import sys
import unittest
sys.path.insert(0, '../src')
import scriptform
from StringIO import StringIO
import json
import os
import copy
import thread
import time
import requests
import StringIO

base_config = {
    "title": "test",
    "forms": [
        {
            "name": "test",
            "title": "title",
            "description": "description",
            "script": "test.sh",
            "fields": [],
        }
    ]
}


class FormConfigTestCase(unittest.TestCase):
    """
    Test the proper low-level handling of form configurations such as loading,
    callbacks, etc.
    """
    @classmethod
    def tearDownClass(cls):
        if os.path.exists('tmp_stdout'):
            os.unlink('tmp_stdout')
        if os.path.exists('tmp_stderr'):
            os.unlink('tmp_stderr')

    def testMissing(self):
        """Missing script callbacks should raise an OSError"""
        self.assertRaises(OSError, scriptform.ScriptForm, 'test_formconfig_missingscript.json')

    def testNoExec(self):
        """Non-executable script callbacks should raise an ScriptFormError"""
        self.assertRaises(scriptform.ScriptFormError, scriptform.ScriptForm, 'test_formconfig_noexec.json')

    def testHidden(self):
        """Hidden forms should not show up in the list of forms"""
        sf = scriptform.ScriptForm('test_formconfig_hidden.json')
        fc = sf.get_form_config()
        self.assertTrue(fc.get_visible_forms() == [])

    def testCallbackStore(self):
        """Test a callback that returns output in strings"""
        sf = scriptform.ScriptForm('test_formconfig_callback.json')
        fc = sf.get_form_config()
        res = fc.callback('test_store', {})
        self.assertEquals(res['exitcode'], 33)
        self.assertTrue('stdout' in res['stdout'])
        self.assertTrue('stderr' in res['stderr'])

    def testCallbackRaw(self):
        """Test a callback that returns raw output"""
        sf = scriptform.ScriptForm('test_formconfig_callback.json')
        fc = sf.get_form_config()
        stdout = file('tmp_stdout', 'w+') # can't use StringIO
        stderr = file('tmp_stderr', 'w+')
        exitcode = fc.callback('test_raw', {}, stdout, stderr)
        stdout.seek(0)
        stderr.seek(0)
        self.assertTrue(exitcode == 33)
        self.assertTrue('stdout' in stdout.read())

class FormDefinitionTest(unittest.TestCase):
    """
    Form Definition tests. Mostly directly testing if validations work.
    """
    def setUp(self):
        self.sf = scriptform.ScriptForm('test_formdefinition_validate.json')
        self.fc = self.sf.get_form_config()

    def testValidateString(self):
        fd = self.fc.get_form_def('test_val_string')

        form_values = {"val_string": "123"}
        errors, values = fd.validate(form_values)
        self.assertTrue('val_string' in errors)
        self.assertTrue('Minimum' in errors['val_string'][0])

        form_values = {"val_string": "1234567"}
        errors, values = fd.validate(form_values)
        self.assertTrue('val_string' in errors)
        self.assertTrue('Maximum' in errors['val_string'][0])

    def testValidateString(self):
        fd = self.fc.get_form_def('test_val_integer')

        form_values = {"val_integer": 3}
        errors, values = fd.validate(form_values)
        self.assertTrue('val_integer' in errors)
        self.assertTrue('Minimum' in errors['val_integer'][0])

        form_values = {"val_integer": 7}
        errors, values = fd.validate(form_values)
        self.assertTrue('val_integer' in errors)
        self.assertTrue('Maximum' in errors['val_integer'][0])

    def testValidateFloat(self):
        fd = self.fc.get_form_def('test_val_float')

        form_values = {"val_float": 2.05}
        errors, values = fd.validate(form_values)
        self.assertTrue('val_float' in errors)
        self.assertTrue('Minimum' in errors['val_float'][0])

        form_values = {"val_float": 2.31}
        errors, values = fd.validate(form_values)
        self.assertTrue('val_float' in errors)
        self.assertTrue('Maximum' in errors['val_float'][0])


class WebAppTest(unittest.TestCase):
    """
    Test the web app by actually running the server and making web calls to it.
    """
    @classmethod
    def setUpClass(cls):
        def server_thread(sf):
            sf.run(listen_port=8002)
        cls.sf = scriptform.ScriptForm('test_webapp.json')
        thread.start_new_thread(server_thread, (cls.sf, ))
        # Wait until the webserver is ready
        while True:
            time.sleep(0.1)
            if cls.sf.running:
                break

    @classmethod
    def tearDownClass(cls):
        cls.sf.shutdown()

    def testHidden(self):
        """Hidden forms shouldn't appear in the output"""
        r = requests.get('http://localhost:8002/')
        self.assertNotIn('Hidden form', r.text)

    def testShown(self):
        """Non-hidden forms should appear in the output"""
        r = requests.get('http://localhost:8002/')
        self.assertIn('Output escaped', r.text)

    def testOutputEscaped(self):
        """Form with 'escaped' output should have HTML entities escaped"""
        data = {
            "form_name": 'output_escaped',
            "string": '<foo>'
        }
        r = requests.post('http://localhost:8000/submit', data)
        self.assertIn('string=&lt;foo&gt;', r.text)


if __name__ == '__main__':
    unittest.main()