'use server';

import { sendPushNotification, notifyListCollaborators } from '@/lib/push-notifications';
import { prisma } from '@/lib/db';

/**
 * Notify when an item is added to a shared list
 */
export async function notifyItemAdded(
  listId: string,
  itemTitle: string,
  addedByUserId: string
) {
  const list = await prisma.list.findUnique({
    where: { id: listId },
    include: { owner: true },
  });

  if (!list) return;

  const addedByUser = await prisma.user.findUnique({
    where: { id: addedByUserId },
  });

  await notifyListCollaborators(
    listId,
    {
      title: `New item in "${list.title}"`,
      body: `${addedByUser?.name || 'Someone'} added "${itemTitle}"`,
      icon: '/icon-192.svg',
      tag: `item-added-${listId}`,
      data: {
        url: `/list/${listId}`,
        listId,
        action: 'item-added',
      },
    },
    addedByUserId // Don't notify the person who added it
  );
}

/**
 * Notify when an item is removed from a shared list
 */
export async function notifyItemRemoved(
  listId: string,
  itemTitle: string,
  removedByUserId: string
) {
  const list = await prisma.list.findUnique({
    where: { id: listId },
    include: { owner: true },
  });

  if (!list) return;

  const removedByUser = await prisma.user.findUnique({
    where: { id: removedByUserId },
  });

  await notifyListCollaborators(
    listId,
    {
      title: `Item removed from "${list.title}"`,
      body: `${removedByUser?.name || 'Someone'} removed "${itemTitle}"`,
      icon: '/icon-192.svg',
      tag: `item-removed-${listId}`,
      data: {
        url: `/list/${listId}`,
        listId,
        action: 'item-removed',
      },
    },
    removedByUserId
  );
}

/**
 * Notify when an item is completed
 */
export async function notifyItemCompleted(
  listId: string,
  itemTitle: string,
  completedByUserId: string
) {
  const list = await prisma.list.findUnique({
    where: { id: listId },
    include: { owner: true },
  });

  if (!list) return;

  const completedByUser = await prisma.user.findUnique({
    where: { id: completedByUserId },
  });

  await notifyListCollaborators(
    listId,
    {
      title: `Item completed in "${list.title}"`,
      body: `${completedByUser?.name || 'Someone'} completed "${itemTitle}"`,
      icon: '/icon-192.svg',
      tag: `item-completed-${listId}`,
      data: {
        url: `/list/${listId}`,
        listId,
        action: 'item-completed',
      },
    },
    completedByUserId
  );
}

/**
 * Notify when invited to a list
 */
export async function notifyListInvitation(
  invitationId: string,
  inviteeEmail: string
) {
  const invitation = await prisma.invitation.findUnique({
    where: { id: invitationId },
    include: {
      list: true,
      inviter: true,
    },
  });

  if (!invitation) return;

  // Find the invitee user
  const invitee = await prisma.user.findUnique({
    where: { email: inviteeEmail },
  });

  if (!invitee) return;

  await sendPushNotification(invitee.id, {
    title: 'New list invitation',
    body: `${invitation.inviter.name || 'Someone'} invited you to "${invitation.list.title}"`,
    icon: '/icon-192.svg',
    tag: `invitation-${invitationId}`,
    data: {
      url: '/invitations',
      action: 'invitation-received',
    },
  });
}

/**
 * Notify when someone accepts your invitation
 */
export async function notifyInvitationAccepted(
  invitationId: string
) {
  const invitation = await prisma.invitation.findUnique({
    where: { id: invitationId },
    include: {
      list: true,
      receiver: true,
    },
  });

  if (!invitation || !invitation.receiver) return;

  await sendPushNotification(invitation.inviterId, {
    title: 'Invitation accepted',
    body: `${invitation.receiver.name || invitation.email} joined "${invitation.list.title}"`,
    icon: '/icon-192.svg',
    tag: `invitation-accepted-${invitationId}`,
    data: {
      url: `/list/${invitation.listId}`,
      listId: invitation.listId,
      action: 'invitation-accepted',
    },
  });
}

/**
 * Notify when removed from a list
 */
export async function notifyRemovedFromList(
  userId: string,
  listTitle: string,
  removedByUserId: string
) {
  const removedByUser = await prisma.user.findUnique({
    where: { id: removedByUserId },
  });

  await sendPushNotification(userId, {
    title: 'Removed from list',
    body: `${removedByUser?.name || 'The owner'} removed you from "${listTitle}"`,
    icon: '/icon-192.svg',
    tag: `removed-from-list`,
    data: {
      url: '/',
      action: 'removed-from-list',
    },
  });
}