main.rs

use actix_web::web::Json;
use actix_web::{get, App, HttpServer, Result};
use chrono::prelude::*;
use log::LevelFilter;
use serde::Serialize;
use std::io;

fn main() -> Result<(), io::Error> {
    env_logger::builder().filter_level(LevelFilter::Info).init();
    let service = HttpServer::new(|| App::new().service(today))
        .bind("127.0.0.1:8089")
        .expect("Error in server configuration");
    service.run()
}

#[derive(Serialize, Debug)]
struct TodayResponse {
    pub d: String,
    pub tz: String,
}

#[get("/time/today")]
fn today() -> Json<TodayResponse> {
    let today = Local::today();
    let result = TodayResponse {
        d: today.format("yyyy-MM-dd").to_string(),
        tz: today.offset().to_string(),
    };
    Json(result)
}