const MARKETING_FEE_ATOMIC = 100000000n;

function setMarketingMessage(message, type = "") {
  setScopedTransactionMessage("Marketing", marketingMessage, message, type);
}

function decimalToCents(value) {
  const text = String(value || "").trim();
  if (!/^\d+(\.\d{0,2})?$/.test(text)) {
    return null;
  }
  const [whole, fraction = ""] = text.split(".");
  const cents = Number.parseInt(whole || "0", 10) * 100
    + Number.parseInt(fraction.padEnd(2, "0") || "0", 10);
  return Number.isInteger(cents) && cents >= 0 && cents <= 65535 ? cents : null;
}

function updateMarketingDerivedFields() {
  if (marketingFeeInput) {
    marketingFeeInput.value = atomicToDecimal(MARKETING_FEE_ATOMIC);
  }
  if (marketingAdvertiser) {
    marketingAdvertiser.textContent = activeWalletAddressShort || activeWalletAddressHex || "--";
  }
  if (marketingFeeLabel) {
    marketingFeeLabel.textContent = `${atomicToDecimal(MARKETING_FEE_ATOMIC)} ${activeBaseCoin()}`;
  }
}

function marketingCountValue(input) {
  const value = Number.parseInt(input?.value || "0", 10);
  return Number.isInteger(value) && value >= 0 && value <= 255 ? value : null;
}

function validateMarketingForm() {
  if (!walletLoaded) {
    return "Load a wallet before creating a marketing transaction.";
  }
  if (!registrationRegistered) {
    return "Address registration is required before creating a marketing transaction.";
  }
  const campaign = String(marketingCampaignInput?.value || "").trim();
  if (!/^\d+$/.test(campaign)) {
    return "Campaign ID must be a whole number.";
  }
  const keyword = String(marketingKeywordInput?.value || "").trim();
  if (!keyword) {
    return "Keyword is required.";
  }
  if (!/^[\x20-\x7E]+$/.test(keyword) || keyword.length > 40) {
    return "Keyword must be ASCII and no longer than 40 characters.";
  }
  const displayed = String(marketingDisplayedInput?.value || "").trim();
  if (!displayed) {
    return "Displayed location is required.";
  }
  if (!/^[\x20-\x7E]+$/.test(displayed) || displayed.length > 100) {
    return "Displayed location must be ASCII and no longer than 100 characters.";
  }
  if (marketingCountValue(marketingImpressionInput) === null) {
    return "Impressions must be between 0 and 255.";
  }
  if (marketingCountValue(marketingClickInput) === null) {
    return "Clicks must be between 0 and 255.";
  }
  if (decimalToCents(marketingImpressionValueInput?.value) === null) {
    return "Impression value must be between 0.00 and 655.35.";
  }
  if (decimalToCents(marketingClickValueInput?.value) === null) {
    return "Click value must be between 0.00 and 655.35.";
  }
  if (baseCoinBalanceAtomic() < MARKETING_FEE_ATOMIC) {
    return `Marketing transactions require ${atomicToDecimal(MARKETING_FEE_ATOMIC)} ${activeBaseCoin()} for the fee.`;
  }
  return "";
}

function marketingPayload() {
  return {
    campaign: String(marketingCampaignInput.value || "0").trim(),
    adType: marketingAdTypeSelect.value,
    keyword: String(marketingKeywordInput.value || "").trim(),
    displayed: String(marketingDisplayedInput.value || "").trim(),
    impression: marketingCountValue(marketingImpressionInput),
    click: marketingCountValue(marketingClickInput),
    impressionValue: decimalToCents(marketingImpressionValueInput.value),
    clickValue: decimalToCents(marketingClickValueInput.value),
    txfee: String(MARKETING_FEE_ATOMIC)
  };
}

function clearMarketingForm() {
  marketingCampaignInput.value = "";
  marketingAdTypeSelect.value = "banner";
  marketingKeywordInput.value = "";
  marketingDisplayedInput.value = "";
  marketingImpressionInput.value = "0";
  marketingClickInput.value = "0";
  marketingImpressionValueInput.value = "";
  marketingClickValueInput.value = "";
  updateMarketingDerivedFields();
}

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

async function handleMarketingAction(action) {
  const validationError = validateMarketingForm();
  if (validationError) {
    setMarketingMessage(validationError, "error");
    return;
  }
  const invoke = window.__TAURI__?.core?.invoke;
  if (!invoke) {
    setMarketingMessage("Wallet bridge is not available.", "error");
    return;
  }
  const walletKey = await requestSigningWalletKey();
  if (guiRuntimeSettings.require_key_before_signing !== false && !walletKey) {
    setMarketingMessage("Signing cancelled.");
    return;
  }

  setMarketingButtonsDisabled(true);
  try {
    if (action === "save") {
      setMarketingMessage("Saving marketing transaction...");
      const review = await invoke("save_marketing_transaction", {
        ...marketingPayload(),
        walletKey
      });
      clearMarketingForm();
      setMarketingMessage(`Marketing transaction saved: ${review.file_name}`, "success");
      if (typeof refreshUnbroadcastTransactions === "function") {
        refreshUnbroadcastTransactions();
      }
    } else {
      const broadcastNode = activeBroadcastNode();
      if (!broadcastNode) {
        throw new Error("Select a broadcast node before broadcasting.");
      }
      setMarketingMessage("Broadcasting marketing transaction...");
      const result = await invoke("broadcast_marketing_transaction", {
        ...marketingPayload(),
        broadcastNode,
        walletKey
      });
      clearMarketingForm();
      setMarketingMessage(result.response || "Marketing transaction broadcast.", "success");
    }
  } catch (error) {
    setMarketingMessage(String(error), "error");
  } finally {
    setMarketingButtonsDisabled(false);
  }
}

function prepareMarketingForm() {
  updateMarketingDerivedFields();
  setMarketingMessage("");
}

function resetMarketingSession() {
  clearMarketingForm();
  setMarketingMessage("");
}

[
  marketingCampaignInput,
  marketingAdTypeSelect,
  marketingKeywordInput,
  marketingDisplayedInput,
  marketingImpressionInput,
  marketingClickInput,
  marketingImpressionValueInput,
  marketingClickValueInput
].forEach((element) => {
  element?.addEventListener("input", () => setMarketingMessage(""));
  element?.addEventListener("change", () => setMarketingMessage(""));
});
document
  .querySelector("[data-marketing-save]")
  ?.addEventListener("click", () => handleMarketingAction("save"));
document
  .querySelector("[data-marketing-broadcast]")
  ?.addEventListener("click", () => handleMarketingAction("broadcast"));