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/** |
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* Database |
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*/ |
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'use strict' |
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const fs = require('fs') |
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const _ = require('lodash') |
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const Database = () => { |
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const __ = { |
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getDatabase: database => { |
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if (!fs.existsSync(database)) { |
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return {} |
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} |
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return JSON.parse(fs.readFileSync(database, 'utf8')) |
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} |
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} |
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const proto = { |
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data: '', |
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database: '', |
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/** |
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* Set file database. |
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* |
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* @param {string} pathname |
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*/ |
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setFile: function (pathname) { |
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let regex = new RegExp(/\.json$/) |
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if (!regex.test(pathname)) { |
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throw new Error('The database file must be a json file') |
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} |
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this.database = pathname |
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return this |
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}, |
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/** |
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* Add a key and value for database. |
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* |
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* @param {string} key |
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* @param {string} value |
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*/ |
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add: function (key, value) { |
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this.data = __.getDatabase(this.database) |
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this.data[key] = value |
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return this |
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}, |
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/** |
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* Add values to env vars from node. |
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* |
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* @param {object} data |
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*/ |
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addEnv: function (data) { |
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if (typeof data !== 'object') { |
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throw new Error('data must be an object') |
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} |
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_.map(data, (value, key) => { |
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process.env[key] = value |
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}) |
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}, |
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/** |
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* Add multiples keys to database. |
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* |
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* @param {object} object |
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*/ |
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massive: function (data) { |
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if (typeof data !== 'object') { |
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throw new Error('data must be an object') |
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} |
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_.map(data, (value, key) => this.add(key, value)) |
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return this |
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}, |
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/** |
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* Return an key from database or all data. |
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* |
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* @param {string} item |
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*/ |
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get: function (item) { |
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let db = __.getDatabase(this.database) |
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if (item !== undefined && !(item in db)) { |
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throw new Error(`${item} is undefined`) |
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} |
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return db[item] || db |
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}, |
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/** |
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* Store data to db.json. |
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*/ |
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store: function () { |
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fs.writeFile(this.database, JSON.stringify(this.data), err => { |
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if (err) { |
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throw new Error(err) |
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} |
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return |
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}) |
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} |
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} |
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113
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return Object.create(proto) |
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} |
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116
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module.exports = Database() |
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moov-org /
database
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