import { Handlers } from "$fresh/server.ts";
import { get_pages_meta } from "../../../pages.ts";
import { Status, STATUS_TEXT } from "https://deno.land/std@0.195.0/http/mod.ts";

export const handler: Handlers = {
  async GET(req, _ctx): Promise<Response> {
    const headers = new Headers({
        "content-type": "application/json"
    });
    const [body, mtime] = await get_pages_meta();
    headers.set("last-modified", new Date(mtime).toUTCString());
    console.log("aaa");
    const ifModifiedSinceValue = req.headers.get("if-modified-since");
    if ( ifModifiedSinceValue &&
        mtime != new Date(ifModifiedSinceValue).getTime()
    ){
        return new Response(null, {
            status: Status.NotModified,
            statusText: STATUS_TEXT[Status.NotModified]
        })
    }
    return new Response(JSON.stringify(body), {headers});
  },
};