Add support command

src/commands/curator/support.js

@@ -0,0 +1,52 @@
+const Command = require('../../structures/Command');
+const Util = require('../../util');
+
+module.exports = class Support extends Command {
+  get name() { return 'support'; }
+
+  get _options() { return {
+    aliases: ['sup'],
+    permissions: ['curatorOrAdmin'],
+    minimumArgs: 2
+  }; }
+
+  async exec(message, { args }) {
+    const givenAmount = Util.LBRY.ensureDecimal(args[1]);
+    if (!givenAmount)
+      return message.channel.createMessage('The second argument must be a numeric amount of LBC to send!');
+
+    const givenClaim = args[0];
+    if (!/^[a-f0-9]{40}$/.test(givenClaim))
+      // @TODO use claim_search for invalid claim ids
+      return message.channel.createMessage('That Claim ID isn\'t valid.');
+  
+    const account = await Util.LBRY.findOrCreateAccount(this.client, message.author.id);
+    if (account.newAccount) {
+      // Wait for the blockchain to complete the funding
+      await message.channel.sendTyping();
+      await Util.halt(3000);
+    }
+
+    // Get and check balance
+    const walletResponse = await this.client.lbry.accountBalance(account.accountID);
+    const wallet = await walletResponse.json();
+    if (await this.handleResponse(message, walletResponse, wallet)) return;
+    const balance = wallet.result.available;
+    if (parseFloat(givenAmount) > parseFloat(balance))
+      return message.channel.createMessage('You don\'t have enough LBC to do this!');
+ 
+    // Create support
+    const response = await this.client.lbry.createSupport({
+      accountID: account, claimID: givenClaim, amount: givenAmount });
+    const transaction = await response.json();
+    if (await this.handleResponse(message, response, transaction)) return;
+    const txid = transaction.result.txid;
+    message.channel.createMessage(`Support successful! https://explorer.lbry.com/tx/${txid}`);
+  }
+
+  get metadata() { return {
+    category: 'Curator',
+    description: 'Support a given claim.',
+    usage: '<claim> <amount>'
+  }; }
+};

src/structures/LBRY.js

@@ -147,7 +147,7 @@ class LBRY {
   createSupport({ accountID, claimID, amount }) {
     return this._sdkRequest('support_create', {
       account_id: accountID, claim_id: claimID,
-      amount, funding_account_ids: accountID });
+      amount: Util.LBRY.ensureDecimal(amount), funding_account_ids: accountID });
   }
 
   /**

src/util.js

@@ -145,6 +145,16 @@ Util.resolveToUserID = (arg) => {
   else return null;
 };
 
+/**
+ * Make a promise that resolves after some time
+ * @memberof Util.
+ * @param {string} arg
+ * @returns {?string}
+ */
+Util.halt = (ms) => {
+  return new Promise(resolve => setTimeout(resolve, ms));
+};
+
 /**
  * Hastebin-related functions
  * @memberof Util.