var market_swap = (function(){
    var div = document.getElementById("market_swap");
    var display = document.createElement("p");
    div.appendChild(display);

    var mid = text_input("market id: ", div);
    div.appendChild(br());
    var give = text_input("amount to spend: ", div);
    div.appendChild(br());
    var take = text_input("recieve at least this much: ", div);
    div.appendChild(br());
    var direction = text_input("direction of swap: ", div);
    div.appendChild(br());
    var button = button_maker2("swap", doit);
    div.appendChild(button);

    async function doit(){
        var Fee = 152050;
        //merkle.request_proof("accounts", keys.pub(), function(Acc){
        var Acc = await merkle.arequest_proof("accounts", keys.pub());
            //merkle.request_proof("markets", mid.value, async function(market){
        var market = await merkle.arequest_proof("markets", mid.value);
        //-record(market, {id, cid1, type1, amount1, cid2, type2, amount2, shares}).
        var CID1 = market[2];
        var Type1 = market[3];
        var CID2 = market[5];
        var Type2 = market[6];
        var Nonce = Acc[2] + 1;
        //-record(market_swap_tx, {from, nonce, fee, mid, give, take, direction, cid1, type1, cid2, type2}).
        var tx = ["market_swap_tx", keys.pub(),
                  Nonce, Fee,
                  mid.value, parseInt(give.value),
                  parseInt(take.value),
                  parseInt(direction.value),
                  CID1, Type1,
                  CID2, Type2];
        console.log(tx);
        var stx = keys.sign(tx);
        //post_txs([stx], function(msg){
        var msg = await apost_txs([stx]);
        display.innerHTML = msg
        //});
        //});
        //});
    };
    return({
        mid: function(x){mid.value = x},
        give: function(x){give.value = x},
        take: function(x){take.value = x},
        direction: function(x){direction.value = x},
        doit: doit
    });
})();