from django.http import HttpResponse

from pypy.translator.sandbox import pypy_interact
from cStringIO import StringIO

SANDBOX_BIN = 'pypy-sandbox'

def codepad(request):
    if request.method == 'POST':
        code = request.POST['codepad']
        code_output = StringIO()
        sandproc = pypy_interact.PyPySandboxedProc(SANDBOX_BIN, ['-c', code])
        try:
            sandproc.interact(stdout=code_output, stderr=code_output)
        finally:
            sandproc.kill()

        page = """
            <style type="text/css">
                div {max-width:300px; border:1px solid black;
                font-family:monospace; margin:0 0 10px 0; padding:5px;}
                div h5 {margin:0 0 5px 0; padding:0; background:#eee;}
            </style>
            <div><h5>Code</h5><pre>%s</pre></div>
            <div><h5>Output</h5><pre>%s</pre></div>
            """ % (code, code_output.getvalue())
    else:
        page = """
            <style type="text/css">
                form {max-width:300px;}
                textarea, input {display:block;}
                textarea {width:300px; height:200px;}
                input {float:right;}
            </style>
            <form method="POST">
                <textarea name="codepad"></textarea>
                <input type="submit" value="Run Code"/>
            </form>
            """

    return HttpResponse(page)