// @flow
import React from "react";
import { binder } from "@scm-manager/ui-extensions";
import { NavLink } from "../navigation";
import { Route } from "react-router-dom";
import { translate } from "react-i18next";

class ConfigurationBinder {

  i18nNamespace: string = "plugins";

  navLink(to: string, labelI18nKey: string, t: any){
    return <NavLink to={to} label={t(labelI18nKey)} />;
  }

  route(path: string, Component: any){
    return <Route path={path}
                  render={() => Component}
                  exact/>;
  }

  bindGlobal(to: string, labelI18nKey: string, linkName: string, ConfigurationComponent: any) {

    // create predicate based on the link name of the index resource
    // if the linkname is not available, the navigation link and the route are not bound to the extension points
    const configPredicate = (props: Object) => {
      return props.links && props.links[linkName];
    };

    // create NavigationLink with translated label
    const ConfigNavLink = translate(this.i18nNamespace)(({t}) => {
      return this.navLink("/config" + to, labelI18nKey, t);
    });

    // bind navigation link to extension point
    binder.bind("config.navigation", ConfigNavLink, configPredicate);

    // route for global configuration, passes the link from the index resource to component
    const ConfigRoute = ({ url, links, ...additionalProps }) => {
      const link = links[linkName].href;
      return this.route(url + to, <ConfigurationComponent link={link} {...additionalProps} />);
    };

    // bind config route to extension point
    binder.bind("config.route", ConfigRoute, configPredicate);
  }

  bindRepository(to: string, labelI18nKey: string, linkName: string, RepositoryComponent: any) {

    // create predicate based on the link name of the current repository route
    // if the linkname is not available, the navigation link and the route are not bound to the extension points
    const repoPredicate = (props: Object) => {
      return props.repository && props.repository._links && props.repository._links[linkName];
    };

    // create NavigationLink with translated label
    const RepoNavLink = translate(this.i18nNamespace)(({t, url}) => {
      return this.navLink(url + to, labelI18nKey, t);
    });

    // bind navigation link to extension point
    binder.bind("repository.navigation", RepoNavLink, repoPredicate);


    // route for global configuration, passes the current repository to component
    const RepoRoute = ({url, repository, ...additionalProps}) => {
      const link = repository._links[linkName].href;
      return this.route(url + to, <RepositoryComponent repository={repository} link={link} {...additionalProps}/>);
    };

    // bind config route to extension point
    binder.bind("repository.route", RepoRoute, repoPredicate);
  }

}

export default new ConfigurationBinder();