import { db } from "~/utils/db.server";

export async function createUserGroup(userId: string, groupId: string) {
  return await db.groupUser.create({
    data: {
      userId,
      groupId,
    },
  });
}

export async function createUserGroups(groupId: string, userIds: string[]) {
  const uniqueUserIds = [...new Set(userIds)];
  if (uniqueUserIds.length === 0) {
    return { count: 0 };
  }
  return await db.groupUser.createMany({
    data: uniqueUserIds.map((userId) => ({
      userId,
      groupId,
    })),
    skipDuplicates: true,
  });
}

export async function deleteUserGroup(userId: string, groupId: string) {
  return await db.groupUser.deleteMany({
    where: {
      userId,
      groupId,
    },
  });
}

export async function replaceGroupUsers(groupId: string, tenantId: string, userIds: string[]) {
  const uniqueUserIds = [...new Set(userIds)];
  return await db.$transaction(async (tx) => {
    await tx.groupUser.deleteMany({
      where: {
        groupId,
        group: { tenantId },
      },
    });
    if (uniqueUserIds.length === 0) {
      return { count: 0 };
    }
    return await tx.groupUser.createMany({
      data: uniqueUserIds.map((userId) => ({
        userId,
        groupId,
      })),
      skipDuplicates: true,
    });
  });
}

export async function deleteGroupUsers(groupId: string, tenantId: string) {
  return await db.groupUser.deleteMany({
    where: {
      groupId,
      group: { tenantId },
    },
  });
}