feat(images-dependencies): introduce basic image dependencies configu…

…ration structs

pkg/config/dependency.go

@@ -0,0 +1,8 @@
+package config
+
+type Dependency struct {
+	ImageName string
+	Imports   []*DependencyImport
+
+	// TODO: raw *rawDependencies
+}

pkg/config/dependency_import.go

@@ -0,0 +1,31 @@
+package config
+
+import (
+	"fmt"
+	"strings"
+)
+
+type DependencyImport struct {
+	Type           DependencyImportType
+	TargetBuildArg string
+	TargetEnv      string
+
+	// TODO: raw *rawDependencyImport
+}
+
+func (i *DependencyImport) validate(img ImageInterface) error {
+	switch {
+	case img.IsStapel() && i.TargetBuildArg != "":
+		return newDetailedConfigError("`targetBuildArg cannot be used in the stapel image", nil, nil) // TODO: raw
+	case !img.IsStapel() && i.TargetEnv != "":
+		return newDetailedConfigError("`targetEnv cannot be used in the dockerfile image", nil, nil) // TODO: raw
+	}
+
+	switch i.Type {
+	case ImageNameImport, ImageTagImport, ImageRepoImport:
+	default:
+		return newDetailedConfigError(fmt.Sprintf("invalid `type: %s` for dependency import, expected one of: %s", i.Type, strings.Join([]string{string(ImageNameImport), string(ImageTagImport), string(ImageRepoImport)}, ", ")), nil, nil) // TODO: raw
+	}
+
+	return nil
+}

pkg/config/dependency_import_type.go

@@ -0,0 +1,9 @@
+package config
+
+type DependencyImportType string
+
+const (
+	ImageNameImport DependencyImportType = "ImageName"
+	ImageTagImport  DependencyImportType = "ImageTag"
+	ImageRepoImport DependencyImportType = "ImageRepo"
+)

pkg/config/image_from_dockerfile.go

@@ -42,3 +42,7 @@ func (c *ImageFromDockerfile) validate(giterminismManager giterminism_manager.In
 func (c *ImageFromDockerfile) GetName() string {
 	return c.Name
 }
+
+func (c *ImageFromDockerfile) IsStapel() bool {
+	return false
+}

pkg/config/image_interface.go

@@ -2,4 +2,5 @@ package config
 
 type ImageInterface interface {
 	GetName() string
+	IsStapel() bool
 }

pkg/config/stapel_image_base.go

@@ -28,6 +28,10 @@ func (c *StapelImageBase) GetName() string {
 	return c.Name
 }
 
+func (c *StapelImageBase) IsStapel() bool {
+	return true
+}
+
 func (c *StapelImageBase) imports() []*Import {
 	return c.Import
 }