import prisma from '../lib/prisma';
import { HttpError } from '../lib/httpError';
import * as notificationService from './notificationService';
import { logger } from '../lib/logger';

export async function addComment(ticketIdOrDisplay: string, body: string, actorId: string) {
  const ticket = await prisma.ticket.findFirst({
    where: { OR: [{ id: ticketIdOrDisplay }, { displayId: ticketIdOrDisplay }] },
  });
  if (!ticket) throw new HttpError(404, 'Ticket not found');

  const [comment] = await prisma.$transaction([
    prisma.comment.create({
      data: { body, ticketId: ticket.id, authorId: actorId },
      include: { author: { select: { id: true, username: true, displayName: true } } },
    }),
    prisma.auditLog.create({
      data: { ticketId: ticket.id, userId: actorId, action: 'COMMENT_ADDED', detail: body },
    }),
  ]);

  notificationService
    .notifyCommentCreated(ticket.id, comment.id)
    .catch((err: Error) => logger.error({ err }, 'notifyCommentCreated failed'));

  const usernames = notificationService.parseMentions(body);
  if (usernames.length > 0) {
    prisma.user
      .findMany({ where: { username: { in: usernames } }, select: { id: true } })
      .then((users) => {
        const ids = users.map((u) => u.id).filter((id) => id !== actorId);
        if (ids.length > 0) {
          return notificationService.notifyMention(ticket.id, comment.id, ids);
        }
      })
      .catch((err: Error) => logger.error({ err }, 'mention notification failed'));
  }

  return comment;
}

export async function deleteComment(
  commentId: string,
  actor: { id: string; role: string },
) {
  const comment = await prisma.comment.findUnique({ where: { id: commentId } });
  if (!comment) throw new HttpError(404, 'Comment not found');

  if (comment.authorId !== actor.id && actor.role !== 'ADMIN') {
    throw new HttpError(403, 'Not allowed');
  }

  await prisma.$transaction([
    prisma.comment.delete({ where: { id: commentId } }),
    prisma.auditLog.create({
      data: {
        ticketId: comment.ticketId,
        userId: actor.id,
        action: 'COMMENT_DELETED',
        detail: comment.body,
      },
    }),
  ]);
}