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import { ServeInit, Server } from "./deps.ts"import { handler } from "./handler.ts"import { middleware } from "./middleware.ts"import { router } from "./router.ts"import { dependency } from "./container.ts"import {  Dependency,  HandlerArgument,  MiddlewareArgument,  PathArgument,} from "./types.ts"
interface Application {  getDeps(key: string): unknown  serve(options?: ServeInit): Promise<void>  get(path: PathArgument, ...handlers: HandlerArgument[]): Application  post(path: PathArgument, ...handlers: HandlerArgument[]): Application  put(path: PathArgument, ...handlers: HandlerArgument[]): Application  delete(path: PathArgument, ...handlers: HandlerArgument[]): Application  head(path: PathArgument, ...handlers: HandlerArgument[]): Application  options(path: PathArgument, ...handlers: HandlerArgument[]): Application  patch(path: PathArgument, ...handlers: HandlerArgument[]): Application  use(...middlewares: MiddlewareArgument[]): Application  close(): void}
const appHandler = handler()export const { getParams, getParam } = appHandlerexport function application(): Application {  const appRouter = router()  const appMiddleware = middleware()  let appDeps: Dependency = dependency()  let server: Server
  function containDeps(array: MiddlewareArgument[]) {    for (let index = 0; index < array.length; index++) {      const element = array[index]      if (isDeps(element)) {        return true      }    }    return false  }
  function isDeps(first: MiddlewareArgument) {    const deps = <Dependency>first    return deps.deps !== undefined  }
  const app = {    deps: appDeps.deps,    getDeps: (key: string) => {      return appDeps.get(key)    },    setDeps: (key: string, val: unknown) => {      appDeps.set(key, val)      return app    },    close: () => {      return server.close()    },    serve: (options: ServeInit = {}) => {      server = new Server({        onError: options.onError,        hostname: options.hostname,        port: options.port,        handler: appHandler.createHandler(          appRouter.routes,          appMiddleware.middlewares,        ),      })      const port = options.port ?? 8000      const listener = Deno.listen({ port })      return server.serve(listener)    },    get: (path: PathArgument, ...handlers: HandlerArgument[]) => {      appRouter.get(path, ...handlers)      return app    },    post: (path: PathArgument, ...handlers: HandlerArgument[]) => {      appRouter.post(path, ...handlers)      return app    },    put: (path: PathArgument, ...handlers: HandlerArgument[]) => {      appRouter.put(path, ...handlers)      return app    },    delete: (path: PathArgument, ...handlers: HandlerArgument[]) => {      appRouter.delete(path, ...handlers)      return app    },    head: (path: PathArgument, ...handlers: HandlerArgument[]) => {      appRouter.head(path, ...handlers)      return app    },    patch: (path: PathArgument, ...handlers: HandlerArgument[]) => {      appRouter.patch(path, ...handlers)      return app    },    options: (path: PathArgument, ...handlers: HandlerArgument[]) => {      appRouter.options(path, ...handlers)      return app    },    use: (...middlewares: MiddlewareArgument[]) => {      const [first, ...rest] = middlewares      if (isDeps(first)) {        appDeps = <Dependency>first        if (containDeps(rest)) {          throw Error("Dependency only used at first argument")        }      } else {        appMiddleware.useMiddleware(...middlewares)      }      return app    },  }
  return app}