nosql-json-database
Version:
package for building simple nosql databases using json files
94 lines (93 loc) • 3.83 kB
JavaScript
"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const json_database_collection_1 = __importDefault(require("./json-database-collection"));
const pluralize_1 = __importDefault(require("pluralize"));
const fs_1 = __importDefault(require("fs"));
const json_database_1 = __importDefault(require("./json-database"));
const path_1 = __importDefault(require("path"));
class Container extends json_database_1.default {
constructor(location) {
super();
this.collections = [];
/**
* checks for all current database collections within memory
*/
this.checkForDatabaseCollections = () => {
const files = fs_1.default.readdirSync(this.folderLocation);
const titles = files.map((item) => item.split(".")[0]);
this.collections = [...new Set([...this.collections, ...titles])];
};
/**
* reset the whole database container, by deleting all the collections contained
* within the container
*/
this.resetDatabase = () => {
try {
const files = fs_1.default.readdirSync(this.folderLocation);
for (const file in files) {
const item = files[file];
const filepath = path_1.default.join(this.folderLocation, item);
fs_1.default.unlinkSync(filepath);
}
this.collections = [];
}
catch (error) {
throw error;
}
};
/**
* delete the database entirely and remove all the contents of the container
*/
this.deleteDatabase = () => {
this.resetDatabase();
fs_1.default.rmdirSync(this.folderLocation);
};
/**
* create the database container, if the container doesnt exist
* if it does it doesn't perform anything
*/
this.createDatabase = () => {
const folder = this.folderLocation;
if (!this.checkIfFolderExists(folder))
fs_1.default.mkdirSync(folder);
this.checkForDatabaseCollections();
};
/**
* delete a particular collection within the database container and remove all the contents
* @param title string
*/
this.deleteCollection = (title) => {
const modelpath = this.getCollectionFilePath(this.folderLocation, title);
fs_1.default.unlinkSync(modelpath);
this.collections = this.collections.filter((item) => item !== title);
};
/**
* takes the title and creates a new collection within the particular database
* this adds the value to the collections list within the database
* @param name string
* @returns JsonDatabaseCollection<T>
*/
this.createCollection = (name) => {
const corrected = (0, pluralize_1.default)(name);
const newCollection = new json_database_collection_1.default(corrected, this);
if (!this.collections.includes(corrected))
this.collections.push(corrected);
return newCollection;
};
if (location) {
this.loc = location;
const folder = path_1.default.join(location, "/database");
this.folderLocation = folder;
}
else {
const folderPath = this.getFunctionCallingLocation();
const foldername = path_1.default.join(folderPath, "/database");
this.folderLocation = foldername;
}
this.createDatabase();
}
}
exports.default = Container;