importScripts('jquery.js');
importScripts('openpgp.js');

function attachments(files) {
    var res = '';
    if (files) files.forEach(function(file) {
        if (file.type.match("^image/"))
            res += '<img src="'+'data:'+file.type+';base64,' + btoa(file.content)+'"/>';
    });
    return res;
}

addEventListener('message', function(data) {
    var e = data.e;
    var key = data.key;
    var message = openpgp.message.readArmored(e["msg"]);
    var privkey = privateKey().keys[0];
    if (privkey.decrypt(password))
        openpgp.decryptAndVerifyMessage(privkey, key.keys, message)
        .then(function(msg) {
            var message = JSON.parse(msg.text);
            // todo: check msg.signatures[0].valid
            postMessage('<div id="id'+(e["id"])+'" class="msg '+
                        (e["user"]==userid()?"me":"other")+
                        '"><div class="header">'+
                        '<span class="date">'+
                        (new Date(1000*Number(e["time"]))).toLocaleString()+
                        '</span><span class="sender">'+
                        '<a href="javascript:void(0)" onclick="setreceiver(this.innerHTML)">'+
                        e["user"]+
                        '</a></span></div>'+
                        attachments(message.files)+
                        '<div class="text">'+
                        message.text+
                        '</div></div><div class="clear"/>');
        })
        .catch(function(e) {
            // not for me
        });
}, false);