// Lifecycle tests for the post-broadcast transaction status views
// (src/popup/views/txStatus.js).
//
// The bug these pin down: the receipt poll rendered both outcomes on the tick
// that crossed the 60-second deadline, so a confirmed transaction was replaced
// by "not confirmed within 60 seconds" — the user is told their transaction
// failed when it succeeded. The same shape applies to any callback that
// outlives its wait: a receipt lookup still in flight when the view is left
// must not render over whatever replaced it.
//
// Fake timers make the race deterministic: the receipt promise is already
// resolved when the deadline tick runs, so in the unfixed code showSuccess()
// is always followed by showError() on that tick.
//
// No network: getProvider is mocked at the module boundary and there is no
// jsdom in this repo, so the handful of DOM calls these views make are served
// by the stub below.

jest.mock("../src/shared/log", () => ({
    log: {
        debugf: () => {},
        infof: () => {},
        warnf: () => {},
        errorf: () => {},
    },
    debugFetch: jest.fn(),
    setRuntimeDebug: () => {},
    isDebug: () => false,
}));

const mockReceiptLookup = jest.fn();
jest.mock("../src/shared/balances", () => ({
    getProvider: () => ({ getTransactionReceipt: mockReceiptLookup }),
    refreshBalances: jest.fn(),
}));

global.fetch = jest.fn(() => {
    throw new Error("tests must not perform network requests");
});

// ---------------------------------------------------------------------------
// Minimal DOM. Every element is created on demand and remembered by id, so a
// test can read back what a view wrote into it.
// ---------------------------------------------------------------------------

const elements = new Map();

function makeElement(id) {
    const classes = new Set(["view", "hidden"]);
    const el = {
        id,
        textContent: "",
        innerHTML: "",
        style: {},
        classList: {
            add: (c) => classes.add(c),
            remove: (c) => classes.delete(c),
            contains: (c) => classes.has(c),
            toggle: (c, on) => (on ? classes.add(c) : classes.delete(c)),
        },
        addEventListener: () => {},
        querySelectorAll: () => [],
        remove: () => {},
        prepend: () => {},
    };
    // Views reach for .parentElement to hide whole sections.
    Object.defineProperty(el, "parentElement", {
        get: () => getElement(id + "-parent"),
    });
    return el;
}

function getElement(id) {
    if (!elements.has(id)) elements.set(id, makeElement(id));
    return elements.get(id);
}

global.document = {
    getElementById: (id) => getElement(id),
    // escapeHtml() builds a detached div; textContent in, escaped HTML out.
    createElement: () => {
        const el = { innerHTML: "" };
        Object.defineProperty(el, "textContent", {
            set(v) {
                el.innerHTML = String(v)
                    .replace(/&/g, "&")
                    .replace(/</g, "&lt;")
                    .replace(/>/g, "&gt;");
            },
        });
        return el;
    },
    body: { prepend: () => {} },
    addEventListener: () => {},
};

global.window = { location: { search: "" } };

const stored = {};
global.chrome = {
    storage: {
        local: {
            set: (obj) => {
                Object.assign(stored, obj);
                return Promise.resolve();
            },
            get: () => Promise.resolve(stored),
        },
    },
};

const txStatus = require("../src/popup/views/txStatus");
const { state } = require("../src/shared/state");
const { RESTORABLE_VIEWS } = require("../src/popup/restorableViews");

const TX_HASH =
    "0x85215772ed26ea8b39c2b3b18779030487efbe0b5fd7e882592b2f62b837be84";
const RECIPIENT = "0x66133E8ea0f5D1d612D2502a968757D1048c214a";
const TX_INFO = {
    to: RECIPIENT,
    amount: "0.0050",
    token: "ETH",
    tokenSymbol: null,
};

// True when a view element is not hidden.
function visible(view) {
    return !getElement("view-" + view).classList.contains("hidden");
}

function waitStatusText() {
    return getElement("wait-tx-status").textContent;
}

beforeEach(() => {
    jest.useFakeTimers();
    jest.setSystemTime(new Date("2026-08-11T12:00:00Z"));
    elements.clear();
    mockReceiptLookup.mockReset();
    state.wallets = [];
    state.viewData = {};
    state.viewStack = [];
    state.currentView = null;
    txStatus.init({ doRefreshAndRender: jest.fn() });
});

afterEach(() => {
    txStatus.endWait();
    jest.useRealTimers();
});

describe("WaitTx receipt/timeout race", () => {
    test("a receipt arriving on the deadline tick leaves the user on SuccessTx", async () => {
        // No receipt for the first five polls; the sixth — the tick at
        // t=60s, which is also the timeout deadline — returns one.
        mockReceiptLookup
            .mockResolvedValueOnce(null)
            .mockResolvedValueOnce(null)
            .mockResolvedValueOnce(null)
            .mockResolvedValueOnce(null)
            .mockResolvedValueOnce(null)
            .mockResolvedValue({ blockNumber: 21000000 });

        txStatus.showWait(TX_INFO, TX_HASH);
        expect(visible("wait-tx")).toBe(true);

        await jest.advanceTimersByTimeAsync(60000);

        expect(visible("success-tx")).toBe(true);
        expect(visible("error-tx")).toBe(false);
        expect(state.currentView).toBe("success-tx");
        expect(state.viewData.blockNumber).toBe(21000000);
        expect(state.viewData.message).toBeUndefined();

        // And nothing is left running to undo it.
        expect(jest.getTimerCount()).toBe(0);
        await jest.advanceTimersByTimeAsync(300000);
        expect(state.currentView).toBe("success-tx");
        expect(mockReceiptLookup).toHaveBeenCalledTimes(6);
    });

    test("a genuine timeout still shows ErrorTx with the hash", async () => {
        mockReceiptLookup.mockResolvedValue(null);

        txStatus.showWait(TX_INFO, TX_HASH);
        await jest.advanceTimersByTimeAsync(60000);

        expect(visible("error-tx")).toBe(true);
        expect(state.currentView).toBe("error-tx");
        expect(state.viewData.message).toMatch(
            /not confirmed within 60 seconds/,
        );
        expect(state.viewData.hash).toBe(TX_HASH);
        // The hash section carries the hash and the etherscan link.
        expect(getElement("error-tx-hash").innerHTML).toContain(TX_HASH);
        expect(getElement("error-tx-hash").innerHTML).toContain(
            "/tx/" + TX_HASH,
        );
        expect(jest.getTimerCount()).toBe(0);
    });

    test("a receipt still in flight when the view is left does not render over it", async () => {
        let resolveReceipt;
        mockReceiptLookup.mockReturnValue(
            new Promise((r) => {
                resolveReceipt = r;
            }),
        );

        txStatus.showWait(TX_INFO, TX_HASH);
        await jest.advanceTimersByTimeAsync(10000);
        expect(mockReceiptLookup).toHaveBeenCalledTimes(1);

        // User leaves the wait (popup navigation / teardown) while the
        // lookup is outstanding, then the lookup finally answers.
        txStatus.endWait();
        state.currentView = "main";
        resolveReceipt({ blockNumber: 21000000 });
        await Promise.resolve();
        await Promise.resolve();

        expect(state.currentView).toBe("main");
        expect(visible("success-tx")).toBe(false);
    });

    test("no timer survives the view being left", async () => {
        mockReceiptLookup.mockResolvedValue(null);

        txStatus.showWait(TX_INFO, TX_HASH);
        expect(jest.getTimerCount()).toBeGreaterThan(0);

        txStatus.endWait();
        expect(jest.getTimerCount()).toBe(0);

        await jest.advanceTimersByTimeAsync(120000);
        expect(mockReceiptLookup).not.toHaveBeenCalled();
    });
});

describe("WaitTx persistence across popup close", () => {
    test("restoreWait resumes the poll with the deadline running from broadcast", async () => {
        mockReceiptLookup.mockResolvedValue(null);

        txStatus.showWait(TX_INFO, TX_HASH);
        expect(state.viewData.pendingWait.hash).toBe(TX_HASH);
        const persisted = JSON.parse(JSON.stringify(state.viewData));

        // Popup closes: timers die with the page.
        txStatus.endWait();

        // 45 seconds pass with the popup shut, then it is reopened.
        jest.advanceTimersByTime(45000);
        state.viewData = persisted;
        expect(txStatus.restoreWait()).toBe(true);

        expect(visible("wait-tx")).toBe(true);
        // Elapsed is counted from the broadcast, not from the reopen.
        expect(waitStatusText()).toBe("Waiting for confirmation... 45s");
        // The immediate poll on resume has already run.
        await Promise.resolve();
        expect(mockReceiptLookup).toHaveBeenCalledTimes(1);

        // The deadline is 15 seconds away, not 60.
        await jest.advanceTimersByTimeAsync(20000);
        expect(state.currentView).toBe("error-tx");
    });

    test("a rejected lookup on the resume poll keeps waiting instead of reporting failure", async () => {
        // A wait resumed after the deadline has already passed: the first
        // poll is immediate and past 60s, so a thrown lookup must not be
        // read as "no receipt". It means "no answer this tick" — keep
        // polling, because the transaction may well have confirmed.
        mockReceiptLookup.mockResolvedValue(null);
        txStatus.showWait(TX_INFO, TX_HASH);
        const persisted = JSON.parse(JSON.stringify(state.viewData));
        txStatus.endWait();

        // Ten minutes with the popup shut, then it is reopened and the
        // first receipt lookup fails transiently.
        jest.advanceTimersByTime(600000);
        mockReceiptLookup.mockReset();
        mockReceiptLookup
            .mockRejectedValueOnce(new Error("rpc unavailable"))
            .mockResolvedValue({ blockNumber: 21000000 });

        state.viewData = persisted;
        expect(txStatus.restoreWait()).toBe(true);
        await jest.advanceTimersByTimeAsync(0);

        // The wait is still alive: no timeout was declared off one error.
        expect(visible("wait-tx")).toBe(true);
        expect(visible("error-tx")).toBe(false);
        expect(state.currentView).toBe("wait-tx");
        expect(jest.getTimerCount()).toBeGreaterThan(0);

        // And the next tick answers, so the confirmed transaction is
        // reported as confirmed.
        await jest.advanceTimersByTimeAsync(10000);
        expect(state.currentView).toBe("success-tx");
        expect(state.viewData.blockNumber).toBe(21000000);
    });

    test("a lookup returning null past the deadline still times out", async () => {
        // The counterpart to the test above: the deadline must still fire
        // when the lookup actually answers "no receipt".
        mockReceiptLookup.mockResolvedValue(null);
        txStatus.showWait(TX_INFO, TX_HASH);
        const persisted = JSON.parse(JSON.stringify(state.viewData));
        txStatus.endWait();

        jest.advanceTimersByTime(600000);
        state.viewData = persisted;
        expect(txStatus.restoreWait()).toBe(true);
        await jest.advanceTimersByTimeAsync(0);

        expect(state.currentView).toBe("error-tx");
        expect(state.viewData.message).toMatch(
            /not confirmed within 60 seconds/,
        );
    });

    test("restoreWait reports nothing to resume when no wait is persisted", () => {
        state.viewData = {};
        expect(txStatus.restoreWait()).toBe(false);
        expect(jest.getTimerCount()).toBe(0);
    });

    test("restoreWait rejects a persisted wait missing its txInfo or broadcast time", () => {
        for (const bad of [
            { hash: TX_HASH, broadcastTime: Date.now() },
            { hash: TX_HASH, txInfo: TX_INFO },
            { hash: TX_HASH, txInfo: TX_INFO, broadcastTime: "soon" },
            { hash: TX_HASH, txInfo: TX_INFO, broadcastTime: NaN },
            { hash: TX_HASH, txInfo: "nope", broadcastTime: Date.now() },
            // An object that merely lacks a field startWait() dereferences
            // is the shape that actually escaped: txInfo.to reaches
            // addressTitle(), which calls address.toLowerCase(). typeof []
            // is "object", so an array passes an object check.
            { hash: TX_HASH, txInfo: {}, broadcastTime: Date.now() },
            { hash: TX_HASH, txInfo: [], broadcastTime: Date.now() },
            { hash: TX_HASH, txInfo: { to: 42 }, broadcastTime: Date.now() },
            // Otherwise complete but for a non-string `to`: only the `to`
            // check rejects this one, and without it addressTitle() throws
            // out of restoreView().
            {
                hash: TX_HASH,
                txInfo: { to: 42, amount: "0.0050" },
                broadcastTime: Date.now(),
            },
            // Otherwise complete but an array: only Array.isArray() rejects
            // it, since typeof [] is "object" and the fields are present.
            {
                hash: TX_HASH,
                txInfo: Object.assign([], { to: RECIPIENT, amount: "0.0050" }),
                broadcastTime: Date.now(),
            },
            {
                hash: TX_HASH,
                txInfo: { to: RECIPIENT },
                broadcastTime: Date.now(),
            },
        ]) {
            state.viewData = { pendingWait: bad };
            expect(txStatus.restoreWait()).toBe(false);
            expect(jest.getTimerCount()).toBe(0);
        }
    });

    test("restoreWait resumes a wait whose recipient is the empty string", () => {
        // The shape a contract-deployment approval persists: approval.js
        // writes `to: toAddr || ""`, and showWait() renders it without
        // complaint. Validation must not be stricter than the live path, or
        // that wait is silently abandoned on every popup open.
        mockReceiptLookup.mockResolvedValue(null);
        state.viewData = {
            pendingWait: {
                hash: TX_HASH,
                txInfo: { ...TX_INFO, to: "" },
                broadcastTime: Date.now(),
            },
        };
        expect(txStatus.restoreWait()).toBe(true);
        expect(visible("wait-tx")).toBe(true);
    });
});

describe("WaitTx against an RPC that never answers", () => {
    test("a permanently failing lookup ends the wait instead of polling forever", async () => {
        mockReceiptLookup.mockRejectedValue(new Error("rpc unavailable"));

        txStatus.showWait(TX_INFO, TX_HASH);

        // Six consecutive failures is 60 seconds at the 10s cadence — the
        // same patience as the confirmation deadline.
        await jest.advanceTimersByTimeAsync(60000);

        expect(state.currentView).toBe("error-tx");
        expect(visible("wait-tx")).toBe(false);
        // The user is told what actually happened: the lookup failed. It is
        // not the same fact as "the transaction did not confirm".
        expect(state.viewData.message).toMatch(/could not be reached/i);
        expect(state.viewData.message).not.toMatch(/not confirmed within/);
        expect(state.viewData.hash).toBe(TX_HASH);

        // Nothing is left running, and nothing is left to resume onto.
        expect(jest.getTimerCount()).toBe(0);
        expect(state.viewData.pendingWait).toBeUndefined();

        const calls = mockReceiptLookup.mock.calls.length;
        await jest.advanceTimersByTimeAsync(3600000);
        expect(mockReceiptLookup).toHaveBeenCalledTimes(calls);
        expect(state.currentView).toBe("error-tx");
    });

    test("an answered lookup clears the failure count, so the bound is on consecutive failures", async () => {
        // The bound counts failures in a row, not failures in total: a
        // flaky RPC that keeps answering in between must not accumulate its
        // way to a false "network unreachable".
        //
        // Polls 1-5 (t=10s..50s) alternate reject / null, so three fail and
        // the last answer resets the count at poll 4. From poll 6 on every
        // lookup fails. Six in a row is then poll 10, at t=100s. A counter
        // that never reset would have reached six at poll 8, t=80s, so the
        // window between those two is what this test occupies.
        mockReceiptLookup.mockImplementation(() => {
            const n = mockReceiptLookup.mock.calls.length;
            if (n <= 5 && n % 2 === 0) return Promise.resolve(null);
            return Promise.reject(new Error("flaky"));
        });

        txStatus.showWait(TX_INFO, TX_HASH);

        // t=90s: eight failures in total, five of them in a row. A
        // cumulative counter has long since fired; a consecutive one has not.
        await jest.advanceTimersByTimeAsync(90000);
        expect(state.currentView).toBe("wait-tx");
        expect(visible("wait-tx")).toBe(true);
        expect(jest.getTimerCount()).toBeGreaterThan(0);

        // t=100s: the sixth in a row.
        await jest.advanceTimersByTimeAsync(10000);
        expect(state.currentView).toBe("error-tx");
        expect(state.viewData.message).toMatch(/could not be reached/i);
        // No lookup ever answered "no receipt" past the deadline, so this
        // is not the timeout and must not be reported as one.
        expect(state.viewData.message).not.toMatch(/not confirmed within/);
        expect(jest.getTimerCount()).toBe(0);
    });

    test("a resumed wait against a dead RPC also terminates", async () => {
        // The reopen path is the one that made this unbounded: the wait is
        // persisted, so without a bound every popup open resumes it forever.
        mockReceiptLookup.mockResolvedValue(null);
        txStatus.showWait(TX_INFO, TX_HASH);
        const persisted = JSON.parse(JSON.stringify(state.viewData));
        txStatus.endWait();

        jest.advanceTimersByTime(3600000);
        mockReceiptLookup.mockReset();
        mockReceiptLookup.mockRejectedValue(new Error("rpc unavailable"));

        state.viewData = persisted;
        expect(txStatus.restoreWait()).toBe(true);
        await jest.advanceTimersByTimeAsync(60000);

        expect(state.currentView).toBe("error-tx");
        expect(state.viewData.message).toMatch(/could not be reached/i);
        expect(jest.getTimerCount()).toBe(0);
        expect(state.viewData.pendingWait).toBeUndefined();
    });
});

describe("wait-tx is a view the popup may reopen onto", () => {
    // The resume feature is wired through RESTORABLE_VIEWS: restoreView()
    // refuses any view not in the set, so dropping "wait-tx" from it kills
    // the resume silently — the tests above call restoreWait() directly and
    // would all still pass. This pins the membership. Mirrors the exclusion
    // assertions in tests/showPhrase.test.js.
    test("wait-tx is restorable", () => {
        expect(RESTORABLE_VIEWS.has("wait-tx")).toBe(true);
    });
});