1 files changed, 85 insertions, 0 deletions
diff --git a/packages/typed-contracts/src/index.ts b/packages/typed-contracts/src/index.ts
new file mode 100644
index 000000000..baa3ebc91
--- /dev/null
+++ b/packages/typed-contracts/src/index.ts
@@ -0,0 +1,85 @@
+#!/usr/bin/env node
+
+import chalk from 'chalk';
+import * as fs from 'fs';
+import {sync as globSync} from 'glob';
+import * as Handlebars from 'handlebars';
+import * as _ from 'lodash';
+import * as mkdirp from 'mkdirp';
+import * as yargs from 'yargs';
+
+import * as toSnakeCase from 'to-snake-case';
+import * as Web3 from 'web3';
+
+import {ParamKind} from './types';
+import {utils} from './utils';
+
+const args = yargs
+    .option('abiGlob', {
+        describe: 'Glob pattern to search for ABI JSON files',
+        type: 'string',
+        demand: true,
+    })
+    .option('templates', {
+        describe: 'Folder where to search for templates',
+        type: 'string',
+        demand: true,
+    })
+    .option('output', {
+        describe: 'Folder where to put the output files',
+        type: 'string',
+        demand: true,
+    })
+    .argv;
+
+function writeOutputFile(name: string, renderedTsCode: string): void {
+    const fileName = toSnakeCase(name);
+    const filePath = `${args.output}/${fileName}.ts`;
+    fs.writeFileSync(filePath, renderedTsCode);
+    utils.log(`Created: ${chalk.bold(filePath)}`);
+}
+
+Handlebars.registerHelper('parameterType', utils.solTypeToTsType.bind(utils, ParamKind.Input));
+Handlebars.registerHelper('returnType', utils.solTypeToTsType.bind(utils, ParamKind.Output));
+const partialTemplateFileNames = globSync(`${args.templates}/partials/**/*.mustache`);
+for (const partialTemplateFileName of partialTemplateFileNames) {
+    const namedContent = utils.getNamedContent(partialTemplateFileName);
+    Handlebars.registerPartial(namedContent.name, namedContent.content);
+}
+
+const mainTemplate = utils.getNamedContent(`${args.templates}/contract.mustache`);
+const template = Handlebars.compile(mainTemplate.content);
+const abiFileNames = globSync(args.abiGlob);
+if (_.isEmpty(abiFileNames)) {
+    utils.log(`${chalk.red(`No ABI files found.`)}`);
+    utils.log(`Please make sure you've passed a correct folder and they have ${chalk.bold('*.json')} extensions`);
+    process.exit(1);
+} else {
+    utils.log(`Found ${chalk.green(`${abiFileNames.length}`)} ${chalk.bold('ABI')} files`);
+    mkdirp.sync(args.output);
+}
+for (const abiFileName of abiFileNames) {
+    const namedContent = utils.getNamedContent(abiFileName);
+    utils.log(`Processing: ${chalk.bold(namedContent.name)}...`);
+    const parsedContent = JSON.parse(namedContent.content);
+    const ABI = _.isArray(parsedContent) ?
+                parsedContent : // ABI file
+                parsedContent.abi; // Truffle contracts file
+    const methodAbis = ABI.filter((abi: Web3.AbiDefinition) => abi.type === 'function') as Web3.MethodAbi[];
+    methodAbis.map(methodAbi => {
+        methodAbi.inputs.map(input => {
+            if (_.isEmpty(input.name)) {
+                // Auto-generated getters don't have parameter names
+                input.name = 'index';
+            }
+        });
+        // This will make temlates simpler
+        (methodAbi.outputs as any).singleReturnValue = methodAbi.outputs.length === 1;
+    });
+    const templateData = {
+        contractName: namedContent.name,
+        methodAbis,
+    };
+    const renderedTsCode = template(templateData);
+    writeOutputFile(namedContent.name, renderedTsCode);
+}