From 1168ac60d3a22c0d354f291fd657ad302df6ec05 Mon Sep 17 00:00:00 2001
From: Anhgelus Morhtuuzh <william@herges.fr>
Date: Thu, 2 Oct 2025 18:22:34 +0200
Subject: feat(backend): use httplog

---
 backend/data.go   |  6 ++----
 backend/router.go | 34 ++++++++++++++++++++++++++++++++--
 go.mod            |  2 ++
 go.sum            |  2 ++
 main.go           |  4 +++-
 5 files changed, 41 insertions(+), 7 deletions(-)

diff --git a/backend/data.go b/backend/data.go
index e1a8478..bc74ba5 100644
--- a/backend/data.go
+++ b/backend/data.go
@@ -25,13 +25,11 @@ func (d *data) handleGeneric(w http.ResponseWriter, name string) {
 		},
 	}).ParseFS(templates, fmt.Sprintf("templates/%s.html", name), "templates/base.html")
 	if err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
-		return
+		panic(err)
 	}
 	err = t.ExecuteTemplate(w, "base.html", d)
 	if err != nil {
-		w.WriteHeader(http.StatusInternalServerError)
-		return
+		panic(err)
 	}
 }
 
diff --git a/backend/router.go b/backend/router.go
index b1efea8..8ed63fa 100644
--- a/backend/router.go
+++ b/backend/router.go
@@ -3,22 +3,52 @@ package backend
 import (
 	"embed"
 	"io/fs"
+	"log/slog"
 	"net/http"
+	"os"
 	"strings"
 	"time"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
+	"github.com/go-chi/httplog/v3"
 )
 
+const Version = "0.1.0"
+
 //go:embed templates
 var templates embed.FS
 
-func NewRouter() *chi.Mux {
+func NewRouter(debug bool) *chi.Mux {
+	logFormat := httplog.SchemaECS.Concise(!debug)
+
+	logger := slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
+		ReplaceAttr: logFormat.ReplaceAttr,
+	})).With(
+		slog.String("app", "anhgelus/small-web"),
+		slog.String("version", Version),
+	)
+
+	logLevel := slog.LevelWarn
+	if debug {
+		logLevel = slog.LevelDebug
+	}
+
 	r := chi.NewRouter()
 
 	r.Use(middleware.Timeout(30 * time.Second))
-	r.Use(middleware.Logger)
+	r.Use(httplog.RequestLogger(logger, &httplog.Options{
+		Level: logLevel,
+		// Set log output to Elastic Common Schema (ECS) format.
+		Schema:        logFormat,
+		RecoverPanics: true,
+		Skip: func(req *http.Request, respStatus int) bool {
+			return respStatus == http.StatusNotFound || respStatus == http.StatusMethodNotAllowed
+		},
+		// Optionally, log selected request/response headers explicitly.
+		LogRequestHeaders:  []string{"Origin"},
+		LogResponseHeaders: []string{},
+	}))
 
 	return r
 }
diff --git a/go.mod b/go.mod
index a5ede82..35e75ed 100644
--- a/go.mod
+++ b/go.mod
@@ -6,3 +6,5 @@ require (
 	github.com/go-chi/chi/v5 v5.2.3
 	github.com/joho/godotenv v1.5.1
 )
+
+require github.com/go-chi/httplog/v3 v3.2.2 // indirect
diff --git a/go.sum b/go.sum
index fe271b4..abad55a 100644
--- a/go.sum
+++ b/go.sum
@@ -1,4 +1,6 @@
 github.com/go-chi/chi/v5 v5.2.3 h1:WQIt9uxdsAbgIYgid+BpYc+liqQZGMHRaUwp0JUcvdE=
 github.com/go-chi/chi/v5 v5.2.3/go.mod h1:L2yAIGWB3H+phAw1NxKwWM+7eUH/lU8pOMm5hHcoops=
+github.com/go-chi/httplog/v3 v3.2.2 h1:G0oYv3YYcikNjijArHFUlqfR78cQNh9fGT43i6StqVc=
+github.com/go-chi/httplog/v3 v3.2.2/go.mod h1:N/J1l5l1fozUrqIVuT8Z/HzNeSy8TF2EFyokPLe6y2w=
 github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
 github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
diff --git a/main.go b/main.go
index 11ebbe7..e1c13bb 100644
--- a/main.go
+++ b/main.go
@@ -24,6 +24,7 @@ var (
 	configFile = "config.toml"
 	port       = 8000
 	publicDir  = "public"
+	dev        = false
 )
 
 func init() {
@@ -49,12 +50,13 @@ func init() {
 		publicDir = v
 	}
 	flag.StringVar(&publicDir, "public", publicDir, "public directory")
+	flag.BoolVar(&dev, "dev", false, "development mode")
 }
 
 func main() {
 	flag.Parse()
 
-	r := backend.NewRouter()
+	r := backend.NewRouter(dev)
 
 	backend.HandleHome(r)
 
-- 
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