Improved logging with zap

internal/auth/oauth2.go

@@ -5,13 +5,15 @@ import (
 	"bytes"
 	"encoding/json"
 	"io"
-	"log/slog"
 	"net/http"
 	"net/url"
+
+	"go.uber.org/zap"
 )
 
 type GiteaOAuth2Handler struct {
 	cfg *config.Config
+	logger *zap.Logger
 }
 
 func NewGiteaOauth2Token(cfg *config.Config) *GiteaOAuth2Handler {
@@ -24,7 +26,7 @@ func (g *GiteaOAuth2Handler) GetGiteaLoginURL(redirectHost string) (string, erro
 	}
 	
 	if redirectHost == "" {
-		slog.Error("Redirect host not provided")
+		g.logger.Error("Redirect host not provided")
 		return "", nil
 	}
 	
@@ -35,7 +37,7 @@ func (g *GiteaOAuth2Handler) GetGiteaLoginURL(redirectHost string) (string, erro
 func (g *GiteaOAuth2Handler) GetGiteaUserEmailByCode(code string) (string, error) {
 
 	if g.cfg.GiteaOauthInstance == "" {
-        slog.Error("Instance URL not provided")
+        g.logger.Error("Instance URL not provided")
 		return "", nil
 	}
 	// No need to verify since we are accesing the gitea once and only for the email
@@ -45,7 +47,7 @@ func (g *GiteaOAuth2Handler) GetGiteaUserEmailByCode(code string) (string, error
 	}
 
 	userInfoUrl := g.cfg.GiteaOauthInstance + "/login/oauth/userinfo"
-	slog.Info(userInfoUrl)
+	g.logger.Info(userInfoUrl)
 	req, err := http.NewRequest("POST", userInfoUrl, nil)
 	if err != nil {
 		return "", err