feat: save source through bundlr (#283)

tools/data/js/token-evolve.js

@@ -0,0 +1,66 @@
+export function handle(state, action) {
+  const balances = state.balances;
+  const canEvolve = state.canEvolve;
+  const input = action.input;
+  const caller = action.caller;
+
+  if (input.function === 'transfer') {
+    const target = input.target;
+    const qty = input.qty;
+
+    if (!Number.isInteger(qty)) {
+      throw new ContractError('Invalid value for "qty". Must be an integer');
+    }
+
+    if (!target) {
+      throw new ContractError('No target specified');
+    }
+
+    if (qty <= 0 || caller === target) {
+      throw new ContractError('Invalid token transfer');
+    }
+
+    if (balances[caller] < qty) {
+      throw new ContractError(`Caller balance not high enough to send ${qty} token(s)!`);
+    }
+
+    // Lower the token balance of the caller
+    balances[caller] -= qty;
+    if (target in balances) {
+      // Wallet already exists in state, add new tokens
+      balances[target] += qty;
+    } else {
+      // Wallet is new, set starting balance
+      balances[target] = qty;
+    }
+
+    return { state };
+  }
+
+  if (input.function === 'balance') {
+    const target = input.target;
+    const ticker = state.ticker;
+
+    if (typeof target !== 'string') {
+      throw new ContractError('Must specify target to get balance for');
+    }
+
+    if (typeof balances[target] !== 'number') {
+      throw new ContractError('Cannot get balance, target does not exist');
+    }
+
+    return { result: { target, ticker, balance: balances[target] + 555 } };
+  }
+
+  if (input.function === 'evolve' && canEvolve) {
+    if (state.owner !== caller) {
+      throw new ContractError('Only the owner can evolve a contract.');
+    }
+
+    state.evolve = input.value;
+
+    return { state };
+  }
+
+  throw new ContractError(`No function supplied or function not recognised: "${input.function}"`);
+}