pcewebpython · ericae14 · Jan 11, 2021
diff --git a/.vscode/settings.json b/.vscode/settings.json
@@ -0,0 +1,12 @@
+{
+    "python.testing.unittestArgs": [
+        "-v",
+        "-s",
+        ".",
+        "-p",
+        "*test*.py"
+    ],
+    "python.testing.pytestEnabled": false,
+    "python.testing.nosetestsEnabled": false,
+    "python.testing.unittestEnabled": true
+}
diff --git a/__pycache__/tests.cpython-37.pyc b/__pycache__/tests.cpython-37.pyc
diff --git a/calculator.py b/calculator.py
@@ -40,19 +40,104 @@
 
 
 """
+import traceback
+
+def html_wrapper(body):
+    result = f"""
+<html>
+<head><title>Calculator</title></head>
+<body>
+{body}
+</body>
+</html>
+"""
+    return result
+
+def instructions(*args):
+    """Index page"""
+    page = """
+<h1>Calculator</h1>
+
+<h2>Instructions:</h2>
+
+<ul>
+    <li>To access the calculator function in your browser enter http://localhost:8080/.</li> 
+    <li>Enter in the operation you wish to use after the slash "/": Add, Subtract, Multiply, or divide.</li>
+    <li>After the operation enter slash "/" and the first number in the operation.</li>
+    <li>Enter another slash "/" followed by the second number in the operation.</li>
+    <li>Press Enter.</li>
+</ul>
+
+<h2>Examples:</h2>
+
+<table>
+    <tr>
+        <th>Operation</th>
+        <th>Example Link</th>
+    </tr>
+    <tr>
+        <td>Add</td>
+        <td><a href="http://localhost:8080/add/23/42">http://localhost:8080/add/23/42</a></td>
+    </tr>
+    <tr>
+        <td>Subtract</td>
+        <td><a href="http://localhost:8080/subtract/23/42">http://localhost:8080/subtract/23/42</a></td>
+    </tr>
+    <tr>
+        <td>Multiply</td>
+        <td><a href="http://localhost:8080/multiply/3/5">http://localhost:8080/multiply/3/5</a></td>
+    </tr>
+    <tr>
+        <td>Divide</td>
+        <td><a href="http://localhost:8080/divide/22/11">http://localhost:8080/divide/22/11</a></td>
+    </tr>
+</table>
+
+"""
+    return page
 
 
 def add(*args):
     """ Returns a STRING with the sum of the arguments """
 
     # TODO: Fill sum with the correct value, based on the
     # args provided.
-    sum = "0"
-
-    return sum
+    # sum = "0"
+    result = str(sum(args))
+    result += '</br><a href="/">Back</a>'
+    return result
 
 # TODO: Add functions for handling more arithmetic operations.
 
+
+def subtract(*args):
+    """Returns a string with the result a-b"""
+
+    result = str(args[0] - args[1])
+    result += '</br><a href="/">Back</a>'
+
+    return result
+
+def divide(*args):
+    """Return a string with the result of """
+    try:
+        result = str(args[0] / args[1])
+
+    except ZeroDivisionError:
+        result = "You can't divide by zero"
+    result += '</br><a href="/">Back</a>'
+
+    return result
+
+def multiply(*args):
+    """Returns the result of a*b"""
+
+    result = str(args[0] * args[1])
+    result += '</br><a href="/">Back</a>'
+
+    return result
+
+
 def resolve_path(path):
     """
     Should return two values: a callable and an iterable of
@@ -63,8 +148,30 @@ def resolve_path(path):
     # examples provide the correct *syntax*, but you should
     # determine the actual values of func and args using the
     # path.
-    func = add
-    args = ['25', '32']
+    # func = add
+    # args = ['25', '32']
+
+    funcs = {
+            "add": add, 
+            "subtract": subtract,
+            "multiply": multiply,
+            "divide": divide, 
+            "instructions" : instructions
+            }
+    # print(f"!{path}!")
+    if "favicon.ico" in path or len(path) < 7:
+        func_name = "instructions"
+        left = "0"
+        right = "0"
+    else:
+        func_name, left, right = path.split('/')[1:4]
+
+    args = [int(left), int(right)]
+
+    try:
+      func = funcs[func_name]
+    except KeyError:
+      raise NameError
 
     return func, args
 
@@ -76,9 +183,31 @@ def application(environ, start_response):
     #
     # TODO (bonus): Add error handling for a user attempting
     # to divide by zero.
-    pass
+    # pass
+
+    status = "200 OK"
+    headers = [('Content-type', 'text/html')]
+    try:
+        path = environ.get('PATH_INFO', None)
+        func, args = resolve_path(path)
+        body = html_wrapper(func(*args))
+    except NameError:
+        status = "404 Not Found"
+        body = html_wrapper("<h1>Not Found</h1>")
+    except Exception:
+        status = "500 Internal Server Error"
+        body = html_wrapper("<h1>Internal Server Error</h1>")
+        print(traceback.format_exc())
+    finally:
+        headers.append(('Content-length', str(len(body))))
+        start_response(status, headers)
+        return [body.encode('utf8')]
+
 
 if __name__ == '__main__':
     # TODO: Insert the same boilerplate wsgiref simple
     # server creation that you used in the book database.
-    pass
+    # pass
+    from wsgiref.simple_server import make_server
+    srv = make_server('localhost', 8080, application)
+    srv.serve_forever()
diff --git a/tests.py b/tests.py
@@ -3,6 +3,13 @@
 import http.client
 import random
 
+"""
+http://localhost:8080/multiply/3/5
+http://localhost:8080/add/23/42
+http://localhost:8080/subtract/23/42
+http://localhost:8080/divide/22/11
+http://localhost:8080/  
+"""
 
 class WebTestCase(unittest.TestCase):
     """tests for the WSGI Calculator"""