import { Prisma } from '@/generated/prisma/client';
import redis from '@/lib/redis';
import prisma from '@/lib/prisma';
import { QueryFilters } from '@/lib/types';
import { ROLES } from '@/lib/constants';

export async function findWebsite(criteria: Prisma.WebsiteFindUniqueArgs) {
  return prisma.client.website.findUnique(criteria);
}

export async function getWebsite(websiteId: string) {
  return findWebsite({
    where: {
      id: websiteId,
    },
  });
}

export async function getSharedWebsite(shareId: string) {
  return findWebsite({
    where: {
      shareId,
      deletedAt: null,
    },
  });
}

export async function getWebsites(criteria: Prisma.WebsiteFindManyArgs, filters: QueryFilters) {
  const { search } = filters;
  const { getSearchParameters, pagedQuery } = prisma;

  const where: Prisma.WebsiteWhereInput = {
    ...criteria.where,
    ...getSearchParameters(search, [
      {
        name: 'contains',
      },
      { domain: 'contains' },
    ]),
    deletedAt: null,
  };

  return pagedQuery('website', { ...criteria, where }, filters);
}

export async function getAllUserWebsitesIncludingTeamOwner(userId: string, filters?: QueryFilters) {
  return getWebsites(
    {
      where: {
        OR: [
          { userId },
          {
            team: {
              deletedAt: null,
              members: {
                some: {
                  role: ROLES.teamOwner,
                  userId,
                },
              },
            },
          },
        ],
      },
    },
    {
      orderBy: 'name',
      ...filters,
    },
  );
}

export async function getUserWebsites(userId: string, filters?: QueryFilters) {
  return getWebsites(
    {
      where: {
        userId,
      },
      include: {
        user: {
          select: {
            username: true,
            id: true,
          },
        },
      },
    },
    {
      orderBy: 'name',
      ...filters,
    },
  );
}

export async function getTeamWebsites(teamId: string, filters?: QueryFilters) {
  return getWebsites(
    {
      where: {
        teamId,
      },
      include: {
        createUser: {
          select: {
            id: true,
            username: true,
          },
        },
      },
    },
    filters,
  );
}

export async function createWebsite(
  data: Prisma.WebsiteCreateInput | Prisma.WebsiteUncheckedCreateInput,
) {
  return prisma.client.website.create({
    data,
  });
}

export async function updateWebsite(
  websiteId: string,
  data: Prisma.WebsiteUpdateInput | Prisma.WebsiteUncheckedUpdateInput,
) {
  return prisma.client.website.update({
    where: {
      id: websiteId,
    },
    data,
  });
}

export async function resetWebsite(websiteId: string) {
  const { client } = prisma;
  const cloudMode = !!process.env.CLOUD_MODE;

  // For large datasets, we need to delete data in chunks to avoid transaction timeouts
  // We'll delete data in batches of 10000 records at a time
  const deleteInBatches = async (model: any, where: any) => {
    let deletedCount;
    do {
      // First, find records to delete (up to 10000)
      const recordsToDelete = await model.findMany({
        where,
        take: 10000,
        select: {
          id: true,
        },
      });
      
      if (recordsToDelete.length === 0) {
        deletedCount = 0;
        break;
      }
      
      // Then delete those records by their IDs
      const result = await model.deleteMany({
        where: {
          id: {
            in: recordsToDelete.map((record: any) => record.id),
          },
        },
      });
      
      deletedCount = result.count;
    } while (deletedCount > 0);
  };

  // Delete data in batches to avoid transaction timeouts
  await deleteInBatches(client.eventData, { websiteId });
  await deleteInBatches(client.sessionData, { websiteId });
  await deleteInBatches(client.websiteEvent, { websiteId });
  await deleteInBatches(client.session, { websiteId });

  // Update the website reset timestamp
  const data = await client.website.update({
    where: { id: websiteId },
    data: {
      resetAt: new Date(),
    },
  });

  if (cloudMode) {
    await redis.client.set(`website:${websiteId}`, data);
  }

  return data;
}

export async function deleteWebsite(websiteId: string) {
  const { client, transaction } = prisma;
  const cloudMode = !!process.env.CLOUD_MODE;

  return transaction([
    client.eventData.deleteMany({
      where: { websiteId },
    }),
    client.sessionData.deleteMany({
      where: { websiteId },
    }),
    client.websiteEvent.deleteMany({
      where: { websiteId },
    }),
    client.session.deleteMany({
      where: { websiteId },
    }),
    client.report.deleteMany({
      where: {
        websiteId,
      },
    }),
    cloudMode
      ? client.website.update({
          data: {
            deletedAt: new Date(),
          },
          where: { id: websiteId },
        })
      : client.website.delete({
          where: { id: websiteId },
        }),
  ]).then(async data => {
    if (cloudMode) {
      await redis.client.del(`website:${websiteId}`);
    }

    return data;
  });
}

export async function getWebsiteCount(userId: string) {
  return prisma.client.website.count({
    where: {
      userId,
      deletedAt: null,
    },
  });
}