#!/usr/bin/env node

require('colors');
var path = require('path');
var mout = require('mout');
var pkg = require(path.join(__dirname, '..', 'package.json'));
var cli = require('../lib/util/cli');
var commands = require('../lib/commands');

// --------

var options;
var command;
var renderer;
var levels;

process.title = 'bower';

// Read CLI options
options = cli.readOptions(process.argv, {
    version: { type: Boolean, shorthand: 'v' }
});

// Handle print of version
if (options.version) {
    process.stdout.write(pkg.version + '\n');
    process.exit();
}

// Parse log levels
levels = options['log-levels'];
if (levels) {
    levels = levels
    .split(',')
    .map(function (level) { return level.trim(); });
}

// Get the command to execute
// TODO: abbreviations
command = options.argv.remain && options.argv.remain.shift();
command = commands[command] || commands.help;

// Get the renderer
renderer = cli.createRenderer(options);

// Execute the command
process.stdout.write(renderer.head());
command.line(process.argv)
.on('data', function (data) {
    var renderFuncName;
    var renderFunc;
    var str;

    // Check if this log level is allowed
    if (levels && levels.indexOf(data.level) === -1) {
        return;
    }

    // Attempt to use renderer function specified by the tag
    // Tags can be namespaced; this means that if the tag is
    // "help.install" it will call "renderer.help.install()"
    // Fallback to data if not found
    renderFuncName = data.tag
    .split('.')
    .map(function (slice) { return mout.string.camelCase(slice); })
    .join('.');

    renderFunc = mout.object.get(renderer, renderFuncName) || renderer.data;
    str = renderFunc(data);

    // If type is warn, print to stderr instead
    process[data.type === 'warn' ? 'stderr' : 'stdout'].write(str);
})
.on('end', function (data) {
    process.stdout.write(renderer.end(data));
    process.stdout.write(renderer.tail());
})
.on('error', function (err)  {
    process.stderr.write(renderer.error(err));
    process.stdout.write(renderer.tail());
    process.exit(1);
});