// Transaction detail view — shows full details for a single transaction.
// Shared by addressDetail and addressToken via ctx.showTransactionDetail().

const {
    $,
    showView,
    showFlash,
    addressDotHtml,
    addressTitle,
    escapeHtml,
    isoDate,
    timeAgo,
} = require("./helpers");
const { state } = require("../../shared/state");
const makeBlockie = require("ethereum-blockies-base64");

const EXT_ICON =
    `<span style="display:inline-block;width:10px;height:10px;margin-left:4px;vertical-align:middle">` +
    `<svg viewBox="0 0 12 12" fill="none" stroke="currentColor" stroke-width="1.5">` +
    `<path d="M4.5 1.5H2a.5.5 0 00-.5.5v8a.5.5 0 00.5.5h8a.5.5 0 00.5-.5V7.5"/>` +
    `<path d="M7 1.5h3.5V5M7 5.5L10.5 1.5"/>` +
    `</svg></span>`;

let ctx;

function copyableHtml(text, extraClass) {
    const cls =
        "underline decoration-dashed cursor-pointer" +
        (extraClass ? " " + extraClass : "");
    return `<span class="${cls}" data-copy="${escapeHtml(text)}">${escapeHtml(text)}</span>`;
}

function blockieHtml(address) {
    const src = makeBlockie(address);
    return `<img src="${src}" width="48" height="48" style="image-rendering:pixelated;border-radius:50%;display:inline-block">`;
}

function txAddressHtml(address, ensName, title) {
    const blockie = blockieHtml(address);
    const dot = addressDotHtml(address);
    const link = `https://etherscan.io/address/${address}`;
    const extLink = `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
    let html = `<div class="mb-1">${blockie}</div>`;
    if (title) {
        html += `<div class="flex items-center font-bold">${dot}${escapeHtml(title)}</div>`;
    }
    if (ensName) {
        html +=
            `<div class="flex items-center">${title ? "" : dot}` +
            copyableHtml(ensName, "") +
            extLink +
            `</div>` +
            `<div class="break-all">` +
            copyableHtml(address, "break-all") +
            `</div>`;
    } else {
        html +=
            `<div class="flex items-center">${title ? "" : dot}` +
            copyableHtml(address, "break-all") +
            extLink +
            `</div>`;
    }
    return html;
}

function txHashHtml(hash) {
    const link = `https://etherscan.io/tx/${hash}`;
    const extLink = `<a href="${link}" target="_blank" rel="noopener" class="inline-flex items-center">${EXT_ICON}</a>`;
    return copyableHtml(hash, "break-all") + extLink;
}

function show(tx) {
    state.viewData = {
        tx: {
            hash: tx.hash,
            from: tx.from,
            to: tx.to,
            value: tx.value,
            exactValue: tx.exactValue || tx.value,
            rawAmount: tx.rawAmount || "",
            rawUnit: tx.rawUnit || "",
            symbol: tx.symbol,
            timestamp: tx.timestamp,
            isError: tx.isError,
            fromEns: tx.fromEns || null,
            toEns: tx.toEns || null,
            directionLabel: tx.directionLabel || null,
        },
    };
    render();
}

function render() {
    const tx = state.viewData.tx;
    if (!tx) return;
    $("tx-detail-hash").innerHTML = txHashHtml(tx.hash);

    const fromTitle = addressTitle(tx.from, state.wallets);
    const toTitle = addressTitle(tx.to, state.wallets);
    $("tx-detail-from").innerHTML = txAddressHtml(
        tx.from,
        tx.fromEns,
        fromTitle,
    );
    $("tx-detail-to").innerHTML = txAddressHtml(tx.to, tx.toEns, toTitle);

    // Exact amount (full precision, copyable)
    const exactStr = tx.exactValue
        ? tx.exactValue + " " + tx.symbol
        : tx.directionLabel + " " + tx.symbol;
    $("tx-detail-value").innerHTML = copyableHtml(exactStr, "font-bold");

    // Native quantity (raw integer, copyable)
    const nativeEl = $("tx-detail-native");
    if (tx.rawAmount && tx.rawUnit) {
        const nativeStr = tx.rawAmount + " " + tx.rawUnit;
        nativeEl.innerHTML = copyableHtml(nativeStr, "");
        nativeEl.parentElement.classList.remove("hidden");
    } else {
        nativeEl.innerHTML = "";
        nativeEl.parentElement.classList.add("hidden");
    }

    $("tx-detail-time").textContent =
        isoDate(tx.timestamp) + " (" + timeAgo(tx.timestamp) + ")";
    $("tx-detail-status").textContent = tx.isError ? "Failed" : "Success";
    showView("transaction");

    document
        .getElementById("view-transaction")
        .querySelectorAll("[data-copy]")
        .forEach((el) => {
            el.onclick = () => {
                navigator.clipboard.writeText(el.dataset.copy);
                showFlash("Copied!");
            };
        });
}

function init(_ctx) {
    ctx = _ctx;
    $("btn-tx-back").addEventListener("click", () => {
        if (state.selectedToken) {
            ctx.showAddressToken();
        } else {
            ctx.showAddressDetail();
        }
    });
}

module.exports = { init, show, render };