import {HTTPKernel} from "../HTTPKernel";
import {MountActivatedRouteHTTPModule} from "./MountActivatedRouteHTTPModule";
import {Request} from "../../lifecycle/Request";
import {ActivatedRoute} from "../../routing/ActivatedRoute";
import {ResponseObject} from "../../routing/Route";
import {AbstractResolvedRouteHandlerHTTPModule} from "./AbstractResolvedRouteHandlerHTTPModule";

export class ExecuteResolvedRoutePreflightHTTPModule extends AbstractResolvedRouteHandlerHTTPModule {
    public static register(kernel: HTTPKernel) {
        kernel.register(this).after(MountActivatedRouteHTTPModule)
    }

    public async apply(request: Request) {
        if ( request.hasInstance(ActivatedRoute) ) {
            const route = <ActivatedRoute> request.make(ActivatedRoute)
            const preflight = route.preflight

            for ( const handler of preflight ) {
                const result: ResponseObject = await handler(request)
                if ( typeof result !== "undefined" ) {
                    await this.applyResponseObject(result, request)
                    request.response.blockingWriteback(true)
                }
            }
        }

        return request
    }
}