t4: scaffold ComicForge Go project

1 files changed, 64 insertions, 0 deletions

diff --git a/Magefile.go b/Magefile.go
new file mode 100644
index 0000000..df71e47
--- /dev/null
+++ b/Magefile.go
@@ -0,0 +1,64 @@
+//go:build mage
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/magefile/mage/mg"
+	"github.com/magefile/mage/sh"
+)
+
+const binaryName = "comicforge"
+
+// Default builds the project.
+func Default() {
+	mg.Deps(Build)
+}
+
+// Build compiles the comicforge binary.
+func Build() error {
+	return sh.RunV("go", "build", "-o", binaryName, "./cmd/comicforge")
+}
+
+// Test runs the Go test suite.
+func Test() error {
+	return sh.RunV("go", "test", "./...")
+}
+
+// Install copies the built binary into GOPATH/bin.
+func Install() error {
+	mg.Deps(Build)
+
+	gopath, err := resolveGOPATH()
+	if err != nil {
+		return err
+	}
+
+	binDir := filepath.Join(gopath, "bin")
+	if err := os.MkdirAll(binDir, 0o755); err != nil {
+		return fmt.Errorf("create bin dir: %w", err)
+	}
+
+	return sh.RunV("cp", "-v", binaryName, filepath.Join(binDir, binaryName))
+}
+
+// Clean removes build outputs from the repository root.
+func Clean() error {
+	return sh.RunV("rm", "-f", binaryName)
+}
+
+func resolveGOPATH() (string, error) {
+	if gopath := os.Getenv("GOPATH"); gopath != "" {
+		return gopath, nil
+	}
+
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return "", fmt.Errorf("resolve home directory: %w", err)
+	}
+
+	return filepath.Join(homeDir, "go"), nil
+}