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/* eslint-disable no-console */
import type { AstroConfig } from './@types/astro';
import * as colors from 'kleur/colors';
import { promises as fsPromises } from 'fs';
import yargs from 'yargs-parser';
import { loadConfig } from './config.js';
import { build } from './build.js';
import devServer from './dev.js';
const { readFile } = fsPromises;
const buildAndExit = async (...args: Parameters<typeof build>) => {
const ret = await build(...args);
process.exit(ret);
};
type Arguments = yargs.Arguments;
type cliCommand = 'help' | 'version' | 'dev' | 'build';
interface CLIState {
cmd: cliCommand;
options: {
projectRoot?: string;
sitemap?: boolean;
port?: number;
config?: string;
};
}
/** Determine which action the user requested */
function resolveArgs(flags: Arguments): CLIState {
const options: CLIState['options'] = {
projectRoot: typeof flags.projectRoot === 'string' ? flags.projectRoot: undefined,
sitemap: typeof flags.sitemap === 'boolean' ? flags.sitemap : undefined,
port: typeof flags.port === 'number' ? flags.port : undefined,
config: typeof flags.config === 'string' ? flags.config : undefined
};
if (flags.version) {
return { cmd: 'version', options };
} else if (flags.help) {
return { cmd: 'help', options };
}
const cmd = flags._[2];
switch (cmd) {
case 'dev':
return { cmd: 'dev', options };
case 'build':
return { cmd: 'build', options };
default:
return { cmd: 'help', options };
}
}
/** Display --help flag */
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:')}
--config <path> Specify the path to the Astro config file.
--project-root <path> Specify the path to the project root folder.
--no-sitemap Disable sitemap generation (build only).
--version Show the version number and exit.
--help Show this help message.
`);
}
/** Display --version flag */
async function printVersion() {
const pkg = JSON.parse(await readFile(new URL('../package.json', import.meta.url), 'utf-8'));
console.error(pkg.version);
}
/** Merge CLI flags & config options (CLI flags take priority) */
function mergeCLIFlags(astroConfig: AstroConfig, flags: CLIState['options']) {
if (typeof flags.sitemap === 'boolean') astroConfig.buildOptions.sitemap = flags.sitemap;
if (typeof flags.port === 'number') astroConfig.devOptions.port = flags.port;
}
/** Handle `astro run` command */
async function runCommand(rawRoot: string, cmd: (a: AstroConfig) => Promise<void>, options: CLIState['options']) {
try {
const projectRoot = options.projectRoot || rawRoot;
const astroConfig = await loadConfig(projectRoot, options.config);
mergeCLIFlags(astroConfig, options);
return cmd(astroConfig);
} catch (err) {
console.error(colors.red(err.toString() || err));
process.exit(1);
}
}
const cmdMap = new Map([
['build', buildAndExit],
['dev', devServer],
]);
/** The primary CLI action */
export async function cli(args: string[]) {
const flags = yargs(args);
const state = resolveArgs(flags);
switch (state.cmd) {
case 'help': {
printHelp();
process.exit(1);
break;
}
case 'version': {
await printVersion();
process.exit(0);
break;
}
case 'build':
case 'dev': {
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
const cmd = cmdMap.get(state.cmd)!;
runCommand(flags._[3], cmd, state.options);
}
}
}
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