const Unit = require('libflitter/Unit')
const cors = require('cors')

/*
 * The Miscellaneous Unit
 * -------------------------------------------------------------
 * This is a Unit file where you should make any modifications that
 * your application may need such as custom Express add-ons. Changes
 * here are loaded after the core Flitter units, but before the other
 * units (secondary, custom, error, and App), so they are available to
 * other units in the stack.
 */
class CorsUnit extends Unit {

    /*
     * Initializes the unit class.
     * This is called OUTSIDE of a Flitter context,
     * so no other contexts are available. Modifications here
     * take place before any part of Flitter is loaded or available.
     */
    constructor(){
        super()


    }

    /*
     * Initialize the actual Unit.
     * This is where most of the changes will go.
     * This is provided an instance of the Express app
     * so any custom changes can be made. The core Flitter
     * contexts are available here, so things like config(),
     * model(), etc. work.
     */
    async go(app, context){
        app.express.use(cors());
    }

    name(){
        return "cors"
    }

}

module.exports = exports = CorsUnit