/**
 * Copyright (c) 2026 Niolla
 * All rights reserved.
 *
 * This source code is proprietary and confidential.
 * Unauthorized copying, modification, distribution, or use
 * of this file, via any medium, is strictly prohibited.
 */

// app/templates/documents/invoice/invoice.template.js

const { log } = require("../../../utils/consoleLog.utill");

module.exports = async (data) => {
  log("📋 Preparing Invoice data for PDF...");

  let payload = data;

  if (typeof payload === "string") {
    try {
      payload = JSON.parse(payload);
    } catch (error) {
      payload = {};
    }
  }

  const source =
    payload.documentData ||
    payload.document_data ||
    payload.data ||
    payload;

  const deepFind = (node, keys, visited = new Set()) => {
    if (!node || typeof node !== "object" || visited.has(node)) {
      return "";
    }

    visited.add(node);

    for (const key of keys) {
      const value = node[key];
      if (value !== undefined && value !== null && value !== "") {
        return value;
      }
    }

    for (const child of Object.values(node)) {
      const found = deepFind(child, keys, visited);
      if (found !== "") {
        return found;
      }
    }

    return "";
  };

  const pick = (...keys) => {
    const direct = deepFind(source, keys);

    if (direct !== "") {
      return direct;
    }

    return deepFind(payload, keys);
  };

  const templateData = {
    logoUrl:
      pick("logoUrl", "logo_url") ||
      "https://res.cloudinary.com/dtthuvvir/image/upload/v1780748661/company_logo_transperent_bg_uullzw.png",

    title: pick("title") || "INVOICE",
    jobReference:
      pick(
        "jobReference",
        "job_reference",
        "referenceNumber",
        "reference_no",
        "jobRef",
        "job_ref",
      ) || "",
    poNumber: pick("poNumber", "po_number", "poNo", "po_no") || "",
    date: pick("date") || new Date().toLocaleDateString(),
    pageLabel: pick("pageLabel", "page_label") || "Page 01 of 02",

    billToName: pick("billToName", "bill_to_name") || "Client Name",
    billToAddress: pick("billToAddress", "bill_to_address") || "Address",

    vesselName: pick("vesselName", "vessel_name") || "",
    purposeOfCall: pick("purposeOfCall", "purpose_of_call") || "",
    supplyDate: pick("supplyDate", "supply_date") || "",
    grt: pick("grt", "GRT") || "",
    imoNumber: pick("imoNumber", "imo_number", "imo") || "",
    portCountry: pick("portCountry", "port_country") || "",

    items: Array.isArray(source.items) ? source.items : [],

    subtotal: Number(pick("subtotal", "sub_total") || 0),
    tax: Number(pick("tax") || 0),
    discount: Number(pick("discount") || 0),
    total: Number(pick("total") || 0),

    paymentTerms: pick("paymentTerms", "payment_terms") || "",
    notes: pick("notes") || "",
  };

  log("✅ Invoice data prepared");

  return templateData;
};