From 67cea0e3883b5e0d3469fe99f667768b9478e621 Mon Sep 17 00:00:00 2001
From: aozhiwei <aozhiwei@kingsome.cn>
Date: Sat, 16 Apr 2022 22:27:14 +0800
Subject: [PATCH] 1

---
 bcutils.js | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 utils.js   | 24 ++++++++++++++++++++
 2 files changed, 90 insertions(+)
 create mode 100644 bcutils.js

diff --git a/bcutils.js b/bcutils.js
new file mode 100644
index 0000000..98fceff
--- /dev/null
+++ b/bcutils.js
@@ -0,0 +1,66 @@
+const utils = require('./utils');
+
+const BC_BASE_GAME_ID = 2006;
+const BC_FUNC_CREATION = 1;
+const BC_EPOCH = 1643212800;
+
+function isValidBcGameId(gameId) {
+  return gameID > BASE_BC_GAME_ID && gameID < BC_BASE_GAME_ID + 99;
+}
+
+function isValidBcTime(time) {
+  return time >= BC_EPOCH && time < BC_EPOCH + 3600 * 24 * 365 * 20;
+}
+
+function isValidBcFuncId(funcId) {
+  return funcId > 0 && funcId < 10;
+}
+
+function toBcTime(time) {
+  return time - BC_EPOCH;
+}
+
+function toBcGameId(gameId) {
+  return gameId - BC_BASE_GAME_ID;
+}
+
+function genTokenId(gameId, funcId, time, subIdx, idx) {
+  const tokenId =
+        funcId.toString() +
+        utils.pad(toBcGameId(gameId)) +
+        utils.pad(toBcTime(time)) +
+        utils.pad(subIdx, 1) +
+        utils.pad(1 + (idx % 99999), 5);
+  return tokenId;
+}
+
+function isValidTokenId(tokenId) {
+  return utils.isPureNumberStr(tokenId.toString()) && tokenId.toString().length == 18;
+}
+
+function setTokenIdSubIdx(tokenId, idx) {
+  if (!isValidTokenId(tokenId)) {
+    throw 'setTokenIdSubIdx error tokenId:' + tokenId + ' idx:' + idx;
+  }
+  if (idx < 0 || idx > 9 || idx.toString().length != 1) {
+    throw 'setTokenIdSubIdx error tokenId:' + tokenId + ' idx:' + idx;
+  }
+  throw 'setTokenIdSubIdx error tokenId:' + tokenId + ' idx:' + idx;
+}
+
+function isSameAddress(a, b) {
+  return a.toLowerCase() == b.toLowerCase();
+}
+
+exports.BC_BASE_GAME_ID = BC_BASE_GAME_ID;
+exports.BC_FUNC_CREATION = BC_FUNC_CREATION;
+exports.BC_EPOCH = BC_EPOCH;
+exports.isValidBcGameId = isValidBcGameId;
+exports.isValidBcTime = isValidBcTime;
+exports.isValidBcFuncId = isValidBcFuncId;
+exports.toBcTime = toBcTime;
+exports.toBcGameId = toBcGameId;
+exports.genTokenId = genTokenId;
+exports.isValidTokenId = isValidTokenId;
+exports.setTokenIdSubIdx = setTokenIdSubIdx;
+exports.isSameAddress = isSameAddress;
diff --git a/utils.js b/utils.js
index 318ac82..d6ab6e8 100644
--- a/utils.js
+++ b/utils.js
@@ -5,6 +5,19 @@ const xlsx = require('node-xlsx');
 const parseArgs = require('minimist');
 const serverEnv = process.env['SERVER_ENV'];
 
+const numberHash = {
+  '0': 0,
+  '1': 1,
+  '2': 2,
+  '3': 3,
+  '4': 4,
+  '5': 5,
+  '6': 6,
+  '7': 7,
+  '8': 8,
+  '9': 9
+};
+
 function rspErr(rsp, errCode, errMsg) {
   rsp.send(jsonEncode({
     'errcode': errCode,
@@ -214,6 +227,16 @@ function hasKey(obj, key) {
   return obj.hasOwnProperty(key);
 }
 
+function isPureNumberStr(str) {
+  for (let i = 0; i < str.length; ++i){
+    const c = str[i];
+    if (!hasKey(numberHash, c)) {
+      return false;
+    }
+  }
+  return true;
+}
+
 exports.rspErr = rspErr;
 exports.rspOk = rspOk;
 exports.rspData = rspData;
@@ -244,3 +267,4 @@ exports.getVal = getVal;
 exports.excelToJson = excelToJson;
 exports.getArgv = getArgv;
 exports.hasKey = hasKey;
+exports.isPureNumberStr = isPureNumberStr;