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import { each } from 'async'
import * as Sequelize from 'sequelize'
import { addMethodsToModel } from './utils'
import {
TagClass,
TagInstance,
TagAttributes,
TagMethods
} from './tag-interface'
let Tag: Sequelize.Model<TagInstance, TagAttributes>
let findOrCreateTags: TagMethods.FindOrCreateTags
export default function (sequelize, DataTypes) {
Tag = sequelize.define('Tag',
{
name: {
type: DataTypes.STRING,
allowNull: false
}
},
{
timestamps: false,
indexes: [
{
fields: [ 'name' ],
unique: true
}
]
}
)
const classMethods = [
associate,
findOrCreateTags
]
addMethodsToModel(Tag, classMethods)
return Tag
}
// ---------------------------------------------------------------------------
function associate (models) {
Tag.belongsToMany(models.Video, {
foreignKey: 'tagId',
through: models.VideoTag,
onDelete: 'cascade'
})
}
findOrCreateTags = function (tags, transaction, callback) {
if (!callback) {
callback = transaction
transaction = null
}
const tagInstances = []
each(tags, function (tag, callbackEach) {
const query: any = {
where: {
name: tag
},
defaults: {
name: tag
}
}
if (transaction) query.transaction = transaction
Tag.findOrCreate(query).asCallback(function (err, res) {
if (err) return callbackEach(err)
// res = [ tag, isCreated ]
const tag = res[0]
tagInstances.push(tag)
return callbackEach()
})
}, function (err) {
return callback(err, tagInstances)
})
}
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