291 lines
37 KiB
JavaScript
291 lines
37 KiB
JavaScript
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var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
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return new (P || (P = Promise))(function (resolve, reject) {
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function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
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function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
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function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
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step((generator = generator.apply(thisArg, _arguments || [])).next());
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});
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};
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import MysqlConnectionManager, { query } from "./MysqlConnectionManager";
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import Validator from "./Validator";
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import Query from "./Query";
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import Pagination from "../Pagination";
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export default class Model {
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constructor(data) {
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this.properties = [];
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this.relations = {};
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this.defineProperty('id', new Validator());
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this.defineProperties();
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this.updateWithData(data);
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}
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static getById(id) {
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return __awaiter(this, void 0, void 0, function* () {
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const cachedModel = ModelCache.get(this.table, id);
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if ((cachedModel === null || cachedModel === void 0 ? void 0 : cachedModel.constructor) === this) {
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return cachedModel;
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}
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const models = yield this.models(this.select().where('id', id).first());
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return models.length > 0 ? models[0] : null;
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});
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}
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static paginate(request, perPage = 20) {
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return __awaiter(this, void 0, void 0, function* () {
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let page = request.params.page ? parseInt(request.params.page) : 1;
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let query = this.select().limit(perPage, (page - 1) * perPage).withTotalRowCount();
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if (request.params.sortBy) {
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const dir = request.params.sortDirection;
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query = query.sortBy(request.params.sortBy, dir === 'ASC' || dir === 'DESC' ? dir : undefined);
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}
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else {
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query = query.sortBy('id');
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}
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const models = yield this.models(query);
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// @ts-ignore
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models.pagination = new Pagination(models, page, perPage, models.totalCount);
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return models;
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});
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}
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static select(...fields) {
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return Query.select(this.table, ...fields);
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}
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static update(data) {
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return Query.update(this.table, data);
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}
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static delete() {
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return Query.delete(this.table);
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}
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static models(query) {
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return __awaiter(this, void 0, void 0, function* () {
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const results = yield query.execute();
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const models = [];
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const factory = this.getFactory();
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for (const result of results.results) {
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const cachedModel = ModelCache.get(this.table, result.id);
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if (cachedModel && cachedModel.constructor === this) {
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cachedModel.updateWithData(result);
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models.push(cachedModel);
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}
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else {
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models.push(factory(result));
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}
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}
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// @ts-ignore
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models.totalCount = results.foundRows;
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return models;
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});
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}
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static loadRelation(models, relation, model, localField) {
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return __awaiter(this, void 0, void 0, function* () {
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const loadMap = {};
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const ids = models.map(m => {
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m.relations[relation] = null;
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if (m[localField])
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loadMap[m[localField]] = v => m.relations[relation] = v;
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return m[localField];
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}).filter(id => id);
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for (const v of yield model.models(model.select().whereIn('id', ids))) {
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loadMap[v.id](v);
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}
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});
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}
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static getFactory(factory) {
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if (factory === undefined) {
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factory = this.FACTORY;
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if (factory === undefined)
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factory = data => new this(data);
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}
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return factory;
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}
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defineProperty(name, validator) {
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if (validator === undefined)
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validator = new Validator();
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if (validator instanceof RegExp) {
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const regexp = validator;
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validator = new Validator().regexp(regexp);
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}
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const prop = new ModelProperty(name, validator);
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this.properties.push(prop);
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Object.defineProperty(this, name, {
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get: () => prop.value,
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set: (value) => prop.value = value,
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});
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}
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updateWithData(data) {
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this.id = data['id'];
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for (const prop of this.properties) {
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if (data[prop.name] !== undefined) {
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this[prop.name] = data[prop.name];
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}
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}
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}
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beforeSave(exists, connection) {
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return __awaiter(this, void 0, void 0, function* () {
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});
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}
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afterSave() {
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return __awaiter(this, void 0, void 0, function* () {
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});
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}
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save(connection, postHook) {
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return __awaiter(this, void 0, void 0, function* () {
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yield this.validate(false, connection);
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const exists = yield this.exists();
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let needs_full_update = false;
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if (connection) {
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needs_full_update = yield this.saveTransaction(connection, exists, needs_full_update);
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}
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else {
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needs_full_update = yield MysqlConnectionManager.wrapTransaction((connection) => __awaiter(this, void 0, void 0, function* () { return this.saveTransaction(connection, exists, needs_full_update); }));
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}
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const callback = () => __awaiter(this, void 0, void 0, function* () {
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if (needs_full_update) {
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this.updateWithData((yield this.constructor.select().where('id', this.id).first().execute()).results[0]);
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}
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if (!exists) {
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this.cache();
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}
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yield this.afterSave();
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});
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if (connection) {
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postHook(callback);
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}
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else {
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yield callback();
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}
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});
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}
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saveTransaction(connection, exists, needs_full_update) {
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return __awaiter(this, void 0, void 0, function* () {
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// Before save
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yield this.beforeSave(exists, connection);
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if (exists && this.hasOwnProperty('updated_at')) {
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this.updated_at = new Date();
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}
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const props = [];
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const values = [];
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if (exists) {
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for (const prop of this.properties) {
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if (prop.value !== undefined) {
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props.push(prop.name + '=?');
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values.push(prop.value);
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}
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else {
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needs_full_update = true;
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}
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}
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values.push(this.id);
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yield query(`UPDATE ${this.table} SET ${props.join(',')} WHERE id=?`, values, connection);
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}
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else {
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const props_holders = [];
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for (const prop of this.properties) {
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if (prop.value !== undefined) {
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props.push(prop.name);
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props_holders.push('?');
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values.push(prop.value);
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}
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else {
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needs_full_update = true;
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}
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}
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const result = yield query(`INSERT INTO ${this.table} (${props.join(', ')}) VALUES(${props_holders.join(', ')})`, values, connection);
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this.id = result.other.insertId;
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}
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return needs_full_update;
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});
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}
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static get table() {
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return this.name
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.replace(/(?:^|\.?)([A-Z])/g, (x, y) => '_' + y.toLowerCase())
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.replace(/^_/, '')
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+ 's';
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}
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get table() {
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// @ts-ignore
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return this.constructor.table;
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}
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exists() {
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return __awaiter(this, void 0, void 0, function* () {
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if (!this.id)
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return false;
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const result = yield query(`SELECT 1 FROM ${this.table} WHERE id=? LIMIT 1`, [
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this.id,
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]);
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return result.results.length > 0;
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});
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}
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delete() {
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return __awaiter(this, void 0, void 0, function* () {
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if (!(yield this.exists()))
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throw new Error('This model instance doesn\'t exist in DB.');
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yield query(`DELETE FROM ${this.table} WHERE id=?`, [
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this.id,
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]);
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ModelCache.forget(this);
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this.id = undefined;
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});
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}
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validate(onlyFormat = false, connection) {
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return __awaiter(this, void 0, void 0, function* () {
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return yield Promise.all(this.properties.map(prop => prop.validate(onlyFormat, connection)));
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});
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}
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cache() {
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ModelCache.cache(this);
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}
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relation(name) {
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if (this.relations[name] === undefined)
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throw new Error('Model not loaded');
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return this.relations[name];
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}
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}
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class ModelProperty {
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constructor(name, validator) {
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this.name = name;
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this.validator = validator;
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}
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validate(onlyFormat, connection) {
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return __awaiter(this, void 0, void 0, function* () {
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return yield this.validator.execute(this.name, this.value, onlyFormat, connection);
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});
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}
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get value() {
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return this.val;
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}
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set value(val) {
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this.val = val;
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}
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}
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export class ModelCache {
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static cache(instance) {
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if (instance.id === undefined)
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throw new Error('Cannot cache an instance with an undefined id.');
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let tableCache = this.caches[instance.table];
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if (!tableCache)
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tableCache = this.caches[instance.table] = {};
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if (!tableCache[instance.id])
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tableCache[instance.id] = instance;
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}
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static forget(instance) {
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if (instance.id === undefined)
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throw new Error('Cannot forget an instance with an undefined id.');
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let tableCache = this.caches[instance.table];
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if (!tableCache)
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return;
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if (tableCache[instance.id])
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delete tableCache[instance.id];
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}
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static all(table) {
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return this.caches[table];
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}
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static get(table, id) {
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const tableCache = this.all(table);
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if (!tableCache)
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return undefined;
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return tableCache[id];
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}
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}
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ModelCache.caches = {};
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export const EMAIL_REGEX = /^[a-zA-Z0-9.!#$%&'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+$/;
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