import * as Sentry from '@sentry/vue';
import { defineNuxtPlugin, useRouter } from 'nuxt/app';
import type { RouteLocationNormalized } from 'vue-router';

import { executeUnlessPrerendering } from '~/src/helpers.ts';

const USER_AT = /^\/@.+/;
const USER_SUBPAGE = /^\/(u|card)\/.*/;

export const normalizeUrl = (page: URL): URL => {
    if (USER_AT.test(page.pathname)) {
        page.pathname = page.pathname.replace(USER_AT, '/@--redacted--');
    }
    if (USER_SUBPAGE.test(page.pathname)) {
        page.pathname = page.pathname.replace(USER_SUBPAGE, '/$1/--redacted--');
    }
    page.search = '';
    page.hash = '';
    return page;
};

export default defineNuxtPlugin((nuxtApp) => {
    const router = useRouter();

    const trackPageview = (route: RouteLocationNormalized): void => {
        executeUnlessPrerendering(() => {
            try {
                const toUrl = normalizeUrl(new URL(route.fullPath, window.location.href));
                console.debug('[analytics] tracking page view:', toUrl.toString());
                useTrackPageview({
                    data: {
                        url: toUrl.toString(),
                    },
                });
            } catch (error) {
                Sentry.captureException(error);
            }
        })();
    };

    // Track the initial page load
    nuxtApp.hook('app:mounted', () => {
        trackPageview(router.currentRoute.value);
    });

    // Track client-side navigation
    router.afterEach((to: RouteLocationNormalized, from: RouteLocationNormalized) => {
        const toUrl = normalizeUrl(new URL(to.fullPath, window.location.href));
        const fromUrl = normalizeUrl(new URL(from.fullPath, window.location.href));
        if (toUrl.toString() === fromUrl.toString()) {
            // Same page, but different search param
            return;
        }
        trackPageview(to);
    });
});