config reporter for external applications

config/config.go

@@ -1,6 +1,7 @@
 package config
 
 import (
+	"strconv"
 	"strings"
 
 	"git.defalsify.org/vise.git/logging"
@@ -23,6 +24,7 @@ var (
 	userDbConn         string
 	userDbConnMode     storage.DbMode
 	Languages          []string
+	configManager      *Config
 )
 
 type Override struct {
@@ -134,6 +136,17 @@ func GetConns() (storage.Conns, error) {
 
 // LoadConfig initializes the configuration values after environment variables are loaded.
 func LoadConfig() error {
+	configManager = NewConfig(logg)
+
+	// Add configuration keys with validation
+	configManager.AddKey("HOST", "127.0.0.1", false, nil)
+	configManager.AddKey("PORT", "7123", false, func(v string) error {
+		_, err := strconv.Atoi(v)
+		return err
+	})
+	configManager.AddKey("DB_CONN", "", true, nil)
+	// ... add other keys ?  or is enough :/ ...
+
 	err := setConn()
 	if err != nil {
 		return err
@@ -145,5 +158,7 @@ func LoadConfig() error {
 	DefaultLanguage = defaultLanguage
 	Languages = languages
 
+	// Report configuration
+	configManager.Report("INFO")
 	return nil
 }

config/config_test.go

@@ -0,0 +1,61 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"git.defalsify.org/vise.git/logging"
+)
+
+// go test -tags configreport ./config/...   ---> run with tag
+func TestConfig(t *testing.T) {
+	logger := logging.NewVanilla().WithDomain("test")
+	cfg := NewConfig(logger)
+
+	t.Run("Default Values", func(t *testing.T) {
+		cfg.AddKey("TEST_KEY", "default", false, nil)
+		value, err := cfg.GetValue("TEST_KEY")
+		t.Logf("Got value: %q, error: %v", value, err)
+		if err != nil {
+			t.Errorf("unexpected error: %v", err)
+		}
+		if value != "default" {
+			t.Errorf("expected 'default', got '%s'", value)
+		}
+	})
+
+	t.Run("Environment Override", func(t *testing.T) {
+		os.Setenv("TEST_ENV_KEY", "override")
+		defer os.Unsetenv("TEST_ENV_KEY")
+
+		cfg.AddKey("TEST_ENV_KEY", "default", false, nil)
+		value, err := cfg.GetValue("TEST_ENV_KEY")
+		t.Logf("Got value: %q, error: %v", value, err)
+		if err != nil {
+			t.Errorf("unexpected error: %v", err)
+		}
+		if value != "override" {
+			t.Errorf("expected 'override', got '%s'", value)
+		}
+	})
+
+	t.Run("Validation", func(t *testing.T) {
+		validator := func(v string) error {
+			if v != "valid" {
+				return fmt.Errorf("invalid value")
+			}
+			return nil
+		}
+
+		cfg.AddKey("VALIDATED_KEY", "valid", false, validator)
+		os.Setenv("VALIDATED_KEY", "invalid")
+		defer os.Unsetenv("VALIDATED_KEY")
+
+		value, err := cfg.GetValue("VALIDATED_KEY")
+		t.Logf("Got value: %q, error: %v", value, err)
+		if err == nil {
+			t.Error("expected validation error, got nil")
+		}
+	})
+}

config/reporter.go

@@ -0,0 +1,96 @@
+//go:build configreport
+
+package config
+
+import (
+	"fmt"
+
+	"git.defalsify.org/vise.git/logging"
+	"git.grassecon.net/grassrootseconomics/visedriver/env"
+)
+
+// ConfigValue represents a configuration key-value pair
+type ConfigValue struct {
+	Key       string
+	Default   string
+	Validator func(string) error
+	Sensitive bool
+}
+
+// Config handles configuration management and reporting
+type Config struct {
+	values map[string]ConfigValue
+	logger logging.Vanilla
+}
+
+func NewConfig(logger logging.Vanilla) *Config {
+	return &Config{
+		values: make(map[string]ConfigValue),
+		logger: logger,
+	}
+}
+
+// AddKey registers a new configuration key with optional validation
+func (c *Config) AddKey(key string, defaultValue string, sensitive bool, validator func(string) error) {
+	c.values[key] = ConfigValue{
+		Key:       key,
+		Default:   defaultValue,
+		Validator: validator,
+		Sensitive: sensitive,
+	}
+}
+
+// GetValue returns the value for a given key, applying environment override if present
+func (c *Config) GetValue(key string) (string, error) {
+	// Find config value by key
+	var cv ConfigValue
+	for _, v := range c.values {
+		if v.Key == key {
+			cv = v
+			break
+		}
+	}
+
+	if cv.Key == "" {
+		return "", fmt.Errorf("configuration key not found: %s", key)
+	}
+
+	// Get value from environment or default
+	value := env.GetEnv(key, cv.Default)
+
+	// Validate if validator exists
+	if cv.Validator != nil && cv.Validator(value) != nil {
+		return "", fmt.Errorf("invalid value for key %s", key)
+	}
+
+	return value, nil
+}
+
+// Report outputs all configuration values at the specified log level
+func (c *Config) Report(level string) {
+	c.logger.Debugf("Configuration Report:")
+	for _, cv := range c.values {
+		value, err := c.GetValue(cv.Key)
+		if err != nil {
+			c.logger.Errorf("Error getting value for %s: %v", cv.Key, err)
+			continue
+		}
+
+		if cv.Sensitive {
+			value = "****"
+		}
+
+		switch level {
+		case "DEBUG":
+			c.logger.Debugf("%s: %s", cv.Key, value)
+		case "INFO":
+			c.logger.Infof("%s: %s", cv.Key, value)
+		case "WARN":
+			c.logger.Warnf("%s: %s", cv.Key, value)
+		case "ERROR":
+			c.logger.Errorf("%s: %s", cv.Key, value)
+		default:
+			c.logger.Infof("%s: %s", cv.Key, value)
+		}
+	}
+}

config/reporter_noop.go

@@ -0,0 +1,21 @@
+//go:build !configreport
+
+package config
+
+import (
+    "git.defalsify.org/vise.git/logging"
+)
+
+type Config struct{}
+
+func NewConfig(logger logging.Vanilla) *Config {
+    return &Config{}
+}
+
+func (c *Config) AddKey(key string, defaultValue string, sensitive bool, validator func(string) error) {}
+
+func (c *Config) GetValue(key string) (string, error) {
+    return "", nil
+}
+
+func (c *Config) Report(level string) {}