feat: introduce log format config option

Author: muety

README.md

@@ -191,6 +191,7 @@ You can specify configuration options either via a config file (default: `config
 | `server.listen_ipv6` /<br> `WAKAPI_LISTEN_IPV6`                                             | `::1`                                            | IPv6 network address to listen on (set to `'-'` to disable IPv6)                                                                                                                |
 | `server.listen_socket` /<br> `WAKAPI_LISTEN_SOCKET`                                         | -                                                | UNIX socket to listen on (set to `'-'` to disable UNIX socket)                                                                                                                  |
 | `server.listen_socket_mode` /<br> `WAKAPI_LISTEN_SOCKET_MODE`                               | `0666`                                           | Permission mode to create UNIX socket with                                                                                                                                      |
+| `server.log_format` /<br> `WAKAPI_LOG_FORMAT`                                               | `text`                                           | Format for structured logging (plain text or JSON) (options: `text`, `json`)                                                                                                    |
 | `server.timeout_sec` /<br> `WAKAPI_TIMEOUT_SEC`                                             | `30`                                             | Request timeout in seconds                                                                                                                                                      |
 | `server.tls_cert_path` /<br> `WAKAPI_TLS_CERT_PATH`                                         | -                                                | Path of SSL server certificate (leave blank to not use HTTPS)                                                                                                                   |
 | `server.tls_key_path` /<br> `WAKAPI_TLS_KEY_PATH`                                           | -                                                | Path of SSL server private key (leave blank to not use HTTPS)                                                                                                                   |

config.default.yml

@@ -8,6 +8,7 @@ server:
   listen_ipv6: ::1                    # set to '-' to disable ipv6
   listen_socket:                      # set to '-' to disable unix sockets
   listen_socket_mode: 0666            # permission mode to create unix socket with
+  log_format: text                    # format for structured logging (text or json)
   timeout_sec: 30                     # request timeout
   tls_cert_path:                      # leave blank to not use https
   tls_key_path:                       # leave blank to not use https

config/config.go

@@ -176,6 +176,7 @@ type serverConfig struct {
 	ListenSocket     string   `yaml:"listen_socket" default:"" env:"WAKAPI_LISTEN_SOCKET"`
 	ListenSocketMode uint32   `yaml:"listen_socket_mode" default:"0666" env:"WAKAPI_LISTEN_SOCKET_MODE"`
 	TimeoutSec       int      `yaml:"timeout_sec" default:"30" env:"WAKAPI_TIMEOUT_SEC"`
+	LogFormat        string   `yaml:"log_format" default:"text" env:"WAKAPI_LOG_FORMAT"`
 	BasePath         string   `yaml:"base_path" default:"/" env:"WAKAPI_BASE_PATH"`
 	PublicUrl        string   `yaml:"public_url" default:"http://localhost:3000" env:"WAKAPI_PUBLIC_URL"`
 	PublicNetUrl     *url.URL `yaml:"-"`
@@ -592,7 +593,7 @@ func Load(configFlag string, version string) *Config {
 
 	env = config.Env
 
-	InitLogger(config.IsDev())
+	InitLogger(config.Server.LogFormat)
 
 	config.Version = strings.TrimSpace(version)
 	tagVersionMatch, _ := regexp.MatchString(`\d+\.\d+\.\d+`, config.Version)

config/logging.go

@@ -1,20 +1,16 @@
 package config
 
 import (
-	"github.com/Marlliton/slogpretty"
 	"log/slog"
 	"os"
 	"time"
+
+	"github.com/Marlliton/slogpretty"
 )
 
-func InitLogger(isDev bool) {
+func InitLogger(logFormat string) {
 	var handler slog.Handler
-	if isDev {
-		handler = slogpretty.New(os.Stdout, &slogpretty.Options{
-			Level:    slog.LevelDebug,
-			Colorful: true,
-		})
-	} else {
+	if logFormat == "json" {
 		handler = slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
 			Level: slog.LevelInfo,
 			ReplaceAttr: func(groups []string, a slog.Attr) slog.Attr {
@@ -25,6 +21,11 @@ func InitLogger(isDev bool) {
 				}
 				return a
 			}})
+	} else {
+		handler = slogpretty.New(os.Stdout, &slogpretty.Options{
+			Level:    slog.LevelDebug,
+			Colorful: true,
+		})
 	}
 	slog.SetDefault(slog.New(handler))
 }