const assproc = require('@railcomm/assproc');
const { join: pathJoin } = require('path');
const fs = require('fs');
const exec = require('util').promisify(require('child_process').exec);

(async () => {
    const config = JSON.parse(fs.readFileSync(pathJoin(__dirname, 'config.json')));
    const isDebug = fs.existsSync(pathJoin(__dirname, '.debug'));

    const env = {
        root: __dirname,
        source: pathJoin(__dirname, 'src'),
        public: pathJoin(__dirname, 'public'),
        debug: isDebug,
        swc: {
            es: 'es5',
        },
        vars: {
            html: {}, // BUG: if this isn't definited prior, assproc will fail
            build: {
                DEBUG: isDebug,
                IPV4_LOOKUP: config.ipv4_lookup,
                IPV6_LOOKUP: config.ipv6_lookup,
                GIT_HASH: (await exec('git log --pretty="%H" -n1 HEAD')).stdout.trim(),
            },
        },
    };

    const tasks = {
        js: [
            { source: 'ipaddr.js', target: '/assets', name: 'ipaddr.{hash}.js', vars: { html: ':source' } },
        ],
        css: [
            { source: 'ipaddr.css', target: '/assets', name: 'ipaddr.{hash}.css', vars: { html: ':source' } },
        ],
        html: [
            { source: 'index.html', target: '/', name: 'index.html', template: 'html' },
        ],
    };

    await assproc.process(env, tasks);
})();