136 lines
3.0 KiB
JavaScript
136 lines
3.0 KiB
JavaScript
'use strict'
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const values = require('lodash/values')
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const constants = require('../initializers/constants')
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// ---------------------------------------------------------------------------
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module.exports = function (sequelize, DataTypes) {
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const Request = sequelize.define('Request',
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{
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request: {
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type: DataTypes.JSON,
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allowNull: false
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},
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endpoint: {
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type: DataTypes.ENUM(values(constants.REQUEST_ENDPOINTS)),
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allowNull: false
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}
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},
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{
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classMethods: {
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associate,
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listWithLimitAndRandom,
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countTotalRequests,
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removeAll,
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removeWithEmptyTo
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}
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}
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)
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return Request
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}
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// ------------------------------ STATICS ------------------------------
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function associate (models) {
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this.belongsToMany(models.Pod, {
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foreignKey: {
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name: 'requestId',
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allowNull: false
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},
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through: models.RequestToPod,
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onDelete: 'CASCADE'
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})
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}
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function countTotalRequests (callback) {
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const query = {
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include: [ this.sequelize.models.Pod ]
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}
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return this.count(query).asCallback(callback)
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}
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function listWithLimitAndRandom (limitPods, limitRequestsPerPod, callback) {
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const self = this
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const Pod = this.sequelize.models.Pod
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Pod.listRandomPodIdsWithRequest(limitPods, 'RequestToPods', function (err, podIds) {
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if (err) return callback(err)
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// We don't have friends that have requests
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if (podIds.length === 0) return callback(null, [])
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// The first x requests of these pods
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// It is very important to sort by id ASC to keep the requests order!
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const query = {
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order: [
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[ 'id', 'ASC' ]
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],
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include: [
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{
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model: self.sequelize.models.Pod,
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where: {
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id: {
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$in: podIds
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}
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}
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}
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]
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}
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self.findAll(query).asCallback(function (err, requests) {
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if (err) return callback(err)
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const requestsGrouped = groupAndTruncateRequests(requests, limitRequestsPerPod)
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return callback(err, requestsGrouped)
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})
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})
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}
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function removeAll (callback) {
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// Delete all requests
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this.truncate({ cascade: true }).asCallback(callback)
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}
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function removeWithEmptyTo (callback) {
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if (!callback) callback = function () {}
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const query = {
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where: {
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id: {
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$notIn: [
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this.sequelize.literal('SELECT "requestId" FROM "RequestToPods"')
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]
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}
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}
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}
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this.destroy(query).asCallback(callback)
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}
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// ---------------------------------------------------------------------------
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function groupAndTruncateRequests (requests, limitRequestsPerPod) {
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const requestsGrouped = {}
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requests.forEach(function (request) {
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request.Pods.forEach(function (pod) {
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if (!requestsGrouped[pod.id]) requestsGrouped[pod.id] = []
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if (requestsGrouped[pod.id].length < limitRequestsPerPod) {
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requestsGrouped[pod.id].push({
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request,
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pod
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})
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}
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})
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})
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return requestsGrouped
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}
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