package auth

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

	"gitea.konchin.com/go2025/backend/middlewares"
	"github.com/spf13/viper"
	"github.com/uptrace/bunrouter"
)

type PostGenLoginUrlInput struct {
	UserId string `json:"userId"`
}

type PostGenLoginUrlOutput struct {
	LoginUrl string `json:"loginUrl"`
}

// PostGenLoginUrl
//
//	@param		payload	body		PostGenLoginUrlInput	true	"Payload"
//	@success	200		{object}	PostGenLoginUrlOutput	"Payload"
//	@failure	400
//	@router		/auth/gen-login-url [post]
func (self *Handlers) PostGenLoginUrl(
	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 payload",
			OriginError: err,
		}
	}

	var input PostGenLoginUrlInput
	if err := json.Unmarshal(b, &input); err != nil {
		return middlewares.HTTPError{
			StatusCode:  http.StatusBadRequest,
			Message:     "failed to unmarshal json",
			OriginError: err,
		}
	}

	token, err := self.db.UpsertLoginToken(ctx, input.UserId)
	if err != nil {
		return middlewares.HTTPError{
			StatusCode:  http.StatusInternalServerError,
			Message:     "failed to update token",
			OriginError: err,
		}
	}

	return bunrouter.JSON(w, PostGenLoginUrlOutput{
		LoginUrl: viper.GetString("external-url") +
			"/login?" +
			"token=" + token,
	})
}