// Copyright 2021 The Grin Developers
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//! Test a wallet sending to self
#[macro_use]
extern crate log;
extern crate grin_wallet_controller as wallet;
extern crate grin_wallet_impls as impls;

use grin_core as core;
use std::path::PathBuf;

use grin_wallet_libwallet as libwallet;
use impls::test_framework::{self, LocalWalletClient};
use libwallet::InitTxArgs;
use std::sync::atomic::Ordering;
use std::thread;
use std::time::Duration;

#[macro_use]
mod common;
use common::{clean_output_dir, create_wallet_proxy, setup};

/// self send impl
fn self_send_test_impl(test_dir: &'static str) -> Result<(), libwallet::Error> {
	// Create a new proxy to simulate server and wallet responses
	let mut wallet_proxy = create_wallet_proxy(test_dir);
	let chain = wallet_proxy.chain.clone();
	let stopper = wallet_proxy.running.clone();

	// Create a new wallet test client, and set its queues to communicate with the
	// proxy
	create_wallet_and_add!(
		client1,
		wallet1,
		mask1_i,
		test_dir,
		"wallet1",
		None,
		&mut wallet_proxy,
		true,
		api1
	);
	let mask1 = mask1_i.as_ref();

	// Set the wallet proxy listener running
	thread::spawn(move || {
		if let Err(e) = wallet_proxy.run() {
			error!("Wallet Proxy error: {}", e);
		}
	});

	// few values to keep things shorter
	let reward = core::consensus::REWARD;

	// add some accounts
	api1.create_account_path(mask1, "mining")?;
	api1.create_account_path(mask1, "listener")?;

	// Get some mining done
	{
		wallet_inst!(wallet1, w);
		w.set_account_by_name("mining")?;
	}
	let mut bh = 10u64;
	let _ =
		test_framework::award_blocks_to_wallet(&chain, wallet1.clone(), mask1, bh as usize, false);

	// Should have 5 in account1 (5 spendable), 5 in account (2 spendable)
	let (wallet1_refreshed, wallet1_info) = api1.retrieve_summary_info(mask1, true, 1)?;
	assert!(wallet1_refreshed);
	assert_eq!(wallet1_info.last_confirmed_height, bh);
	assert_eq!(wallet1_info.total, bh * reward);
	// send to send
	let args = InitTxArgs {
		src_acct_name: Some("mining".to_owned()),
		amount: reward * 2,
		minimum_confirmations: 2,
		max_outputs: 500,
		num_change_outputs: 1,
		selection_strategy_is_use_all: true,
		..Default::default()
	};
	let mut slate = api1.init_send_tx(mask1, args)?;
	api1.tx_lock_outputs(mask1, &slate)?;
	// Send directly to self
	wallet::controller::foreign_single_use(
		wallet1.clone(),
		PathBuf::from(test_dir),
		mask1_i.clone(),
		|api| {
			slate = api.receive_tx(&slate, Some("listener"), None)?;
			Ok(())
		},
	)?;
	slate = api1.finalize_tx(mask1, &slate)?;
	api1.post_tx(mask1, &slate, false)?; // mines a block
	bh += 1;

	let _ = test_framework::award_blocks_to_wallet(&chain, wallet1.clone(), mask1, 3, false);
	bh += 3;

	// Check total in mining account
	let (wallet1_refreshed, wallet1_info) = api1.retrieve_summary_info(mask1, true, 1)?;
	assert!(wallet1_refreshed);
	assert_eq!(wallet1_info.last_confirmed_height, bh);
	assert_eq!(wallet1_info.total, bh * reward - reward * 2);

	// Check total in 'listener' account
	{
		wallet_inst!(wallet1, w);
		w.set_account_by_name("listener")?;
	}
	let (wallet1_refreshed, wallet1_info) = api1.retrieve_summary_info(mask1, true, 1)?;
	assert!(wallet1_refreshed);
	assert_eq!(wallet1_info.last_confirmed_height, bh);
	assert_eq!(wallet1_info.total, 2 * reward);

	// let logging finish
	stopper.store(false, Ordering::Relaxed);
	thread::sleep(Duration::from_millis(1000));
	Ok(())
}

#[test]
fn wallet_self_send() {
	let test_dir = "test_output/self_send";
	setup(test_dir);
	if let Err(e) = self_send_test_impl(test_dir) {
		panic!("Libwallet Error: {}", e);
	}
	clean_output_dir(test_dir);
}

#[test]
fn late_lock_self_send_proof() -> Result<(), libwallet::Error> {
	let test_dir = "test_output/late_lock_self_send_proof";
	setup(test_dir);
	let mut wallet_proxy = create_wallet_proxy(test_dir);
	let chain = wallet_proxy.chain.clone();
	let stopper = wallet_proxy.running.clone();
	create_wallet_and_add!(
		client1,
		wallet1,
		mask1_i,
		test_dir,
		"wallet1",
		None,
		&mut wallet_proxy,
		false,
		api1
	);
	let mask1 = mask1_i.as_ref();
	let worker = thread::spawn(move || wallet_proxy.run());

	let result = (|| {
		test_framework::award_blocks_to_wallet(&chain, wallet1.clone(), mask1, 10, false)?;
		let mut slate = api1.init_send_tx(
			mask1,
			InitTxArgs {
				amount: core::consensus::REWARD,
				minimum_confirmations: 2,
				late_lock: Some(true),
				payment_proof_recipient_address: Some(api1.get_slatepack_address(mask1, 0)?),
				..Default::default()
			},
		)?;
		wallet::controller::foreign_single_use(
			wallet1.clone(),
			PathBuf::from(test_dir),
			mask1_i.clone(),
			|api| {
				slate = api.receive_tx(&slate, None, None)?;
				Ok(())
			},
		)?;
		let (_, txs) = api1.retrieve_txs(mask1, false, None, Some(slate.id), None)?;
		assert_eq!(txs.len(), 1);
		assert_eq!(txs[0].tx_type, libwallet::TxLogEntryType::TxReceived);

		api1.finalize_tx(mask1, &slate).map(|_| ())
	})();

	stopper.store(false, Ordering::Relaxed);
	worker.join().unwrap()?;
	drop(api1);
	drop(wallet1);
	drop(chain);
	clean_output_dir(test_dir);
	result
}