#!/usr/bin/env node
/*jslint node:true*/

var fs = require('fs');
var package = require('../package.json');
var common = require('../lib/common');
var xml2json = require('../lib/xml2json');
var json2xml = require('../lib/json2xml');

var output = '';
var stream = '';
var options = {};
var requiredArgs = [
    {arg: 'src', type: 'file', option: 'src', desc: 'Input file that need to be converted.'}
];
var optionalArgs = [
    {arg: 'help', alias: 'h', type: 'flag', option: 'help', desc: 'Display this help content.'},
    {arg: 'version', alias: 'v', type: 'flag', option: 'version', desc: 'Display version number of this module.'},
    {arg: 'out', type: 'file', option: 'out', desc: 'Output file where the converted result should be written.'},
    {arg: 'to-json', type: 'flag', option:'toJason', desc: 'Convert.'},
    {arg: 'compact', type: 'flag', option:'compact', desc: 'Compact JSON form (see www.npmjs.com/package/xml-js).'},
    {arg: 'spaces', type: 'number', option:'spaces', desc: 'Specifies amount of space indentation in the output.'},
    {arg: 'trim', type: 'flag', option:'trim', desc: 'Whitespaces surrounding texts will be trimmed.'},
    {arg: 'sanitize', type: 'flag', option:'sanitize', desc: 'Special xml characters will be replaced with entity codes.'},
    {arg: 'native-type', type: 'flag', option:'nativeType', desc: 'Numbers and boolean will be converted (coreced) to native type instead of text.'},
    {arg: 'always-children', type: 'flag', option:'alwaysChildren', desc: 'Every element will always contain sub-elements (applicable if --compact is not set).'},
    {arg: 'full-tag', type: 'flag', option:'fullTagEmptyElement', desc: 'XML elements will always be in <a></a> form.'},
    {arg: 'no-decl', type: 'flag', option:'ignoreDeclaration', desc: 'Declaration instruction <?xml ..?> will be ignored.'},
    {arg: 'no-attr', type: 'flag', option:'ignoreAttributes', desc: 'Attributes of elements will be ignored.'},
    {arg: 'no-text', type: 'flag', option:'ignoreText', desc: 'Texts of elements will be ignored.'},
    {arg: 'no-cdata', type: 'flag', option:'ignoreCdata', desc: 'Cdata of elements will be ignored.'},
    {arg: 'no-comment', type: 'flag', option:'ignoreComment', desc: 'Comments of elements will be ignored.'},
    {arg: 'text-key', type: 'string', option:'textKey', desc: 'To change the default \'text\' key.'},
    {arg: 'cdata-key', type: 'string', option:'cdataKey', desc: 'To change the default \'cdata\' key.'},
    {arg: 'comment-key', type: 'string', option:'commentKey', desc: 'To change the default \'comment\' key.'},
    {arg: 'attributes-key', type: 'string', option:'attributesKey', desc: 'To change the default \'attributes\' key.'},
    {arg: 'declaration-key', type: 'string', option:'declarationKey', desc: 'To change the default \'declaration\' key.'},
    {arg: 'type-key', type: 'string', option:'typeKey', desc: 'To change the default \'type\' key (applicable if --compact is not set).'},
    {arg: 'cdata-key', type: 'string', option:'name', desc: 'To change the default \'name\' key (applicable if --compact is not set).'},
    {arg: 'elements-key', type: 'string', option:'elements', desc: 'To change the default \'elements\' key (applicable if --compact is not set).'}
];

process.stdin.setEncoding('utf8');
process.stdin.on('readable', function () {
    var chunk = process.stdin.read();
    if (chunk !== null) {
	    stream += chunk;
    }
});
process.stdin.on('end', function () {
	process.stdout.write(xml2json(stream, {}) + '\n');
});

options = common.mapCommandLineArgs(requiredArgs, optionalArgs);


if (options.version) {
	console.log(package.version);
	process.exit(0);
} else if (options.help || process.argv.length <= 2 + requiredArgs.length - 1) {
    console.log(common.getCommandLineHelp('xml-js', requiredArgs, optionalArgs));
    process.exit(process.argv.length <= 2 ? 1 : 0);
} else if ('src' in options) {
    //console.log('---------------' + fs.statSync(options.src).isFile());
    if (fs.statSync(options.src).isFile()) {
        if (options.src.split('.').pop() === 'xml') {
            output = xml2json(fs.readFileSync(options.src, 'utf8'), options);
        } else if (options.src.split('.').pop() === 'json') {
            output = json2xml(fs.readFileSync(options.src, 'utf8'), options);
        }
        if (options.out) {
            fs.writeFileSync(options.out, output, 'utf8');
        } else {
            console.log(output);
        }
        process.exit(0);
    }
} else {
	process.exit(1);
}