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application.ts
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application.ts
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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,
SSR,
} from "./types.ts";
interface Application {
static(path: string, options?: unknown): 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 } = appHandler;
export function application(ssr?: SSR): Application {
const appRouter = router();
const appMiddleware = middleware();
let appDeps: Dependency = dependency();
let server: Server;
let staticDirPath: string;
if (ssr) ssr.createBundle();
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 = {
static: (path: string) => {
staticDirPath = path;
return 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(
staticDirPath,
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;
}