fix regression: setting 3rd party URL via ARDUINO_BOARD_MANAGER_ADDITIONAL_URLS env var (#2645)

internal/cli/configuration/defaults.go

@@ -84,7 +84,7 @@ func InjectEnvVars(settings *Settings) {
 	// Bind env aliases to keep backward compatibility
 	setIfEnvExists := func(key, env string) {
 		if v, ok := os.LookupEnv(env); ok {
-			settings.SetFromCLIArgs(key, v)
+			settings.SetFromENV(key, v)
 		}
 	}
 	setIfEnvExists("library.enable_unsafe_install", "ARDUINO_ENABLE_UNSAFE_LIBRARY_INSTALL")

internal/go-configmap/cli.go

@@ -21,6 +21,43 @@ import (
 	"strings"
 )
 
+func (c *Map) SetFromENV(key string, arg string) error {
+	// in case of schemaless configuration, we don't know the type of the setting
+	// we will save it as a string
+	if len(c.schema) == 0 {
+		c.Set(key, arg)
+		return nil
+	}
+
+	// Find the correct type for the given setting
+	valueType, ok := c.schema[key]
+	if !ok {
+		return fmt.Errorf("key not found: %s", key)
+	}
+
+	var value any
+	{
+		var conversionError error
+		switch valueType.String() {
+		case "uint":
+			value, conversionError = strconv.Atoi(arg)
+		case "bool":
+			value, conversionError = strconv.ParseBool(arg)
+		case "string":
+			value = arg
+		case "[]string":
+			value = strings.Split(arg, " ")
+		default:
+			return fmt.Errorf("unhandled type: %s", valueType)
+		}
+		if conversionError != nil {
+			return fmt.Errorf("error setting value: %v", conversionError)
+		}
+	}
+
+	return c.Set(key, value)
+}
+
 func (c *Map) SetFromCLIArgs(key string, args ...string) error {
 	if len(args) == 0 {
 		c.Delete(key)
@@ -101,7 +138,7 @@ func (c *Map) InjectEnvVars(env []string, prefix string) []error {
 		}
 
 		// Update the configuration value
-		if err := c.SetFromCLIArgs(key, envValue); err != nil {
+		if err := c.SetFromENV(key, envValue); err != nil {
 			errs = append(errs, err)
 		}
 	}

internal/integrationtest/config/config_test.go

@@ -902,3 +902,32 @@ build.unk: 123
 	require.NoError(t, err)
 	require.Equal(t, "en", strings.TrimSpace(string(out)))
 }
+
+func TestConfigViaEnvVars(t *testing.T) {
+	env, cli := integrationtest.CreateArduinoCLIWithEnvironment(t)
+	defer env.CleanUp()
+
+	// array of strings
+	out, _, err := cli.RunWithCustomEnv(
+		map[string]string{"ARDUINO_BOARD_MANAGER_ADDITIONAL_URLS": "https://espressif.github.io/arduino-esp32/package_esp32_index.json https://arduino.esp8266.com/stable/package_esp8266com_index.json"},
+		"config", "get", "board_manager.additional_urls",
+	)
+	require.NoError(t, err)
+	require.Equal(t, "- https://espressif.github.io/arduino-esp32/package_esp32_index.json\n- https://arduino.esp8266.com/stable/package_esp8266com_index.json\n\n", string(out))
+
+	// boolean
+	out, _, err = cli.RunWithCustomEnv(
+		map[string]string{"ARDUINO_LIBRARY_ENABLE_UNSAFE_INSTALL": "True"},
+		"config", "get", "library.enable_unsafe_install",
+	)
+	require.NoError(t, err)
+	require.Equal(t, "true\n\n", string(out))
+
+	// integer
+	out, _, err = cli.RunWithCustomEnv(
+		map[string]string{"ARDUINO_BUILD_CACHE_COMPILATIONS_BEFORE_PURGE": "20"},
+		"config", "get", "build_cache.compilations_before_purge",
+	)
+	require.NoError(t, err)
+	require.Equal(t, "20\n\n", string(out))
+}