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import type { AstroConfig } from './@types/astro';
import * as colors from 'kleur/colors';
import { join as pathJoin, resolve as pathResolve } from 'path';
import { existsSync, promises as fsPromises } from 'fs';
import yargs from 'yargs-parser';
import generate from './generate.js';
import devServer from './dev.js';
const { readFile } = fsPromises;
type Arguments = yargs.Arguments;
type cliState = 'help' | 'version' | 'dev' | 'build';
function resolveArgs(flags: Arguments): cliState {
if (flags.version) {
return 'version';
} else if (flags.help) {
return 'help';
}
const cmd = flags._[2];
switch (cmd) {
case 'dev':
return 'dev';
case 'build':
return 'build';
default:
return 'help';
}
}
function printHelp() {
console.error(` ${colors.bold('astro')} - Futuristic web development tool.
${colors.bold('Commands:')}
astro dev Run Astro in development mode.
astro build Build a pre-compiled production version of your site.
${colors.bold('Flags:')}
--version Show the version number and exit.
--help Show this help message.
`);
}
async function printVersion() {
const pkg = JSON.parse(await readFile(new URL('../package.json', import.meta.url), 'utf-8'));
console.error(pkg.version);
}
async function loadConfig(rawRoot: string | undefined): Promise<AstroConfig | undefined> {
if (typeof rawRoot === 'undefined') {
rawRoot = process.cwd();
}
const root = pathResolve(rawRoot);
const fileProtocolRoot = `file://${root}/`;
const astroConfigPath = pathJoin(root, 'astro.config.mjs');
if (!existsSync(astroConfigPath)) {
return undefined;
}
const astroConfig: AstroConfig = (await import(astroConfigPath)).default;
astroConfig.projectRoot = new URL(astroConfig.projectRoot + '/', fileProtocolRoot);
astroConfig.hmxRoot = new URL(astroConfig.hmxRoot + '/', fileProtocolRoot);
return astroConfig;
}
async function runCommand(rawRoot: string, cmd: (a: AstroConfig) => Promise<void>) {
const astroConfig = await loadConfig(rawRoot);
if (typeof astroConfig === 'undefined') {
console.error(colors.red(' An astro.config.mjs file is required.\n'));
printHelp();
process.exit(1);
}
return cmd(astroConfig);
}
const cmdMap = new Map([
['build', generate],
['dev', devServer],
]);
export async function cli(args: string[]) {
const flags = yargs(args);
const state = resolveArgs(flags);
switch (state) {
case 'help': {
printHelp();
process.exit(1);
break;
}
case 'version': {
await printVersion();
process.exit(0);
break;
}
case 'build':
case 'dev': {
const cmd = cmdMap.get(state)!;
runCommand(flags._[3], cmd);
}
}
}
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