import { ReactElement, useCallback } from "react";
import { observer } from "mobx-react";
import { useRouter } from "next/router";
// layouts
// components
import { PageHead } from "components/core";
import { ModulesListHeader } from "components/headers";
import { ModuleAppliedFiltersList, ModulesListView } from "components/modules";
// types
// hooks
import { useModuleFilter, useProject } from "hooks/store";
import { AppLayout } from "layouts/app-layout";
import { NextPageWithLayout } from "lib/types";
import { calculateTotalFilters } from "helpers/filter.helper";
import { TModuleFilters } from "@plane/types";

const ProjectModulesPage: NextPageWithLayout = observer(() => {
  const router = useRouter();
  const { projectId } = router.query;
  // store
  const { getProjectById } = useProject();
  const { currentProjectFilters, clearAllFilters, updateFilters } = useModuleFilter();
  // derived values
  const project = projectId ? getProjectById(projectId.toString()) : undefined;
  const pageTitle = project?.name ? `${project?.name} - Modules` : undefined;

  const handleRemoveFilter = useCallback(
    (key: keyof TModuleFilters, value: string | null) => {
      if (!projectId) return;
      let newValues = currentProjectFilters?.[key] ?? [];

      if (!value) newValues = [];
      else newValues = newValues.filter((val) => val !== value);

      updateFilters(projectId.toString(), { [key]: newValues });
    },
    [currentProjectFilters, projectId, updateFilters]
  );

  return (
    <>
      <PageHead title={pageTitle} />
      <div className="h-full w-full flex flex-col">
        {calculateTotalFilters(currentProjectFilters ?? {}) !== 0 && (
          <div className="border-b border-custom-border-200 px-5 py-3">
            <ModuleAppliedFiltersList
              appliedFilters={currentProjectFilters ?? {}}
              handleClearAllFilters={() => clearAllFilters(`${projectId}`)}
              handleRemoveFilter={handleRemoveFilter}
              alwaysAllowEditing
            />
          </div>
        )}
        <ModulesListView />
      </div>
    </>
  );
});

ProjectModulesPage.getLayout = function getLayout(page: ReactElement) {
  return (
    <AppLayout header={<ModulesListHeader />} withProjectWrapper>
      {page}
    </AppLayout>
  );
};

export default ProjectModulesPage;