import {
  EDITOR_AGENT_ERROR_MESSAGE_PREFIX,
  type EditorAgentMessage,
} from '@/packages/shared/src/contracts';
import AttachmentChip from '@/src/components/image-editor/EditorAgentConversation/AttachmentChip.tsx';
import { attachmentKey } from '@/src/components/image-editor/EditorAgentConversation/common.ts';
import { PendingToolCall } from '@/src/components/image-editor/EditorAgentConversation/PendingToolCall.tsx';
import ToolCallView from '@/src/components/image-editor/EditorAgentConversation/ToolCallView.tsx';

function messageRoleLabel(role: EditorAgentMessage['role']) {
  if (role === 'user') {
    return '你';
  }
  return 'Agent';
}

export function ThinkingBubble() {
  return (
    <article className="flex justify-start" aria-label="Agent思考中">
      <div className="max-w-[86%] rounded-3xl border border-slate-200 bg-white px-3.5 py-3 text-sm leading-6 shadow-sm">
        <div className="flex items-center gap-1.5">
          <span className="flex gap-0.5">
            <span
              className="h-1.5 w-1.5 animate-bounce rounded-full bg-slate-400"
              style={{ animationDelay: '0ms' }}
            />
            <span
              className="h-1.5 w-1.5 animate-bounce rounded-full bg-slate-400"
              style={{ animationDelay: '150ms' }}
            />
            <span
              className="h-1.5 w-1.5 animate-bounce rounded-full bg-slate-400"
              style={{ animationDelay: '300ms' }}
            />
          </span>
        </div>
      </div>
    </article>
  );
}

type MessageBubbleProps = {
  message: EditorAgentMessage;
  busyAction: 'confirm' | 'cancel' | null;
  onConfirmToolCall: (messageId: number) => Promise<void>;
  onCancelToolCall: (messageId: number) => Promise<void>;
  onJobCompleted?: () => void;
};

export function MessageBubble({
  message,
  busyAction,
  onConfirmToolCall,
  onCancelToolCall,
  onJobCompleted,
}: MessageBubbleProps) {
  const systemErrorText =
    message.role === 'system' &&
    !message.toolCall &&
    message.text.startsWith(EDITOR_AGENT_ERROR_MESSAGE_PREFIX)
      ? message.text.slice(EDITOR_AGENT_ERROR_MESSAGE_PREFIX.length)
      : null;

  if (message.role === 'system' && !message.toolCall && systemErrorText === null) {
    return null;
  }
  if (
    message.role === 'system' &&
    message.toolCall &&
    message.toolCall.status === 'not_completed' &&
    !message.toolCall.externalJobId
  ) {
    return (
      <PendingToolCall
        messageId={message.id}
        toolCall={message.toolCall}
        busyAction={busyAction}
        onConfirm={onConfirmToolCall}
        onCancel={onCancelToolCall}
      />
    );
  }

  const isUser = message.role === 'user';
  const isSystem = message.role === 'system';
  const isSystemError = systemErrorText !== null;

  return (
    <article
      className={`flex ${isUser ? 'justify-end' : 'justify-start'}`}
      aria-label={
        isSystemError
          ? 'Agent错误'
          : isSystem
            ? 'Agent操作'
            : `${messageRoleLabel(message.role)}消息`
      }
    >
      <div
        className={
          isSystem && !isSystemError
            ? 'max-w-[86%]'
            : `max-w-[86%] rounded-3xl px-3.5 py-3 text-sm leading-6 shadow-sm ${
                isUser
                  ? 'bg-slate-900 text-white'
                  : isSystemError || message.toolCall?.status === 'failed'
                    ? 'border border-red-200 bg-red-50 text-red-700'
                    : 'border border-slate-200 bg-white text-slate-700'
              }`
        }
      >
        {(!isSystem || isSystemError) && (systemErrorText ?? message.text) ? (
          <div className="whitespace-pre-wrap break-words">
            {systemErrorText ?? message.text}
          </div>
        ) : null}
        {!isSystem && message.attachments.length ? (
          <div className="mt-2 flex flex-wrap gap-1.5">
            {message.attachments.map((attachment) => (
              <AttachmentChip
                key={attachmentKey(attachment)}
                attachment={attachment}
              />
            ))}
          </div>
        ) : null}
        {message.toolCall ? (
          <ToolCallView
            toolCall={message.toolCall}
            onJobCompleted={onJobCompleted}
          />
        ) : null}
      </div>
    </article>
  );
}