#[macro_use] extern crate rocket;
use rocket_dyn_templates::{context, Template};
use blockchain_time::{BlockchainInfo, BlockchainSupported, update_all_blockheights, time_to_blockheight_specific_chain};
use chrono::prelude::*;

#[get("/")]
fn index() -> Template {
    let blockchain_infos: Vec<(String, BlockchainInfo)> = vec!{
        ("BSV".to_string(), BlockchainSupported::BSV.into()),
        ("BTC".to_string(), BlockchainSupported::BTC.into()),
        ("XMR".to_string(), BlockchainSupported::XMR.into()),
        ("ETH".to_string(), BlockchainSupported::ETH.into()),
    };
    let context = context! {
        blockchain_infos
    };
    Template::render("index", context)
}

#[get("/update_blockchains")]
fn update_blockchains() -> Template {
    update_all_blockheights();
    Template::render("update_complete", context!{})
}


#[get("/to_blockchain_time?<input_datetime>")]
fn to_blockchain_time(input_datetime: &str) -> Template {
    let dt = NaiveDateTime::parse_from_str(input_datetime, "%FT%R");
    let dt = match dt {
        Ok(dt) => {
            dt.and_utc()
        },
        Err(e) => {
            println!("error: {}", e);
            panic!();
        }
    };
    let blocktimes = vec!{
        ("BSV".to_string(), time_to_blockheight_specific_chain(dt, BlockchainSupported::BSV)),
        ("BTC".to_string(), time_to_blockheight_specific_chain(dt, BlockchainSupported::BTC)),
        ("XMR".to_string(), time_to_blockheight_specific_chain(dt, BlockchainSupported::XMR)),
        ("ETH".to_string(), time_to_blockheight_specific_chain(dt, BlockchainSupported::ETH)),
    };
    let context = context!{
        blocktimes
    };
    println!("{:?}", context);
    Template::render("blockchain_time_results", context)
}

#[launch]
fn rocket() -> _ {
    rocket::build().mount("/", routes![index, update_blockchains, to_blockchain_time])
        .attach(Template::fairing())
}