.ComponentID,
+		ContainerID: r.ContainerID,
+		Quantity:    r.Quantity,
+		Status:      string(r.Status),
+		Metadata:    json.RawMessage(r.Metadata),
+		CreatedAt:   r.CreatedAt,
+		UpdatedAt:   r.UpdatedAt,
+	}
+}
+
+func ToModelComponentItem(r *models.ComponentItem) *db.CreateComponentItemParams {
+	return &db.CreateComponentItemParams{
+		ComponentID: r.ComponentID,
+		ContainerID: r.ContainerID,
+		Quantity:    r.Quantity,
+		Status:      db.ComponentItemStatusEnum(r.Status),
+		Metadata:    []byte(r.Metadata),
+		CreatedAt:   r.CreatedAt,
+	}
+}
+
+func ToUpdateModelComponentItem(r *models.ComponentItem) *db.UpdateComponentItemParams {
+	return &db.UpdateComponentItemParams{
+		ComponentID: r.ComponentID,
+		ContainerID: r.ContainerID,
+		Metadata:    []byte(r.Metadata),
+		UpdatedAt:   r.UpdatedAt,
+		ID:          r.ID,
+	}
+}
+
+func ToDomainFindComponentItem(r db.FindComponentItemRow) *models.FindComponentItemResult {
+	return &models.FindComponentItemResult{
+		ComponentName: r.ComponentName,
+		TypeName:      r.TypeName,
+		Quantity:      r.Quantity,
+		Status:        string(r.Status),
+		ContainerName: r.ContainerName,
+		ContainerType: string(r.ContainerType),
+		ShelfName:     r.ShelfName,
+		CabinetName:   r.CabinetName,
+		RoomName:      r.RoomName,
+		WarehouseName: r.WarehouseName,
+	}
+}