garrettmills
52382f6bf7
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109 lines
3.1 KiB
JavaScript
109 lines
3.1 KiB
JavaScript
const Model = require('flitter-orm/src/model/Model');
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const uuid = require('uuid/v4');
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class VersionedModel extends Model {
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static get schema() {
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return {
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version_archive: [Object],
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version_num: { type: Number, default: 1 },
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version_create_date: { type: Date, default: () => new Date },
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version_user_id: String,
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}
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}
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__is_version_instantation = false
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__version_base = undefined
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__version_data = undefined
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is_a_version() {
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return this.__is_version_instantation
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}
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version_base() {
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return this.__version_base
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}
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raw_version_data() {
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return this.__version_data
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}
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__initialize_version(base, data = {}) {
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this.__is_version_instantation = true
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this.__version_base = base
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this.__version_data = data
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}
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async version_save(message = undefined, user_id = undefined) {
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await this.new_version(message, user_id)
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return this.save()
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}
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async new_version(message = undefined, user_id = undefined) {
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if ( !this.version_num ) this.version_num = 1
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if ( !this.version_archive ) this.version_archive = []
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this.version_num += 1
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this.version_create_date = new Date()
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this.version_user_id = user_id
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const version_data = await this.cast_to_version_data()
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version_data.version_UUID = uuid()
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version_data.version_message = message
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this.version_archive.push(version_data)
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}
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async cast_to_version_data() {
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const schema = this.constructor.__schema
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const shallow_object = {}
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for ( const prop in schema.schema ) {
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if ( prop in this ) {
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shallow_object[prop] = this[prop]
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}
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}
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const data = await this.__scope_limit_save(schema.cast_to_schema(shallow_object))
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delete data.version_archive
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return data
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}
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async get_version_data(version_num = undefined) {
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if ( typeof version_num === 'undefined' ) {
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return await this.cast_to_version_data()
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} else {
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return this.version_archive.find(data => Number(data.version_num) === Number(version_num))
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}
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}
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has_version(version_num = undefined) {
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return !!this.version_archive.find(data => {
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return Number(data.version_num) === Number(version_num)
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})
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}
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toJSON() {
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const data = {...this}
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delete data.__version_data
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delete data.__version_base
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delete data.__is_version_instantation
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delete data.version_archive
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if ( this.is_a_version() ) {
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data.version_message = this.__version_data.version_message
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data.version_user_id = this.__version_data.version_user_id
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}
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return data
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}
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async as_version(version_num = undefined) {
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const data = await this.get_version_data(version_num)
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console.log('as version data', data, version_num)
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const inst = new this.constructor(data)
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inst.__initialize_version(this, data)
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return inst
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}
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}
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module.exports = exports = VersionedModel
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