const ISSUE_TOKEN_FEE_ATOMIC = 10000000000n;
let issueTokenEligibility = null;
let issueTokenLookupId = 0;

function setIssueTokenMessage(message, type = "") {
  setScopedTransactionMessage("Issue More Tokens", issueTokenMessage, message, type);
}

function setIssueTokenButtonsDisabled(disabled) {
  document.querySelector("[data-issue-token-save]")?.toggleAttribute("disabled", disabled);
  document.querySelector("[data-issue-token-broadcast]")?.toggleAttribute("disabled", disabled);
}

function updateIssueTokenFee() {
  const displayFee = tokenAtomicToDecimal(ISSUE_TOKEN_FEE_ATOMIC);
  if (issueTokenFeeInput) {
    issueTokenFeeInput.value = displayFee;
  }
  if (issueTokenFeeLabel) {
    issueTokenFeeLabel.textContent = `${displayFee} ${activeBaseCoin()}`;
  }
}

function resetIssueTokenDetails() {
  issueTokenEligibility = null;
  if (issueTokenCreator) {
    issueTokenCreator.textContent = "--";
  }
  if (issueTokenPolicy) {
    issueTokenPolicy.textContent = "--";
  }
  setIssueTokenButtonsDisabled(true);
}

async function refreshIssueTokenEligibility() {
  const invoke = window.__TAURI__?.core?.invoke;
  const broadcastNode = activeBroadcastNode();
  const walletAddress = activeWalletAddressShort || activeWalletAddressHex || "";
  const ticker = String(issueTokenTickerSelect?.value || "").trim();
  const lookupId = ++issueTokenLookupId;
  resetIssueTokenDetails();

  if (!ticker || !invoke || !broadcastNode || !walletLoaded) {
    return;
  }

  setIssueTokenMessage("Checking token issuance policy...");
  try {
    const details = await invokeWalletRpcWithBackoff(
      "Token details lookup",
      () => invoke("issue_token_details", { broadcastNode, ticker }),
      () =>
        lookupId === issueTokenLookupId &&
        walletLoaded &&
        (activeWalletAddressShort || activeWalletAddressHex || "") === walletAddress &&
        activeBroadcastNode() === broadcastNode &&
        issueTokenTickerSelect?.value === ticker
    );
    if (lookupId !== issueTokenLookupId) {
      return;
    }

    issueTokenEligibility = details;
    if (issueTokenCreator) {
      issueTokenCreator.textContent = details.creator || "--";
    }
    if (issueTokenPolicy) {
      issueTokenPolicy.textContent = details.hard_limit
        ? "Hard capped"
        : "Future issuance allowed";
    }

    if (!details.eligible) {
      setIssueTokenMessage(
        details.reason || "This token cannot be issued by the active wallet.",
        "error"
      );
      return;
    }

    setIssueTokenMessage("The active wallet may issue more of this token.", "success");
    setIssueTokenButtonsDisabled(false);
  } catch (error) {
    if (lookupId !== issueTokenLookupId) {
      return;
    }
    setIssueTokenMessage(String(error), "error");
  }
}

async function refreshIssueTokenList() {
  issueTokenLookupId += 1;
  const invoke = window.__TAURI__?.core?.invoke;
  const broadcastNode = activeBroadcastNode();
  const walletAddress = activeWalletAddressShort || activeWalletAddressHex || "";
  resetIssueTokenDetails();
  if (!issueTokenTickerSelect) {
    return;
  }

  issueTokenTickerSelect.innerHTML = "";
  const loadingOption = document.createElement("option");
  loadingOption.value = "";
  loadingOption.textContent = "Loading tokens...";
  issueTokenTickerSelect.appendChild(loadingOption);

  if (!invoke || !walletLoaded || !broadcastNode) {
    loadingOption.textContent = "Load a wallet and select a node";
    return;
  }

  try {
    const tokens = await invokeWalletRpcWithBackoff(
      "Token list lookup",
      () => invoke("token_list", { broadcastNode }),
      () =>
        walletLoaded &&
        (activeWalletAddressShort || activeWalletAddressHex || "") === walletAddress &&
        activeBroadcastNode() === broadcastNode
    );
    if (
      !walletLoaded ||
      (activeWalletAddressShort || activeWalletAddressHex || "") !== walletAddress ||
      activeBroadcastNode() !== broadcastNode
    ) {
      return;
    }
    issueTokenTickerSelect.innerHTML = "";
    const tokenItems = Array.isArray(tokens) ? tokens : [];
    if (!tokenItems.length) {
      const option = document.createElement("option");
      option.value = "";
      option.textContent = "No tokens exist";
      issueTokenTickerSelect.appendChild(option);
      setIssueTokenMessage("No tokens are available to issue.", "error");
      return;
    }

    tokenItems.forEach((token) => {
      const ticker = String(token?.ticker || "").trim();
      if (!ticker) {
        return;
      }
      const option = document.createElement("option");
      option.value = ticker;
      option.textContent = ticker;
      issueTokenTickerSelect.appendChild(option);
    });
    await refreshIssueTokenEligibility();
  } catch (error) {
    issueTokenTickerSelect.innerHTML = "";
    const option = document.createElement("option");
    option.value = "";
    option.textContent = "Token list unavailable";
    issueTokenTickerSelect.appendChild(option);
    setIssueTokenMessage(String(error), "error");
  }
}

function validateIssueTokenForm() {
  if (!walletLoaded) {
    return "Load a wallet before issuing tokens.";
  }
  if (!registrationRegistered) {
    return "Address registration is required before issuing tokens.";
  }
  if (!issueTokenEligibility?.eligible) {
    return issueTokenEligibility?.reason || "Select a token the active wallet may issue.";
  }

  const number = tokenDecimalToAtomic(issueTokenNumberInput?.value);
  if (number === null || number <= 0n) {
    return "Enter a valid additional supply with up to 8 decimal places.";
  }

  const baseCoin = activeBaseCoin();
  const baseBalance = (Array.isArray(activeWalletBalances) ? activeWalletBalances : []).find(
    (balance) =>
      String(balance.asset || "").trim().toUpperCase() === baseCoin &&
      !Number(balance.nft_series || 0)
  );
  if (baseBalance && balanceAtomicValue(baseBalance) < ISSUE_TOKEN_FEE_ATOMIC) {
    return `This transaction requires ${tokenAtomicToDecimal(ISSUE_TOKEN_FEE_ATOMIC)} ${baseCoin}.`;
  }
  return "";
}

function issueTokenPayload() {
  return {
    broadcastNode: activeBroadcastNode(),
    ticker: String(issueTokenTickerSelect?.value || "").trim(),
    number: String(tokenDecimalToAtomic(issueTokenNumberInput?.value) || 0n),
    txfee: String(ISSUE_TOKEN_FEE_ATOMIC)
  };
}

function clearIssueTokenForm() {
  if (issueTokenNumberInput) {
    issueTokenNumberInput.value = "";
  }
}

async function handleIssueTokenAction(action) {
  const error = validateIssueTokenForm();
  if (error) {
    setIssueTokenMessage(error, "error");
    return;
  }

  const invoke = window.__TAURI__?.core?.invoke;
  if (!invoke) {
    setIssueTokenMessage("Wallet bridge is not available.", "error");
    return;
  }

  const walletKey = await requestSigningWalletKey();
  if (guiRuntimeSettings.require_key_before_signing !== false && !walletKey) {
    setIssueTokenMessage("Signing cancelled.");
    return;
  }

  setIssueTokenButtonsDisabled(true);
  try {
    if (action === "save") {
      setIssueTokenMessage("Saving issue-token transaction...");
      const review = await invoke("save_issue_token_transaction", {
        ...issueTokenPayload(),
        walletKey
      });
      clearIssueTokenForm();
      setIssueTokenMessage(`Issue-token transaction saved: ${review.file_name}`, "success");
      if (typeof refreshUnbroadcastTransactions === "function") {
        refreshUnbroadcastTransactions();
      }
    } else {
      setIssueTokenMessage("Broadcasting issue-token transaction...");
      const result = await invoke("broadcast_issue_token_transaction", {
        ...issueTokenPayload(),
        walletKey
      });
      if (typeof invalidateAssetsCatalog === "function") {
        invalidateAssetsCatalog();
      }
      clearIssueTokenForm();
      setIssueTokenMessage(result.response || "Issue-token transaction broadcast.", "success");
    }
  } catch (actionError) {
    setIssueTokenMessage(String(actionError), "error");
  } finally {
    setIssueTokenButtonsDisabled(!issueTokenEligibility?.eligible);
  }
}

function prepareIssueTokenForm() {
  updateIssueTokenFee();
  setIssueTokenMessage("");
  refreshIssueTokenList();
}

function resetIssueTokenSession() {
  issueTokenLookupId += 1;
  resetIssueTokenDetails();
  if (issueTokenTickerSelect) {
    issueTokenTickerSelect.innerHTML = '<option value="">Load a wallet first</option>';
  }
  clearIssueTokenForm();
  setIssueTokenMessage("");
}

issueTokenTickerSelect?.addEventListener("change", refreshIssueTokenEligibility);
issueTokenNumberInput?.addEventListener("input", () => {
  if (issueTokenEligibility?.eligible) {
    setIssueTokenMessage("");
  }
});
document
  .querySelector("[data-issue-token-save]")
  ?.addEventListener("click", () => handleIssueTokenAction("save"));
document
  .querySelector("[data-issue-token-broadcast]")
  ?.addEventListener("click", () => handleIssueTokenAction("broadcast"));