mirror of
https://github.com/Ride-The-Lightning/RTL
synced 2024-10-31 09:20:27 +00:00
bea5980c6f
Release 0.12.0
213 lines
8.3 KiB
TypeScript
213 lines
8.3 KiB
TypeScript
import * as fs from 'fs';
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import { join, dirname, sep } from 'path';
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import { fileURLToPath } from 'url';
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import { Common, CommonService } from '../utils/common.js';
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import { Logger, LoggerService } from '../utils/logger.js';
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import { Collections, CollectionsEnum, validateOffer } from '../models/database.model.js';
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import { CommonSelectedNode } from '../models/config.model.js';
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export class DatabaseService {
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public common: CommonService = Common;
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public logger: LoggerService = Logger;
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public dbDirectory = join(dirname(fileURLToPath(import.meta.url)), '..', '..', 'database');
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public nodeDatabase: { id?: { adapter: DatabaseAdapter, data: Collections } } = {};
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constructor() { }
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loadDatabase(selectedNode: CommonSelectedNode) {
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try {
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if (!this.nodeDatabase[selectedNode.index]) {
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this.nodeDatabase[selectedNode.index] = { adapter: null, data: null };
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}
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this.nodeDatabase[selectedNode.index].adapter = new DatabaseAdapter(this.dbDirectory, 'rtldb', selectedNode);
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this.nodeDatabase[selectedNode.index].data = this.nodeDatabase[selectedNode.index].adapter.fetchData();
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} catch (err) {
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this.logger.log({ selectedNode: selectedNode, level: 'ERROR', fileName: 'Database', msg: 'Database Load Error', error: err });
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}
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}
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create(selectedNode: CommonSelectedNode, collectionName: CollectionsEnum, newDocument: any) {
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return new Promise((resolve, reject) => {
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try {
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if (!selectedNode || !selectedNode.index) {
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reject(new Error('Selected Node Config Not Found.'));
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}
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const validationRes = this.validateDocument(CollectionsEnum.OFFERS, newDocument);
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if (!validationRes.isValid) {
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reject(validationRes.error);
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} else {
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this.nodeDatabase[selectedNode.index].data[collectionName].push(newDocument);
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this.saveDatabase(+selectedNode.index);
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resolve(newDocument);
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}
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} catch (errRes) {
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reject(errRes);
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}
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});
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}
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update(selectedNode: CommonSelectedNode, collectionName: CollectionsEnum, updatedDocument: any, documentFieldName: string, documentFieldValue: string) {
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return new Promise((resolve, reject) => {
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try {
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if (!selectedNode || !selectedNode.index) {
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reject(new Error('Selected Node Config Not Found.'));
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}
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let foundDocIdx = -1;
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let foundDoc = null;
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if (this.nodeDatabase[selectedNode.index].data[collectionName]) {
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foundDocIdx = this.nodeDatabase[selectedNode.index].data[collectionName].findIndex((document: any) => document[documentFieldName] === documentFieldValue);
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foundDoc = foundDocIdx > -1 ? JSON.parse(JSON.stringify(this.nodeDatabase[selectedNode.index].data[collectionName][foundDocIdx])) : null;
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}
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if (foundDocIdx > -1 && foundDoc) {
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for (const docKey in updatedDocument) {
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if (Object.prototype.hasOwnProperty.call(updatedDocument, docKey)) {
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foundDoc[docKey] = updatedDocument[docKey];
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}
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}
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updatedDocument = foundDoc;
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}
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const validationRes = this.validateDocument(CollectionsEnum.OFFERS, updatedDocument);
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if (!validationRes.isValid) {
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reject(validationRes.error);
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} else {
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if (foundDocIdx > -1) {
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this.nodeDatabase[selectedNode.index].data[collectionName].splice(foundDocIdx, 1, updatedDocument);
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} else {
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if (!this.nodeDatabase[selectedNode.index].data[collectionName]) {
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this.nodeDatabase[selectedNode.index].data[collectionName] = [];
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}
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this.nodeDatabase[selectedNode.index].data[collectionName].push(updatedDocument);
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}
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this.saveDatabase(+selectedNode.index);
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resolve(updatedDocument);
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}
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} catch (errRes) {
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reject(errRes);
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}
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});
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}
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find(selectedNode: CommonSelectedNode, collectionName: CollectionsEnum, documentFieldName?: string, documentFieldValue?: string) {
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return new Promise((resolve, reject) => {
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try {
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if (!selectedNode || !selectedNode.index) {
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reject(new Error('Selected Node Config Not Found.'));
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}
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if (documentFieldName && documentFieldValue) {
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resolve(this.nodeDatabase[selectedNode.index].data[collectionName].find((document: any) => document[documentFieldName] === documentFieldValue));
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} else {
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resolve(this.nodeDatabase[selectedNode.index].data[collectionName]);
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}
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} catch (errRes) {
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reject(errRes);
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}
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});
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}
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destroy(selectedNode: CommonSelectedNode, collectionName: CollectionsEnum, documentFieldName: string, documentFieldValue: string) {
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return new Promise((resolve, reject) => {
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try {
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if (!selectedNode || !selectedNode.index) {
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reject(new Error('Selected Node Config Not Found.'));
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}
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const removeDocIdx = this.nodeDatabase[selectedNode.index].data[collectionName].findIndex((document) => document[documentFieldName] === documentFieldValue);
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if (removeDocIdx > -1) {
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this.nodeDatabase[selectedNode.index].data[collectionName].splice(removeDocIdx, 1);
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} else {
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reject(new Error('Unable to delete, document not found.'));
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}
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this.saveDatabase(+selectedNode.index);
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resolve(documentFieldValue);
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} catch (errRes) {
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reject(errRes);
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}
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});
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}
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validateDocument(collectionName: CollectionsEnum, documentToValidate: any) {
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switch (collectionName) {
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case CollectionsEnum.OFFERS:
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return validateOffer(documentToValidate);
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default:
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return ({ isValid: false, error: 'Collection does not exist' });
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}
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}
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saveDatabase(nodeIndex: number) {
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try {
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const selNode = this.nodeDatabase[nodeIndex] && this.nodeDatabase[nodeIndex].adapter && this.nodeDatabase[nodeIndex].adapter.selNode ? this.nodeDatabase[nodeIndex].adapter.selNode : null;
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if (!this.nodeDatabase[nodeIndex]) {
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this.logger.log({ selectedNode: selNode, level: 'ERROR', fileName: 'Database', msg: 'Database Save Error: Selected Node Setup Not Found.' });
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throw new Error('Database Save Error: Selected Node Setup Not Found.');
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}
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this.nodeDatabase[nodeIndex].adapter.saveData(this.nodeDatabase[nodeIndex].data);
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this.logger.log({ selectedNode: this.nodeDatabase[nodeIndex].adapter.selNode, level: 'INFO', fileName: 'Database', msg: 'Database Saved' });
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return true;
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} catch (err) {
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const selNode = this.nodeDatabase[nodeIndex] && this.nodeDatabase[nodeIndex].adapter && this.nodeDatabase[nodeIndex].adapter.selNode ? this.nodeDatabase[nodeIndex].adapter.selNode : null;
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this.logger.log({ selectedNode: selNode, level: 'ERROR', fileName: 'Database', msg: 'Database Save Error', error: err });
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return new Error(err);
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}
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}
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unloadDatabase(nodeIndex: number) {
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this.saveDatabase(nodeIndex);
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this.nodeDatabase[nodeIndex] = null;
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}
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}
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export class DatabaseAdapter {
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private dbFile = '';
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constructor(public dbDirectoryPath: string, public fileName: string, private selNode: CommonSelectedNode = null) {
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this.dbFile = dbDirectoryPath + sep + fileName + '-node-' + selNode.index + '.json';
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}
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fetchData() {
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try {
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if (!fs.existsSync(this.dbDirectoryPath)) {
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fs.mkdirSync(this.dbDirectoryPath);
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}
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} catch (err) {
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return new Error('Unable to Create Directory Error ' + JSON.stringify(err));
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}
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try {
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if (!fs.existsSync(this.dbFile)) {
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fs.writeFileSync(this.dbFile, '{}');
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}
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} catch (err) {
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return new Error('Unable to Create Database File Error ' + JSON.stringify(err));
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}
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try {
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const dataFromFile = fs.readFileSync(this.dbFile, 'utf-8');
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return !dataFromFile ? null : (<Collections>JSON.parse(dataFromFile));
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} catch (err) {
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return new Error('Database Read Error ' + JSON.stringify(err));
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}
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}
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getSelNode() {
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return this.selNode;
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}
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saveData(data: any) {
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try {
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if (data) {
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const tempFile = this.dbFile + '.tmp';
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fs.writeFileSync(tempFile, JSON.stringify(data, null, 2));
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fs.renameSync(tempFile, this.dbFile);
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}
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return true;
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} catch (err) {
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return new Error('Database Write Error ' + JSON.stringify(err));
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}
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}
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}
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export const Database = new DatabaseService();
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