import { useState, useCallback, useRef, useMemo } from "react";
import { useQuery, useMutation } from "@tanstack/react-query";
import { useLocation } from "wouter";
import { Send, Sparkles, Image as ImageIcon, Calendar, Upload, Camera, GripVertical, Loader2 } from "lucide-react";
import { useDropzone } from "react-dropzone";
import {
  DndContext,
  closestCenter,
  KeyboardSensor,
  PointerSensor,
  useSensor,
  useSensors,
  DragEndEvent,
} from "@dnd-kit/core";
import {
  arrayMove,
  SortableContext,
  sortableKeyboardCoordinates,
  rectSortingStrategy,
  useSortable,
} from "@dnd-kit/sortable";
import { CSS } from "@dnd-kit/utilities";
import Sidebar from "@/components/sidebar";
import TopBar from "@/components/topbar";
import { Button } from "@/components/ui/button";
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import { Textarea } from "@/components/ui/textarea";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";
import { Checkbox } from "@/components/ui/checkbox";
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
import { Dialog, DialogContent } from "@/components/ui/dialog";
import { useToast } from "@/hooks/use-toast";
import { apiRequest, queryClient, handleUnauthorized, getErrorMessage } from "@/lib/queryClient";
import { MediaThumbnail } from "@/components/media-thumbnail";
import type { SocialPage, Media, ScheduledPost } from "@shared/schema";
import { PreviewModal } from "@/components/preview-modal";
import { DateTimePicker } from "@/components/datetime-picker";

function SortableMediaItem({
  media,
  index,
  isSelected,
  onToggle
}: {
  media: Media;
  index: number;
  isSelected: boolean;
  onToggle: () => void;
}) {
  const {
    attributes,
    listeners,
    setNodeRef,
    transform,
    transition,
  } = useSortable({ id: media.id });

  const style = {
    transform: CSS.Transform.toString(transform),
    transition,
  };

  const isVideo = media.type === 'video';

  return (
    <div
      ref={setNodeRef}
      style={style}
      className={`relative aspect-square rounded-lg overflow-hidden border-2 transition-all ${isSelected
          ? 'border-primary ring-2 ring-primary'
          : 'border-transparent hover:border-muted-foreground'
        }`}
    >
      <button
        onClick={onToggle}
        className="w-full h-full"
        data-testid={`button-select-media-${media.id}`}
      >
        <MediaThumbnail
          src={media.facebookFeedUrl || media.originalUrl}
          alt={media.fileName}
          thumbnailUrl={media.thumbnailUrl ?? undefined}
          type={isVideo ? 'video' : 'image'}
        />
      </button>
      {isSelected && (
        <>
          <div className="absolute top-1 right-1 w-6 h-6 bg-primary text-primary-foreground rounded-full flex items-center justify-center text-xs font-bold">
            {index + 1}
          </div>
          <div
            {...attributes}
            {...listeners}
            className="absolute top-1 left-1 w-8 h-8 bg-black/50 rounded-full flex items-center justify-center cursor-move hover:bg-black/70 transition-colors"
          >
            <GripVertical className="w-4 h-4 text-white" />
          </div>
        </>
      )}
    </div>
  );
}

/** Nombre de médias récents proposés à la sélection. */
const RECENT_MEDIA_COUNT = 12;

/** Minuit, pour que la clé de requête reste stable d'un rendu à l'autre. */
function startOfToday(): Date {
  const date = new Date();
  date.setHours(0, 0, 0, 0);
  return date;
}

export default function NewPost() {
  const [sidebarOpen, setSidebarOpen] = useState(false);
  const [, navigate] = useLocation();
  const { toast } = useToast();
  const cameraInputRef = useRef<HTMLInputElement>(null);

  const [productInfo, setProductInfo] = useState('');
  const [selectedMedia, setSelectedMedia] = useState<string[]>([]);
  const [selectedPages, setSelectedPages] = useState<string[]>([]);
  const [scheduledDate, setScheduledDate] = useState<Date | undefined>(undefined);
  const [generatedVariants, setGeneratedVariants] = useState<any[]>([]);
  const [postText, setPostText] = useState('');
  const [postType, setPostType] = useState<'feed' | 'story' | 'both'>('feed');
  const [previewModalOpen, setPreviewModalOpen] = useState(false);

  // Ce composeur gère les publications feed/story : TikTok n'accepte que des
  // vidéos et se pilote depuis la création de reel.
  const { data: allPages = [] } = useQuery<SocialPage[]>({
    queryKey: ['/api/pages'],
  });
  const pages = allPages.filter(p => p.platform !== 'tiktok');

  // Seuls les douze derniers médias sont proposés ici : autant ne demander
  // que ceux-là plutôt que toute la médiathèque.
  const { data: allMedia = [] } = useQuery<Media[]>({
    queryKey: ['/api/media', { limit: RECENT_MEDIA_COUNT }],
  });

  // Afficher seulement les 12 derniers médias triés par date décroissante
  // Utilisation de useMemo pour éviter de re-trier à chaque render
  // Création d'une copie pour ne pas muter le cache React Query
  const mediaList = useMemo(() => {
    return [...allMedia]
      .sort((a, b) => {
        const dateA = a.createdAt ? new Date(a.createdAt).getTime() : 0;
        const dateB = b.createdAt ? new Date(b.createdAt).getTime() : 0;
        return dateB - dateA; // Tri décroissant (plus récent en premier)
      })
      .slice(0, RECENT_MEDIA_COUNT);
  }, [allMedia]);

  // Ne sert qu'à griser les créneaux déjà pris dans le sélecteur de date : le
  // passé n'a aucune influence sur une planification à venir.
  const { data: scheduledPosts = [] } = useQuery<ScheduledPost[]>({
    queryKey: ['/api/scheduled-posts', { startDate: startOfToday().toISOString() }],
  });

  const uploadMutation = useMutation({
    mutationFn: async (file: File) => {
      const formData = new FormData();
      formData.append("file", file);
      const response = await fetch("/api/media/upload", {
        method: "POST",
        body: formData,
        credentials: "include",
      });
      if (!response.ok) {
        if (response.status === 401) handleUnauthorized("/api/media/upload");
        throw new Error("Upload failed");
      }
      return response.json();
    },
    onSuccess: (data) => {
      queryClient.invalidateQueries({ queryKey: ["/api/media"] });
      // Add to selected media array if not already at max (10)
      setSelectedMedia(prev => {
        if (prev.length >= 10) {
          toast({
            title: "Limite atteinte",
            description: "Maximum 10 photos par publication",
            variant: "destructive",
          });
          return prev;
        }
        return [...prev, data.id];
      });
      toast({
        title: "Succès",
        description: "Photo téléchargée avec succès",
      });
    },
    onError: () => {
      toast({
        title: "Erreur",
        description: "Impossible de télécharger la photo",
        variant: "destructive",
      });
    },
  });

  const onDrop = useCallback((acceptedFiles: File[]) => {
    if (acceptedFiles.length > 0) {
      uploadMutation.mutate(acceptedFiles[0]);
    }
  }, []);

  const { getRootProps, getInputProps, isDragActive, open } = useDropzone({
    onDrop,
    accept: {
      "image/*": [".png", ".jpg", ".jpeg", ".gif", ".webp"],
      "video/*": [".mp4", ".mov", ".webm", ".3gp", ".3gpp", ".mkv", ".avi"],
    },
    maxSize: 52428800,
    noClick: true,
    noKeyboard: true,
  });

  const generateTextMutation = useMutation({
    mutationFn: async (productInfoText: string) => {
      const productInfo = {
        name: productInfoText.match(/Produit:\s*(.+?)(?:\n|$)/i)?.[1] ||
          productInfoText.match(/Nom:\s*(.+?)(?:\n|$)/i)?.[1] ||
          productInfoText,
        price: productInfoText.match(/Prix:\s*(.+?)(?:\n|$)/i)?.[1] || "",
        description: productInfoText.match(/Description:\s*(.+?)(?:\n|$)/i)?.[1] || "",
        features: productInfoText.match(/Caractéristiques:\s*(.+?)(?:\n|$)/i)?.[1]?.split(",") || [],
      };
      const response = await apiRequest('POST', '/api/ai/generate', productInfo);
      return response.json();
    },
    onSuccess: (data: any) => {
      const variants = data.variants || [];
      setGeneratedVariants(variants);
      toast({
        title: "Texte généré",
        description: `${variants.length} variations créées`,
      });
      queryClient.invalidateQueries({ queryKey: ['/api/ai/generations'] });
    },
    onError: (error: unknown) => {
      toast({
        title: "Erreur",
        description: getErrorMessage(error, "Impossible de générer le texte"),
        variant: "destructive",
      });
    },
  });

  const createPostMutation = useMutation({
    mutationFn: (data: any) =>
      apiRequest('POST', '/api/posts', data),
    onSuccess: async () => {
      await queryClient.invalidateQueries({ queryKey: ['/api/scheduled-posts'], refetchType: 'all' });
      toast({
        title: "Publication créée",
        description: "La publication a été créée avec succès",
      });
      navigate('/');
    },
    onError: () => {
      toast({
        title: "Erreur",
        description: "Impossible de créer la publication",
        variant: "destructive",
      });
    },
  });

  const handleGenerateText = () => {
    if (!productInfo.trim()) {
      toast({
        title: "Information manquante",
        description: "Veuillez saisir les informations du produit",
        variant: "destructive",
      });
      return;
    }
    generateTextMutation.mutate(productInfo);
  };

  const handleCreatePost = () => {
    // Le texte est facultatif si au moins un média est présent
    if (!postText.trim() && selectedMedia.length === 0) {
      toast({
        title: "Contenu requis",
        description: "Veuillez saisir du texte ou sélectionner un média",
        variant: "destructive",
      });
      return;
    }

    if (selectedPages.length === 0) {
      toast({
        title: "Page requise",
        description: "Veuillez sélectionner au moins une page",
        variant: "destructive",
      });
      return;
    }

    if ((postType === 'story' || postType === 'both') && selectedMedia.length === 0) {
      toast({
        title: "Média requis",
        description: "Les stories nécessitent au moins une image ou vidéo",
        variant: "destructive",
      });
      return;
    }

    createPostMutation.mutate({
      content: postText,
      scheduledFor: scheduledDate ? scheduledDate.toISOString() : undefined,
      mediaIds: selectedMedia.length > 0 ? selectedMedia : undefined,
      pageIds: selectedPages,
      postType,
    });
  };

  const handleUseVariant = (text: string) => {
    setPostText(text);
    toast({
      title: "Texte sélectionné",
      description: "Le texte a été ajouté à votre publication",
    });
  };

  const handleCameraCapture = (e: React.ChangeEvent<HTMLInputElement>) => {
    const file = e.target.files?.[0];
    if (file) {
      // Logs de diagnostic pour Android
      console.log('📹 Capture camera détectée:', {
        nom: file.name,
        type: file.type,
        taille: `${(file.size / 1024 / 1024).toFixed(2)} MB`,
        estVideo: file.type.startsWith('video/')
      });

      // Correction Android : créer un nom valide si le fichier n'a pas de nom
      let fileToUpload = file;
      if (!file.name || file.name === 'blob' || file.name === '') {
        const extension = file.type.split('/')[1] || 'jpg';
        const newFileName = `camera-${Date.now()}.${extension}`;
        fileToUpload = new File([file], newFileName, { type: file.type });
        console.log('✅ Nom de fichier corrigé:', newFileName);
      }

      // Vérification taille (50 MB max)
      if (file.size > 52428800) {
        toast({
          title: "Fichier trop volumineux",
          description: `La taille maximale est de 50 MB. Votre fichier fait ${(file.size / 1024 / 1024).toFixed(2)} MB`,
          variant: "destructive",
        });
        console.error('❌ Fichier rejeté: trop volumineux');
        e.target.value = '';
        return;
      }

      uploadMutation.mutate(fileToUpload);
      e.target.value = '';
    }
  };

  const sensors = useSensors(
    useSensor(PointerSensor),
    useSensor(KeyboardSensor, {
      coordinateGetter: sortableKeyboardCoordinates,
    })
  );

  const handleDragEnd = (event: DragEndEvent) => {
    const { active, over } = event;

    if (over && active.id !== over.id) {
      setSelectedMedia((items) => {
        const oldIndex = items.indexOf(active.id as string);
        const newIndex = items.indexOf(over.id as string);
        return arrayMove(items, oldIndex, newIndex);
      });
    }
  };

  return (
    <div className="flex h-screen overflow-hidden bg-background">
      {sidebarOpen && (
        <div
          className="fixed inset-0 bg-black/50 z-40 lg:hidden"
          onClick={() => setSidebarOpen(false)}
        />
      )}

      <div className={`
        fixed lg:static inset-y-0 left-0 z-50 transform transition-transform duration-300 ease-in-out
        ${sidebarOpen ? 'translate-x-0' : '-translate-x-full lg:translate-x-0'}
      `}>
        <Sidebar onLinkClick={() => setSidebarOpen(false)} />
      </div>

      <main className="flex-1 overflow-y-auto">
        <TopBar onMenuClick={() => setSidebarOpen(!sidebarOpen)} />

        <div className="p-4 sm:p-6 lg:p-8 max-w-6xl mx-auto">
          <div className="mb-8">
            <h1 className="text-3xl font-bold text-foreground">Nouvelle publication</h1>
            <p className="text-muted-foreground mt-2">
              Créez et planifiez une nouvelle publication
            </p>
          </div>

          <div className="grid grid-cols-1 lg:grid-cols-2 gap-4 sm:gap-6 lg:gap-8">
            <div className="space-y-8">
              <Card className="rounded-2xl border-border/50 shadow-lg">
                <CardHeader className="p-6">
                  <div className="flex items-center justify-between">
                    <div>
                      <CardTitle>Média</CardTitle>
                      <CardDescription>Sélectionnez ou uploadez une image/vidéo</CardDescription>
                    </div>
                    <div className="flex gap-2">
                      <Button
                        onClick={() => cameraInputRef.current?.click()}
                        disabled={uploadMutation.isPending}
                        size="sm"
                        variant="outline"
                        className="lg:hidden"
                        data-testid="button-camera-capture"
                      >
                        <Camera className="w-4 h-4" />
                      </Button>
                      <Button
                        onClick={open}
                        disabled={uploadMutation.isPending}
                        size="sm"
                        variant="outline"
                        data-testid="button-upload-new-media"
                      >
                        <Upload className="w-4 h-4 mr-2" />
                        {uploadMutation.isPending ? 'Upload...' : 'Uploader'}
                      </Button>
                    </div>
                  </div>
                </CardHeader>
                <CardContent>
                  <input
                    ref={cameraInputRef}
                    type="file"
                    accept="image/*,video/*"
                    capture="environment"
                    onChange={handleCameraCapture}
                    className="hidden"
                  />
                  <div {...getRootProps()} className={`${isDragActive ? 'bg-primary/5 border-primary' : ''}`}>
                    <input {...getInputProps()} />
                    {mediaList.length === 0 ? (
                      <div className="text-center py-8 border-2 border-dashed rounded-lg">
                        <ImageIcon className="w-12 h-12 mx-auto text-muted-foreground mb-2" />
                        <p className="text-muted-foreground mb-2">
                          {isDragActive ? "Déposez votre photo ici" : "Aucun média disponible"}
                        </p>
                        <div className="flex gap-2 justify-center">
                          <Button
                            onClick={() => cameraInputRef.current?.click()}
                            disabled={uploadMutation.isPending}
                            size="sm"
                            variant="outline"
                            className="lg:hidden"
                            data-testid="button-camera-first"
                          >
                            <Camera className="w-4 h-4 mr-2" />
                            Prendre une photo
                          </Button>
                          <Button
                            onClick={open}
                            disabled={uploadMutation.isPending}
                            size="sm"
                            data-testid="button-upload-first-media"
                          >
                            <Upload className="w-4 h-4 mr-2" />
                            Uploader une photo
                          </Button>
                        </div>
                      </div>
                    ) : (
                      <>
                        {selectedMedia.length > 0 && (
                          <div className="mb-4">
                            <div className="text-sm font-medium text-muted-foreground mb-2">
                              Photos sélectionnées ({selectedMedia.length}/10)
                            </div>
                            <DndContext
                              sensors={sensors}
                              collisionDetection={closestCenter}
                              onDragEnd={handleDragEnd}
                            >
                              <SortableContext
                                items={selectedMedia}
                                strategy={rectSortingStrategy}
                              >
                                <div className="grid grid-cols-3 gap-2 p-3 bg-accent/20 rounded-lg border border-accent">
                                  {selectedMedia.map((mediaId, index) => {
                                    const media = mediaList.find(m => m.id === mediaId);
                                    if (!media) return null;

                                    return (
                                      <SortableMediaItem
                                        key={media.id}
                                        media={media}
                                        index={index}
                                        isSelected={true}
                                        onToggle={() => {
                                          setSelectedMedia(prev => prev.filter(id => id !== media.id));
                                        }}
                                      />
                                    );
                                  })}
                                </div>
                              </SortableContext>
                            </DndContext>
                          </div>
                        )}
                        <div className="text-sm font-medium text-muted-foreground mb-2">
                          Toutes les photos ({mediaList.length})
                        </div>
                        <div className="max-h-[500px] overflow-y-auto">
                          <div className="grid grid-cols-2 sm:grid-cols-3 gap-2">
                            {mediaList.map((media) => {
                              const isSelected = selectedMedia.includes(media.id);
                              const isVideo = media.type === 'video';

                              return (
                                <button
                                  key={media.id}
                                  onClick={() => {
                                    if (isSelected) {
                                      // Remove from selection
                                      setSelectedMedia(prev => prev.filter(id => id !== media.id));
                                    } else if (selectedMedia.length < 10) {
                                      // Add to selection (max 10)
                                      setSelectedMedia(prev => [...prev, media.id]);
                                    } else {
                                      toast({
                                        title: "Limite atteinte",
                                        description: "Maximum 10 photos par publication",
                                        variant: "destructive",
                                      });
                                    }
                                  }}
                                  className={`relative aspect-square rounded-lg overflow-hidden border-2 transition-all ${isSelected
                                      ? 'border-primary ring-2 ring-primary opacity-50'
                                      : 'border-transparent hover:border-muted-foreground'
                                    }`}
                                  data-testid={`button-select-media-${media.id}`}
                                >
                                  <MediaThumbnail
                                    src={media.facebookFeedUrl || media.originalUrl}
                                    alt={media.fileName}
                                    thumbnailUrl={media.thumbnailUrl ?? undefined}
                                    type={isVideo ? 'video' : 'image'}
                                  />
                                  {isSelected && (
                                    <div className="absolute inset-0 bg-primary/10 flex items-center justify-center">
                                      <div className="text-xs font-semibold text-primary">Sélectionnée</div>
                                    </div>
                                  )}
                                </button>
                              );
                            })}
                          </div>
                        </div>
                      </>
                    )}
                  </div>
                </CardContent>
              </Card>

              <Card className="rounded-2xl border-border/50 shadow-lg">
                <CardHeader className="p-6">
                  <CardTitle>Contenu</CardTitle>
                  <CardDescription>Informations du produit ou message</CardDescription>
                </CardHeader>
                <CardContent className="space-y-4">
                  <div>
                    <Label htmlFor="productInfo">Informations du produit</Label>
                    <Textarea
                      id="productInfo"
                      value={productInfo}
                      onChange={(e) => setProductInfo(e.target.value)}
                      placeholder="Décrivez votre produit : nom, caractéristiques, prix, etc."
                      rows={6}
                      data-testid="input-product-info"
                    />
                  </div>
                  <Button
                    onClick={handleGenerateText}
                    disabled={generateTextMutation.isPending}
                    className="w-full"
                    data-testid="button-generate-text"
                  >
                    <Sparkles className="w-4 h-4 mr-2" />
                    {generateTextMutation.isPending ? 'Génération...' : 'Générer le texte IA'}
                  </Button>
                </CardContent>
              </Card>

              {generatedVariants.length > 0 && (
                <Card className="rounded-2xl border-border/50 shadow-lg">
                  <CardHeader className="p-6">
                    <CardTitle>Variations générées par l'IA</CardTitle>
                    <CardDescription>Cliquez sur "Utiliser" pour remplir le texte ci-dessous</CardDescription>
                  </CardHeader>
                  <CardContent className="space-y-3">
                    {generatedVariants.map((variant, index) => (
                      <div
                        key={index}
                        className="p-4 rounded-lg border bg-card hover:bg-accent/50 transition-colors"
                      >
                        <div className="flex items-start justify-between gap-3">
                          <div className="flex-1">
                            <div className="text-xs font-semibold text-muted-foreground mb-2">
                              {variant.variant || `Version ${index + 1}`}
                            </div>
                            <p className="text-sm leading-relaxed whitespace-pre-wrap">
                              {variant.text}
                            </p>
                          </div>
                          <Button
                            size="sm"
                            onClick={() => handleUseVariant(variant.text)}
                            data-testid={`button-use-variant-${index}`}
                          >
                            Utiliser
                          </Button>
                        </div>
                      </div>
                    ))}
                  </CardContent>
                </Card>
              )}

              <Card className="rounded-2xl border-border/50 shadow-lg">
                <CardHeader className="p-6">
                  <CardTitle>Texte de la publication</CardTitle>
                  <CardDescription>Écrivez ou générez le texte de votre publication</CardDescription>
                </CardHeader>
                <CardContent>
                  <Textarea
                    value={postText}
                    onChange={(e) => setPostText(e.target.value)}
                    placeholder="Écrivez votre texte ici ou générez-le avec l'IA..."
                    rows={8}
                    data-testid="textarea-post-text"
                  />
                </CardContent>
              </Card>
            </div>

            <div className="space-y-8">
              <Card className="rounded-2xl border-border/50 shadow-lg">
                <CardHeader className="p-6">
                  <CardTitle>Pages cibles</CardTitle>
                  <CardDescription>Sélectionnez les pages où publier</CardDescription>
                </CardHeader>
                <CardContent>
                  {pages.length === 0 ? (
                    <div className="text-center py-8">
                      <p className="text-muted-foreground mb-2">Aucune page connectée</p>
                      <Button
                        variant="link"
                        onClick={() => navigate('/pages')}
                        data-testid="link-add-pages"
                      >
                        Ajouter des pages
                      </Button>
                    </div>
                  ) : (
                    <div className="space-y-3">
                      {pages.map((page) => (
                        <div key={page.id} className="flex items-center space-x-2">
                          <Checkbox
                            id={`page-${page.id}`}
                            checked={selectedPages.includes(page.id)}
                            onCheckedChange={(checked) => {
                              if (checked) {
                                setSelectedPages([...selectedPages, page.id]);
                              } else {
                                setSelectedPages(selectedPages.filter(id => id !== page.id));
                              }
                            }}
                            data-testid={`checkbox-page-${page.id}`}
                          />
                          <label
                            htmlFor={`page-${page.id}`}
                            className="text-sm font-medium leading-none peer-disabled:cursor-not-allowed peer-disabled:opacity-70 flex-1"
                          >
                            {page.pageName} ({page.platform})
                          </label>
                        </div>
                      ))}
                    </div>
                  )}
                </CardContent>
              </Card>

              <Card className="rounded-2xl border-border/50 shadow-lg">
                <CardHeader className="p-6">
                  <CardTitle>Type de publication</CardTitle>
                  <CardDescription>Choisissez où publier</CardDescription>
                </CardHeader>
                <CardContent>
                  <div className="space-y-2">
                    <Label htmlFor="postType">Format</Label>
                    <Select value={postType} onValueChange={(value: 'feed' | 'story' | 'both') => setPostType(value)}>
                      <SelectTrigger id="postType" data-testid="select-post-type">
                        <SelectValue />
                      </SelectTrigger>
                      <SelectContent>
                        <SelectItem value="feed" data-testid="option-feed">Feed uniquement</SelectItem>
                        <SelectItem value="story" data-testid="option-story">Story uniquement</SelectItem>
                        <SelectItem value="both" data-testid="option-both">Feed + Story</SelectItem>
                      </SelectContent>
                    </Select>
                    <p className="text-xs text-muted-foreground">
                      {postType === 'feed' && 'Publication classique dans le fil d\'actualité'}
                      {postType === 'story' && 'Story éphémère (24h) - Nécessite un média'}
                      {postType === 'both' && 'Publie à la fois dans le feed et en story - Nécessite un média'}
                    </p>
                  </div>
                </CardContent>
              </Card>

              <Card className="rounded-2xl border-border/50 shadow-lg">
                <CardHeader className="p-6">
                  <CardTitle>Planification</CardTitle>
                  <CardDescription>Programmez la publication (optionnel)</CardDescription>
                </CardHeader>
                <CardContent>
                  <div className="space-y-3">
                    <Label>Date et heure</Label>
                    <DateTimePicker
                      value={scheduledDate}
                      onChange={setScheduledDate}
                      occupiedDates={scheduledPosts
                        .filter(post => post.scheduledAt)
                        .map(post => new Date(post.scheduledAt!))}
                      placeholder="Publier immédiatement"
                    />
                    <p className="text-xs text-muted-foreground">
                      Sélectionnez une date pour planifier, sinon publication immédiate
                    </p>
                  </div>
                </CardContent>
              </Card>

              <Button
                onClick={() => setPreviewModalOpen(true)}
                disabled={createPostMutation.isPending}
                className="w-full bg-gradient-to-r from-primary to-secondary hover:opacity-90 shadow-lg"
                size="lg"
                data-testid="button-preview-post"
              >
                <Send className="w-4 h-4 mr-2" />
                Prévisualiser et publier
              </Button>
            </div>
          </div>
        </div>
      </main>

      <Dialog open={uploadMutation.isPending}>
        <DialogContent className="sm:max-w-md [&>button]:hidden">
          <div className="flex flex-col items-center justify-center py-8">
            <div className="w-20 h-20 rounded-full bg-primary/10 flex items-center justify-center mb-6">
              <Loader2 className="w-10 h-10 text-primary animate-spin" />
            </div>
            <h3 className="text-xl font-semibold text-foreground mb-2">
              Upload en cours...
            </h3>
            <p className="text-sm text-muted-foreground text-center">
              Votre image est en cours de téléchargement et de traitement.
              <br />
              Veuillez patienter.
            </p>
          </div>
        </DialogContent>
      </Dialog>

      <PreviewModal
        open={previewModalOpen}
        onOpenChange={setPreviewModalOpen}
        postText={postText}
        selectedMedia={selectedMedia}
        mediaList={mediaList}
        onPublish={handleCreatePost}
        isPublishing={createPostMutation.isPending}
      />
    </div>
  );
}