import { useState } from "react";
import DashboardLayout from "@/components/DashboardLayout";
import { Card, CardContent } from "@/components/ui/card";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Badge } from "@/components/ui/badge";
import { Checkbox } from "@/components/ui/checkbox";
import {
  AlertDialog,
  AlertDialogAction,
  AlertDialogCancel,
  AlertDialogContent,
  AlertDialogDescription,
  AlertDialogFooter,
  AlertDialogHeader,
  AlertDialogTitle,
} from "@/components/ui/alert-dialog";
import {
  Dialog,
  DialogContent,
  DialogDescription,
  DialogFooter,
  DialogHeader,
  DialogTitle,
} from "@/components/ui/dialog";
import {
  Table,
  TableBody,
  TableCell,
  TableHead,
  TableHeader,
  TableRow,
} from "@/components/ui/table";
import { trpc } from "@/lib/trpc";
import { Search, FileText, Download, FileSpreadsheet, Trash2, Edit, Trash, CheckCircle, CheckCircle2, ShieldCheck, RefreshCw } from "lucide-react";

// Helper : télécharge un PDF annoté BAP depuis son URL de stockage
// Nommage : AAAA-MM-JJ - Fournisseur - N°Facture.pdf
function downloadBapPdf(
  pdfUrl: string,
  supplierName?: string,
  invoiceNumber?: string | null,
  validatedAt?: Date | string | null
) {
  const fallback = pdfUrl.split('/').pop() || 'BAP.pdf';
  const downloadUrl = `/api/download-bap?pdfPath=${encodeURIComponent(pdfUrl)}`;
  const datePart = validatedAt
    ? new Date(validatedAt).toLocaleDateString('fr-CA') // AAAA-MM-JJ
    : new Date().toLocaleDateString('fr-CA');
  const supplierPart = (supplierName || '').replace(/[^a-zA-Z0-9à-ÿ \-]/g, '').trim();
  const numberPart = (invoiceNumber || '').replace(/[^a-zA-Z0-9\-]/g, '').trim();
  const parts = [datePart, supplierPart, numberPart].filter(Boolean);
  const filename = parts.length > 0 ? `${parts.join(' - ')}.pdf` : fallback;
  const a = document.createElement('a');
  a.href = downloadUrl;
  a.download = filename;
  document.body.appendChild(a);
  a.click();
  document.body.removeChild(a);
}
import * as XLSX from 'xlsx';
import { toast } from "sonner";
import { useLocation } from "wouter";

// Helper function to determine field color based on origin
const getFieldColor = (invoice: any, fieldName: string): string => {
  try {
    const autoFilledFields = invoice.autoFilledFields ? JSON.parse(invoice.autoFilledFields) : [];
    if (autoFilledFields.includes(fieldName)) {
      return "text-green-600 font-semibold"; // Auto-filled by rules
    }
    // If field has a value but is not auto-filled, it's manual
    if (invoice[fieldName]) {
      return "text-blue-600 font-semibold"; // Manually filled
    }
  } catch (error) {
    console.error("Error parsing autoFilledFields:", error);
  }
  return ""; // No color for empty fields
};

export default function InvoicesBAP() {
  const [, setLocation] = useLocation();
  const [searchQuery, setSearchQuery] = useState("");
  const [selectedIds, setSelectedIds] = useState<number[]>([]);
  const [statusFilter, setStatusFilter] = useState<string>("all");
  const [deleteDialogOpen, setDeleteDialogOpen] = useState(false);
  const [invoiceToDelete, setInvoiceToDelete] = useState<number | null>(null);
  const [addDialogOpen, setAddDialogOpen] = useState(false);
  const [addDialogType, setAddDialogType] = useState<"service" | "ventilation" | null>(null);
  const [newItemName, setNewItemName] = useState("");
  const [pendingInvoiceId, setPendingInvoiceId] = useState<number | null>(null);
  // Map invoiceId -> pdfUrl après validation BAP (pour bouton téléchargement)
  const [bapPdfUrls, setBapPdfUrls] = useState<Record<number, string>>({});
  const [textDialogOpen, setTextDialogOpen] = useState(false);
  const [selectedInvoiceText, setSelectedInvoiceText] = useState<string | null>(null);
  const { data: allInvoices, isLoading } = trpc.invoices.list.useQuery();
  // Filter for BAP invoices only (Abonnement = NON, isSubscription = 0)
  const invoices = allInvoices?.filter(inv => inv.isSubscription === 0);
  const { data: departments } = trpc.departments.getByUser.useQuery();
  const { data: allocations } = trpc.accountingAllocations.getByUser.useQuery();
  const utils = trpc.useUtils();

  const exportExcelMutation = trpc.sftp.exportToExcel.useMutation({
    onSuccess: (data) => {
      // Generate Excel file
      const worksheet = XLSX.utils.json_to_sheet(data.invoices.map(inv => ({
        'Fournisseur': inv.supplierName,
        'N\u00b0 Facture': inv.invoiceNumber,
        'Date': inv.invoiceDate,
        'N\u00b0 Bon de livraison': inv.deliveryNoteNumber,
        'N\u00b0 Commande': inv.orderNumber,
        'Montant': inv.totalAmount,
        'Score': inv.qualityScore,
        'Statut export': inv.exportStatus,
        'Export\u00e9 le': inv.exportedAt,
        'Cr\u00e9\u00e9 le': inv.createdAt,
      })));
      
      const workbook = XLSX.utils.book_new();
      XLSX.utils.book_append_sheet(workbook, worksheet, 'Factures');
      
      // Download Excel file
      XLSX.writeFile(workbook, `factures_${new Date().toISOString().split('T')[0]}.xlsx`);
      
      toast.success(`${data.invoices.length} facture(s) export\u00e9e(s) en Excel`);
      setSelectedIds([]);
    },
    onError: (error) => {
      toast.error(error.message || "Erreur lors de l'export Excel");
    },
  });
  
  const exportMutation = trpc.sftp.exportToPdf.useMutation({
    onSuccess: (data) => {
      toast.success(
        `${data.copiedCount} facture(s) exportée(s) avec succès vers:\n${data.exportFolder}`,
        { duration: 5000 }
      );
      
      setSelectedIds([]);
      utils.invoices.list.invalidate();
    },
    onError: (error) => {
      toast.error(error.message || "Erreur lors de l'export");
    },
  });

  const deleteMutation = trpc.invoices.delete.useMutation({
    onSuccess: () => {
      toast.success("Facture supprimée avec succès");
      utils.invoices.list.invalidate();
      setDeleteDialogOpen(false);
      setInvoiceToDelete(null);
    },
    onError: (error) => {
      toast.error(error.message || "Erreur lors de la suppression");
    },
  });

  const upsertLearningMutation = trpc.learnings.upsert.useMutation();

  const reprocessMutation = trpc.invoices.reprocessSelected.useMutation({
    onSuccess: (data) => {
      if (data.errors > 0) {
        toast.warning(`${data.processed} facture(s) retraitée(s), ${data.errors} erreur(s).`, { duration: 5000 });
      } else {
        toast.success(`${data.processed} facture(s) retraitée(s) avec succès !`, { duration: 4000 });
      }
      setSelectedIds([]);
      utils.invoices.list.invalidate();
    },
    onError: (error) => {
      toast.error(error.message || "Erreur lors du retraitement");
    },
  });

  const validateBAPBulkMutation = trpc.invoices.validateBAPBulk.useMutation({
    onSuccess: (data) => {
      if (data.processed === 0) {
        toast.info("Aucune facture éligible à valider en BAP.");
      } else {
        toast.success(`${data.processed} facture(s) validée(s) BAP avec succès !`, { duration: 4000 });
        const pdfUrls = (data.results as any[]).filter(r => r.pdfUrl).map(r => r.pdfUrl as string);
        if (pdfUrls.length > 0) {
          pdfUrls.forEach(url => window.open(url, '_blank'));
        }
      }
      utils.invoices.list.invalidate();
    },
    onError: (error) => {
      toast.error(error.message || "Erreur lors de la validation BAP en masse");
    },
  });

  const validateBAPMutation = trpc.invoices.validateBAP.useMutation({
    onSuccess: (data) => {
      // Stocker le pdfUrl pour le bouton téléchargement
      if (data.invoiceId && data.pdfUrl) {
        setBapPdfUrls(prev => ({ ...prev, [data.invoiceId as number]: data.pdfUrl as string }));
      }
      if (data.exportMode === 'browser' && data.pdfUrl) {
        toast.success("Facture validée BAP ! Ouverture du PDF annoté...", { duration: 3000 });
        window.open(data.pdfUrl, '_blank');
      } else if (data.exportMode === 'folder' && data.exportPath) {
        toast.success(`Facture validée BAP ! PDF enregistré dans : ${data.exportPath}`, { duration: 6000 });
      } else {
        toast.success("Facture validée BAP avec succès !");
      }
      utils.invoices.list.invalidate();
    },
    onError: (error) => {
      toast.error(error.message || "Erreur lors de la validation BAP");
    },
  });

  const updateFieldMutation = trpc.invoices.update.useMutation({
    onSuccess: () => {
      toast.success("Facture mise à jour");
      utils.invoices.list.invalidate();
    },
    onError: (error) => {
      toast.error(error.message || "Erreur lors de la mise à jour");
    },
  });

  const createDepartmentMutation = trpc.departments.create.useMutation({
    onSuccess: (newDept) => {
      toast.success("Service ajouté avec succès");
      utils.departments.getByUser.invalidate();
      // Update the invoice with the new department
      if (pendingInvoiceId) {
        updateFieldMutation.mutate({
          id: pendingInvoiceId,
          data: { serviceConcerne: newDept.name },
        });
      }
      setAddDialogOpen(false);
      setNewItemName("");
      setPendingInvoiceId(null);
    },
    onError: (error) => {
      toast.error(error.message || "Erreur lors de l'ajout");
    },
  });

  const createAllocationMutation = trpc.accountingAllocations.create.useMutation({
    onSuccess: (newAlloc) => {
      toast.success("Ventilation ajoutée avec succès");
      utils.accountingAllocations.getByUser.invalidate();
      // Update the invoice with the new allocation
      if (pendingInvoiceId) {
        updateFieldMutation.mutate({
          id: pendingInvoiceId,
          data: { ventilationComptable: newAlloc.name },
        });
      }
      setAddDialogOpen(false);
      setNewItemName("");
      setPendingInvoiceId(null);
    },
    onError: (error) => {
      toast.error(error.message || "Erreur lors de l'ajout");
    },
  });

  const handleAddNewItem = () => {
    if (!newItemName.trim()) {
      toast.error("Le nom ne peut pas être vide");
      return;
    }
    if (addDialogType === "service") {
      createDepartmentMutation.mutate({ name: newItemName.trim() });
    } else if (addDialogType === "ventilation") {
      createAllocationMutation.mutate({ name: newItemName.trim() });
    }
  };

  const filteredInvoices = invoices?.filter((inv) => {
    // Filter by search query
    if (searchQuery) {
      const query = searchQuery.toLowerCase();
      const matchesSearch = inv.supplierName?.toLowerCase().includes(query) ||
        inv.invoiceNumber?.toLowerCase().includes(query);
      if (!matchesSearch) return false;
    }
    
    // Filter by export status
    if (statusFilter !== "all") {
      if (statusFilter === "exported" && inv.exportStatus !== "exported") return false;
      if (statusFilter === "not_exported" && inv.exportStatus !== "not_exported") return false;
      if (statusFilter === "export_error" && inv.exportStatus !== "export_error") return false;
    }
    
    return true;
  });
  
  const statusCounts = {
    all: invoices?.length || 0,
    exported: invoices?.filter(inv => inv.exportStatus === "exported").length || 0,
    not_exported: invoices?.filter(inv => inv.exportStatus === "not_exported").length || 0,
    export_error: invoices?.filter(inv => inv.exportStatus === "export_error").length || 0,
  };
  
  // Old filter logic (to be removed)
  const _oldFilteredInvoices = invoices?.filter((inv) => {
    if (!searchQuery) return true;
    const query = searchQuery.toLowerCase();
    return (
      inv.supplierName?.toLowerCase().includes(query) ||
      inv.invoiceNumber?.toLowerCase().includes(query)
    );
  });

  const handleSelectAll = (checked: boolean) => {
    if (checked) {
      // Select only exportable invoices
      const exportableIds = (filteredInvoices || [])
        .filter(inv => isEligibleForExport(inv))
        .map(inv => inv.id);
      setSelectedIds(exportableIds);
    } else {
      setSelectedIds([]);
    }
  };

  const handleSelectOne = (id: number, checked: boolean) => {
    if (checked) {
      setSelectedIds([...selectedIds, id]);
    } else {
      setSelectedIds(selectedIds.filter(selectedId => selectedId !== id));
    }
  };

  const handleExport = () => {
    if (selectedIds.length === 0) {
      toast.error("Veuillez s\u00e9lectionner au moins une facture");
      return;
    }
    
    exportMutation.mutate({ invoiceIds: selectedIds });
  };
  
  const handleExportExcel = () => {
    if (selectedIds.length === 0) {
      toast.error("Veuillez s\u00e9lectionner au moins une facture");
      return;
    }
    
    exportExcelMutation.mutate({ invoiceIds: selectedIds });
  };

  const getExportStatusBadge = (status: string) => {
    switch (status) {
      case "exported":
        return <Badge className="bg-green-100 text-green-800 hover:bg-green-100">Exporté</Badge>;
      case "not_exported":
        return <Badge className="bg-blue-100 text-blue-800 hover:bg-blue-100">Non exporté</Badge>;
      case "export_error":
        return <Badge className="bg-red-100 text-red-800 hover:bg-red-100">Erreur export</Badge>;
      default:
        return <Badge variant="outline">{status}</Badge>;
    }
  };

  const getQualityBadge = (score: number | null) => {
    if (score === null) return <Badge variant="outline">-</Badge>;
    if (score === 100) return <Badge className="bg-green-100 text-green-800 hover:bg-green-100">{score}%</Badge>;
    if (score >= 80) return <Badge className="bg-yellow-100 text-yellow-800 hover:bg-yellow-100">{score}%</Badge>;
    return <Badge className="bg-red-100 text-red-800 hover:bg-red-100">{score}%</Badge>;
  };

  const isEligibleForExport = (invoice: any) => {
    // Une facture BAP est exportable si :
    // 1. Score = 100%
    // 2. Type d'achat rempli
    // 3. Service concerné rempli
    // 4. Ventilation comptable remplie
    return (
      (invoice.qualityScore || 0) === 100 &&
      invoice.typeAchat &&
      invoice.serviceConcerne &&
      invoice.ventilationComptable
    );
  };

  const isEligibleForBAPValidation = (invoice: any) => {
    // Une facture peut être validée BAP si :
    // 1. Score = 100%
    // 2. Non encore exportée (exportStatus !== 'exported')
    // 3. Abonnement = NON (isSubscription = 0)
    // 4. Service concerné rempli
    // 5. Type d'achat rempli
    // 6. Ventilation comptable remplie
    return (
      (invoice.qualityScore || 0) === 100 &&
      invoice.exportStatus !== "exported" &&
      invoice.isSubscription === 0 &&
      invoice.serviceConcerne &&
      invoice.typeAchat &&
      invoice.ventilationComptable
    );
  };

  const getBAPValidationTooltip = (invoice: any): string => {
    const reasons: string[] = [];
    if ((invoice.qualityScore || 0) < 100) reasons.push("Score < 100%");
    if (invoice.exportStatus === "exported") reasons.push("Déjà exportée");
    if (invoice.isSubscription !== 0) reasons.push("Marquée comme abonnement");
    if (!invoice.serviceConcerne) reasons.push("Service manquant");
    if (!invoice.typeAchat) reasons.push("Type d'achat manquant");
    if (!invoice.ventilationComptable) reasons.push("Ventilation manquante");
    if (reasons.length === 0) return "Valider cette facture BAP";
    return `Non éligible : ${reasons.join(", ")}`;
  };
  
  const hasOnlyEligibleSelected = selectedIds.length > 0 && selectedIds.every(id => {
    const invoice = invoices?.find(inv => inv.id === id);
    return invoice && isEligibleForExport(invoice);
  });

  const allEligibleSelected = (filteredInvoices?.length || 0) > 0 && 
    (filteredInvoices || []).filter(inv => isEligibleForExport(inv)).every(inv => selectedIds.includes(inv.id));

  return (
    <DashboardLayout>
      <div className="space-y-6">
        <div className="flex items-center justify-between">
          <div>
            <h1 className="text-3xl font-bold">Factures BAP</h1>
            <p className="text-gray-500 mt-1">Factures non-abonnement (Abonnement = NON)</p>
          </div>
          <div className="flex gap-2">
            <Button
              onClick={handleExportExcel}
              disabled={selectedIds.length === 0 || exportExcelMutation.isPending}
              variant="outline"
              className="border-green-600 text-green-600 hover:bg-green-50"
            >
              <FileSpreadsheet className="w-4 h-4 mr-2" />
              Excel ({selectedIds.length})
            </Button>
            <Button
              onClick={handleExport}
              disabled={selectedIds.length === 0 || exportMutation.isPending}
              className="bg-blue-600 hover:bg-blue-700"
            >
              <Download className="w-4 h-4 mr-2" />
              Exporter ({selectedIds.length})
            </Button>
            <Button
              onClick={async () => {
                if (confirm(`Voulez-vous vraiment supprimer ${selectedIds.length} facture(s) ?`)) {
                  try {
                    for (const id of selectedIds) {
                      await utils.client.invoices.delete.mutate({ id });
                    }
                    toast.success(`${selectedIds.length} facture(s) supprimée(s)`);
                    setSelectedIds([]);
                    utils.invoices.list.invalidate();
                  } catch (error: any) {
                    toast.error(error.message || "Erreur lors de la suppression");
                  }
                }
              }}
              disabled={selectedIds.length === 0}
              variant="destructive"
            >
              <Trash2 className="w-4 h-4 mr-2" />
              Supprimer ({selectedIds.length})
            </Button>
            <Button
              onClick={() => {
                if (confirm("Valider en BAP toutes les factures éligibles (score 100%, champs remplis, non abonnement) ? Les PDFs annotés seront générés automatiquement.")) {
                  validateBAPBulkMutation.mutate();
                }
              }}
              disabled={validateBAPBulkMutation.isPending}
              className="bg-green-700 hover:bg-green-800 text-white"
            >
              <ShieldCheck className="w-4 h-4 mr-2" />
              {validateBAPBulkMutation.isPending ? "Validation en cours..." : "Valider tout en BAP"}
            </Button>
            <Button
              onClick={() => {
                if (selectedIds.length === 0) {
                  toast.error("Veuillez sélectionner au moins une facture");
                  return;
                }
                if (confirm(`Relancer l'analyse IA et les automatismes sur ${selectedIds.length} facture(s) sélectionnée(s) ?\nCela peut prendre quelques secondes par facture.`)) {
                  reprocessMutation.mutate({ invoiceIds: selectedIds });
                }
              }}
              disabled={selectedIds.length === 0 || reprocessMutation.isPending}
              variant="outline"
              className="border-purple-500 text-purple-600 hover:bg-purple-50"
            >
              <RefreshCw className={`w-4 h-4 mr-2 ${reprocessMutation.isPending ? 'animate-spin' : ''}`} />
              {reprocessMutation.isPending ? `Retraitement...` : `Relancer (${selectedIds.length})`}
            </Button>
            <Button onClick={() => setLocation("/upload")}>
              <FileText className="w-4 h-4 mr-2" />
              Importer
            </Button>
          </div>
        </div>

        <Card>
          <CardContent className="pt-6">
            {/* Search */}
            <div className="mb-4">
              <div className="relative">
                <Search className="absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400 w-4 h-4" />
                <Input
                  placeholder="Rechercher par fournisseur ou numéro..."
                  value={searchQuery}
                  onChange={(e) => setSearchQuery(e.target.value)}
                  className="pl-10"
                />
              </div>
            </div>
            
            {/* Status Filters */}
            <div className="flex gap-2 mb-4">
              <Button
                variant={statusFilter === "all" ? "default" : "outline"}
                onClick={() => setStatusFilter("all")}
                size="sm"
              >
                Tous ({statusCounts.all})
              </Button>
              <Button
                variant={statusFilter === "exported" ? "default" : "outline"}
                onClick={() => setStatusFilter("exported")}
                size="sm"
                className={statusFilter === "exported" ? "bg-green-600 hover:bg-green-700" : ""}
              >
                Exportés ({statusCounts.exported})
              </Button>
              <Button
                variant={statusFilter === "not_exported" ? "default" : "outline"}
                onClick={() => setStatusFilter("not_exported")}
                size="sm"
                className={statusFilter === "not_exported" ? "bg-blue-600 hover:bg-blue-700" : ""}
              >
                Non exportés ({statusCounts.not_exported})
              </Button>
              <Button
                variant={statusFilter === "export_error" ? "default" : "outline"}
                onClick={() => setStatusFilter("export_error")}
                size="sm"
                className={statusFilter === "export_error" ? "bg-red-600 hover:bg-red-700" : ""}
              >
                Erreurs ({statusCounts.export_error})
              </Button>
            </div>

            {/* Table */}
            {isLoading ? (
              <div className="text-center py-8 text-gray-500">Chargement...</div>
            ) : filteredInvoices && filteredInvoices.length > 0 ? (
              <div className="border rounded-lg overflow-hidden">
                <Table>
                  <TableHeader>
                    <TableRow>
                      <TableHead className="w-12">
                        <Checkbox
                          checked={allEligibleSelected}
                          onCheckedChange={handleSelectAll}
                          title="Sélectionner toutes les factures exportables (Score 100% + champs remplis)"
                        />
                      </TableHead>
                      <TableHead>Fournisseur</TableHead>
                      <TableHead>N° Facture</TableHead>
                      <TableHead>Date</TableHead>
                      <TableHead>Montant</TableHead>
                      <TableHead>Service</TableHead>
                      <TableHead>Type achat</TableHead>
                      <TableHead>Ventilation</TableHead>
                      <TableHead>Score</TableHead>
                      <TableHead>Statut</TableHead>
                      <TableHead className="w-32">Actions</TableHead>
                    </TableRow>
                  </TableHeader>
                  <TableBody>
                    {filteredInvoices.map((invoice) => {
                      return (
                        <TableRow key={invoice.id}>
                          <TableCell>
                            <Checkbox
                              checked={selectedIds.includes(invoice.id)}
                              onCheckedChange={(checked) => handleSelectOne(invoice.id, checked as boolean)}
                              disabled={!isEligibleForExport(invoice)}
                              title={!isEligibleForExport(invoice) ? "Facture non exportable (score < 100% ou champs manquants)" : ""}
                            />
                          </TableCell>
                          <TableCell className="font-medium">
                            <button
                              onClick={() => setLocation(`/invoices/${invoice.id}`)}
                              className="text-blue-600 hover:text-blue-800 hover:underline"
                            >
                              {invoice.supplierName || "Inconnu"}
                            </button>
                          </TableCell>
                          <TableCell>{invoice.invoiceNumber || "-"}</TableCell>
                          <TableCell>
                            {invoice.invoiceDate
                              ? new Date(invoice.invoiceDate).toLocaleDateString("fr-FR")
                              : "-"}
                          </TableCell>
                          <TableCell>
                            {invoice.totalAmount
                              ? `${parseFloat(invoice.totalAmount as string).toFixed(2)} €`
                              : "-"}
                          </TableCell>
                          <TableCell className="text-sm">
                            <select
                              value={invoice.serviceConcerne || ""}
                              onChange={(e) => {
                                if (e.target.value === "__ADD_NEW__") {
                                  setPendingInvoiceId(invoice.id);
                                  setAddDialogType("service");
                                  setAddDialogOpen(true);
                                  e.target.value = invoice.serviceConcerne || "";
                                } else {
                                  // Remove field from autoFilledFields when manually edited
                                  const autoFilledFields = invoice.autoFilledFields ? JSON.parse(invoice.autoFilledFields) : [];
                                  const updatedAutoFields = autoFilledFields.filter((f: string) => f !== "serviceConcerne");
                                  const newVal = e.target.value || undefined;
                                  // Apprentissage : mémoriser la correction manuelle
                                  if (invoice.supplierName && newVal !== (invoice.serviceConcerne || undefined)) {
                                    upsertLearningMutation.mutate({
                                      supplierName: invoice.supplierName,
                                      fieldName: 'serviceConcerne',
                                      originalValue: invoice.serviceConcerne || undefined,
                                      correctedValue: newVal || '',
                                    });
                                  }
                                  updateFieldMutation.mutate({
                                    id: invoice.id,
                                    data: { 
                                      serviceConcerne: newVal,
                                      autoFilledFields: updatedAutoFields.length > 0 ? JSON.stringify(updatedAutoFields) : null
                                    },
                                  });
                                }
                              }}
                              className={`w-full px-2 py-1 border rounded text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 ${getFieldColor(invoice, "serviceConcerne")}`}
                            >
                              <option value="">-</option>
                              {departments?.map((dept) => (
                                <option key={dept.id} value={dept.name}>{dept.name}</option>
                              ))}
                              <option value="__ADD_NEW__" className="font-semibold text-blue-600">➜ Ajouter...</option>
                            </select>
                          </TableCell>
                          <TableCell className="text-sm">
                            <select
                              value={invoice.typeAchat || ""}
                              onChange={(e) => {
                                // Remove field from autoFilledFields when manually edited
                                const autoFilledFields = invoice.autoFilledFields ? JSON.parse(invoice.autoFilledFields) : [];
                                const updatedAutoFields = autoFilledFields.filter((f: string) => f !== "typeAchat");
                                const newTypeAchat = e.target.value as "CAPEX" | "OPEX" | undefined;
                                // Apprentissage : mémoriser la correction manuelle
                                if (invoice.supplierName && newTypeAchat !== (invoice.typeAchat || undefined)) {
                                  upsertLearningMutation.mutate({
                                    supplierName: invoice.supplierName,
                                    fieldName: 'typeAchat',
                                    originalValue: invoice.typeAchat || undefined,
                                    correctedValue: newTypeAchat || '',
                                  });
                                }
                                updateFieldMutation.mutate({
                                  id: invoice.id,
                                  data: { 
                                    typeAchat: newTypeAchat,
                                    autoFilledFields: updatedAutoFields.length > 0 ? JSON.stringify(updatedAutoFields) : null
                                  },
                                });
                              }}
                              className={`w-full px-2 py-1 border rounded text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 ${getFieldColor(invoice, "typeAchat")}`}
                            >
                              <option value="">-</option>
                              <option value="CAPEX">CAPEX</option>
                              <option value="OPEX">OPEX</option>
                            </select>
                          </TableCell>
                          <TableCell className="text-sm">
                            <select
                              value={invoice.ventilationComptable || ""}
                              onChange={(e) => {
                                if (e.target.value === "__ADD_NEW__") {
                                  setPendingInvoiceId(invoice.id);
                                  setAddDialogType("ventilation");
                                  setAddDialogOpen(true);
                                  e.target.value = invoice.ventilationComptable || "";
                                } else {
                                  // Remove field from autoFilledFields when manually edited
                                  const autoFilledFields = invoice.autoFilledFields ? JSON.parse(invoice.autoFilledFields) : [];
                                  const updatedAutoFields = autoFilledFields.filter((f: string) => f !== "ventilationComptable");
                                  const newVentil = e.target.value || undefined;
                                  // Apprentissage : mémoriser la correction manuelle
                                  if (invoice.supplierName && newVentil !== (invoice.ventilationComptable || undefined)) {
                                    upsertLearningMutation.mutate({
                                      supplierName: invoice.supplierName,
                                      fieldName: 'ventilationComptable',
                                      originalValue: invoice.ventilationComptable || undefined,
                                      correctedValue: newVentil || '',
                                    });
                                  }
                                  updateFieldMutation.mutate({
                                    id: invoice.id,
                                    data: { 
                                      ventilationComptable: newVentil,
                                      autoFilledFields: updatedAutoFields.length > 0 ? JSON.stringify(updatedAutoFields) : null
                                    },
                                  });
                                }
                              }}
                              className={`w-full px-2 py-1 border rounded text-sm focus:outline-none focus:ring-2 focus:ring-blue-500 ${getFieldColor(invoice, "ventilationComptable")}`}
                            >
                              <option value="">-</option>
                              {allocations?.map((alloc) => (
                                <option key={alloc.id} value={alloc.name}>{alloc.name}</option>
                              ))}
                              <option value="__ADD_NEW__" className="font-semibold text-blue-600">➜ Ajouter...</option>
                            </select>
                          </TableCell>
                          <TableCell>
                            <div className="flex items-center gap-2">
                              {getQualityBadge(invoice.qualityScore)}
                              {isEligibleForExport(invoice) && (
                                <div title="Facture exportable">
                                  <CheckCircle className="h-4 w-4 text-green-600" />
                                </div>
                              )}
                            </div>
                          </TableCell>
                          <TableCell>{getExportStatusBadge(invoice.exportStatus || "not_exported")}</TableCell>
                          <TableCell>
                            <div className="flex gap-1">
                              <Button
                                size="sm"
                                variant="outline"
                                onClick={() => {
                                  setSelectedInvoiceText(invoice.extractedText || "Aucun texte extrait disponible");
                                  setTextDialogOpen(true);
                                }}
                                className="h-8 px-2"
                                title="Voir le texte extrait"
                              >
                                <FileText className="h-4 w-4" />
                              </Button>
                              <Button
                                size="sm"
                                variant="outline"
                                onClick={() => setLocation(`/invoices/${invoice.id}`)}
                                className="h-8 px-2"
                                title="Modifier"
                              >
                                <Edit className="h-4 w-4" />
                              </Button>
                              <Button
                                size="sm"
                                variant="outline"
                                onClick={() => {
                                  setInvoiceToDelete(invoice.id);
                                  setDeleteDialogOpen(true);
                                }}
                                className="h-8 px-2 text-red-600 hover:text-red-700 hover:bg-red-50"
                                title="Supprimer"
                              >
                                <Trash className="h-4 w-4" />
                              </Button>
                              {invoice.bapValidated === 1 ? (
                                <div className="flex gap-1 items-center">
                                  <div
                                    className="h-8 px-2 flex items-center justify-center rounded border border-green-300 bg-green-50 text-green-700 text-xs font-semibold gap-1"
                                    title={`Validé BAP le ${invoice.bapValidatedAt ? new Date(invoice.bapValidatedAt).toLocaleDateString('fr-FR') : ''}`}
                                  >
                                    <CheckCircle2 className="h-4 w-4" />
                                    <span>Validé</span>
                                  </div>
                                  {bapPdfUrls[invoice.id] && (
                                    <Button
                                      size="sm"
                                      variant="outline"
                                      className="h-8 px-2 text-blue-600 border-blue-300 hover:bg-blue-50"
                                      title="Télécharger le PDF annoté BAP"
                                      onClick={() => downloadBapPdf(bapPdfUrls[invoice.id], invoice.supplierName || undefined, invoice.invoiceNumber, invoice.bapValidatedAt)}
                                    >
                                      <Download className="h-4 w-4" />
                                    </Button>
                                  )}
                                </div>
                              ) : (
                                <Button
                                  size="sm"
                                  variant="outline"
                                  onClick={() => validateBAPMutation.mutate({ id: invoice.id })}
                                  disabled={!isEligibleForBAPValidation(invoice) || validateBAPMutation.isPending}
                                  className={`h-8 px-2 gap-1 ${
                                    isEligibleForBAPValidation(invoice)
                                      ? "text-emerald-700 border-emerald-400 hover:bg-emerald-50 hover:border-emerald-500"
                                      : "text-gray-400 border-gray-200 cursor-not-allowed opacity-50"
                                  }`}
                                  title={getBAPValidationTooltip(invoice)}
                                >
                                  <CheckCircle2 className="h-4 w-4" />
                                  <span className="text-xs">BAP</span>
                                </Button>
                              )}
                            </div>
                          </TableCell>
                        </TableRow>
                      );
                    })}
                  </TableBody>
                </Table>
              </div>
            ) : (
              <div className="text-center py-12">
                <FileText className="w-12 h-12 mx-auto mb-3 text-gray-300" />
                <p className="text-gray-500">Aucune facture trouvée</p>
                <p className="text-sm text-gray-400 mt-1">
                  {searchQuery ? "Essayez une autre recherche" : "Commencez par importer un fichier PDF"}
                </p>
              </div>
            )}
          </CardContent>
        </Card>

        {/* Info message */}
        {filteredInvoices && filteredInvoices.some(inv => (inv.qualityScore || 0) < 100) && (
          <div className="bg-blue-50 border border-blue-200 rounded-lg p-4">
            <p className="text-sm text-blue-800">
              <strong>Note :</strong> Seules les factures avec un score de qualité de 100% peuvent être exportées.
              Les factures avec un score inférieur sont grisées et ne peuvent pas être sélectionnées.
            </p>
          </div>
        )}
      </div>

      {/* Delete Confirmation Dialog */}
      <AlertDialog open={deleteDialogOpen} onOpenChange={setDeleteDialogOpen}>
        <AlertDialogContent>
          <AlertDialogHeader>
            <AlertDialogTitle>Êtes-vous sûr de vouloir supprimer cette facture ?</AlertDialogTitle>
            <AlertDialogDescription>
              Cette action est irréversible. La facture sera définitivement supprimée de la base de données.
            </AlertDialogDescription>
          </AlertDialogHeader>
          <AlertDialogFooter>
            <AlertDialogCancel onClick={() => setInvoiceToDelete(null)}>Annuler</AlertDialogCancel>
            <AlertDialogAction
              onClick={() => {
                if (invoiceToDelete) {
                  deleteMutation.mutate({ id: invoiceToDelete });
                }
              }}
              className="bg-red-600 hover:bg-red-700"
            >
              Supprimer
            </AlertDialogAction>
          </AlertDialogFooter>
        </AlertDialogContent>
      </AlertDialog>

      {/* Add New Item Dialog */}
      <Dialog open={addDialogOpen} onOpenChange={setAddDialogOpen}>
        <DialogContent>
          <DialogHeader>
            <DialogTitle>
              Ajouter {addDialogType === "service" ? "un nouveau service" : "une nouvelle ventilation"}
            </DialogTitle>
            <DialogDescription>
              Entrez le nom {addDialogType === "service" ? "du service" : "de la ventilation comptable"} à ajouter.
            </DialogDescription>
          </DialogHeader>
          <div className="py-4">
            <Input
              placeholder="Nom..."
              value={newItemName}
              onChange={(e) => setNewItemName(e.target.value)}
              onKeyDown={(e) => {
                if (e.key === "Enter") {
                  handleAddNewItem();
                }
              }}
              autoFocus
            />
          </div>
          <DialogFooter>
            <Button
              variant="outline"
              onClick={() => {
                setAddDialogOpen(false);
                setNewItemName("");
                setPendingInvoiceId(null);
              }}
            >
              Annuler
            </Button>
            <Button onClick={handleAddNewItem}>Ajouter</Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>

      {/* Extracted Text Dialog */}
      <Dialog open={textDialogOpen} onOpenChange={setTextDialogOpen}>
        <DialogContent className="max-w-3xl max-h-[80vh]">
          <DialogHeader>
            <DialogTitle>Texte extrait de la facture</DialogTitle>
            <DialogDescription>
              Texte complet extrait du PDF lors de l'import
            </DialogDescription>
          </DialogHeader>
          <div className="overflow-y-auto max-h-[60vh] p-4 bg-gray-50 rounded border">
            <pre className="whitespace-pre-wrap text-sm font-mono">{selectedInvoiceText}</pre>
          </div>
          <DialogFooter>
            <Button onClick={() => setTextDialogOpen(false)}>Fermer</Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>
    </DashboardLayout>
  );
}