epic_explorer/server/socket/block.ts

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2019-08-07 12:50:34 +00:00
import { getConnection } from "typeorm";
const moment = require("moment");
export async function universalGetLatestBlockDetails(socket) {
let block_height = "",
letest_block = "",
letest_block_num = "",
letest_block_duration = "";
const BlockchainLatestBlockQuery = await getConnection().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"
);
const BlockchainPreviousBlockQuery = await getConnection().query(
"SELECT total_difficulty_cuckaroo, total_difficulty_cuckatoo, total_difficulty_progpow, total_difficulty_randomx FROM blockchain_block WHERE hash=" +
"'" +
BlockchainLatestBlockQuery[0].previous_id +
"'"
);
let height = BlockchainLatestBlockQuery[0].height;
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;
}
letest_block = moment(BlockchainLatestBlockQuery[0].timestamp).fromNow();
letest_block_num = letest_block.substr(0, letest_block.indexOf(" ")); // "72"
letest_block_duration = letest_block.substr(letest_block.indexOf(" ") + 1); // "tocirah sneab"
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);
socket.emit("latestblockdetail", {
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
});
}