// After "Add" on AddToken, AddressDetail lists the new token, and its line reads
// `quantity unknown`, not 0.0000, until a balance refresh that asked the
// explorer about the token has returned for every address, the popup closing
// and opening again meanwhile included; so does a token added on
// SettingsAddToken, wherever it is listed. A refresh that returns draws the
// balances on AddressDetail or AddressToken again, so the fetched balance shows
// without the screen being reopened
// (https://git.eeqj.de/sneak/AutistMask/issues/516). Driven through the real
// popup over a stored profile on Ethereum Mainnet, with "Show tracked tokens
// with zero balance" on, as it is by default.

const {
    bootPopup,
    cleanupPopup,
    unversionedValidProfile,
} = require("./support/popupBoot");

// Tracked by nobody until a test adds it.
const NEW_TOKEN = "0xBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB";

// The explorer's row for a holding of a million NEW_TOKEN, in the shape
// fetchTokenBalances() stores it.
const MILLION = {
    address: NEW_TOKEN,
    name: "New Token",
    symbol: "NEW",
    decimals: 18,
    balance: "1000000.0",
    holders: 3,
};

afterEach(() => {
    cleanupPopup();
});

// The popup reopened onto AddressDetail for the one address.
function bootOnAddress() {
    return bootPopup(
        unversionedValidProfile({
            currentView: "address",
            selectedWallet: 0,
            selectedAddress: 0,
        }),
    );
}

// Holds the next balance refresh open. The returned function lets it finish
// with the address's ETH balance at 2 and `tokenBalances` as the explorer's
// rows for it, or with no token balances at all when given null: an explorer
// that did not answer, which the real refreshBalances() leaves unwritten.
function holdNextRefresh(page) {
    const { refreshBalances } = require("../src/shared/balances");
    let release;
    refreshBalances.mockImplementationOnce(async (wallets) => {
        const tokenBalances = await new Promise((resolve) => {
            release = resolve;
        });
        wallets[0].addresses[0].balance = "2.0";
        if (tokenBalances !== null) {
            wallets[0].addresses[0].tokenBalances = tokenBalances;
        }
    });
    return async (tokenBalances) => {
        release(tokenBalances);
        await page.settle();
    };
}

// "+ Token", NEW_TOKEN typed in, and "Add", with the contract lookup
// answering at once.
async function addNewToken(page) {
    const { lookupTokenInfo } = require("../src/shared/balances");
    lookupTokenInfo.mockResolvedValueOnce({
        symbol: "NEW",
        decimals: 18,
        name: "New Token",
    });
    await page.click("btn-add-token");
    page.node("add-token-address").value = NEW_TOKEN;
    await page.click("btn-add-token-confirm");
}

// NEW_TOKEN's row in the balance list in element `id`, AddressDetail's unless
// another is named, as markup.
function newTokenRow(page, id = "address-balances") {
    return page
        .node(id)
        .innerHTML.split("<div ")
        .find((row) =>
            row.includes('data-token="' + NEW_TOKEN.toLowerCase() + '"'),
        );
}

// AddressDetail for the one address opened from Home, as its `[info]` button
// does.
async function openAddress(page) {
    const { state } = require("../src/shared/state");
    state.selectedWallet = 0;
    state.selectedAddress = 0;
    require("../src/popup/views/helpers").pushCurrentView();
    require("../src/popup/views/addressDetail").show();
    await page.settle();
}

// AddressToken for `token` opened from AddressDetail, as tapping the token's
// row there does.
async function openToken(page, token) {
    const { state } = require("../src/shared/state");
    state.selectedToken = token;
    require("../src/popup/views/helpers").pushCurrentView();
    require("../src/popup/views/addressToken").show();
    await page.settle();
}

test("until the refresh Add started returns, the new token's line reads quantity unknown", async () => {
    const page = await bootOnAddress();
    expect(page.pageErrors).toEqual([]);
    const finish = holdNextRefresh(page);

    await addNewToken(page);

    expect(page.visibleViews()).toEqual(["address"]);
    const row = newTokenRow(page);
    expect(row).toContain("quantity unknown");
    expect(row).not.toContain("0.0000");
    await finish([MILLION]);
});

test("once that refresh returns, AddressDetail shows the fetched balance without being reopened", async () => {
    const page = await bootOnAddress();
    const finish = holdNextRefresh(page);
    await addNewToken(page);
    // Stands for the transactions on the screen, which only show() replaces.
    page.node("tx-list").innerHTML = "transactions on the screen";

    await finish([MILLION]);

    expect(page.visibleViews()).toEqual(["address"]);
    expect(newTokenRow(page)).toContain("1000000.0000");
    // Only the balances are drawn again, not the transaction list.
    expect(page.node("tx-list").innerHTML).toBe("transactions on the screen");
});

test("a refresh already running when the token is added does not count as fetching it", async () => {
    const page = await bootOnAddress();
    const finishRunning = holdNextRefresh(page);
    const ticking = page.tick();
    await page.settle();

    await addNewToken(page);
    await finishRunning([]);
    await ticking;

    expect(newTokenRow(page)).toContain("quantity unknown");

    // The next one asks the explorer about the token, which lists no holding
    // of it: a fetched zero.
    const finishNext = holdNextRefresh(page);
    const next = page.tick();
    await page.settle();
    await finishNext([]);
    await next;

    expect(newTokenRow(page)).toContain("0.0000");
});

test("closed and opened again before any refresh has fetched it, the new token's line still reads quantity unknown", async () => {
    const closed = await bootOnAddress();
    holdNextRefresh(closed);
    await addNewToken(closed);
    cleanupPopup();

    // The refresh this boot starts gets no token balances back: the boot's
    // stub of refreshBalances() writes none.
    const page = await bootPopup(undefined, { storage: closed.storage });
    expect(page.visibleViews()).toEqual(["address"]);
    const row = newTokenRow(page);
    expect(row).toContain("quantity unknown");
    expect(row).not.toContain("0.0000");

    const finish = holdNextRefresh(page);
    const ticking = page.tick();
    await page.settle();
    await finish([MILLION]);
    await ticking;

    expect(newTokenRow(page)).toContain("1000000.0000");
});

test("a refresh in which the explorer did not answer leaves the new token's line quantity unknown", async () => {
    const page = await bootOnAddress();
    const finish = holdNextRefresh(page);
    await addNewToken(page);

    await finish(null);

    // Drawn again: the ETH balance it fetched is shown.
    expect(page.node("address-balances").innerHTML).toContain("2.0000");
    expect(newTokenRow(page)).toContain("quantity unknown");
});

test("AddressToken for the new token reads quantity unknown until the refresh returns, then the fetched balance", async () => {
    const page = await bootOnAddress();
    const finish = holdNextRefresh(page);
    await addNewToken(page);

    await openToken(page, NEW_TOKEN.toLowerCase());

    expect(page.visibleViews()).toEqual(["address-token"]);
    const before = page.node("address-token-balance").innerHTML;
    expect(before).toContain("quantity unknown");
    expect(before).not.toContain("0.0000");

    await finish([MILLION]);

    expect(page.node("address-token-balance").innerHTML).toContain(
        "1000000.0000",
    );
});

test("a token added by contract address on SettingsAddToken reads quantity unknown until the refresh returns", async () => {
    const page = await bootPopup(unversionedValidProfile());
    expect(page.visibleViews()).toEqual(["main"]);
    const finish = holdNextRefresh(page);
    const { lookupTokenInfo } = require("../src/shared/balances");
    lookupTokenInfo.mockResolvedValueOnce({
        symbol: "NEW",
        decimals: 18,
        name: "New Token",
    });

    await page.click("btn-settings");
    await page.click("btn-settings-add-token");
    page.node("settings-addtoken-address").value = NEW_TOKEN;
    await page.click("btn-settings-addtoken-manual");
    await page.click("btn-settings-addtoken-back");
    await page.click("btn-settings-back");
    expect(page.visibleViews()).toEqual(["main"]);
    const onHome = newTokenRow(page, "wallet-list");
    expect(onHome).toContain("quantity unknown");
    expect(onHome).not.toContain("0.0000");

    await openAddress(page);
    const onAddress = newTokenRow(page);
    expect(onAddress).toContain("quantity unknown");
    expect(onAddress).not.toContain("0.0000");

    await finish([MILLION]);

    expect(newTokenRow(page)).toContain("1000000.0000");
});

test("a refresh that returns while AddressToken is up draws its balance again", async () => {
    const page = await bootPopup(
        unversionedValidProfile({
            currentView: "address-token",
            viewStack: ["main", "address"],
            selectedWallet: 0,
            selectedAddress: 0,
            selectedToken: "ETH",
        }),
    );
    expect(page.visibleViews()).toEqual(["address-token"]);
    expect(page.node("address-token-balance").innerHTML).toContain("1.5000");
    const finish = holdNextRefresh(page);
    const ticking = page.tick();
    await page.settle();

    await finish(null);
    await ticking;

    expect(page.node("address-token-balance").innerHTML).toContain("2.0000");
});