package apis

import (
	"datamanager/backend/core"
	"github.com/labstack/echo/v5"
	"github.com/labstack/echo/v5/middleware"
	"github.com/pocketbase/pocketbase/tools/rest"
	"strings"
)

const fieldsQueryParam = "fields"

func InitApi(app core.App) (*echo.Echo, error) {
	e := echo.New()
	e.Debug = false
	e.Binder = &rest.MultiBinder{}
	e.JSONSerializer = &rest.Serializer{
		FieldsParam: fieldsQueryParam,
	}

	// configure a custom router
	e.ResetRouterCreator(func(ec *echo.Echo) echo.Router {
		return echo.NewRouter(echo.RouterConfig{
			UnescapePathParamValues: true,
			AllowOverwritingRoute:   true,
		})
	})

	// default middlewares
	e.Pre(middleware.RemoveTrailingSlashWithConfig(middleware.RemoveTrailingSlashConfig{
		Skipper: func(c echo.Context) bool {
			// enable by default only for the API routes
			return !strings.HasPrefix(c.Request().URL.Path, "/api/")
		},
	}))
	e.Use(middleware.Recover())
	e.Use(middleware.Secure())

	// custom error handler
	e.HTTPErrorHandler = func(c echo.Context, err error) {
		if err == nil {
			return // no error
		}

		if c.Response().Committed {
			return // already committed
		}

	}

	return e, nil
}