function doPost(e) { return traiterRequete(e); }
function doGet(e)  { return traiterRequete(e); }

function normText(s) {
  return String(s || "").toLowerCase().normalize("NFD").replace(/[\u0300-\u036f]/g, "").replace(/[^a-z0-9]/g, "");
}

function traiterRequete(e) {
  var lock = LockService.getScriptLock();
  try { lock.waitLock(10000); } catch (err) {}

  try {
    var sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
    if (sheet.getLastRow() === 0) {
      sheet.appendRow(["Date Saisie", "Logement", "Voyageur", "Dates Séjour", "Plateforme", "Total Payé Voyageur", "Versement Plateforme", "Base Commissionnable", "Taux Com (%)", "Commission HT", "Ménage Facturé HT", "Autres Frais HT", "Motif Frais", "TVA (20%)", "Com. Abritel", "Total Facturé Conciergerie", "Net Final Propriétaire", "ID Réservation", "ID Hostaway"]);
      sheet.getRange(1, 1, 1, 19).setFontWeight("bold").setBackground("#113D48").setFontColor("#FFFFFF");
    }

    var rawData = (e && e.parameter && e.parameter.payload) ? e.parameter.payload : (e && e.postData && e.postData.contents ? e.postData.contents : null);
    if (!rawData) {
      var cleaned = nettoyerLignesVides(sheet);
      return ContentService.createTextOutput("PRET : Script v3 actif (avec suppression auto) ! Lignes vides nettoyees : " + cleaned).setMimeType(ContentService.MimeType.TEXT);
    }

    var payload = JSON.parse(rawData);
    var urlAction = (e && e.parameter && e.parameter.action) ? e.parameter.action : null;
    var action = urlAction || ((payload && !Array.isArray(payload) && payload.action) ? payload.action : "add");
    var items = (payload && !Array.isArray(payload) && payload.items) ? payload.items : (Array.isArray(payload) ? payload : [payload]);

    // Nettoie toujours les éventuelles lignes à 0 créées par l'ancien script
    nettoyerLignesVides(sheet);

    if (action === "delete" || (items.length > 0 && items[0] && items[0]._isDelete === true)) {
      var deleted = supprimerLignesSheet(sheet, items);
      return ContentService.createTextOutput("SUCCES : " + deleted + " ligne(s) supprimee(s) de Google Sheets !").setMimeType(ContentService.MimeType.TEXT);
    }

    if (action === "update") {
      supprimerLignesSheet(sheet, items);
    }

    var added = 0;
    items.forEach(function(r) {
      if (!r || r.action === "delete" || r._isDelete) return;
      var prop = String(r.propertyName || "").trim();
      var guest = String(r.guestName || "").trim();
      var tot = Number(r.totalPaid) || 0;
      var payout = Number(r.platformPayout) || 0;
      if (!prop && !guest && tot === 0 && payout === 0) return;

      // Évite aussi les doublons si la même réservation existe déjà
      supprimerLignesSheet(sheet, [r]);

      var isAbritel = (r.platformKey === "abritel") || (/abritel|vrbo/i.test(r.platformName || ""));
      var comAbritel = isAbritel ? (Number(r.otaComm || r.reimbursedOta) || 0) : 0;
      sheet.appendRow([new Date(), prop, guest, r.stayDates || "", r.platformName || "", tot, payout, Number(r.netBase) || 0, Number(r.conciergeRate) || 0, Number(r.conciergeComm) || 0, Number(r.cleaningReal) || 0, Number(r.extraFees) || 0, r.extraLabel || "", Number(r.vatAmount) || 0, comAbritel, Number(r.conciergeInvoiceTotal) || 0, Number(r.ownerFinalKeep) || 0, String(r.id || ""), String(r.hostawayId || "")]);
      added++;
    });

    return ContentService.createTextOutput("SUCCES : " + added + " ligne(s) synchronisee(s) !").setMimeType(ContentService.MimeType.TEXT);
  } finally {
    try { lock.releaseLock(); } catch (err) {}
  }
}

function nettoyerLignesVides(sheet) {
  var lastRow = sheet.getLastRow();
  if (lastRow <= 1) return 0;
  var values = sheet.getRange(1, 1, lastRow, Math.max(19, sheet.getLastColumn())).getValues();
  var removed = 0;
  for (var i = values.length - 1; i >= 1; i--) {
    var row = values[i];
    var p = String(row[1] || "").trim();
    var g = String(row[2] || "").trim();
    var d = String(row[3] || "").trim();
    var tot = Number(row[5] || 0);
    var vir = Number(row[6] || 0);
    if (!p && !g && !d && tot === 0 && vir === 0) {
      sheet.deleteRow(i + 1);
      removed++;
    }
  }
  return removed;
}

function supprimerLignesSheet(sheet, itemsToDelete) {
  var lastRow = sheet.getLastRow();
  if (lastRow <= 1) return 0;
  var values = sheet.getRange(1, 1, lastRow, Math.max(19, sheet.getLastColumn())).getValues();
  var count = 0;

  for (var i = values.length - 1; i >= 1; i--) {
    var row = values[i];
    var rowPropNorm  = normText(row[1]);
    var rowGuestNorm = normText(row[2]);
    var rowDatesNorm = normText(row[3]);
    var rowTotal     = Number(row[5] || 0);
    var rowPayout    = Number(row[6] || 0);
    var rowCol17     = String(row[16] || "").trim();
    var rowCol18     = String(row[17] || "").trim();
    var rowCol19     = String(row[18] || "").trim();

    var match = itemsToDelete.some(function(it) {
      if (!it) return false;
      var tId   = String(it.id || "").trim();
      var tHwId = String(it.hostawayId || "").trim();

      // 1. Correspondance par ID Réservation ou ID Hostaway
      if (tId && (rowCol18 === tId || rowCol17 === tId || rowCol19 === tId)) return true;
      if (tHwId && (rowCol18 === tHwId || rowCol19 === tHwId || rowCol17 === tHwId)) return true;

      var tPropNorm  = normText(it.propertyName);
      var tGuestNorm = normText(it.guestName);
      var tDatesNorm = normText(it.stayDates);
      var tTotal     = Number(it.totalPaid || 0);
      var tPayout    = Number(it.platformPayout || 0);

      // 2. Correspondance par Voyageur + Dates de séjour
      if (tGuestNorm && rowGuestNorm === tGuestNorm && tDatesNorm && rowDatesNorm === tDatesNorm) return true;

      // 3. Correspondance souple : Voyageur + Montant Total Payé (ou Virement) pour les anciennes lignes
      if (tGuestNorm && rowGuestNorm === tGuestNorm && tTotal > 0 && Math.abs(rowTotal - tTotal) < 0.05) return true;
      if (tGuestNorm && rowGuestNorm === tGuestNorm && tPayout > 0 && Math.abs(rowPayout - tPayout) < 0.05) return true;

      // 4. Correspondance Logement + Dates + Montant
      if (tPropNorm && rowPropNorm === tPropNorm && tDatesNorm && rowDatesNorm === tDatesNorm && tTotal > 0 && Math.abs(rowTotal - tTotal) < 0.05) return true;

      return false;
    });

    if (match) {
      sheet.deleteRow(i + 1);
      count++;
    }
  }
  return count;
}