delete txp and wallet

lib/storage.js

@@ -182,6 +182,94 @@ Storage.prototype.storeTx = function(walletId, txp, cb) {
   this.db.batch(ops, cb);
 };
 
+Storage.prototype.removeTx = function(walletId, txProposalId, cb) {
+  var ops = [{
+    type: 'del',
+    key: KEY.TXP(walletId, txp.id),
+  }, {
+    type: 'del',
+    key: KEY.PENDING_TXP(walletId, txp.id),
+    value: txp,
+  }];
+
+  this.db.batch(ops, cb);
+};
+
+
+Storage.prototype.removeAllPendingTxs = function(walletId, cb) {
+  var key = KEY.PENDING_TXP(walletId);
+  this.db.createWriteStream({
+    gt: key,
+    lt: key + '~',
+  })
+    .on('error', function(err) {
+      if (err.notFound) return cb();
+      return cb(err);
+    })
+    .on('end', function() {
+      return cb(null);
+    });
+};
+
+
+Storage.prototype.removeAllTxs = function(walletId, cb) {
+  var key = KEY.TXP(walletId);
+  this.db.createWriteStream({
+    gt: key,
+    lt: key + '~',
+  })
+    .on('error', function(err) {
+      if (err.notFound) return cb();
+      return cb(err);
+    })
+    .on('end', function() {
+      return cb(null);
+    });
+};
+
+
+Storage.prototype._removeAllAddresses = function(walletId, cb) {
+  var key = KEY.ADDRESS(walletId);
+  this.db.createWriteStream({
+    gte: key,
+    lt: key + '~',
+    type: 'del',
+  })
+    .on('error', function(err) {
+      if (err.notFound) return cb();
+      return cb(err);
+    })
+    .on('end', function() {
+      return cb(null);
+    });
+};
+
+Storage.prototype.removeWallet = function(walletId, cb) {
+  var self = this;
+
+  async.series([
+    function(next) {
+      self._removeAllAddresses(walletId, next);
+    },
+    function(next) {
+      self.removeAllPendingTxs(walletId, next);
+    },
+ 
+    function(next) {
+      self.removeAllTxs(walletId, next);
+    },
+    function(next) {
+      var ops = [{
+        type: 'del',
+        key: KEY.WALLET(walletId),
+      }];
+      self.db.batch(ops, next);
+    },
+  ], cb);
+};
+
+
+
 Storage.prototype.fetchAddresses = function(walletId, cb) {
   var addresses = [];
   var key = KEY.ADDRESS(walletId);