var tickets = [
    // List of tickets to migrate. 
    "http://bugs.jquery.com/ticket/XXXX",
    "http://bugs.jquery.com/ticket/YYYY",
];

var request = require('request'),
    jsdom = require('jsdom'),
    apiPrefix = 'https://api.github.com/repos/jquery/jquery/';

function getConfig() {
    return {
        method: 'POST',
        auth: {
            user: GENERATED_API_TOKEN,
            pass: 'x-oauth-basic',
        },
        headers: {
            'User-Agent': 'mzgol-migration-script',
            'Content-Type': 'application/x-www-form-urlencoded; charset=utf-8',
        },
    };
}

function handleTicket() {
    var $, title, description, owner, milestone, blocking, blockedby,
        config, version, reporter,
        labels = [],
        ticket = tickets[0];

    console.log('\n\n\n *** Ticket ' + ticket + ' *** ');
    request(ticket, function (error, response, body) {
        if (error || response.statusCode !== 200) {
            console.error(ticket, error || response.statusCode);
            setTimeout(function () {
                handleTicket();
            }, 1000);
            return;
        }
        tickets.shift();
        jsdom.env(body, ['http://code.jquery.com/jquery-2.1.1.js'], function (errors, window) {
            if (errors) {
                console.error(errors);
                throw errors;
            }
            $ = window.$;
            $.fn.fixBugLinks = function () {
                return this.each(function () {
                    $(this).find('a[href^="/"]').each(function () {
                        $(this).attr('href', 'http://bugs.jquery.com' +
                            $(this).attr('href'));
                    });
                });
            }

            title = $('#ticket .summary').text().trim();
            reporter = $('#ticket .properties [headers=h_reporter]').text().trim();
            description = 'Originally reported by ' + reporter + ' at: ' + ticket + '\n' +
                ($('#ticket .description .searchable').fixBugLinks().html() || '').trim();

            owner = $('#ticket .properties [headers=h_owner]').text().trim();
            if (owner === 'gibson0421') {
                owner = 'gibson042';
            }
            else if (owner === 'm_gol') {
                owner = 'mzgol';
            } else if (owner.indexOf('@') !== -1 ||
                ['pferreir', 'sylvain courcoux', 'jlukic'].indexOf(owner) !== -1) {
                owner = undefined;
            }

            milestone = $('#ticket .properties [headers=h_milestone]').text().trim().toLowerCase();
            if (milestone === '1.12/2.2') {
                milestone = 2; //'3.0.0';
            }
            else if (milestone === '1.12') {
                milestone = 2; //'3.0.0';
                labels.push('compat-only');
            }
            else if (milestone === '2.2') {
                milestone = 2; //'3.0.0';
                labels.push('master-only');
            }
            else if (milestone === '1.next/2.next') {
                milestone = 3; //'future';
            }
            else if (milestone === '1.next') {
                milestone = 3; //'future';
                labels.push('compat-only');
            }
            else if (milestone === '2.next') {
                milestone = 3; //'future';
                labels.push('master-only');
            } else {
                milestone = undefined;
            }

            version = $('#ticket .properties [headers=h_version]').text().trim();
            blocking = $('#ticket .properties [headers=h_blocking]').text().trim();
            blockedby = $('#ticket .properties [headers=h_blockedby]').text().trim();

            if (version) {
                description += '<p>Issue reported for jQuery ' + version + '</p>'
            }
            if (blocking) {
                description += '<p>Blocking: ' + blocking + '</p>'
            }
            if (blockedby) {
                description += '<p>Blocked by: ' + blockedby + '</p>'
            }

            // Create an issue.
            console.log('Creating an issue: ', title);
            config = getConfig();
            config.url = apiPrefix + 'issues';
            config.body = JSON.stringify({
                title: title,
                body: description,
                assignee: owner || undefined,
                milestone: milestone,
                labels: labels,
            });
            console.log(config);
            request(config, function (error, response, body) {
                if (error || response.statusCode !== 201) {
                    console.error(error || [response.statusCode, response.body]);
                    throw new Error('Creating an issue failed.\n', title);
                }
                body = JSON.parse(body);
                var issueNumber = body.number;

                // Create comments.
                var changes = $('#changelog > .change').toArray();

                function addComment() {
                    if (!changes.length) {
                        if (tickets.length) {
                            setTimeout(function () {
                                handleTicket();
                            });
                        }
                        return;
                    }
                    var config;
                    var change = changes.shift();
                    var comment = $(change).find('.comment').fixBugLinks().html().trim();
                    if (comment) {
                        var author = $(change)
                            .find('h3.change').text().replace(/(?:.|\n)*ago by /, '').trim();
                        comment = '**Comment author: ' + author + '**\n' + comment;

                        config = getConfig();
                        config.url = apiPrefix + 'issues/' + issueNumber + '/comments';
                        config.body = JSON.stringify({
                            body: comment,
                        });
                        console.log('Creating a comment...');
                        request(config, function (error, response, body) {
                            if (error || response.statusCode !== 201) {
                                console.error(error || [response.statusCode, response.body]);
                                throw new Error('Creating a comment failed.\n', comment);
                            }
                            setTimeout(function () {
                                addComment();
                            });
                        });
                    } else {
                        setTimeout(function () {
                            addComment();
                        });
                    }
                }

                addComment();
            });
        });
    });
}

handleTicket();