import {Singleton, Inject} from "@extollo/di"
import {UniversalPath, Collection} from "@extollo/util"
import {Unit} from "../lifecycle/Unit"
import {Logging} from "./Logging"
import {Route} from "../http/routing/Route";
import {HTTPMethod} from "../http/lifecycle/Request";

@Singleton()
export class Routing extends Unit {
    @Inject()
    protected readonly logging!: Logging

    protected compiledRoutes: Collection<Route> = new Collection<Route>()

    public async up() {
        for await ( const entry of this.path.walk() ) {
            if ( !entry.endsWith('.routes.js') ) {
                this.logging.debug(`Skipping routes file with invalid suffix: ${entry}`)
                continue
            }

            this.logging.info(`Importing routes from: ${entry}`)
            await import(entry)
        }

        this.logging.info('Compiling routes...')
        this.compiledRoutes = new Collection<Route>(await Route.compile())

        this.logging.info(`Compiled ${this.compiledRoutes.length} route(s).`)
        this.compiledRoutes.each(route => {
            this.logging.verbose(`${route}`)
        })
    }

    public match(method: HTTPMethod, path: string): Route | undefined {
        return this.compiledRoutes.firstWhere(route => {
            return route.match(method, path)
        })
    }

    public get path(): UniversalPath {
        return this.app().appPath('http', 'routes')
    }
}