package fiber

import (
	"errors"

	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/template/html/v2"

	"git.dmitriygnatenko.ru/dima/dmitriygnatenko-v2/internal/mapper"
	"git.dmitriygnatenko.ru/dima/dmitriygnatenko-v2/internal/services/i18n"
	"git.dmitriygnatenko.ru/dima/dmitriygnatenko-v2/internal/templates/functions"
)

func getViewsEngine(sp ServiceProvider) *html.Engine {
	engine := html.New(templatesPath, ".html")

	engine.AddFunc("now", functions.Now)
	engine.AddFunc("noescape", functions.NoEscape)
	engine.AddFunc("concat", functions.Concat)
	engine.AddFunc("gridsep", functions.GridSep)
	engine.AddFunc("version", functions.Version(sp))
	engine.AddFunc("trans", functions.Trans)
	engine.AddFunc("link", functions.Link)

	return engine
}

func getErrorHandler() fiber.ErrorHandler {
	return func(fctx *fiber.Ctx, err error) error {
		lang := mapper.LanguageFromContext(fctx)
		errCode := fiber.StatusInternalServerError
		var e *fiber.Error
		if errors.As(err, &e) {
			errCode = e.Code
		}

		var renderData fiber.Map

		if errCode == fiber.StatusNotFound {
			renderData = fiber.Map{
				"pageTitle": i18n.T(lang, "page_not_found_err_title"),
				"code":      fiber.StatusNotFound,
				"text":      i18n.T(lang, "page_not_found_err_desc"),
			}
		} else {
			renderData = fiber.Map{
				"pageTitle": i18n.T(lang, "internal_err_title"),
				"code":      fiber.StatusInternalServerError,
				"text":      i18n.T(lang, "internal_err_desc"),
			}
		}

		renderData["headTitle"] = i18n.T(lang, "head_title")

		return fctx.Render("error", renderData, "_layout")
	}
}