package main

import "html/template"

var homeTemplate = template.Must(template.New("").Parse(`
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script>  
window.addEventListener("load", function(evt) {
    var output = document.getElementById("output");
    var input = document.getElementById("input");
    var ws;

    var print = function(message) {
        var d = document.createElement("div");

        d.textContent = message;

        output.appendChild(d);
        output.scroll(0, output.scrollHeight);
    };

    document.getElementById("open").onclick = function(evt) {
        if (ws) {
            return false;
        }
        ws = new WebSocket("{{.}}");
        ws.onopen = function(evt) {
            print("OPEN");
        }
        ws.onclose = function(evt) {
            print("CLOSE");
            ws = null;
        }
        ws.onmessage = function(evt) {
            print("RESPONSE: " + evt.data);
        }
        ws.onerror = function(evt) {
            print("ERROR: " + evt.data);
        }

        return false;
    };

    document.getElementById("send").onclick = function(evt) {
        if (!ws) {
            return false;
        }
        
		print("SEND: " + input.value);

        ws.send(input.value);

        return false;
    };

    document.getElementById("close").onclick = function(evt) {
        if (!ws) {
            return false;
        }

        ws.close();
        
		return false;
    };

});
</script>
</head>
<body>
<table>
<tr><td valign="top" width="50%">
<p>Click "Open" to create a connection to the server, 
"Send" to send a message to the server and "Close" to close the connection. 
You can change the message and send multiple times.
<p>

<form>
<button id="open">Open</button>
<button id="close">Close</button>
<p><input id="input" type="text" value="Hola!">
<button id="send">Send</button>
</form>

</td><td valign="top" width="50%">
<div id="output" style="max-height: 70vh;overflow-y: scroll;"></div>
</td></tr></table>
</body>
</html>
`))
