// Boot the REAL popup entry point over a stored record, exactly as the browser
// does: storage already holds the record, the page loads, DOMContentLoaded
// fires.
//
// Written for https://git.eeqj.de/sneak/AutistMask/issues/311 inside
// tests/stateRecovery.test.js and lifted here unchanged in substance when
// https://git.eeqj.de/sneak/AutistMask/issues/362 needed the same boot for a
// second field. Assertions about a corrupt stored profile have to be made
// through the entry point rather than against a view module: a screen that
// renders perfectly when something calls it, and that nothing calls, IS the
// defect.
//
// The DOM stub is built FROM src/popup/index.html — every id in the markup,
// with the classes the markup gives it — so "which views are visible" is
// answered against the real element set, and a screen with no markup behind it
// cannot pass.

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

const { makeStorageStub } = require("./storageStub");

const POPUP_HTML = fs.readFileSync(
    path.join(__dirname, "..", "..", "src", "popup", "index.html"),
    "utf8",
);

// Fixed addresses, never used for anything but these tests.
const ADDRESS = "0x66133E8ea0f5D1d612D2502a968757D1048c214a";
const TOKEN_ADDRESS = "0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";

// A profile in the shape every install in the field has it: complete, valid,
// and carrying no version field, because no build ever wrote one. The starting
// point for "and now corrupt exactly one field of it".
function unversionedValidProfile(extra) {
    return {
        hasWallet: true,
        wallets: [
            {
                type: "hd",
                name: "Wallet 1",
                xpub: "xpub-wallet-1",
                encryptedSecret: "encrypted-secret-1",
                nextIndex: 1,
                addresses: [
                    { address: ADDRESS, balance: "1.5", tokenBalances: [] },
                ],
            },
        ],
        activeAddress: ADDRESS,
        networkId: "mainnet",
        rpcUrl: "https://ethereum-rpc.publicnode.com",
        blockscoutUrl: "https://eth.blockscout.com/api/v2",
        allowedSites: { [ADDRESS]: ["dapp.example"] },
        deniedSites: {},
        trackedTokens: [],
        theme: "system",
        ...(extra || {}),
    };
}

function makeElement(id, className) {
    const classes = new Set(
        (className || "").split(/\s+/).filter((name) => name !== ""),
    );
    const el = {
        id,
        tagName: "DIV",
        textContent: "",
        value: "",
        innerHTML: "",
        href: "",
        download: "",
        disabled: false,
        style: {},
        dataset: {},
        listeners: {},
        clicked: 0,
        classList: {
            add: (...names) => names.forEach((n) => classes.add(n)),
            remove: (...names) => names.forEach((n) => classes.delete(n)),
            contains: (n) => classes.has(n),
            toggle: (n, force) => {
                const on = force === undefined ? !classes.has(n) : force;
                if (on) classes.add(n);
                else classes.delete(n);
                return on;
            },
        },
        addEventListener: (name, fn) => {
            el.listeners[name] = el.listeners[name] || [];
            el.listeners[name].push(fn);
        },
        removeEventListener: () => {},
        appendChild: () => {},
        remove: () => {},
        focus: () => {},
        select: () => {},
        setAttribute: (name, value) => {
            el[name] = value;
        },
        querySelector: () => null,
        querySelectorAll: () => [],
        // The Receive view draws its QR onto #receive-qr through the qrcode
        // package, which calls getContext("2d") and then createImageData/
        // putImageData on the result. Without this the render throws from
        // inside a promise the view does not await, which takes the whole node
        // process down rather than failing a test — so a suite that boots onto
        // Receive could not report anything.
        getContext: () => ({
            createImageData: (w, h) => ({
                width: w,
                height: h,
                data: new Uint8ClampedArray(w * h * 4),
            }),
            putImageData: () => {},
            clearRect: () => {},
        }),
        click: () => {
            el.clicked += 1;
        },
    };
    // src/ reaches parentElement only to hide or unhide the wrapper a field
    // sits in (txStatus.js renderSuccess(), transactionDetail.js render()).
    // The stub is flat — it is built from the ids in the markup, not from its
    // tree — so each element gets a wrapper of its own, made on demand so this
    // does not recurse. It is never registered by id, so nothing can mistake
    // it for a view. Without it, success-tx and transaction throw on the first
    // line that touches a wrapper and cannot be booted onto at all.
    let parent = null;
    Object.defineProperty(el, "parentElement", {
        get() {
            if (!parent) parent = makeElement(id + "-parent", "");
            return parent;
        },
    });
    return el;
}

// Every id in the markup, with the classes the markup gives it. A view the
// popup is supposed to reveal has to exist here, which means it has to exist
// in src/popup/index.html.
function idsFromHtml(html) {
    const out = new Map();
    const tags = html.match(/<[a-zA-Z][^>]*>/g) || [];
    for (const tag of tags) {
        const id = /\bid="([^"]+)"/.exec(tag);
        if (!id) continue;
        const cls = /\bclass="([^"]*)"/.exec(tag);
        out.set(id[1], cls ? cls[1] : "");
    }
    return out;
}

// Ids the popup creates at runtime rather than authoring in the markup, and
// that must therefore read as ABSENT until something creates them. Answering
// with a fresh element instead would make "is the banner up?" always true.
const RUNTIME_IDS = new Set(["debug-banner", "save-failure-banner"]);

function makeDocument(html) {
    const authored = idsFromHtml(html);
    const els = new Map();
    for (const [id, className] of authored) {
        els.set(id, makeElement(id, className));
    }
    const created = [];
    const prepended = [];
    const doc = {
        listeners: {},
        getElementById(id) {
            if (RUNTIME_IDS.has(id) && !els.has(id)) return null;
            if (!els.has(id)) els.set(id, makeElement(id, ""));
            return els.get(id);
        },
        createElement(tag) {
            const el = makeElement("created-" + tag, "");
            el.tagName = String(tag).toUpperCase();
            created.push(el);
            return el;
        },
        addEventListener(name, fn) {
            doc.listeners[name] = doc.listeners[name] || [];
            doc.listeners[name].push(fn);
        },
        querySelectorAll: () => [],
        documentElement: makeElement("html", ""),
        body: {
            // Recorded, and registered under its id: a banner the popup
            // prepends is on the page from then on, and a test asking for it
            // by id has to find it.
            prepend: (el) => {
                prepended.push(el);
                if (el && el.id) els.set(el.id, el);
            },
            appendChild: () => {},
            removeChild: () => {},
        },
        elements: els,
        authoredIds: authored,
        created,
        prepended,
    };
    return doc;
}

async function settle() {
    for (let i = 0; i < 50; i++) await Promise.resolve();
}

/**
 * Boot the popup over `stored`.
 *
 * @param {*} stored the record storage holds, or undefined for a first run.
 * @param {object} [options]
 * @param {object} [options.storage] a storage stub from makeStorageStub(), for
 *     a test that needs to make writes fail or to watch the round trips.
 * @returns {Promise<object>} handles onto the booted page.
 */
async function bootPopup(stored, options) {
    jest.resetModules();

    // The three modules that reach the network. None is on the path under
    // test; all would make the suite hit the internet.
    jest.doMock("../../src/shared/prices", () => ({
        prices: {},
        refreshPrices: jest.fn(async () => {}),
        clearPrices: jest.fn(),
        getPrice: () => null,
        formatUsd: () => "",
        formatAddressTotal: () => "",
        getAddressValue: () => ({ usd: null, partial: false }),
        getWalletValue: () => ({ usd: null, partial: false }),
        getTotalValue: () => ({ usd: null, partial: false }),
    }));
    jest.doMock("../../src/shared/balances", () => ({
        fetchTokenBalances: jest.fn(async () => []),
        refreshBalances: jest.fn(async () => {}),
        lookupTokenInfo: jest.fn(async () => null),
        getProvider: () => ({}),
        scanForAddresses: jest.fn(async () => []),
    }));
    jest.doMock("../../src/shared/transactions", () => ({
        fetchRecentTransactions: jest.fn(async () => []),
        filterTransactions: () => [],
    }));

    const storage =
        (options && options.storage) ||
        makeStorageStub(stored === undefined ? {} : { autistmask: stored });
    const document = makeDocument(POPUP_HTML);
    const reloads = [];

    globalThis.chrome = {
        storage: { local: storage.local },
        runtime: {
            sendMessage: jest.fn(async () => ({})),
            getURL: (p) => "chrome-extension://autistmask/" + p,
            onMessage: { addListener: () => {} },
        },
    };
    globalThis.document = document;
    globalThis.window = {
        location: {
            search: "",
            href: "chrome-extension://autistmask/src/popup/index.html",
            reload: () => reloads.push(Date.now()),
        },
        matchMedia: () => ({
            matches: false,
            addEventListener: () => {},
            removeEventListener: () => {},
        }),
        addEventListener: () => {},
    };
    // The 10s refresh loop init() starts would outlive the test.
    const realSetInterval = globalThis.setInterval;
    globalThis.setInterval = () => 0;

    require("../../src/popup/index");

    const booted = [];
    for (const fn of document.listeners.DOMContentLoaded || []) {
        booted.push(fn());
    }

    // What the browser console would have shown. A throw out of init() is the
    // blank popup issue 311 is about, so it is captured rather than thrown:
    // the assertion that matters is what ended up on screen.
    const pageErrors = [];
    for (const p of booted) {
        try {
            await p;
        } catch (e) {
            pageErrors.push(String((e && e.message) || e));
        }
    }
    await settle();

    globalThis.setInterval = realSetInterval;

    return {
        storage,
        document,
        pageErrors,
        reloaded: () => reloads.length,
        node: (id) => document.getElementById(id),
        text: (id) => {
            const el = document.getElementById(id);
            return el ? el.textContent : null;
        },
        value: (id) => document.getElementById(id).value,
        hidden: (id) =>
            document.getElementById(id).classList.contains("hidden"),
        click: async (id) => {
            const el = document.getElementById(id);
            const fns = el.listeners.click || [];
            for (const fn of fns) await fn();
            await settle();
        },
        settle,
        // The view ids whose section is not hidden, as the audit measured them.
        visibleViews: () => {
            const out = [];
            for (const [id, el] of document.elements) {
                if (!id.startsWith("view-")) continue;
                if (!el.classList.contains("hidden")) out.push(id.slice(5));
            }
            return out;
        },
    };
}

function cleanupPopup() {
    delete globalThis.chrome;
    delete globalThis.document;
    delete globalThis.window;
}

module.exports = {
    bootPopup,
    cleanupPopup,
    settle,
    unversionedValidProfile,
    ADDRESS,
    TOKEN_ADDRESS,
    POPUP_HTML,
};