import { useState, useEffect } from "react";
import { X, Image, MousePointerClick } from "lucide-react";
import { Dialog, DialogContent, DialogHeader, DialogTitle } from "@/components/ui/dialog";
import { Button } from "@/components/ui/button";
import { cn } from "@/lib/utils";
import type { Creative } from "@/lib/types/api";

interface CreativeMediaItem {
  media_type: string;
  media_file_id: string;
  position: number;
  s3_url?: string | null;
}

interface CreativeButton {
  text: string;
  url: string;
}

interface CreativeSelectDialogProps {
  open: boolean;
  onOpenChange: (open: boolean) => void;
  creatives: {
    id: string;
    name: string;
    text: string;
    media_items: CreativeMediaItem[];
    buttons: CreativeButton[];
  }[];
  onSelect: (creative: { id: string; name: string; thumbnail_url?: string | null }) => void;
  onClear: (() => void) | null;
  currentCreativeId: string | null | undefined;
}

function CreativeCard({
  creative,
  isSelected,
  onClick,
}: {
  creative: {
    id: string;
    name: string;
    text: string;
    media_items: CreativeMediaItem[];
    buttons: CreativeButton[];
  };
  isSelected: boolean;
  onClick: () => void;
}) {
  const thumbnailUrl = creative.media_items?.[0]?.s3_url;
  const imagesCount = creative.media_items?.length || 0;
  const buttonsCount = creative.buttons?.length || 0;
  
  const cleanText = creative.text?.replace(/<[^>]+>/g, '') || '';
  const truncatedText = cleanText.substring(0, 80) + (cleanText.length > 80 ? '...' : '');

  return (
    <div
      className={cn(
        "flex items-start gap-3 p-3 rounded-lg border cursor-pointer transition-all",
        isSelected
          ? "border-primary bg-primary/5 ring-1 ring-primary"
          : "hover:bg-muted hover:border-muted-foreground/30"
      )}
      onClick={onClick}
    >
      
        {thumbnailUrl ? (
          <div className="w-14 h-14 rounded-lg bg-muted flex items-center justify-center overflow-hidden shrink-0">
          <img
            src={thumbnailUrl}
            alt=""
            className="w-full h-full object-cover"
          />
      </div>
        ) : (
          <></>
        )}
      
      <div className="flex-1 min-w-0 space-y-1.5">
        <div className="flex items-center gap-2">
          {imagesCount > 0 && (
            <span className="flex items-center gap-1 text-xs text-muted-foreground bg-muted px-1.5 py-0.5 rounded">
              <Image className="h-3 w-3" />
              {imagesCount}
            </span>
          )}
          {buttonsCount > 0 && (
            <span className="flex items-center gap-1 text-xs text-muted-foreground bg-muted px-1.5 py-0.5 rounded">
              <MousePointerClick className="h-3 w-3" />
              {buttonsCount}
            </span>
          )}
        </div>
        
        <p className="text-sm text-foreground line-clamp-2 leading-snug">
          {truncatedText || 'Без текста'}
        </p>
      </div>
    </div>
  );
}

export function CreativeSelectDialog({
  open,
  onOpenChange,
  creatives,
  onSelect,
  onClear,
  currentCreativeId,
}: CreativeSelectDialogProps) {
  return (
    <Dialog open={open} onOpenChange={onOpenChange}>
      <DialogContent className="max-w-lg max-h-[85vh] flex flex-col">
        <DialogHeader className="shrink-0">
          <DialogTitle>Выберите креатив</DialogTitle>
          <p className="text-sm text-muted-foreground">
            {creatives.length} креативов доступно
          </p>
        </DialogHeader>
        
        {creatives.length === 0 ? (
          <div className="text-center py-8 text-muted-foreground">
            Нет доступных креативов
          </div>
        ) : (
          <div className="flex-1 overflow-y-auto space-y-2 pr-1">
            {creatives.map((creative) => (
              <CreativeCard
                key={creative.id}
                creative={creative}
                isSelected={currentCreativeId === creative.id}
                onClick={() => {
                  onSelect({
                    id: creative.id,
                    name: creative.name,
                    thumbnail_url: creative.media_items?.[0]?.s3_url,
                  });
                  onOpenChange(false);
                }}
              />
            ))}
          </div>
        )}
        
        {currentCreativeId && onClear && (
          <div className="shrink-0 pt-4 border-t mt-4">
            <Button
              variant="outline"
              className="w-full"
              onClick={() => {
                onClear();
                onOpenChange(false);
              }}
            >
              Отменить выбор креатива
            </Button>
          </div>
        )}
      </DialogContent>
    </Dialog>
  );
}