// Copyright (c) 2014-2019, MyMonero.com
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
//	conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//	of conditions and the following disclaimer in the documentation and/or other
//	materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
//	used to endorse or promote products derived from this software without specific
//	prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
"use strict";
//
const monero_config = require("./monero_config");
const moment = require("../cryptonote_utils/moment")
//
function IsTransactionConfirmed(tx, blockchain_height) 
{
	// TODO: check tx.mempool here?
	if (tx.height === null || typeof tx.height == 'undefined') {
		return false // supposing it hasn't made it into a block yet
	}
	return blockchain_height - tx.height > monero_config.txMinConfirms;
}
exports.IsTransactionConfirmed = IsTransactionConfirmed;
//
function IsTransactionUnlocked(tx, blockchain_height) {
	const unlock_time = tx.unlock_time || 0;
	if (!monero_config.maxBlockNumber) {
		throw "Max block number is not set in config!";
	}
	if (unlock_time < monero_config.maxBlockNumber) {
		// unlock time is block height
		return blockchain_height >= unlock_time;
	} else {
		// unlock time is timestamp
		var current_time = Math.round(new Date().getTime() / 1000);
		return current_time >= unlock_time;
	}
}
exports.IsTransactionUnlocked = IsTransactionUnlocked;
//
function TransactionLockedReason(tx, blockchain_height)
{
	const unlock_time = tx.unlock_time || 0;
	if (unlock_time < monero_config.maxBlockNumber) {
		// unlock time is block height
		var numBlocks = unlock_time - blockchain_height;
		if (numBlocks <= 0) {
			return "Transaction is unlocked";
		}
		var unlock_prediction = moment().add(
			numBlocks * monero_config.avgBlockTime,
			"seconds"
		);
		return (
			"Will be unlocked in " +
			numBlocks +
			" blocks, ~" +
			unlock_prediction.fromNow(true) +
			", " +
			unlock_prediction.calendar() +
			""
		);
	} else {
		// unlock time is timestamp
		var current_time = Math.round(new Date().getTime() / 1000);
		var time_difference = unlock_time - current_time;
		if (time_difference <= 0) {
			return "Transaction is unlocked";
		}
		var unlock_moment = moment(unlock_time * 1000);
		return (
			"Will be unlocked " +
			unlock_moment.fromNow() +
			", " +
			unlock_moment.calendar()
		);
	}
}
exports.TransactionLockedReason = TransactionLockedReason;
