init - add project files

cmd/metagen/main.go

@@ -0,0 +1,111 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"os/exec"
+)
+
+var envtype int // set by user with cli flag
+
+const (
+	ENVIRONMENT_DEV        = iota
+	ENVIRONMENT_STAGING    = iota
+	ENVIRONMENT_PRODUCTION = iota
+)
+
+const METAGEN_AUTO_COMMENT = "// @Metagen -- THIS FILE WAS AUTOGENERATED OR PREPROCESSED BY METAGEN - DO NOT EDIT BY HAND"
+
+// metagen - code generator application
+//
+// Generates code for other applications, such as the server application
+func main() {
+	env := flag.String("env", "dev", "The environment to run in: dev, staging, or production")
+
+	// Parse command-line flags
+	flag.Parse()
+
+	switch *env {
+	case "dev":
+		envtype = ENVIRONMENT_DEV
+	case "staging":
+		envtype = ENVIRONMENT_STAGING
+	case "production":
+		envtype = ENVIRONMENT_PRODUCTION
+	default:
+		fmt.Printf("Invalid environment specified: %s\n", *env)
+		fmt.Println("Allowed values are: dev, staging, or production")
+		os.Exit(1)
+	}
+
+	args := flag.Args()
+
+	for _, arg := range args {
+		switch arg {
+		case "build-all":
+			preBuild()
+			build()
+			goto End
+		case "build":
+			preBuild()
+			goto End
+		case "migrate":
+			migrations(args)
+			goto End
+		default:
+			helpmsg()
+			goto End
+		}
+	}
+
+End:
+
+	if len(args) == 0 {
+		helpmsg()
+	}
+}
+
+func helpmsg() {
+	fmt.Println("Usage: metagen [options...]")
+	fmt.Println("build :: Build dependencies, generate code, then build final executables.")
+	fmt.Println("migrate [up, down, goto {V}, create {migration name}] :: Deploy and create SQL migrations.")
+	os.Exit(1)
+}
+
+func preBuild() {
+	if envtype == ENVIRONMENT_DEV {
+		fmt.Println("[DEBUG ENVIRONMENT]")
+	} else if envtype == ENVIRONMENT_STAGING || envtype == ENVIRONMENT_PRODUCTION {
+		fmt.Println("[RELEASE ENVIRONMENT]")
+	}
+
+	// db creation
+	maybeCreateSqliteDb()
+
+	// code generation
+	generateInlineStyles()
+	generateDebugConfig()
+	generateJetModels()
+}
+
+func build() {
+	compileServer()
+}
+
+func compileServer() {
+	var out []byte
+	var err error
+
+	fmt.Printf("Compiling Server Binary")
+
+	if envtype == ENVIRONMENT_DEV {
+		// include extra flags for the GC
+		out, err = exec.Command("go", "build", "-gcflags=all=-N -l", "./cmd/server").CombinedOutput()
+	} else {
+		out, err = exec.Command("go", "build", "./cmd/server").CombinedOutput()
+	}
+
+	handleCmdOutput(out, err)
+	printStatus(true)
+}