feat: add initial implementation of Go utilities and CI workflows

Env/env.go

@@ -0,0 +1,55 @@
+package Env
+
+import (
+	"log"
+	"os"
+	"strconv"
+	"strings"
+)
+
+type EnvironmentVariable string
+
+func (v EnvironmentVariable) GetName() string {
+	return string(v)
+}
+
+func (v EnvironmentVariable) GetEnvString(fallback string) string {
+	if value, ok := os.LookupEnv(string(v)); ok {
+		return value
+	}
+
+	return fallback
+}
+
+func (v EnvironmentVariable) GetEnvBool(fallback bool) bool {
+	value, ok := os.LookupEnv(string(v))
+
+	if !ok {
+		return fallback
+	}
+
+	value = strings.ToLower(value)
+	trueValues := []string{"1", "true"}
+
+	for _, x := range trueValues {
+		if value == x {
+			return true
+		}
+	}
+
+	return false
+}
+
+func (v EnvironmentVariable) GetEnvInt(key string, fallback int64) int64 {
+	if value, ok := os.LookupEnv(key); ok {
+		i, err := strconv.ParseInt(value, 10, 64)
+
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		return i
+	}
+
+	return fallback
+}

Env/env_test.go

@@ -0,0 +1,69 @@
+package Env
+
+import (
+	"os"
+	"testing"
+)
+
+func TestEnvironmentVariable_GetName(t *testing.T) {
+	v := EnvironmentVariable("TEST_VAR")
+	if v.GetName() != "TEST_VAR" {
+		t.Errorf("expected 'TEST_VAR', got '%s'", v.GetName())
+	}
+}
+
+func TestEnvironmentVariable_GetEnvString(t *testing.T) {
+	const envName = "TEST_STRING"
+	_ = os.Setenv(envName, "value")
+	defer func() {
+		_ = os.Unsetenv(envName)
+	}()
+
+	v := EnvironmentVariable(envName)
+	got := v.GetEnvString("fallback")
+	if got != "value" {
+		t.Errorf("expected 'value', got '%s'", got)
+	}
+
+	_ = os.Unsetenv(envName)
+	got = v.GetEnvString("fallback")
+	if got != "fallback" {
+		t.Errorf("expected 'fallback', got '%s'", got)
+	}
+}
+
+func TestEnvironmentVariable_GetEnvBool(t *testing.T) {
+	const envName = "TEST_BOOL"
+	v := EnvironmentVariable(envName)
+
+	_ = os.Setenv(envName, "true")
+	if !v.GetEnvBool(false) {
+		t.Errorf("expected true for 'true'")
+	}
+	_ = os.Setenv(envName, "1")
+	if !v.GetEnvBool(false) {
+		t.Errorf("expected true for '1'")
+	}
+	_ = os.Setenv(envName, "false")
+	if v.GetEnvBool(true) {
+		t.Errorf("expected false for 'false'")
+	}
+	_ = os.Unsetenv(envName)
+	if v.GetEnvBool(true) != true {
+		t.Errorf("expected fallback true")
+	}
+}
+
+func TestEnvironmentVariable_GetEnvInt(t *testing.T) {
+	const envName = "TEST_INT"
+	v := EnvironmentVariable(envName)
+
+	_ = os.Setenv(envName, "42")
+	if v.GetEnvInt(envName, 10) != 42 {
+		t.Errorf("expected 42")
+	}
+	_ = os.Unsetenv(envName)
+	if v.GetEnvInt(envName, 10) != 10 {
+		t.Errorf("expected fallback 10")
+	}
+}