server/models/account/account-follow.ts

   1 import { values } from 'lodash'
   2 import * as Sequelize from 'sequelize'
   3
   4 import { addMethodsToModel, getSort } from '../utils'
   5 import { AccountFollowAttributes, AccountFollowInstance, AccountFollowMethods } from './account-follow-interface'
   6 import { FOLLOW_STATES } from '../../initializers/constants'
   7
   8 let AccountFollow: Sequelize.Model<AccountFollowInstance, AccountFollowAttributes>
   9 let loadByAccountAndTarget: AccountFollowMethods.LoadByAccountAndTarget
  10 let listFollowingForApi: AccountFollowMethods.ListFollowingForApi
  11 let listFollowersForApi: AccountFollowMethods.ListFollowersForApi
  12 let listAcceptedFollowerUrlsForApi: AccountFollowMethods.ListAcceptedFollowerUrlsForApi
  13 let listAcceptedFollowingUrlsForApi: AccountFollowMethods.ListAcceptedFollowingUrlsForApi
  14 let listAcceptedFollowerSharedInboxUrls: AccountFollowMethods.ListAcceptedFollowerSharedInboxUrls
  15 let toFormattedJSON: AccountFollowMethods.ToFormattedJSON
  16
  17 export default function (sequelize: Sequelize.Sequelize, DataTypes: Sequelize.DataTypes) {
  18   AccountFollow = sequelize.define<AccountFollowInstance, AccountFollowAttributes>('AccountFollow',
  19     {
  20       state: {
  21         type: DataTypes.ENUM(values(FOLLOW_STATES)),
  22         allowNull: false
  23       }
  24     },
  25     {
  26       indexes: [
  27         {
  28           fields: [ 'accountId' ]
  29         },
  30         {
  31           fields: [ 'targetAccountId' ]
  32         },
  33         {
  34           fields: [ 'accountId', 'targetAccountId' ],
  35           unique: true
  36         }
  37       ]
  38     }
  39   )
  40
  41   const classMethods = [
  42     associate,
  43     loadByAccountAndTarget,
  44     listFollowingForApi,
  45     listFollowersForApi,
  46     listAcceptedFollowerUrlsForApi,
  47     listAcceptedFollowingUrlsForApi,
  48     listAcceptedFollowerSharedInboxUrls
  49   ]
  50   const instanceMethods = [
  51     toFormattedJSON
  52   ]
  53   addMethodsToModel(AccountFollow, classMethods, instanceMethods)
  54
  55   return AccountFollow
  56 }
  57
  58 // ------------------------------ STATICS ------------------------------
  59
  60 function associate (models) {
  61   AccountFollow.belongsTo(models.Account, {
  62     foreignKey: {
  63       name: 'accountId',
  64       allowNull: false
  65     },
  66     as: 'AccountFollower',
  67     onDelete: 'CASCADE'
  68   })
  69
  70   AccountFollow.belongsTo(models.Account, {
  71     foreignKey: {
  72       name: 'targetAccountId',
  73       allowNull: false
  74     },
  75     as: 'AccountFollowing',
  76     onDelete: 'CASCADE'
  77   })
  78 }
  79
  80 toFormattedJSON = function (this: AccountFollowInstance) {
  81   const follower = this.AccountFollower.toFormattedJSON()
  82   const following = this.AccountFollowing.toFormattedJSON()
  83
  84   const json = {
  85     id: this.id,
  86     follower,
  87     following,
  88     state: this.state,
  89     createdAt: this.createdAt,
  90     updatedAt: this.updatedAt
  91   }
  92
  93   return json
  94 }
  95
  96 loadByAccountAndTarget = function (accountId: number, targetAccountId: number) {
  97   const query = {
  98     where: {
  99       accountId,
 100       targetAccountId
 101     },
 102     include: [
 103       {
 104         model: AccountFollow[ 'sequelize' ].models.Account,
 105         required: true,
 106         as: 'AccountFollower'
 107       },
 108       {
 109         model: AccountFollow['sequelize'].models.Account,
 110         required: true,
 111         as: 'AccountFollowing'
 112       }
 113     ]
 114   }
 115
 116   return AccountFollow.findOne(query)
 117 }
 118
 119 listFollowingForApi = function (id: number, start: number, count: number, sort: string) {
 120   const query = {
 121     distinct: true,
 122     offset: start,
 123     limit: count,
 124     order: [ getSort(sort) ],
 125     include: [
 126       {
 127         model: AccountFollow[ 'sequelize' ].models.Account,
 128         required: true,
 129         as: 'AccountFollower',
 130         where: {
 131           id
 132         }
 133       },
 134       {
 135         model: AccountFollow['sequelize'].models.Account,
 136         as: 'AccountFollowing',
 137         required: true,
 138         include: [ AccountFollow['sequelize'].models.Server ]
 139       }
 140     ]
 141   }
 142
 143   return AccountFollow.findAndCountAll(query).then(({ rows, count }) => {
 144     return {
 145       data: rows,
 146       total: count
 147     }
 148   })
 149 }
 150
 151 listFollowersForApi = function (id: number, start: number, count: number, sort: string) {
 152   const query = {
 153     distinct: true,
 154     offset: start,
 155     limit: count,
 156     order: [ getSort(sort) ],
 157     include: [
 158       {
 159         model: AccountFollow[ 'sequelize' ].models.Account,
 160         required: true,
 161         as: 'AccountFollower',
 162         include: [ AccountFollow['sequelize'].models.Server ]
 163       },
 164       {
 165         model: AccountFollow['sequelize'].models.Account,
 166         as: 'AccountFollowing',
 167         required: true,
 168         where: {
 169           id
 170         }
 171       }
 172     ]
 173   }
 174
 175   return AccountFollow.findAndCountAll(query).then(({ rows, count }) => {
 176     return {
 177       data: rows,
 178       total: count
 179     }
 180   })
 181 }
 182
 183 listAcceptedFollowerUrlsForApi = function (accountIds: number[], start?: number, count?: number) {
 184   return createListAcceptedFollowForApiQuery('followers', accountIds, start, count)
 185 }
 186
 187 listAcceptedFollowerSharedInboxUrls = function (accountIds: number[]) {
 188   return createListAcceptedFollowForApiQuery('followers', accountIds, undefined, undefined, 'sharedInboxUrl')
 189 }
 190
 191 listAcceptedFollowingUrlsForApi = function (accountIds: number[], start?: number, count?: number) {
 192   return createListAcceptedFollowForApiQuery('following', accountIds, start, count)
 193 }
 194
 195 // ------------------------------ UTILS ------------------------------
 196
 197 async function createListAcceptedFollowForApiQuery (
 198   type: 'followers' | 'following',
 199   accountIds: number[],
 200   start?: number,
 201   count?: number,
 202   columnUrl = 'url'
 203 ) {
 204   let firstJoin: string
 205   let secondJoin: string
 206
 207   if (type === 'followers') {
 208     firstJoin = 'targetAccountId'
 209     secondJoin = 'accountId'
 210   } else {
 211     firstJoin = 'accountId'
 212     secondJoin = 'targetAccountId'
 213   }
 214
 215   const selections = [ '"Follows"."' + columnUrl + '" AS "url"', 'COUNT(*) AS "total"' ]
 216   const tasks: Promise<any>[] = []
 217
 218   for (const selection of selections) {
 219     let query = 'SELECT ' + selection + ' FROM "Accounts" ' +
 220       'INNER JOIN "AccountFollows" ON "AccountFollows"."' + firstJoin + '" = "Accounts"."id" ' +
 221       'INNER JOIN "Accounts" AS "Follows" ON "AccountFollows"."' + secondJoin + '" = "Follows"."id" ' +
 222       'WHERE "Accounts"."id" = ANY ($accountIds) AND "AccountFollows"."state" = \'accepted\' '
 223
 224     if (count !== undefined) query += 'LIMIT ' + count
 225     if (start !== undefined) query += ' OFFSET ' + start
 226
 227     const options = {
 228       bind: { accountIds },
 229       type: Sequelize.QueryTypes.SELECT
 230     }
 231     tasks.push(AccountFollow['sequelize'].query(query, options))
 232   }
 233
 234   const [ followers, [ { total } ]] = await Promise.all(tasks)
 235   const urls: string[] = followers.map(f => f.url)
 236
 237   return {
 238     data: urls,
 239     total: parseInt(total, 10)
 240   }
 241 }