js-waku-examples/packages/create-waku-app/createApp.js

114 lines
3.4 KiB
JavaScript

const path = require("path");
const fs = require("fs-extra");
const execSync = require("child_process").execSync;
const { Command } = require("commander");
const validateProjectName = require("validate-npm-package-name");
const supportedExamplesDir = path.resolve(__dirname, "./examples");
const init = (name, description, version, supportedExamples) => {
let appName;
const program = new Command()
.name(name)
.description(description)
.version(version, "-v, --version", "output the version number")
.arguments("<project-directory>", "Project directory to initialize Waku app")
.action(_appName => {
appName = _appName;
})
.option(
"-t, --template <path-to-template>",
"specify a template for the created project"
)
.allowUnknownOption()
.parse();
const options = program.opts();
const template = options.template || "web-chat";
if (!supportedExamples[template]) {
const supportedExamplesMessage = Object.keys(supportedExamples).reduce((acc, v) => {
acc += `\t${v}\n`;
return acc;
}, "");
console.error(`Unknown template: ${template}`);
console.error(`We support only following templates:\n${supportedExamplesMessage}`)
process.exit(1);
}
createApp(appName, template);
};
function createApp(name, template) {
const appRoot = path.resolve(name);
const appName = path.basename(appRoot);
const templateDir = path.resolve(supportedExamplesDir, template);
terminateIfAppExists(appName);
terminateIfProjectNameInvalid(appName);
console.log(`Initializing ${appName} from ${template} template.`);
fs.ensureDirSync(appName);
fs.copySync(templateDir, appRoot);
runNpmInApp(appRoot);
runGitInit(appRoot);
}
function runNpmInApp(root) {
console.log("Installing npm packages.");
try {
execSync(`npm install --prefix ${root}`, { stdio: "ignore" });
console.log("Successfully installed npm dependencies.");
} catch (e) {
console.warn("Failed to install npm dependencies", e);
}
}
function runGitInit(root) {
if (isInGitRepository()) {
return;
}
console.log("Initiating git repository.");
try {
execSync(`git init ${root}`, { stdio: "ignore" });
console.log("Successfully initialized git repo.");
} catch (e) {
console.warn("Git repo not initialized", e);
}
}
function isInGitRepository() {
try {
execSync("git rev-parse --is-inside-work-tree", { stdio: "ignore" });
return true;
} catch (e) {
return false;
}
}
function terminateIfProjectNameInvalid(name) {
const validationResult = validateProjectName(name);
if (!validationResult.validForNewPackages) {
console.error(`Cannot create a project named ${name} because of npm naming restrictions:\n`);
[...(validationResult.errors || []), ...(validationResult.warnings || [])]
.forEach(error => console.error(` * ${error}`));
console.error("\nPlease choose a different project name.");
process.exit(1);
}
}
function terminateIfAppExists(appRoot) {
if (fs.existsSync(appRoot)) {
console.error(`Cannot create a project because it already exists by the name: ${appRoot}`);
process.exit(1);
}
}
module.exports = { init };