Feat: works on my machine

handlers/auth/postRegister.go

@@ -0,0 +1,66 @@
+package auth
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+
+	"gitea.konchin.com/ytshih/inp2025/middlewares"
+	"gitea.konchin.com/ytshih/inp2025/models"
+	"gitea.konchin.com/ytshih/inp2025/utils"
+	"github.com/uptrace/bunrouter"
+)
+
+func (self *Handlers) PostRegister(
+	w http.ResponseWriter,
+	req bunrouter.Request,
+) error {
+	ctx := req.Context()
+
+	b, err := io.ReadAll(req.Body)
+	if err != nil {
+		return middlewares.HTTPError{
+			StatusCode:  http.StatusBadRequest,
+			Message:     "failed to read body payload",
+			OriginError: err,
+		}
+	}
+
+	var user models.User
+	if err := json.Unmarshal(b, &user); err != nil {
+		return middlewares.HTTPError{
+			StatusCode:  http.StatusBadRequest,
+			Message:     "failed to unmarshal json into user",
+			OriginError: err,
+		}
+	}
+
+	res, err := self.db.NewInsert().
+		Model(&user).
+		On("CONFLICT (username) DO NOTHING").
+		Exec(ctx)
+	if err != nil {
+		return middlewares.HTTPError{
+			StatusCode:  http.StatusInternalServerError,
+			Message:     "failed to insert user",
+			OriginError: err,
+		}
+	}
+	if cnt, err := res.RowsAffected(); err != nil || cnt == 0 {
+		if err != nil {
+			return middlewares.HTTPError{
+				StatusCode:  http.StatusInternalServerError,
+				Message:     "failed to get affected row count",
+				OriginError: err,
+			}
+		}
+		if cnt == 0 {
+			return middlewares.HTTPError{
+				StatusCode: http.StatusBadRequest,
+				Message:    "username already exist",
+			}
+		}
+	}
+
+	return utils.Success(w)
+}