const fs = require("fs");
const path = require("path");
const vm = require("vm");
const assert = require("assert");

const rootDir = path.resolve(__dirname, "..", "..");

const loadRouteStateModule = () => {
    const filePath = path.join(rootDir, "lib", "routing", "routeState.js");
    let source = fs.readFileSync(filePath, "utf8");

    source = source.replace(/export const\s+/g, "const ");
    source +=
        "\nmodule.exports = { normalizeRouteStateQuery, resolveSearchResultsHref, resolveSearchBreadcrumbLabel, isDnsRoutePath, resolveCaseBreadcrumbState };\n";

    const context = {
        module: { exports: {} },
        exports: {},
        require
    };

    vm.runInNewContext(source, context, { filename: filePath });
    return context.module.exports;
};

const tests = [];
const test = (name, fn) => tests.push({ name, fn });

test("routing/routeState normalizes va/adv/ads flags and key", async () => {
    const mod = loadRouteStateModule();

    const normalized = mod.normalizeRouteStateQuery({
        va: "true",
        adv: "false",
        ads: "true",
        key: "myCases"
    });

    assert.deepStrictEqual(JSON.parse(JSON.stringify(normalized)), {
        viewAll: true,
        advanced: false,
        address: true,
        key: "myCases"
    });
});

test("routing/routeState resolves view-all href when va=true", async () => {
    const mod = loadRouteStateModule();

    const href = mod.resolveSearchResultsHref({
        query: { va: "true", key: "myCases", adv: "true" },
        hasSession: true
    });

    assert.deepStrictEqual(JSON.parse(JSON.stringify(href)), {
        pathname: "/myportal/viewall",
        query: { key: "myCases" }
    });
});

test("routing/routeState resolves advanced/address/default result hrefs", async () => {
    const mod = loadRouteStateModule();

    const advancedHref = mod.resolveSearchResultsHref({
        query: { adv: "true", q: "abc" },
        hasSession: false
    });
    const addressHref = mod.resolveSearchResultsHref({
        query: { ads: "true", q: "abc" },
        hasSession: true
    });
    const defaultHref = mod.resolveSearchResultsHref({
        query: { q: "abc" },
        hasSession: true
    });

    assert.deepStrictEqual(JSON.parse(JSON.stringify(advancedHref)), {
        pathname: "/advancedsearchresults",
        query: { adv: "true", q: "abc" }
    });
    assert.deepStrictEqual(JSON.parse(JSON.stringify(addressHref)), {
        pathname: "/myportal/addresssearchresults",
        query: { ads: "true", q: "abc" }
    });
    assert.deepStrictEqual(JSON.parse(JSON.stringify(defaultHref)), {
        pathname: "/myportal/searchresults",
        query: { q: "abc" }
    });
});

test("routing/routeState supports fallback to /myportal when no route flags", async () => {
    const mod = loadRouteStateModule();

    const href = mod.resolveSearchResultsHref({
        query: { q: "abc" },
        hasSession: false,
        fallbackToMyPortalWhenNoFlags: true
    });

    assert.deepStrictEqual(JSON.parse(JSON.stringify(href)), {
        pathname: "/myportal"
    });
});

test("routing/routeState supports DNS route override", async () => {
    const mod = loadRouteStateModule();

    const href = mod.resolveSearchResultsHref({
        query: { adv: "true", q: "abc" },
        hasSession: true,
        isDnsRoute: true
    });

    assert.deepStrictEqual(JSON.parse(JSON.stringify(href)), {
        pathname: "/myportal/dnsapplications"
    });
});

test("routing/routeState resolves breadcrumb label using key and route flags", async () => {
    const mod = loadRouteStateModule();
    const getViewAllLabel = (key) =>
        ({ myCases: "My Cases", watchedCases: "Watched Cases" })[key] || null;

    const fromViewAll = mod.resolveSearchBreadcrumbLabel({
        query: { va: "true", key: "myCases" },
        getViewAllLabel,
        advancedLabel: "Advanced",
        addressLabel: "Address",
        defaultLabel: "Search"
    });
    const fromAdvanced = mod.resolveSearchBreadcrumbLabel({
        query: { adv: "true" },
        getViewAllLabel,
        advancedLabel: "Advanced",
        addressLabel: "Address",
        defaultLabel: "Search"
    });
    const fromDefault = mod.resolveSearchBreadcrumbLabel({
        query: {},
        getViewAllLabel,
        advancedLabel: "Advanced",
        addressLabel: "Address",
        defaultLabel: "Search"
    });

    assert.strictEqual(fromViewAll, "My Cases");
    assert.strictEqual(fromAdvanced, "Advanced");
    assert.strictEqual(fromDefault, "Search");
});

test("routing/routeState identifies dns and myportal dns route prefixes", async () => {
    const mod = loadRouteStateModule();

    assert.strictEqual(mod.isDnsRoutePath("/dns"), true);
    assert.strictEqual(mod.isDnsRoutePath("/dns/development"), true);
    assert.strictEqual(mod.isDnsRoutePath("/myportal/dns"), true);
    assert.strictEqual(mod.isDnsRoutePath("/myportal/dns/applications"), true);
    assert.strictEqual(mod.isDnsRoutePath("/case/123"), false);
});

test("routing/routeState resolves bundled case breadcrumb state", async () => {
    const mod = loadRouteStateModule();
    const getViewAllLabel = (key) => ({ myCases: "My Cases" })[key] || null;

    const state = mod.resolveCaseBreadcrumbState({
        query: { va: "true", key: "myCases" },
        hasSession: true,
        getViewAllLabel,
        advancedLabel: "Advanced",
        addressLabel: "Address",
        defaultLabel: "Search"
    });

    assert.deepStrictEqual(JSON.parse(JSON.stringify(state)), {
        breadcrumbHref: {
            pathname: "/myportal/viewall",
            query: { key: "myCases" }
        },
        caseResultsHref: {
            pathname: "/myportal/searchresults",
            query: { va: "true", key: "myCases" }
        },
        breadcrumbLabel: "My Cases"
    });
});

const run = async () => {
    let passed = 0;

    for (const currentTest of tests) {
        await currentTest.fn();
        passed += 1;
    }

    console.log(
        `Phase 22 route-state helper tests passed (${passed}/${tests.length}).`
    );
};

module.exports = run;

if (require.main === module) {
    run().catch((error) => {
        console.error(error);
        process.exit(1);
    });
}