import {Request} from '../Request.ts'
import Kernel from './Kernel.ts'
import AppClass from '../../lifecycle/AppClass.ts'

/**
 * Base class for HTTP kernel modules.
 * @extends AppClass
 */
export default class Module extends AppClass {
    /**
     * Returns true if the given module should be applied to the incoming request.
     * @param {Request} request
     * @return Promise<boolean>
     */
    public async match(request: Request): Promise<boolean> {
        return true
    }

    /**
     * Apply the module to the incoming request.
     * @param {Request} request
     * @return Promise<Request>
     */
    public async apply(request: Request): Promise<Request> {
        return request
    }

    /**
     * Register this module with the given HTTP kernel.
     * @param {Kernel} kernel
     */
    public static register(kernel: Kernel) {
        kernel.register(this).before()
    }
}