Add github driver and low level transformer

internal/drivers/drivers.go

@@ -27,5 +27,8 @@ func NewDriversMap(environment string) map[string]Driver {
 		"gitlab": &GitlabDriver{
 			Path: path.Join("build", environment, "gitlab"),
 		},
+		"github": &GitHubDriver{
+			Path: path.Join("build", environment, "github"),
+		},
 	}
 }

internal/drivers/github.go

@@ -0,0 +1,60 @@
+package drivers
+
+import (
+	"fmt"
+	"os"
+	"path"
+
+	"cuelang.org/go/cue"
+	"cuelang.org/go/encoding/yaml"
+	"devopzilla.com/guku/internal/stack"
+	"devopzilla.com/guku/internal/utils"
+)
+
+type GitHubDriver struct {
+	Path string
+}
+
+func (d *GitHubDriver) match(resource cue.Value) bool {
+	driverName, _ := resource.LookupPath(cue.ParsePath("$metadata.labels.driver")).String()
+	return driverName == "github"
+}
+
+func (d *GitHubDriver) ApplyAll(stack *stack.Stack) error {
+	foundResources := false
+
+	for _, componentId := range stack.GetTasks() {
+		component, _ := stack.GetComponent(componentId)
+
+		resourceIter, _ := component.LookupPath(cue.ParsePath("$resources")).Fields()
+		for resourceIter.Next() {
+			if d.match(resourceIter.Value()) {
+				foundResources = true
+				resource, err := utils.RemoveMeta(resourceIter.Value())
+				if err != nil {
+					return err
+				}
+
+				data, err := yaml.Encode(resource)
+				if err != nil {
+					return err
+				}
+
+				fileName := fmt.Sprintf("%s-github-workflow.yml", resourceIter.Label())
+				resourceFilePath := path.Join(d.Path, fileName)
+				if _, err := os.Stat(d.Path); os.IsNotExist(err) {
+					os.MkdirAll(d.Path, 0700)
+				}
+				os.WriteFile(resourceFilePath, data, 0700)
+			}
+		}
+	}
+
+	if !foundResources {
+		return nil
+	}
+
+	fmt.Printf("[github] applied resources to \"%s/*-github-workflow.yml\"\n", d.Path)
+
+	return nil
+}