import { useState } from "react";
import { ArrowRight, RefreshCcw, Copy, Check, Trash2, RotateCcw, ListFilter, ChevronLeft, ChevronRight } from "lucide-react";
import { Button } from "@/components/ui/button";
import { cn } from "@/lib/utils";
import { format } from "date-fns";
import { Avatar, AvatarFallback } from "../ui/avatar";
import { ChatMessage } from "./ChatMessage";
import { ThinkingAnimation } from "./ThinkingAnimation";
import { toast } from '../ui/sonner';
import { MessageActions } from "./MessageActions";
import { MessageVariationControls } from "./MessageVariationControls";
import { DeleteMessageDialog } from "./DeleteMessageDialog";
import { MessageVariation, Message } from "@/types/chat";

interface ChatBubbleProps {
  message: Message;
  onViewSearchResults?: (messageId: string) => void;
  onRetry?: (messageId: string) => void;
  onRegenerate?: (messageId: string) => void;
  onDelete?: (messageId: string) => void;
  onSelectVariation?: (messageId: string, variationId: string) => void;
}

export const ChatBubble = ({ 
  message, 
  onViewSearchResults, 
  onRetry, 
  onRegenerate,
  onDelete,
  onSelectVariation
}: ChatBubbleProps) => {
  const [copied, setCopied] = useState(false);
  const [deleteDialogOpen, setDeleteDialogOpen] = useState(false);
  const isWelcomeMessage = message.id === "welcomems";
  const isSystem = message.sender === "system";
  const hasVariations = isSystem && message.variations && message.variations.length > 0;
  
  // If the message has variations, display the active one or the first one
  const displayContent = isSystem && hasVariations && message.activeVariation
    ? message.variations.find(v => v.id === message.activeVariation)?.content || message.content
    : message.content;
  
  const copyToClipboard = () => {
    // Strip thinking content before copying
    const cleanContent = displayContent.replace(/<think>[\s\S]*?<\/think>/g, '').trim();
    navigator.clipboard.writeText(cleanContent);
    setCopied(true);
    toast.success('Copied to clipboard!');
    setTimeout(() => setCopied(false), 2000);
  };

  const handleDelete = () => {
    setDeleteDialogOpen(false);
    if (onDelete) {
      onDelete(message.id);
    }
  };

  return (
    <>
      <div
        className={cn(
          "group flex w-full animate-slide-in mb-2",
          isSystem ? "justify-start" : "justify-end"
        )}
      >
        <div className={cn(
          "flex gap-3 max-w-[80%]",
          isSystem ? "flex-row" : "flex-row-reverse"
        )}>
          <Avatar className={cn(
            "h-8 w-8 border",
            isSystem
              ? "bg-financial-accent dark:text-white shadow-lg"
              : "bg-muted"
          )}>
            <AvatarFallback className="text-xs font-semibold">
              {isSystem ? "AI" : "You"}
            </AvatarFallback>
          </Avatar>

          <div className="flex flex-col">
            <div className={cn(
              "rounded-2xl shadow-lg message-bubble backdrop-blur-sm",
              isSystem
                ? "bg-white/90 dark:bg-card/90 border border-border text-foreground message-bubble-ai"
                : "bg-financial-accent/30 border border-financial-accent/30 dark:text-white message-bubble-user",
              message.error && "border-destructive dark:border-red-500"
            )}>
              {message.isLoading ? (
                <ThinkingAnimation />
              ) : (
                <ChatMessage
                  content={displayContent}
                />
              )}
            </div>
            
            {/* Chat bubble footer */}
            <div className="flex flex-row chat-bubble-footer justify-between items-center mt-1">
              {/* Time */}
              <div className={cn(
                "text-xs text-muted-foreground",
                isSystem ? "text-left" : "text-right"
              )}>
                {format(message.timestamp, "h:mm a")}
              </div>
              
              {/* Controls */}
              {!isWelcomeMessage && (
                <div className="controls flex gap-1 items-center">
                  {/* Variation controls */}
                  {hasVariations && message.variations && message.variations.length > 1 && (
                    <MessageVariationControls 
                      message={message}
                      onSelectVariation={onSelectVariation}
                    />
                  )}
                
                  <MessageActions 
                    message={message}
                    onRetry={onRetry}
                    onRegenerate={onRegenerate}
                    onDelete={() => setDeleteDialogOpen(true)}
                    onCopy={copyToClipboard}
                    copied={copied}
                  />
                </div>
              )}
            </div>
          </div>
        </div>
      </div>
      
      <DeleteMessageDialog 
        isOpen={deleteDialogOpen} 
        onOpenChange={setDeleteDialogOpen}
        onDelete={handleDelete}
      />
    </>
  );
};