package auth

import (
	"encoding/json"
	"io"
	"net/http"

	"gitea.konchin.com/ytshih/inp2025/game/backend/middlewares"
	"gitea.konchin.com/ytshih/inp2025/game/models"
	"gitea.konchin.com/ytshih/inp2025/game/types"
	"gitea.konchin.com/ytshih/inp2025/game/utils"
	"github.com/uptrace/bunrouter"
)

// PostRegister
//
//	@Accept		json
//	@Param		request	body	models.User	true	"query params"
//	@Success	200
//	@Failure	400
//	@Router		/auth/register [post]
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,
		}
	}

	if err := self.db.InsertUser(ctx, user); err != nil {
		if err == types.UsernameConflictError {
			return middlewares.HTTPError{
				StatusCode:  http.StatusBadRequest,
				Message:     "username already exist",
				OriginError: err,
			}
		}
		return middlewares.HTTPError{
			StatusCode:  http.StatusInternalServerError,
			Message:     "failed to insert user",
			OriginError: err,
		}
	}

	return utils.Success(w)
}