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import * as Sequelize from 'sequelize'
import { addMethodsToModel } from './utils'
import {
ApplicationClass,
ApplicationAttributes,
ApplicationInstance,
ApplicationMethods
} from './application-interface'
let Application: Sequelize.Model<ApplicationInstance, ApplicationAttributes>
let loadMigrationVersion: ApplicationMethods.LoadMigrationVersion
let updateMigrationVersion: ApplicationMethods.UpdateMigrationVersion
export default function defineApplication (sequelize: Sequelize.Sequelize, DataTypes) {
Application = sequelize.define<ApplicationInstance, ApplicationAttributes>('Application',
{
migrationVersion: {
type: DataTypes.INTEGER,
defaultValue: 0,
allowNull: false,
validate: {
isInt: true
}
}
}
)
const classMethods = [ loadMigrationVersion, updateMigrationVersion ]
addMethodsToModel(Application, classMethods)
return Application
}
// ---------------------------------------------------------------------------
loadMigrationVersion = function (callback: (err: Error, version: number) => void) {
const query = {
attributes: [ 'migrationVersion' ]
}
return Application.findOne(query).asCallback(function (err, data) {
const version = data ? data.migrationVersion : null
return callback(err, version)
})
}
updateMigrationVersion = function (newVersion: number, transaction: any, callback: any) {
const options: Sequelize.UpdateOptions = {
where: {}
}
if (!callback) {
transaction = callback
} else {
options.transaction = transaction
}
return Application.update({ migrationVersion: newVersion }, options).asCallback(callback)
}
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