// web/src/components/Message.tsx
import React from "react";
import ReactMarkdown from "react-markdown";
import remarkGfm from "remark-gfm";

import type { Message as MessageType, LearningMode } from "../App";

interface MessageProps {
  message: MessageType;

  // existing props you are already passing in ChatArea
  showSenderInfo?: boolean;
  userId?: string;
  isLoggedIn: boolean;
  learningMode: LearningMode;
  docType?: string;
  lastUserText?: string;
}

export function Message({
  message,
  showSenderInfo,
  userId,
  isLoggedIn,
  learningMode,
  docType,
  lastUserText,
}: MessageProps) {
  const isUser = message.role === "user";

  // If you already have avatar / sender rendering logic, keep it.
  // The only critical change is content rendering below.
  return (
    <div className={`flex gap-3 ${isUser ? "justify-end" : "justify-start"}`}>
      {!isUser && (
        <div className="w-8 h-8 rounded-full bg-gradient-to-br from-purple-500 to-blue-500 flex items-center justify-center flex-shrink-0">
          <span className="text-white text-sm">C</span>
        </div>
      )}

      <div className={`max-w-[85%] ${isUser ? "text-right" : "text-left"}`}>
        {/* Optional sender info (group mode) */}
        {showSenderInfo && message.sender && !isUser && (
          <div className="text-xs text-muted-foreground mb-1">
            {message.sender.name}
          </div>
        )}

        <div
          className={[
            "rounded-2xl px-4 py-3 border",
            isUser
              ? "bg-primary text-primary-foreground border-primary/20"
              : "bg-muted text-foreground border-border",
          ].join(" ")}
        >
          {/* ✅ THE FIX: render markdown instead of plain text */}
          <ReactMarkdown
            remarkPlugins={[remarkGfm]}
            className={[
              // prose improves markdown typography; max-w-none prevents narrow column
              "prose prose-sm max-w-none",
              // keep readable in chat bubble
              "prose-p:my-2 prose-li:my-1 prose-ul:my-2 prose-ol:my-2",
              // make headings not too large inside bubble
              "prose-h1:text-base prose-h2:text-base prose-h3:text-sm",
              // avoid code blocks overflowing
              "prose-pre:overflow-x-auto",
              // inherit bubble colors
              isUser ? "prose-invert" : "",
            ].join(" ")}
          >
            {message.content || ""}
          </ReactMarkdown>

          {/* If you already render references, keep your original block here */}
          {message.references && message.references.length > 0 && (
            <div className="mt-3 pt-3 border-t border-border/50 text-xs text-muted-foreground space-y-1">
              <div className="font-medium">References</div>
              {message.references.map((r, idx) => (
                <div key={idx} className="truncate">
                  {r}
                </div>
              ))}
            </div>
          )}

          {/* If you already have feedback buttons inside Message, keep them here.
              Do not change logic—only keep UI. */}
        </div>
      </div>

      {isUser && (
        <div className="w-8 h-8 rounded-full bg-primary flex items-center justify-center flex-shrink-0">
          <span className="text-primary-foreground text-sm">U</span>
        </div>
      )}
    </div>
  );
}