const menuButton = document.querySelector(".menu-button");
const navigation = document.querySelector(".site-nav");
const form = document.querySelector("#faucet-form");
const address = document.querySelector("#wallet-address");
const message = document.querySelector("#form-message");
const copyAddress = document.querySelector("#copy-address");
const faucetAddress = document.querySelector("#faucet-address");
const requestButton = form.querySelector(".request-button");
let faucetState = {
  network: "testnet",
  symbol: "CLTC",
  claimAmount: "25.00000000",
  online: false,
};

menuButton.addEventListener("click", () => {
  const open = navigation.classList.toggle("open");
  menuButton.setAttribute("aria-expanded", String(open));
});

function displayAmount(value) {
  const numeric = Number(value);
  return Number.isFinite(numeric)
    ? numeric.toLocaleString(undefined, {
        minimumFractionDigits: 0,
        maximumFractionDigits: 8,
      })
    : value;
}

function waitDescription(seconds) {
  const hours = Math.floor(seconds / 3600);
  const minutes = Math.ceil((seconds % 3600) / 60);
  return hours > 0
    ? `${hours} hour${hours === 1 ? "" : "s"} and ${minutes} minute${minutes === 1 ? "" : "s"}`
    : `${minutes} minute${minutes === 1 ? "" : "s"}`;
}

function applyStatus(status) {
  const network = status.network || "testnet";
  const symbol = status.symbol || "CLTC";
  const claimAmount = status.claim_amount || "25.00000000";
  const displayClaim = displayAmount(claimAmount);
  const networkTitle = network.charAt(0).toUpperCase() + network.slice(1);

  faucetState = {
    network,
    symbol,
    claimAmount,
    online: Boolean(status.online),
  };

  document.querySelector("#brand-network").textContent = `${network.toUpperCase()} FAUCET`;
  document.querySelector("#network-coordinate").textContent =
    `${network.toUpperCase()} / ${displayClaim} ${symbol}`;
  document.querySelector("#eyebrow-network").textContent = network;
  document.querySelector("#intro-amount").textContent = `${displayClaim} ${symbol}`;
  document.querySelector("#intro-network").textContent = network;
  document.querySelector("#input-symbol").textContent = symbol;
  document.querySelector("#address-note").textContent =
    `The wallet must already be registered on ${network}.`;
  document.querySelector("#request-label").textContent =
    `Request ${displayClaim} ${symbol}`;
  document.querySelector("#rule-amount").textContent = displayClaim;
  document.querySelector("#rule-symbol").textContent = `${symbol} per request`;
  document.querySelector("#tip-label").textContent = `Send ${symbol} tips to:`;
  document.querySelector("#lower-network").textContent = networkTitle;
  document.querySelector("#footer-network").textContent =
    `${network.toUpperCase()} COINS HAVE NO MONETARY VALUE`;

  faucetAddress.textContent =
    status.faucet_address || `Faucet ${network} address is not configured`;
  document.querySelector("#faucet-balance").textContent =
    status.faucet_balance === null
      ? `-- ${symbol}`
      : `${displayAmount(status.faucet_balance)} ${symbol}`;
  document.querySelector("#total-claimed").textContent =
    `${displayAmount(status.total_claimed || "0")} ${symbol}`;
  document.querySelector("#total-addresses").textContent =
    Number(status.total_addresses || 0).toLocaleString();

  const faucetStatus = document.querySelector("#faucet-status");
  faucetStatus.lastChild.textContent = status.online ? " Online" : " Offline";
  faucetStatus.classList.toggle("offline", !status.online);
  requestButton.disabled = !status.online;
}

async function refreshStatus() {
  try {
    const response = await fetch("api.php", {
      headers: { Accept: "application/json" },
      cache: "no-store",
    });
    const status = await response.json();
    if (!response.ok || !status.success) {
      throw new Error(status.error || "Status request failed.");
    }
    applyStatus(status);
  } catch {
    applyStatus({
      network: faucetState.network,
      symbol: faucetState.symbol,
      claim_amount: faucetState.claimAmount,
      online: false,
      faucet_address: "",
      faucet_balance: null,
      total_claimed: "0",
      total_addresses: 0,
    });
  }
}

form.addEventListener("submit", async (event) => {
  event.preventDefault();
  const value = address.value.trim();
  const suffix = faucetState.network === "mainnet" ? "clc" : "cltc";
  const escapedSuffix = suffix.replace(".", "\\.");
  const valid = new RegExp(
    `^[a-f0-9]{40}\\.${escapedSuffix}$`,
    "i",
  ).test(value);

  message.classList.add("visible");
  message.classList.remove("success");
  if (!valid) {
    message.textContent =
      `Enter a valid registered Contractless wallet address ending in .${suffix}.`;
    return;
  }

  requestButton.disabled = true;
  message.textContent = "Creating and broadcasting your faucet transaction...";

  try {
    const response = await fetch("api.php", {
      method: "POST",
      headers: {
        Accept: "application/json",
        "Content-Type": "application/json",
      },
      body: JSON.stringify({ address: value }),
    });
    const result = await response.json();
    if (!response.ok || !result.success) {
      const retry = result.retry_after_seconds
        ? ` Try again in ${waitDescription(result.retry_after_seconds)}.`
        : "";
      throw new Error((result.error || "The faucet request failed.") + retry);
    }

    message.classList.add("success");
    message.textContent =
      `${displayAmount(result.amount)} ${result.symbol} was broadcast. ` +
      `Transaction: ${result.txid}`;
    address.value = "";
    await refreshStatus();
  } catch (error) {
    message.textContent =
      error instanceof Error ? error.message : "The faucet request failed.";
  } finally {
    requestButton.disabled = !faucetState.online;
  }
});

copyAddress.addEventListener("click", async () => {
  try {
    await navigator.clipboard.writeText(faucetAddress.textContent.trim());
    copyAddress.textContent = "Copied";
  } catch {
    copyAddress.textContent = "Copy failed";
  }

  setTimeout(() => {
    copyAddress.textContent = "Copy address";
  }, 1800);
});

refreshStatus();