import { Paginated, Params } from '@feathersjs/feathers'
import { SequelizeServiceOptions, Service } from 'feathers-sequelize'
import Sequelize, { Op } from 'sequelize'
import slugify from 'slugify'

import { Location as LocationType } from '@xrengine/common/src/interfaces/Location'
import { UserInterface } from '@xrengine/common/src/interfaces/User'

import { Application } from '../../../declarations'
import logger from '../../ServerLogger'
import { UserParams } from '../../user/user/user.class'

export type LocationDataType = LocationType

export class Location<T = LocationDataType> extends Service<T> {
  app: Application
  docs: any

  constructor(options: Partial<SequelizeServiceOptions>, app: Application) {
    super(options)
    this.app = app
  }

  // async create (data: any, params: Params): Promise<any> {
  //   console.log(data);
  //   const { id } = data;
  //
  //   if (id) {
  //     await this.app.service('location').get(id).then((existingLocation: any) => {
  //       new Promise((resolve) =>
  //         setTimeout(() => resolve(super.update(id, data, params)), 1000)
  //       ).then((updatedLocation: any) => {
  //         this.createInstances({ id: updatedLocation.id, instance: data.instance }).then(() => {}, () => {});
  //       }, (reason: any) => {
  //         console.error(reason);
  //       });
  //     }, (newLoc: any) => {
  //       this.createNewLocation({ data, params }).then(() => {}, () => {});
  //     });
  //   } else {
  //     this.createNewLocation({ data, params }).then(() => {}, () => {});
  //   }
  //
  //   return 'success';
  // }

  /**
   * A method which is used to create new location
   *
   * @param param0 data of new location
   */

  async createNewLocation({ data, params }: { data: any; params: Params }): Promise<any> {
    await new Promise((resolve) => setTimeout(() => resolve(super.create(data, params)), 1000)).then(
      (updatedLocation: any) => {
        this.createInstances({ id: updatedLocation.id, instance: data.instance }).then(
          () => {},
          () => {}
        )
      },
      (reason: any) => {
        logger.error(reason)
      }
    )
  }

  /**
   * A function which is used to create new instance
   *
   * @param param0 data of instance
   */
  async createInstances({ id, instance }: { id: any; instance: any }): Promise<void> {
    if (instance) {
      await instance.forEach((element: any) => {
        if (element.id) {
          this.app.services.instance.get(element.id).then(
            (existingInstance: any) => {
              element.locationId = id
              new Promise((resolve) =>
                setTimeout(() => resolve(this.app.services.instance.update(existingInstance.id, element)), 1000)
              ).then(
                (value: any) => {
                  logger.info(value)
                },
                (reason: any) => {
                  logger.error(reason)
                }
              )
            },
            (newIns: any) => {
              element.locationId = id
              new Promise((resolve) =>
                setTimeout(() => resolve(this.app.services.instance.create(element)), 1000)
              ).then(
                (value: any) => {
                  logger.info(value)
                },
                (reasone: any) => {
                  logger.error(reasone)
                }
              )
            }
          )
        } else {
          element.locationId = id
          new Promise((resolve) => setTimeout(() => resolve(this.app.services.instance.create(element)), 1000)).then(
            (value: any) => {
              logger.info(value)
            },
            (reason: any) => {
              logger.error(reason)
            }
          )
        }
      })
    }
  }

  /**
   * A function which help to find and display all locations
   *
   * @param params of query with limit number and skip number
   * @returns {@Array} of all locations
   */
  async find(params?: UserParams): Promise<T[] | Paginated<T>> {
    let { $skip, $limit, $sort, joinableLocations, adminnedLocations, search, ...strippedQuery } = params?.query ?? {}

    if ($skip == null) $skip = 0
    if ($limit == null) $limit = 10

    const order: any[] = []
    if ($sort != null)
      Object.keys($sort).forEach((name, val) => {
        if (name === 'type') {
          order.push(['location_setting', 'locationType', $sort[name] === 0 ? 'DESC' : 'ASC'])
        } else if (name === 'audioEnabled') {
          order.push(['location_setting', 'audioEnabled', $sort[name] === 0 ? 'DESC' : 'ASC'])
        } else if (name === 'videoEnabled') {
          order.push(['location_setting', 'videoEnabled', $sort[name] === 0 ? 'DESC' : 'ASC'])
        } else {
          order.push([name, $sort[name] === 0 ? 'DESC' : 'ASC'])
        }
      })

    if (joinableLocations) {
      const locationResult = await this.app.service('location').Model.findAndCountAll({
        offset: $skip,
        limit: $limit,
        where: strippedQuery,
        order: order,
        include: [
          {
            model: this.app.service('instance').Model,
            required: false,
            where: {
              currentUsers: {
                [Op.lt]: Sequelize.col('location.maxUsersPerInstance')
              },
              ended: false
            }
          },
          {
            model: this.app.service('location-settings').Model,
            required: false
          },
          {
            model: this.app.service('location-ban').Model,
            required: false
          },
          {
            model: this.app.service('location-authorized-user').Model,
            required: false
          }
        ]
      })
      return {
        skip: $skip,
        limit: $limit,
        total: locationResult.count,
        data: locationResult.rows
      }
    } else if (adminnedLocations) {
      const loggedInUser = params!.user as UserInterface
      const include = [
        {
          model: this.app.service('location-settings').Model,
          required: false
        },
        {
          model: this.app.service('location-ban').Model,
          required: false
        },
        {
          model: this.app.service('location-authorized-user').Model,
          require: false
        }
      ]

      if (!loggedInUser.scopes || !loggedInUser.scopes.find((scope) => scope.type === 'admin:admin')) {
        ;(include as any).push({
          model: this.app.service('location-admin').Model,
          where: {
            userId: loggedInUser.id
          }
        })
      }

      let q = {}

      if (search) {
        q = {
          [Op.or]: [
            Sequelize.where(Sequelize.fn('lower', Sequelize.col('name')), {
              [Op.like]: '%' + search.toLowerCase() + '%'
            }),
            Sequelize.where(Sequelize.fn('lower', Sequelize.col('sceneId')), {
              [Op.like]: '%' + search.toLowerCase() + '%'
            })
          ]
        }
      }
      const locationResult = await this.app.service('location').Model.findAndCountAll({
        offset: $skip,
        limit: $limit,
        where: { ...strippedQuery, ...q },
        order: order,
        include: include
      })
      return {
        skip: $skip,
        limit: $limit,
        total: locationResult.count,
        data: locationResult.rows
      }
    } else {
      return super.find(params)
    }
  }

  /**
   * A function which is used to create new location
   *
   * @param data of location
   * @param params
   * @returns new location object
   */
  async create(data: any, params?: UserParams): Promise<T> {
    const t = await this.app.get('sequelizeClient').transaction()

    try {
      // @ts-ignore
      let { location_settings, ...locationData } = data
      const loggedInUser = params!.user as UserInterface
      locationData.slugifiedName = slugify(locationData.name, { lower: true })

      if (locationData.isLobby) await this.makeLobby(t, params)

      const location = await this.Model.create(locationData, { transaction: t })
      await this.app.service('location-settings').Model.create(
        {
          videoEnabled: !!location_settings.videoEnabled,
          audioEnabled: !!location_settings.audioEnabled,
          faceStreamingEnabled: !!location_settings.faceStreamingEnabled,
          screenSharingEnabled: !!location_settings.screenSharingEnabled,
          maxUsersPerInstance: locationData.maxUsersPerInstance || 10,
          locationType: location_settings.locationType || 'private',
          locationId: location.id
        },
        { transaction: t }
      )

      if (loggedInUser) {
        await Promise.all([
          this.app.service('location-admin').Model.create(
            {
              locationId: location.id,
              userId: loggedInUser.id
            },
            { transaction: t }
          ),
          this.app.service('location-authorized-user').Model.create(
            {
              locationId: location.id,
              userId: loggedInUser.id
            },
            { transaction: t }
          )
        ])
      }

      await t.commit()

      return location as T
    } catch (err) {
      logger.error(err)
      await t.rollback()
      if (err.errors[0].message === 'slugifiedName must be unique') {
        throw new Error('Name is in use.')
      }
      throw err
    }
  }

  /**
   * A function which is used to update location
   *
   * @param id of location to update
   * @param data of location going to be updated
   * @returns updated location
   */
  async patch(id: string, data: any, params?: Params): Promise<T> {
    const t = await this.app.get('sequelizeClient').transaction()

    try {
      // @ts-ignore
      let { location_settings, ...locationData } = data
      location_settings ??= data['location_setting']

      const old = await this.Model.findOne({
        where: { id },
        include: [this.app.service('location-settings').Model]
      })
      const oldSettings = old.location_setting ?? old.location_settings

      if (locationData.name) locationData.slugifiedName = slugify(locationData.name, { lower: true })
      if (!old.isLobby && locationData.isLobby) await this.makeLobby(t, params)

      await this.Model.update(locationData, { where: { id }, transaction: t }) // super.patch(id, locationData, params);

      await this.app.service('location-settings').Model.update(
        {
          videoEnabled: !!location_settings.videoEnabled,
          audioEnabled: !!location_settings.audioEnabled,
          faceStreamingEnabled: !!location_settings.faceStreamingEnabled,
          screenSharingEnabled: !!location_settings.screenSharingEnabled,
          maxUsersPerInstance: locationData.maxUsersPerInstance || 10,
          locationType: location_settings.locationType || 'private'
        },
        { where: { id: oldSettings.id }, transaction: t }
      )

      await t.commit()
      const location = await this.Model.findOne({
        where: { id },
        include: [this.app.service('location-settings').Model]
      })

      return location as T
    } catch (err) {
      logger.error(err)
      await t.rollback()
      if (err.errors[0].message === 'slugifiedName must be unique') {
        throw new Error('That name is already in use')
      }
      throw err
    }
  }
  /**
   * A function which is used to remove location
   *
   * @param id of location which is going to be removed
   * @param params which contain user information
   * @returns {@function} of remove data
   */

  async remove(id: string, params?: UserParams): Promise<T> {
    const location = await this.app.service('location').Model.findOne({
      where: {
        isLobby: true,
        id: id
      },
      attributes: ['id', 'isLobby']
    })

    if (location) {
      throw new Error("Lobby can't be deleted")
    }

    if (id != null) {
      const selfUser = params!.user as UserInterface
      const location = await this.app.service('location').get(id)
      if (location.locationSettingsId != null)
        await this.app.service('location-settings').remove(location.locationSettingsId)
      try {
        const locationAdminItems = await (this.app.service('location-admin') as any).Model.findAll({
          where: {
            locationId: id,
            userId: selfUser.id ?? null
          }
        })
        locationAdminItems.length &&
          locationAdminItems.forEach(async (route) => {
            await this.app.service('location-admin').remove(route.dataValues.id)
          })
      } catch (err) {
        logger.error(err, `Could not remove location-admin: ${err.message}`)
      }
    }
    return (await super.remove(id)) as T
  }

  async makeLobby(t, params?: UserParams): Promise<void> {
    const selfUser = params!.user as UserInterface

    if (!selfUser || !selfUser.scopes || !selfUser.scopes.find((scope) => scope.type === 'admin:admin'))
      throw new Error('Only Admin can set Lobby')

    await this.Model.update({ isLobby: false }, { where: { isLobby: true }, transaction: t })
  }
}