epic_explorer/server/utils/common.ts
2020-01-07 13:31:30 +05:30

412 lines
15 KiB
TypeScript

import { getConnection, AdvancedConsoleLogger } from "typeorm";
import { Global } from "../global";
import { async } from '@angular/core/testing';
function convertMinsToHrmin (millseconds,insec) {
var seconds = Math.floor(millseconds / 1000);
if(insec){
let sec = Math.floor(millseconds / 1000);
return sec;
}
var days = Math.floor(seconds / 86400);
var hours = Math.floor((seconds % 86400) / 3600);
var minutes = Math.floor(((seconds % 86400) % 3600) / 60);
seconds = seconds % 60;
var dateTimeDurationString = '';
if (days > 0 && (hours === 0 && minutes === 0))
dateTimeDurationString += days > 1 ? days + 'd ' : days + 'd ';
if (days > 0 && (hours > 0 || minutes > 0))
dateTimeDurationString += days > 1 ? days + 'd ' : days + 'd ';
if (hours > 0 && minutes > 0)
dateTimeDurationString += hours > 1 ? hours + 'h ' : hours + 'h ';
if (hours > 0 && minutes === 0)
dateTimeDurationString += hours > 1 ? hours + 'h ' : hours + 'h ';
if (minutes > 0)
dateTimeDurationString += minutes > 1 ? minutes + 'm ' : minutes + 'm ';
if (seconds > 0)
dateTimeDurationString += seconds > 1 ? seconds + 's ' : seconds + 's ';
return dateTimeDurationString;
}
function dateDiff(date2, insec = false) {
var current_date = new Date();
// var current_date = new Date("Sat Apr 2 2018 15:04:00 GMT+0530 (IST)");
var enddaydif =
Math.abs(date2.getTime() - current_date.getTime()) /
(1000 * 60 * 60 * 24);
var enddayrnd = Math.round(enddaydif);
// if(enddayrnd < 1) {
var time = convertMinsToHrmin(
Math.abs(date2.getTime() - current_date.getTime()),insec
);
return time;
// } else if(enddayrnd == 1) {
// return 'Ends in ' + enddayrnd + ' day';
// }else {
// return 'Ends in ' + enddayrnd + ' days';
// }
}
const latestBlockDetails = async()=> {
let block_height = '',
letest_block,
letest_block_num = '',
letest_block_duration = '';
const BlockchainLatestBlockQuery = await getConnection(Global.network)
.query(
'SELECT timestamp,height,edge_bits,hash,secondary_scaling, previous_id, total_difficulty_cuckaroo, total_difficulty_cuckatoo, total_difficulty_progpow, total_difficulty_randomx FROM blockchain_block ORDER BY timestamp DESC LIMIT 1',
)
.catch(err_msg => {
return(err_msg);
});
const BlockchainPreviousBlockQuery = await getConnection(Global.network)
.query(
'SELECT total_difficulty_cuckaroo, total_difficulty_cuckatoo, total_difficulty_progpow, total_difficulty_randomx FROM blockchain_block WHERE hash=' +
"'" +
BlockchainLatestBlockQuery[0].previous_id +
"'",
)
.catch(err_msg => {
return(err_msg);
});
let height = BlockchainLatestBlockQuery[0].height;
var coin_existence;
// if (height > 12960) {
// var remain_block = height - 12960;
// var coin_existence =
// 1440 * 200 +
// 1440 * 180 +
// 1440 * 160 +
// 1440 * 140 +
// 1440 * 120 +
// 1440 * 100 +
// 1440 * 80 +
// 1440 * 60 +
// 1440 * 50 +
// 25 * remain_block;
// } else if (height > 11520) {
// var remain_block = height - 11520;
// var coin_existence =
// 1440 * 200 +
// 1440 * 180 +
// 1440 * 160 +
// 1440 * 140 +
// 1440 * 120 +
// 1440 * 100 +
// 1440 * 80 +
// 1440 * 60 +
// remain_block * 50;
// } else if (height > 10080) {
// var remain_block = height - 10080;
// var coin_existence =
// 1440 * 200 +
// 1440 * 180 +
// 1440 * 160 +
// 1440 * 140 +
// 1440 * 120 +
// 1440 * 100 +
// 1440 * 80 +
// remain_block * 60;
// } else if (height > 8640) {
// var remain_block = height - 8640;
// var coin_existence =
// 1440 * 200 +
// 1440 * 180 +
// 1440 * 160 +
// 1440 * 140 +
// 1440 * 120 +
// 1440 * 100 +
// remain_block * 80;
// } else if (height > 7200) {
// var remain_block = height - 7200;
// var coin_existence =
// 1440 * 200 +
// 1440 * 180 +
// 1440 * 160 +
// 1440 * 140 +
// 1440 * 120 +
// remain_block * 100;
// } else if (height > 5760) {
// var remain_block = height - 5760;
// var coin_existence =
// 1440 * 200 +
// 1440 * 180 +
// 1440 * 160 +
// 1440 * 140 +
// remain_block * 120;
// } else if (height > 4320) {
// var remain_block = height - 4320;
// var coin_existence =
// 1440 * 200 + 1440 * 180 + 1440 * 160 + remain_block * 140;
// } else if (height > 2880) {
// var remain_block = height - 2880;
// var coin_existence = 1440 * 200 + 1440 * 180 + remain_block * 160;
// } else if (height > 1440) {
// var remain_block = height - 1440;
// var coin_existence = 1440 * 200 + remain_block * 180;
// } else {
// var coin_existence = height * 200;
// }
let DAY_HEIGHT = 1440
/// Height of the first epic block emission era
const BLOCK_ERA_1 = DAY_HEIGHT * 334;
/// Height of the second epic block emission era
const BLOCK_ERA_2 = BLOCK_ERA_1 + (DAY_HEIGHT * 470);
/// Height of the third epic block emission era
const BLOCK_ERA_3 = BLOCK_ERA_2 + (DAY_HEIGHT * 601);
/// Height of the fourth epic block emission era
const BLOCK_ERA_4 = BLOCK_ERA_3 + (DAY_HEIGHT * 800);
/// Height of the fifth epic block emission era
const BLOCK_ERA_5 = BLOCK_ERA_4 + (DAY_HEIGHT * 1019);
/// After the epic block emission era 6, each era will last 4 years (approximately 1460 days)
const BLOCK_ERA_6_ONWARDS = DAY_HEIGHT * 1460;
/// Block Reward that will be assigned after we change from era 5 to era 6.
const BASE_REWARD_ERA_6_ONWARDS = 0.15625;
let remaining_height = 0;
let currentReward = 16;
/// Compute the total reward generated by each block in a given height.
if (height <= BLOCK_ERA_1) {
coin_existence = height * 16;
currentReward = 16;
} else if (height <= BLOCK_ERA_2) {
remaining_height = height - BLOCK_ERA_1;
coin_existence = (16 * BLOCK_ERA_1) + 8 * remaining_height;
currentReward = 8;
} else if (height <= BLOCK_ERA_3) {
remaining_height = height - BLOCK_ERA_2;
coin_existence = (16 * BLOCK_ERA_1) + (8 * BLOCK_ERA_2) + 4 * remaining_height;
currentReward = 4;
} else if (height <= BLOCK_ERA_4) {
remaining_height = height - BLOCK_ERA_3;
coin_existence = (16 * BLOCK_ERA_1) + (8 * BLOCK_ERA_2) + (4 * BLOCK_ERA_3) + 2 * remaining_height;
currentReward = 2;
} else if (height <= BLOCK_ERA_5) {
remaining_height = height - BLOCK_ERA_4;
coin_existence = (16 * BLOCK_ERA_1) + (8 * BLOCK_ERA_2) + (4 * BLOCK_ERA_3) + (2 * BLOCK_ERA_4) +1 * remaining_height;
currentReward = 1;
} else {
// After the era 6, we reduce the block rewards by half each 1460 days.
// Minus 1 to include multiples in the same index
// (i.e changes greater than to greater or equals to)
let preious_circulation = (16 * BLOCK_ERA_1) + (8 * BLOCK_ERA_2) + (4 * BLOCK_ERA_3) + (2 * BLOCK_ERA_4) + (1 * BLOCK_ERA_5);
let height_with_offset = height - (BLOCK_ERA_5 - 1);
let exp = height_with_offset / BLOCK_ERA_6_ONWARDS;
let reward_emission = BASE_REWARD_ERA_6_ONWARDS / (1 << exp);
coin_existence = preious_circulation + reward_emission ;
currentReward = reward_emission;
}
letest_block = dateDiff(BlockchainLatestBlockQuery[0].timestamp,true);
letest_block_num = letest_block; // "72"
letest_block_duration = letest_block == 1 ? 'second ago' : 'seconds ago';
const SECOND_POW_EDGE_BITS = 29;
const BASE_EDGE_BITS = 24;
if (BlockchainLatestBlockQuery[0].edge_bits == SECOND_POW_EDGE_BITS) {
var hashvalue = BlockchainLatestBlockQuery[0].hash;
var diff =
(BlockchainLatestBlockQuery[0].secondary_scaling * 2 ** 64) /
parseInt(hashvalue.substring(0, 16), 16);
var result = Math.min(diff, 0xffffffffffffffff);
var difficulty = Math.round(result);
} else {
var graph_weight =
2 *
2 ** (BlockchainLatestBlockQuery[0].edge_bits - BASE_EDGE_BITS) *
BlockchainLatestBlockQuery[0].edge_bits;
var hashvalue = BlockchainLatestBlockQuery[0].hash;
var diff =
(graph_weight * 2 ** 64) / parseInt(hashvalue.substring(0, 16), 16);
var result = Math.min(diff, 0xffffffffffffffff);
var difficulty = Math.round(result);
}
if (BlockchainLatestBlockQuery[0].previous_id) {
var targetdifficultycuckaroo =
BlockchainLatestBlockQuery[0].total_difficulty_cuckaroo -
BlockchainPreviousBlockQuery[0].total_difficulty_cuckaroo;
var targetdifficultycuckatoo =
BlockchainLatestBlockQuery[0].total_difficulty_cuckatoo -
BlockchainPreviousBlockQuery[0].total_difficulty_cuckatoo;
var targetdifficultyprogpow =
BlockchainLatestBlockQuery[0].total_difficulty_progpow -
BlockchainPreviousBlockQuery[0].total_difficulty_progpow;
var targetdifficultyrandomx =
BlockchainLatestBlockQuery[0].total_difficulty_randomx -
BlockchainPreviousBlockQuery[0].total_difficulty_randomx;
}
block_height = BlockchainLatestBlockQuery[0].height;
var TotalCuckoo=parseInt(BlockchainLatestBlockQuery[0].total_difficulty_cuckatoo) +
parseInt(BlockchainLatestBlockQuery[0].total_difficulty_cuckaroo);
let FOUNDATION_LEVY_ERA_1 = DAY_HEIGHT * 120;
/// After the first foundation levy era, we decrease the foundation levy each year
let FOUNDATION_LEVY_ERA_2_ONWARDS = DAY_HEIGHT * 365;
/// The foundation levy in each era
let FOUNDATION_LEVY = [
0.0888, 0.0777, 0.0666, 0.0555, 0.0444, 0.0333, 0.0222, 0.0111, 0.0111,
];
/// Compute the foundation levy for each block.
let foundationReward = 16 * FOUNDATION_LEVY[0];
let userReward = 16 - (FOUNDATION_LEVY[0]);
if (height <= 0) {
foundationReward =0;
userReward = 0;
} else if (height <= FOUNDATION_LEVY_ERA_1) {
foundationReward = currentReward * FOUNDATION_LEVY[0];
userReward = currentReward -foundationReward;
} else {
// We subtract 1 to include the last block of an era.
let height_with_offset = height - FOUNDATION_LEVY_ERA_1 - 1;
// We used the index 0 in the first era, therefore we offset the index by 1
let index = (height_with_offset / FOUNDATION_LEVY_ERA_2_ONWARDS) + 1;
if (index < FOUNDATION_LEVY.length ) {
foundationReward = currentReward * FOUNDATION_LEVY[index];
userReward = currentReward -foundationReward;
} else {
foundationReward = 0;
userReward = 0;
}
}
let cuckoohashrate = await network_hashrate(block_height,31,targetdifficultycuckatoo);
let progpowhashrate = await network_hashrate(block_height,16,targetdifficultyprogpow);
let randomxashrate = await network_hashrate(block_height,16,targetdifficultyrandomx);
return {
block_height,
letest_block,
letest_block_num,
letest_block_duration,
coin_existence,
difficulty,
targetdifficultycuckaroo,
targetdifficultycuckatoo,
targetdifficultyprogpow,
targetdifficultyrandomx,
TotalCuckoo,
TotalDifficultyCuckaroo:BlockchainLatestBlockQuery[0].total_difficulty_cuckaroo,
TotalDifficultyCuckatoo:BlockchainLatestBlockQuery[0].total_difficulty_cuckatoo,
TotalDifficultyProgpow:BlockchainLatestBlockQuery[0].total_difficulty_progpow,
TotalDifficultyRandomx:BlockchainLatestBlockQuery[0].total_difficulty_randomx,
currentReward,
foundationReward,
userReward,
cuckoohashrate,
progpowhashrate,
randomxashrate
};
}
async function Details (height) {
if(height){
const BlockchainLatestBlockQuery2 = await getConnection(Global.network)
.query(
"Select hash, height from blockchain_block Where height =" +height.replace(/[a-z]/gi, '')+" OR hash ='"+height+"'",
)
.catch(err_msg => {
return(err_msg);
});
return BlockchainLatestBlockQuery2;
}
}
async function GetBlocktime(height){
if(height){
// const BlockchainLatestBlockQuery3 = await getConnection(Global.network)
// .query(
// "SELECT coalesce(max(bb.alter), 0) as alter FROM (SELECT EXTRACT(EPOCH FROM (timestamp - LAG(timestamp) OVER (ORDER BY timestamp))) AS alter FROM blockchain_block where height="+height+" OR height="+(height-1)+") as bb",
// )
// .catch(err_msg => {
// return(err_msg);
// });
const BlockchainLatestBlockQuery3 = await getConnection(Global.network)
.query(
"SELECT extract(epoch from timestamp at time zone '" +process.env.TIME_ZONE+ "') AS alter FROM blockchain_block where height="+height,
)
.catch(err_msg => {
return(err_msg);
});
return BlockchainLatestBlockQuery3;
}
}
const averageblockdifficulty = async() => {
const BlockchainBlockPerSecondQuery = await getConnection(Global.network)
.query(
"select count(hash) as mhash, 86400/count(hash) as period \
from blockchain_block \
where height != 0 AND timestamp at time zone '" +process.env.TIME_ZONE+ "' > NOW() - INTERVAL '24 HOURS' "
)
.catch(err_msg => {
return(err_msg);
});
return BlockchainBlockPerSecondQuery[0]['period'];
}
async function network_hashrate(height, edge_bits, difficulty) {
let graph_wight = await graph_weight(height, edge_bits)
return (42.0 * (difficulty / graph_wight) / 60.0);
}
async function graph_weight(height, edge_bits) {
let xpr_edge_bits = edge_bits;
let min_edge_bits = 19;
if(min_edge_bits == 19) {
min_edge_bits += 12;
}
let bits_over_min =Math.max(0, (edge_bits - min_edge_bits));
let expiry_height = (1 << bits_over_min) * 524160;
if(height >= expiry_height) {
xpr_edge_bits = Math.max(0,(xpr_edge_bits-(1 + (height - expiry_height) / 10080)));
}
let final_val;
if(edge_bits > 24) {
final_val = edge_bits - 24;
} else {
final_val = 24 - edge_bits;
}
return (2 << final_val) * xpr_edge_bits;
}
export {network_hashrate};
export {averageblockdifficulty};
export {latestBlockDetails};
export {GetBlocktime};
export {Details};