safe time now : automatic update something on safe

gistfile1.txt

// This is a frankeinstein of the simulate_browser and nfs-api from Maidsafe safe_client_libs
//
// https://github.com/maidsafe/safe_client_libs
//
// Copyright 2017 wrnice under the GPL licence

// Original Maidsafe Licence follows :

// Copyright 2015 MaidSafe.net limited.
//
// This SAFE Network Software is licensed to you under (1) the MaidSafe.net Commercial License,
// version 1.0 or later, or (2) The General Public License (GPL), version 3, depending on which
// licence you accepted on initial access to the Software (the "Licences").
//
// By contributing code to the SAFE Network Software, or to this project generally, you agree to be
// bound by the terms of the MaidSafe Contributor Agreement, version 1.0.  This, along with the
// Licenses can be found in the root directory of this project at LICENSE, COPYING and CONTRIBUTOR.
//
// Unless required by applicable law or agreed to in writing, the SAFE Network Software distributed
// under the GPL Licence is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.
//
// Please review the Licences for the specific language governing permissions and limitations
// relating to use of the SAFE Network Software.

/*
#![forbid(bad_style, exceeding_bitshifts, mutable_transmutes, no_mangle_const_items,
          unknown_crate_types, warnings)]
 
#![deny(deprecated, improper_ctypes, missing_docs,
        non_shorthand_field_patterns, overflowing_literals, plugin_as_library,
        private_no_mangle_fns, private_no_mangle_statics, stable_features, unconditional_recursion,
        unknown_lints, unsafe_code, unused, unused_allocation, unused_attributes,
        unused_comparisons, unused_features, unused_parens, while_true)]

#![warn(trivial_casts, trivial_numeric_casts, unused_extern_crates, unused_import_braces,
        unused_qualifications, unused_results)]
        */
#![allow(box_pointers, fat_ptr_transmutes, missing_copy_implementations,
         missing_debug_implementations, variant_size_differences)]

#![cfg_attr(feature="clippy", feature(plugin))]
#![cfg_attr(feature="clippy", plugin(clippy))]
#![cfg_attr(feature="clippy", deny(clippy))]
#![cfg_attr(feature="clippy", allow(use_debug, print_stdout))]

#![allow(unused_extern_crates)]#[macro_use]
extern crate maidsafe_utilities;
extern crate time;
extern crate routing;
extern crate safe_core;
#[macro_use]
extern crate unwrap;
#[macro_use]
extern crate chan;

use routing::XOR_NAME_LEN;
use safe_core::core::client::Client;
use safe_core::nfs::{self, AccessLevel};
use safe_core::nfs::directory_listing::DirectoryListing;
use safe_core::nfs::errors::NfsError;
use safe_core::nfs::helper::directory_helper::DirectoryHelper;
use safe_core::nfs::helper::file_helper::FileHelper;
use safe_core::nfs::helper::writer::Mode;
use safe_core::dns::dns_operations::DnsOperations;
use safe_core::dns::errors::DnsError;
use std::sync::{Arc, Mutex};

fn login_account() -> Result<Client, NfsError> {
    let mut secret_0 = String::new();
    let mut secret_1 = String::new();

    println!("\n\tLogin");
    println!("\t================");

    println!("\n------------ Enter account-locator ---------------");
    let _ = std::io::stdin().read_line(&mut secret_0);
    secret_0 = secret_0.trim().to_string();

    println!("\n------------ Enter password ---------------");
    let _ = std::io::stdin().read_line(&mut secret_1);
    secret_1 = secret_1.trim().to_string();
    
    // Log into the account
    println!("\nTrying to log into the created account using supplied credentials ...");
    let client = try!(Client::log_in(&secret_0, &secret_1));
    println!("Account Login Successful !!");
    Ok(client)
}

fn get_root_directory(client: Arc<Mutex<Client>>) -> Result<DirectoryListing, NfsError> {
    let directory_helper = DirectoryHelper::new(client.clone());
    directory_helper.get_user_root_directory_listing()
}

fn update_home_page(client: Arc<Mutex<Client>>,
                               dns_operations: &DnsOperations)
                               -> Result<(), DnsError> {

    let long_name = "now";
    let service_name = "time";

    println!("Fetching data...");

    let dir_key =
        try!(dns_operations.get_service_home_directory_key(&long_name, &service_name, None));
    let directory_helper = DirectoryHelper::new(client.clone());
    let dir_listing = try!(directory_helper.get(&dir_key));
 
    let file = try!(dir_listing.get_files()
        .iter()
        .find(|a| *a.get_name() == "index.html".to_string())
        .ok_or(DnsError::Unexpected("Could not find homepage !!".to_string())));

    let hour = time::now_utc().tm_hour.to_string();
    let min = time::now_utc().tm_min.to_string();    
    let mesg = "Time is now : ".to_string()+ &hour + ":" + &min + " ... refresh the page to see time passing ...";
    let data = mesg.into_bytes();
            let mut file_helper = FileHelper::new(client.clone());
            let mut writer =
                try!(file_helper.update_content(file.clone(), Mode::Overwrite, dir_listing.clone()));
            try!(writer.write(&data[..]));
            let _ = try!(writer.close());
            println!("File Updated");
    
    let mut file_helper2 = FileHelper::new(client.clone());
    let mut reader = try!(file_helper2.read(file));
    let size = reader.size();
    let content = try!(reader.read(0, size));

    println!("\n-----------------------------------------------------");
    println!("                 Home Page Contents");
    println!("-----------------------------------------------------\n");
    println!("{}",
             try!(String::from_utf8(content).map_err(|_| {
                 DnsError::Unexpected("Cannot convert contents to displayable string !!"
                     .to_string())
             })));

    Ok(())
}

fn main() {
    let tick = chan::tick_ms(60000);
        
    let test_client = unwrap!(login_account());
    let client = Arc::new(Mutex::new(test_client));

    println!("\n\t-- Preparing storage ----\n");
    let mut root_directory = unwrap!(get_root_directory(client.clone()));
    
        println!("Initialising Dns...");
    let dns_operations = unwrap!(DnsOperations::new(client.clone()));

    loop {
        chan_select! {
            tick.recv() => {
				println!("tick") ;
				
				if let Err(err) = update_home_page(client.clone(),
                                                                  &dns_operations) {
                        println!("\nFailed !!");
				}	
				
				          
			},
        }
    }
}