feat: configurable component-level logging (#575)

* Refactor logging to use centralized logger utility

- Removed direct usage of zerolog in multiple files and replaced it with a centralized logging utility in the `utils` package.
- Introduced `Loggers` struct to manage different loggers (Audit, HTTP, App) with configurable levels and outputs.
- Updated all relevant files to utilize the new logging structure, ensuring consistent logging practices across the application.
- Enhanced error handling and logging messages for better traceability and debugging.

* refactor: update logging implementation to use new logger structure

* Refactor logging to use tlog package

- Replaced instances of utils logging with tlog in various controllers, services, and middleware.
- Introduced audit logging for login success, login failure, and logout events.
- Created tlog package with structured logging capabilities using zerolog.
- Added tests for the new tlog logger functionality.

* refactor: update logging configuration in environment files

* fix: adding coderabbit suggestions

* fix: ensure correct audit caller

* fix: include reason in audit login failure logs

internal/utils/tlog/log_wrapper.go

@@ -0,0 +1,86 @@
+package tlog
+
+import (
+	"os"
+	"strings"
+	"time"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	"github.com/steveiliop56/tinyauth/internal/config"
+)
+
+type Logger struct {
+	Audit zerolog.Logger
+	HTTP  zerolog.Logger
+	App   zerolog.Logger
+}
+
+var (
+	Audit zerolog.Logger
+	HTTP  zerolog.Logger
+	App   zerolog.Logger
+)
+
+func NewLogger(cfg config.LogConfig) *Logger {
+	baseLogger := log.With().
+		Timestamp().
+		Caller().
+		Logger().
+		Level(parseLogLevel(cfg.Level))
+
+	if !cfg.Json {
+		baseLogger = baseLogger.Output(zerolog.ConsoleWriter{
+			Out:        os.Stderr,
+			TimeFormat: time.RFC3339,
+		})
+	}
+
+	return &Logger{
+		Audit: createLogger("audit", cfg.Streams.Audit, baseLogger),
+		HTTP:  createLogger("http", cfg.Streams.HTTP, baseLogger),
+		App:   createLogger("app", cfg.Streams.App, baseLogger),
+	}
+}
+
+func NewSimpleLogger() *Logger {
+	return NewLogger(config.LogConfig{
+		Level: "info",
+		Json:  false,
+		Streams: config.LogStreams{
+			HTTP:  config.LogStreamConfig{Enabled: true},
+			App:   config.LogStreamConfig{Enabled: true},
+			Audit: config.LogStreamConfig{Enabled: false},
+		},
+	})
+}
+
+func (l *Logger) Init() {
+	Audit = l.Audit
+	HTTP = l.HTTP
+	App = l.App
+}
+
+func createLogger(component string, streamCfg config.LogStreamConfig, baseLogger zerolog.Logger) zerolog.Logger {
+	if !streamCfg.Enabled {
+		return zerolog.Nop()
+	}
+	subLogger := baseLogger.With().Str("log_stream", component).Logger()
+	// override level if specified, otherwise use base level
+	if streamCfg.Level != "" {
+		subLogger = subLogger.Level(parseLogLevel(streamCfg.Level))
+	}
+	return subLogger
+}
+
+func parseLogLevel(level string) zerolog.Level {
+	if level == "" {
+		return zerolog.InfoLevel
+	}
+	parsedLevel, err := zerolog.ParseLevel(strings.ToLower(level))
+	if err != nil {
+		log.Warn().Err(err).Str("level", level).Msg("Invalid log level, defaulting to info")
+		parsedLevel = zerolog.InfoLevel
+	}
+	return parsedLevel
+}