88 lines
2.0 KiB
JavaScript
88 lines
2.0 KiB
JavaScript
/**
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* @file Database configuration and model initialization for Sequelize.
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* Initializes the Sequelize ORM based on environment settings and loads database models.
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* Provides access to the Sequelize instance and loaded models.
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*/
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'use strict';
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const fs = require('fs');
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const path = require('path');
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const Sequelize = require('sequelize');
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const process = require('process');
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/**
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* Base filename of the current file
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* @type {string}
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*/
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const basename = path.basename(__filename);
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/**
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* Current environment (development/production/test)
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* @type {string}
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*/
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const env = process.env.NODE_ENV || 'development';
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/**
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* Database configuration for the current environment
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* @type {Object}
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*/
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const config = require(__dirname + '/../config/config.js')[env];
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/**
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* Object containing all database models and Sequelize instances
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* @type {Object}
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*/
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const db = {};
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/**
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* Sequelize instance for database connection
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* @type {Sequelize}
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*/
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let sequelize;
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// Initialize Sequelize with environment config or direct config
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if (config.use_env_variable) {
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sequelize = new Sequelize(process.env[config.use_env_variable], config);
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} else {
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sequelize = new Sequelize(config.database, config.username, config.password, config);
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}
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/**
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* Load all model files from current directory and initialize them
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*/
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fs
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.readdirSync(__dirname)
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.filter(file => {
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return (
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file.indexOf('.') !== 0 &&
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file !== basename &&
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file.slice(-3) === '.js' &&
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file.indexOf('.test.js') === -1
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);
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})
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.forEach(file => {
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/**
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* Initialize model from file
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* @type {Sequelize.Model}
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*/
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const model = require(path.join(__dirname, file))(sequelize, Sequelize.DataTypes);
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db[model.name] = model;
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});
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/**
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* Set up model associations if defined
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*/
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Object.keys(db).forEach(modelName => {
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if (db[modelName].associate) {
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db[modelName].associate(db);
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}
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});
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// Add Sequelize instances to db object
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db.sequelize = sequelize;
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db.Sequelize = Sequelize;
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module.exports = db;
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