64 lines
1.4 KiB
JavaScript
64 lines
1.4 KiB
JavaScript
var _ = require('lodash');
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var SHARED_INDEX = 0x80000000 - 1;
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function AddressManager() {
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this.version = '1.0.0';
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};
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AddressManager.create = function(opts) {
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opts = opts || {};
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var x = new AddressManager();
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x.receiveAddressIndex = 0;
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x.changeAddressIndex = 0;
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x.copayerIndex = (opts && _.isNumber(opts.copayerIndex)) ? opts.copayerIndex : SHARED_INDEX;
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return x;
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};
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AddressManager.fromObj = function(obj) {
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var x = new AddressManager();
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x.receiveAddressIndex = obj.receiveAddressIndex;
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x.changeAddressIndex = obj.changeAddressIndex;
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x.copayerIndex = obj.copayerIndex;
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return x;
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};
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AddressManager.prototype._incrementIndex = function(isChange) {
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if (isChange) {
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this.changeAddressIndex++;
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} else {
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this.receiveAddressIndex++;
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}
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};
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AddressManager.prototype.rewindIndex = function(isChange, n) {
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n = _.isUndefined(n) ? 1 : n;
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if (isChange) {
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this.changeAddressIndex = Math.max(0, this.changeAddressIndex - n);
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} else {
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this.receiveAddressIndex = Math.max(0, this.receiveAddressIndex - n);
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}
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};
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AddressManager.prototype.getCurrentAddressPath = function(isChange) {
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return 'm/' +
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this.copayerIndex + '/' +
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(isChange ? 1 : 0) + '/' +
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(isChange ? this.changeAddressIndex : this.receiveAddressIndex);
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};
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AddressManager.prototype.getNewAddressPath = function(isChange) {
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var ret = this.getCurrentAddressPath(isChange);
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this._incrementIndex(isChange);
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return ret;
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};
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module.exports = AddressManager;
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