var fs = require('fs'),
    xml2js = require('xml2js');

var parser = new xml2js.Parser();
fs.readFile(__dirname + '/company.xml', function(err, data) {
    parser.parseString(data, function (err, result) {
        var team = result.company['team-members'][0]['team-member'];
        var lines = [];
        team.forEach(member => {
            // create a line for each review, with the email as the first column
            var reviews = member.reviews[0].review;
            if (!reviews) return;
            var reviewLines = reviews.map(review => [
                member.email[0],
                ...Object.keys(review).map(key => {
                    var item = review[key][0];
                    // for the review Q&A, condense them into one field
                    if (key === 'reviewee-answers' || key === 'reviewer-answers') {
                        // the answers are in a property like 'reviewee-answer'
                        // so chop the 's' off the end of the key
                        item = item[key.slice(0, key.length - 1)];
                        if (!item) {
                            return key + '';
                        }
                        item = item.map(q => {
                            var question = q['baked-review-question'][0].content[0];
                            var answer = q.content[0];
                            return `${question} // ${safeEscapeChars(answer) || 'n/a'}`;
                        }).join(' // ');
                    }
                    return key + ': ' + (safeEscapeChars(item) || 'n/a');
                })
            ].join('\t'));
            lines = lines.concat(reviewLines);
        });
        fs.writeFile(__dirname + '/output.tsv', lines.join('\n'), function(err) {
            if (err) console.error(err);
            console.log(`OK: ${lines.length}`);
        });
    });
});

function safeEscapeChars(item) {
    return item
        && item.replace
        && item.replace(/\t/g,'\\t').replace(/\r?\n/g, '\\n');
}