// Supporting files
import { createWebHistory, createRouter } from "vue-router";
import { storeActions } from "@/constants/store-actions";
import { storeMutations } from "../constants/store-mutations";
import { lazyLoadComponent } from "@/router/dynamic-routing/component-loader.js";
import { routingTable } from "@/router/router-constants/routing-table.js";
import { globalEvents, globalEventTypes } from "@/constants/events";
import { queryStrings } from "@/constants/query-strings";
import { getQuerystringParameter } from "@/helpers/querystring-helper";
import { getDeviceIdValue } from "@/helpers/heritage-integration/cookie-helper";
import { showFmgLoadingModal } from "@/helpers/loading-modal-helper";
import { fmgPageValues, funnelStartPageName } from "@/router/router-constants/fmgPage-values";

// Heritage integration
import { isSavedSessionStillActive } from "@/helpers/heritage-integration/session-helper";
import {
    updateOrCreateFunnelCookie,
    getFunnelCookie,
    updateSessionIdCookie,
    deleteFunnelCookie,
} from "@/helpers/heritage-integration/cookie-helper";
import { loadSessionIfPresent, saveSession } from "@/helpers/heritage-integration/order-helper";
import {
    getPageToRouteExistingOrderTo,
    navigateToHeritageFunnel,
} from "@/helpers/heritage-integration/navigation-helper";

import baseMixin from "@/mixins/base-mixin";
import eventBus from "@/helpers/event-bus/event-bus";
import store from "@/store";
import analyticsMixin from "@/mixins/analytics-mixin";
import { experimentTriggers } from "../constants/experiments";
import { applicationConfig } from "../constants/application-config";
import { shouldStripPromoQueryString } from "@/helpers/promotions-helper";
import bailout from "@/layouts/bailout/bailout";
import { nextTick } from "vue";

const routes = [
    {
        path: "/bailout",
        name: "bailout",
        component: bailout,
    },
    {
        path: "/",
        name: "root",
        async beforeEnter(to, from, next) {
            // If we have no query string, or we don't have the FmgPage query string.
            try {
                await analyticsMixin.methods.validateSession();

                if (getFunnelCookie()?.SuppressConceptFunnel) {
                    await navigateToHeritageFunnel({ shouldSaveSession: false });
                    return next(false);
                }

                // If the saved session has timed out, clear the session, execute 404 logic.
                if (getFunnelCookie() !== null && !isSavedSessionStillActive()) {
                    await baseMixin.methods.dispatchStoreAction(storeActions.RESET_STATE);
                    deleteFunnelCookie();
                    GoToFunnelStartOn404(next);
                }

                // Intercept all navigation if a submitted order exists in storage
                if (store.getters.hasSubmittedOrder) {
                    if (to.query.fmgPage !== funnelStartPageName) {
                        to.query.fmgPage = fmgPageValues.CONFIRMATION;
                    }
                }
                // On entering the funnel "fresh", read cookie information, decide what to do next.
                else if (from.redirectedFrom === undefined) {
                    // clear the saveSessionPromise - if it exists in the vuex store but a new instance was created
                    //   the saveSessionPromise will no longer point to a valid promise
                    baseMixin.methods.dispatchStoreAction(storeActions.RESET_SAVE_SESSION_PROMISE);

                    if (!to.query.fmgPage?.startsWith("payment")) {
                        //payment pages used to return from safelitehop so exclude here
                        // Remove the parameter after quote release

                        // for testing end to end locally, see if there is a referralNumber on the querystring
                        // that could have changed in heritage and then stick it in the store and then update the cookie
                        // so load-session runs properly. this can be removed when heritage goes away
                        const referralNumber = getQuerystringParameter(
                            queryStrings.REFERRAL_NUMBER
                        );
                        const parentAccount = getQuerystringParameter(queryStrings.PARENT_ACCOUNT);
                        const correlationId = getQuerystringParameter(queryStrings.CORRELATION_ID);
                        const leadGenYear = getQuerystringParameter(queryStrings.VEHICLE_YEAR);
                        const leadGenMake = getQuerystringParameter(queryStrings.VEHICLE_MAKE);
                        const leadGenModel = getQuerystringParameter(queryStrings.VEHICLE_MODEL);
                        const leadGenStyle = getQuerystringParameter(queryStrings.VEHICLE_STYLE);
                        const leadGenDamage = getQuerystringParameter(queryStrings.VEHICLE_DAMAGE);
                        const leadGenZipCode = getQuerystringParameter(queryStrings.SERVICE_ZIP);
                        const leadGenEmail = getQuerystringParameter(queryStrings.EMAIL);
                        const leadGenIsInsurance = getQuerystringParameter(
                            queryStrings.IS_INSURANCE
                        );
                        const leadGenVinSelection = getQuerystringParameter(
                            queryStrings.VIN_SELECTION
                        );
                        const leadGenServicePackage = getQuerystringParameter(
                            queryStrings.SERVICE_PACKAGE
                        );
                        const leadGenNumberOfChips = getQuerystringParameter(
                            queryStrings.NUMBER_OF_CHIPS
                        );
                        if (referralNumber) {
                            store.commit(storeMutations.UPDATE_REFERRAL_NUMBER, referralNumber);
                            store.commit(storeMutations.UPDATE_PARENT_ACCT_NUMBER, parentAccount);
                            store.commit(
                                storeMutations.UPDATE_REFERRAL_CORRELATION_ID,
                                correlationId
                            );
                            updateOrCreateFunnelCookie();
                        }
                        if (
                            leadGenYear &&
                            leadGenMake &&
                            leadGenModel &&
                            leadGenStyle &&
                            leadGenDamage &&
                            leadGenZipCode &&
                            leadGenEmail &&
                            leadGenIsInsurance &&
                            (leadGenDamage.toUpperCase() == "WINDSHIELDREPAIR" ||
                                leadGenVinSelection?.length > 0) &&
                            (leadGenIsInsurance == "false" || leadGenServicePackage?.length > 0) &&
                            (leadGenDamage.toUpperCase() != "WINDSHIELDREPAIR" ||
                                leadGenNumberOfChips?.length > 0)
                        ) {
                            if (!store.getters.applicationUser.triggeredSiteEntry) {
                                store.commit(storeMutations.UPDATE_IS_LEAD_GEN, true);
                                store.commit(storeMutations.UPDATE_LEAD_GEN_YEAR, leadGenYear);
                                store.commit(storeMutations.UPDATE_LEAD_GEN_MAKE, leadGenMake);
                                store.commit(storeMutations.UPDATE_LEAD_GEN_MODEL, leadGenModel);
                                store.commit(storeMutations.UPDATE_LEAD_GEN_STYLE, leadGenStyle);
                                store.commit(
                                    storeMutations.UPDATE_LEAD_GEN_DAMAGE_TYPE,
                                    leadGenDamage
                                );
                                if (leadGenDamage.toUpperCase() == "WINDSHIELDREPLACE") {
                                    store.commit(storeMutations.UPDATE_LEAD_GEN_IS_REPAIR, false);
                                    store.commit(
                                        storeMutations.UPDATE_LEAD_GEN_NUMBER_OF_CHIPS,
                                        null
                                    );
                                } else if (leadGenDamage.toUpperCase() == "WINDSHIELDREPAIR") {
                                    store.commit(storeMutations.UPDATE_LEAD_GEN_IS_REPAIR, true);
                                    store.commit(
                                        storeMutations.UPDATE_LEAD_GEN_NUMBER_OF_CHIPS,
                                        leadGenNumberOfChips
                                    );
                                }
                                store.commit(
                                    storeMutations.UPDATE_LEAD_GEN_ZIP_CODE,
                                    leadGenZipCode
                                );
                                store.commit(
                                    storeMutations.UPDATE_LEAD_GEN_EMAIL_ADDRESS,
                                    leadGenEmail
                                );
                                if (leadGenIsInsurance == "true") {
                                    store.commit(storeMutations.UPDATE_LEAD_GEN_IS_INSURANCE, true);
                                    store.commit(
                                        storeMutations.UPDATE_LEAD_GEN_SERVICE_PACKAGE,
                                        leadGenServicePackage
                                    );
                                }
                                if (leadGenDamage.toUpperCase() != "WINDSHIELDREPAIR") {
                                    store.commit(
                                        storeMutations.UPDATE_LEAD_GEN_VIN_SELECTION,
                                        leadGenVinSelection
                                    );
                                }
                            }
                        }

                        const loadSessionResponse = await loadSessionIfPresent(
                            to.query.isInsurance != null
                                ? to.query.isInsurance == "true"
                                    ? true
                                    : false
                                : null,
                            to.query.fmgPage
                        );

                        const pageToRedirectTo = await getPageToRouteExistingOrderTo(to);

                        // This logic may determine that the user should be sent to heritage -- if so, do that here.
                        if (pageToRedirectTo === fmgPageValues.HERITAGE) {
                            await navigateToHeritageFunnel({ shouldSaveSession: false });
                            return next(false);
                        }

                        // Assign our fmgPage so it will load normally like the other pages.
                        to.query.fmgPage = pageToRedirectTo;
                    }
                }

                // Reroute around pages that should not be available.

                // Exception 1: Integrated Users should not see vehicle or quote pages.
                if (store.getters.requiresVerifiedRedirecting) {
                    if (to.query.fmgPage === fmgPageValues.VEHICLE) {
                        to.query.fmgPage = fmgPageValues.VEHICLE_DAMAGE;
                    } else if (
                        to.query.fmgPage === fmgPageValues.QUOTE ||
                        to.query.fmgPage === fmgPageValues.INSURANCE_COMPANY
                    ) {
                        // Push to heritage if going to quote & integrated.
                        await navigateToHeritageFunnel({ shouldSaveSession: false });
                        return next(false);
                    }
                }

                await runExperiments(to.query.fmgPage);

                // Process funnel cookie.
                updateOrCreateFunnelCookie();

                // If we already have our route, go to it.
                if (router.hasRoute(to.query.fmgPage)) {
                    // Since our route is already in scope, we can grab the component from it and call the arePagePrerequisitesValid function.
                    let component = router
                        .getRoutes()
                        .filter((x) => x.name === to.query.fmgPage)[0].components;

                    // If the component hasn't been loaded fully, load it before we check prerequisites.
                    if (component.default.methods === undefined) {
                        component = await component.default();
                    }

                    if (!arePagePrerequisitesValid(component)) {
                        console.log("Page prereq error: " + component.default.name);
                        GoToFunnelStartOn404(next);
                    }

                    return next({ name: to.query.fmgPage, query: to.query, params: to.params });
                }

                if (!isExistingFmgPageName(to.query.fmgPage)) {
                    console.log("Not an existing fmg page name:" + to.query.fmgPage);
                    GoToFunnelStartOn404(next);
                    return;
                }

                // Get route info for the given url. Names will have a 1:1 relationship with names in the Cms.
                const routeData = GetRouteInfoFromPageName(to.query.fmgPage);

                // Add our dynamic route.
                router.addRoute({
                    path: routeData[0].path, // Always the same path, because we control it with query strings.
                    name: routeData[0].name,
                    component: routeData[0].component,
                });

                // Call the next components arePagePrerequisitesValid method before load.
                // If it returns false, use the 404 logic.
                const nextComponent = await router
                    .getRoutes()
                    .filter((x) => x.name === routeData[0].name)[0]
                    .components.default();

                if (!arePagePrerequisitesValid(nextComponent)) {
                    console.log(
                        "Page Prereqs not valid for next component: " + nextComponent.default.name
                    );
                    GoToFunnelStartOn404(next);
                }

                // Assign current query string parameters, as well as our fmgPage one.
                next({
                    name: routeData[0].name,
                    query: Object.assign(to.query, { fmgPage: routeData[0].name }),
                    params: to.params,
                });
            } catch (error) {
                global.$logger.logError(`Routing ${error.stack}`);

                if (to.query?.fmgPage === funnelStartPageName) {
                    deleteFunnelCookie();
                    await baseMixin.methods.dispatchStoreAction(storeActions.RESET_STATE);
                }

                // If we don't have a route, go to our 404 page.
                GoToFunnelStartOn404(next);
            }
        },
    },
];

const router = createRouter({
    history: createWebHistory("/fmg/"),
    routes,
    //Cause "page" to begin at the top when route chanages.
    scrollBehavior(to, from, savedPosition) {
        // always scroll to top
        return { top: 0 };
    },
});

//---------------------------------------------------------- Router Functions ----------------------------------------------------------

router.beforeEach(async (to, from, next) => {
    // set lastNavigationPage here to capture state before API calls for analytics.
    // use current page url query string name when to.name is "root" (due to unresolved navigation in beforeEach)
    router.lastNavigationPage = to.name == "root" ? analyticsMixin.methods.getPageName() : to.name;

    const fromQueryPage = from.query?.fmgPage;
    if (fromQueryPage === undefined) {
        showFmgLoadingModal(true);
    }

    const toQueryPage = to.query?.fmgPage;
    const notToPIAReturn = toQueryPage != fmgPageValues.PAYMENT_PIA_RETURN;
    const isInIframe = window !== window.top;

    if (store.getters.isLeadGen) {
        // Check if alert event is on the bus
        const alertEvent = eventBus.readEventFromBus(
            globalEvents.Categories.GLOBAL_ALERT,
            globalEvents.SubCategories.PAGE_NOT_FOUND
        );
        //Uknown alerts most likely were added by a failed api call in global-methods
        const unknownAlertEvent = eventBus.readEventFromBus(
            globalEvents.Categories.GLOBAL_ALERT,
            globalEvents.SubCategories.UNKNOWN_ERROR
        );
        // If alert event is on the bus, then display the alert
        if (alertEvent !== undefined || unknownAlertEvent !== undefined) {
            store.commit(storeMutations.UPDATE_IS_LEAD_GEN, false);
        }
    }
    // fromPaymentToConfirmation workaround for navigating from an iframe but
    // isInIframe evaluates to false for some reason when navigating from payment to confirmation
    const fromPaymentToConfirmation =
        fromQueryPage === fmgPageValues.PAYMENT && toQueryPage === fmgPageValues.CONFIRMATION;

    if ((isInIframe && notToPIAReturn) || fromPaymentToConfirmation) {
        const newUrl = `${window.top.location.origin}${to.href}`;
        window.top.location.href = newUrl;
        // Refresh page if navigating to self to prevent locking.
        // For now only carved out for vehicle; all modals are opened through anchor tags at the moment,
        // which also self navigate, but relied on the page remaining the same on self-navigation.
    } else if (toQueryPage === fromQueryPage && toQueryPage === getRedirectedStartPage()) {
        router.go(0);
    } else {
        next();
    }
});

router.afterEach(async (to, from) => {
    // Update lastPageVisited in the store
    store.commit(storeMutations.UPDATE_LAST_PAGE_VISITED, to.name);

    // If saving on navigation is requested, check for saved SessionId or EmailAddress to determine if saving is appropriate
    if (eval(to.params.isSavingNavigation)) {
        if (
            store.getters.applicationUser.savedSessionId ||
            store.getters.order.customer?.emailAddress
        ) {
            await saveSession({ pageNameToLog: to.query.fmgPage });
        }
    }
    if (!store.getters.isLeadGen) {
        showFmgLoadingModal(false);
    }

    // Push page view to GA
    analyticsMixin.methods.pushPageViewToGA();

    // Push experiments to Data Layer
    analyticsMixin.methods.pushExperimentsToDataLayer();

    // Push current order status to Data Layer
    analyticsMixin.methods.pushOrderToDataLayer();
});

router.navigateWithoutSaving = (
    scenario,
    currentRoute,
    optionalQuery = {},
    optionalParams = {},
    optionalPageData = {}
) => {
    navigate(scenario, currentRoute, false, optionalQuery, optionalParams, optionalPageData);
};

router.navigateWithSaving = (
    scenario,
    currentRoute,
    optionalQuery = {},
    optionalParams = {},
    optionalPageData = {}
) => {
    navigate(scenario, currentRoute, true, optionalQuery, optionalParams, optionalPageData);
};

router.navigateToExternalUrl = (url, optionalQuery = {}) => {
    navigateToUrl(url, optionalQuery);
};

router.navigateError = () => {
    DisplayPageError();
};

//Use this navigation when you need to call next() explicitly. beforeRouteEnter is a good example.
router.overrideNavigation = (
    scenario,
    currentRoute,
    next,
    isSavingNavigation,
    optionalQuery = {},
    optionalParams = {},
    optionalPageData
) => {
    navigate(
        scenario,
        currentRoute,
        isSavingNavigation,
        optionalQuery,
        optionalParams,
        optionalPageData
    );
    next();
};

router.getNextPage = () => nextPageName;

// PRIVATE VARIABLES

var nextPageName;

// PRIVATE FUNCTIONS

// Navigate to the next route, depending on the scenario.
async function navigate(
    scenario,
    currentRoute,
    isSavingNavigation,
    optionalQuery = {},
    optionalParams = {},
    optionalPageData = {}
) {
    if (!scenario) {
        console.error("No scenario provided. Please review the routing table.");
        return;
    }

    // Match our maps up and navigate if we have a destination.
    const matchingScenarioMap = getNavigationMap(scenario, currentRoute);
    const destinationFmgPageValue = matchingScenarioMap.destinationFmgPageValue;

    if (destinationFmgPageValue !== undefined) {
        // We're always pushing the same path, just changing query strings. Make sure our optional query strings get combined with our fmgPage one.

        nextPageName = destinationFmgPageValue;

        // Update page data to the store for next page if provided. Otherwise, keep existing page data or set to empty object
        const existingPageDataForPage = store.getters.pageData(destinationFmgPageValue);
        baseMixin.methods.savePageDataToStore(
            destinationFmgPageValue,
            Object.keys(optionalPageData).length > 0
                ? optionalPageData
                : existingPageDataForPage ?? {}
        );

        optionalParams.isSavingNavigation = isSavingNavigation;

        // add querystring params to the route. if they are already in the store then no need to add them
        var queryStringsObject = {
            fmgPage: destinationFmgPageValue,
        };

        const hasZip = getQuerystringParameter(queryStrings.ZIP_CODE);
        const zip = getQuerystringParameter(queryStrings.ZIP_CODE);
        const promo = getQuerystringParameter(queryStrings.PROMO);
        const pageError = getQuerystringParameter(queryStrings.PAGE_ERROR);

        if (
            hasZip &&
            (store.getters.order.serviceLocation.zipCode === undefined ||
                store.getters.order.serviceLocation.zipCode == null) &&
            (store.getters.order.vehicle.registration.zipCode === undefined ||
                store.getters.order.vehicle.registration.zipCode == null)
        ) {
            queryStringsObject[queryStrings.ZIP_CODE] = zip;
        }

        if (promo && !shouldStripPromoQueryString(currentRoute.query.fmgPage)) {
            queryStringsObject[queryStrings.PROMO] = promo;
        }

        if (pageError) {
            queryStringsObject[queryStrings.PAGE_ERROR] = pageError;
        }

        router.push({
            name: "root",
            query: Object.assign(optionalQuery, queryStringsObject),
            params: optionalParams,
        });
    } else if (matchingScenarioMap.destinationUrl !== undefined) {
        navigateToUrl(matchingScenarioMap.destinationUrl, optionalQuery);
    }
}

// Get navigation map depending on the scenario and the current 'page' you're on.
function getNavigationMap(scenario, currentRoute) {
    const fmgPageValue = currentRoute.query.fmgPage;
    const matchedQueryValue = routingTable(store)
        .filter(
            (item) =>
                item.fmgPageValue === fmgPageValue &&
                item.maps.filter((map) => map.scenario === scenario).length > 0
        )
        .map((m) => m.maps.filter((map) => map.scenario === scenario))[0]
        .filter((x) => x.filter === true || x.filter === undefined);

    return matchedQueryValue[0];
}

//---------------------------------------------------------- Private Functions ----------------------------------------------------------

// Navigate to an external url.
function navigateToUrl(url, optionalQuery = {}) {
    // possibly show some loading screen in the future here.
    var externalUrl = new URL(url);

    for (const queryKey in optionalQuery) {
        externalUrl.searchParams.append(queryKey, optionalQuery[queryKey]);
    }

    window.location.assign(externalUrl);
}

// Get route information by page name.
// This will no longer reach out to the Cms. There is a 1:1 relationship between page names and route names and layouts.
function GetRouteInfoFromPageName(pageName) {
    // check if pagename is a valid route/component
    if (!isExistingFmgPageName(pageName)) {
        return [];
    }

    const routeData = [
        {
            path: "/",
            name: pageName,
            component: lazyLoadComponent(pageName),
        },
    ];

    return routeData;
}

// Go to our start page on a 404.
function GoToFunnelStartOn404(next) {
    // Put item on the bus
    eventBus.addEventToBus(
        globalEvents.Categories.GLOBAL_ALERT,
        globalEvents.SubCategories.PAGE_NOT_FOUND,
        {
            isDismissible: true,
            messageCopy: "You can get a quote by starting on this page.",
            messageHeadline: "We're sorry, something went wrong.",
            type: globalEventTypes.Danger,
        }
    );

    next({
        path: "/",
        query: { fmgPage: funnelStartPageName },
    });
}

async function DisplayPageError() {
    // Put item on the bus
    eventBus.addEventToBus(
        globalEvents.Categories.GLOBAL_ALERT,
        globalEvents.SubCategories.UNKNOWN_ERROR,
        {
            isDismissible: true,
            messageCopy: "",
            messageHeadline: "We're sorry, something went wrong.",
            type: globalEventTypes.Danger,
        }
    );
    store.commit(storeMutations.UPDATE_IS_LEAD_GEN, false);
    baseMixin.methods.dispatchStoreAction(storeActions.RESET_SAVE_SESSION_PROMISE);
    const pageError = getQuerystringParameter(queryStrings.PAGE_ERROR);

    // we use the pageError querystring as a counter to how many times a user has experienced an error and been routed here.
    // once they receive more than 1 pageerrors, we'll reset their state to hopefully correct any issues they may be having.
    var navPage = fmgPageValues.VEHICLE;
    if (store.getters.requiresVerifiedRedirecting) {
        navPage = fmgPageValues.VEHICLE_DAMAGE;
    }

    if (pageError) {
        var errorCount = Number(pageError);
        if (errorCount > 1) {
            deleteFunnelCookie();
            await baseMixin.methods.dispatchStoreAction(storeActions.RESET_STATE);

            router.push({
                path: "/",
                query: { fmgPage: navPage },
            });
        } else {
            errorCount++;
            router.push({
                path: "/",
                query: { fmgPage: navPage, pageError: errorCount },
            });
        }
    } else {
        router.push({
            path: "/",
            query: { fmgPage: navPage, pageError: "1" },
        });
    }
}

function isExistingFmgPageName(pageName) {
    const names = Object.values(fmgPageValues);

    return names.some((name) => name === pageName);
}

// Checks arePagePrerequisitesValid on the component passed in.
function arePagePrerequisitesValid(component) {
    return component.default.methods.arePagePrerequisitesValid();
}

// Run SiteEntry and PageEntry triggers for experiments
async function runExperiments(nextPage) {
    if (!store.getters.applicationUser.triggeredSiteEntry) {
        await baseMixin.methods.dispatchStoreActionWithLogging(
            storeActions.RUN_EXPERIMENTS_FOR_TRIGGER,
            {
                userId: getDeviceIdValue(),
                triggerEvent: experimentTriggers.SITE_ENTRY,
                triggerValue: applicationConfig.SITE_ENTRY_TRIGGER_VALUE,
            },
            nextPage
        );
    }

    await baseMixin.methods.dispatchStoreActionWithLogging(
        storeActions.RUN_EXPERIMENTS_FOR_TRIGGER,
        {
            userId: getDeviceIdValue(),
            triggerEvent: experimentTriggers.PAGE_ENTRY,
            triggerValue: nextPage,
        },
        nextPage
    );
}

function getRedirectedStartPage() {
    if (store.getters.requiresVerifiedRedirecting) {
        return fmgPageValues.VEHICLE_DAMAGE;
    } else {
        return funnelStartPageName;
    }
}

export default router;