import type { Message, Member } from './types';
import type { RoomMessageResponse } from '@/client/model';

export function getDateLabel(isoDate: string): string {
  const date = new Date(isoDate);
  const now = new Date();
  const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
  const yesterday = new Date(today.getTime() - 86400000);
  const msgDate = new Date(date.getFullYear(), date.getMonth(), date.getDate());
  if (msgDate.getTime() === today.getTime()) return 'Today';
  if (msgDate.getTime() === yesterday.getTime()) return 'Yesterday';
  return date.toLocaleDateString('en-US', { weekday: 'long', month: 'long', day: 'numeric', year: 'numeric' });
}

export function formatTime(isoDate: string): string {
  return new Date(isoDate).toLocaleTimeString('en-US', { hour: 'numeric', minute: '2-digit' });
}

export function formatRelativeTime(isoDate: string): string {
  const diff = Date.now() - new Date(isoDate).getTime();
  const seconds = Math.floor(diff / 1000);
  if (seconds < 60) return 'just now';
  const minutes = Math.floor(seconds / 60);
  if (minutes < 60) return `${minutes}m ago`;
  const hours = Math.floor(minutes / 60);
  if (hours < 24) return `${hours}h ago`;
  return getDateLabel(isoDate);
}

export function shouldGroup(prev: Message, curr: Message): boolean {
  if (prev.sender_id !== curr.sender_id) return false;
  if (prev.thread || curr.thread) return false;
  if (curr.in_reply_to) return false;
  if (prev.sender_type === 'ai') return false;
  const diff = new Date(curr.send_at).getTime() - new Date(prev.send_at).getTime();
  return diff < 5 * 60 * 1000;
}

export function mapHttpMessage(r: RoomMessageResponse): Message {
  return {
    ...r,
    thread: (r as any).thread ?? (r as any).thread_id,
    _localReactions: [],
    is_streaming: false,
    isOptimistic: false,
    isOptimisticError: false,
    thinking_content: (r as any).thinking_content ?? null,
  };
}

export function mapParticipantToMember(p: any, presence?: Member['presence']): Member {
  return {
    uid: p.user,
    username: p.user_info?.username ?? p.user,
    avatar_url: p.user_info?.avatar_url ?? null,
    project_role: p.project_role,
    is_room_owner: p.is_room_owner,
    last_read_seq: p.last_read_seq ?? null,
    do_not_disturb: p.do_not_disturb,
    presence: presence ?? 'offline',
  };
}

export function mapStreamData(data: any): any {
  return {
    message_id: data.message_id ?? data.id,
    content: data.content ?? '',
    seq: data.seq ?? 0,
    chunk_type: data.chunk_type ?? null,
    display_name: data.display_name ?? null,
    done: data.done ?? false,
    thinking_content: data.thinking_content ?? null,
    error: data.error ?? null,
  };
}