completed 38 lesson

.gitignore

+venv
+.idea
+__pycache__*
\ No newline at end of file

.idea/http_framework.iml

@@ -2,7 +2,7 @@
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$" />
-    <orderEntry type="jdk" jdkName="Python 3.11" jdkType="Python SDK" />
+    <orderEntry type="jdk" jdkName="Python 3.11 (http_framework)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>
\ No newline at end of file

.idea/misc.xml

@@ -3,5 +3,5 @@
   <component name="MarkdownSettingsMigration">
     <option name="stateVersion" value="1" />
   </component>
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.11" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.11 (http_framework)" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file

controllers/base.py

+from request import Request
+from response import Response
+
+
+class BaseController:
+    def __init__(self, request: Request, response: Response):
+        self.request = request
+        self.response = response

controllers/pages.py

+from .base import BaseController
+
+
+class PagesController(BaseController):
+    def home(self):
+        self.response.add_header('Content-Type', 'text/html')
+        self.response.set_body('<h1>This is homepage</h1>')
+
+    def about_us(self):
+        self.response.add_header('Content-Type', 'text/html')
+        self.response.set_body('<h1>This is about us page</h1>')

controllers/posts.py

+from controllers.base import BaseController
+
+
+def id_generator():
+    count = 0
+    while True:
+        count += 1
+        yield count
+
+
+id_gen = id_generator()
+
+
+class PostsController(BaseController):
+    posts_db = [
+        {'id': next(id_gen), 'title': 'This is 1 post'},
+        {'id': next(id_gen), 'title': 'This is 2 post'},
+        {'id': next(id_gen), 'title': 'This is 3 post'},
+    ]
+
+    def get_list(self):
+        body = (
+            '<h1>This is posts page</h1>'
+            '<br><form action="/posts" method="POST">'
+            '<label>'
+            '<input type="text" name="title">'
+            '</label>'
+            '<input type="submit">'
+            '</form><br>'
+        )
+
+        for post in self.posts_db:
+            body += f'<h3>{post["id"]} - {post["title"]}'
+
+        self.response.add_header('Content-Type', 'text/html')
+        self.response.set_body(body)
+
+    def create(self):
+        id_ = next(id_gen)
+        self.posts_db.append(
+            {
+                'id': id_,
+                'title': f'This is {id_} post'
+            }
+        )
+
+        self.response.add_header('Content-Type', 'text/html')
+        self.response.set_body('<a href="/posts"">Back to posts list</a>')

errors.py

+from request import Request
+from response import Response
+
+
+def not_found(request: Request, response: Response):
+    response.add_header('Content-Type', 'text/html')
+    response.set_status(Response.HTTP_NOT_FOUND)
+    response.set_body('<h1>404 Not Found</h1>')
+
+
+def internal_server_error(request: Request, response: Response):
+    response.add_header('Content-Type', 'text/html')
+    response.set_status(Response.HTTP_INTERNAL_SERVER_ERROR)
+    response.set_body('<h1>500 Internal Server Error</h1>')

request.py

+import urllib.parse
 from typing import BinaryIO
 
 
@@ -32,4 +33,16 @@ class Request:
     def parse_body(self) -> None:
         if 'Content-Length' in self.headers:
             content_length = int(self.headers['Content-Length'])
-            self.body = self.file.read(content_length)
+            body = self.file.read(content_length)
+
+            if isinstance(body, bytes):
+                decoded = body.decode()
+                parsed = urllib.parse.parse_qs(decoded)
+
+                for k, v in parsed.items():
+                    parsed[k] = ' '.join(v)     # noqa
+
+                self.body = parsed
+
+            else:
+                self.body = self.file.read(content_length)

router.py

+import errors
+from controllers.base import BaseController
+from request import Request
+from response import Response
+
+
+class Router:
+    def __init__(self):
+        self.routes = {
+            'get': [],
+            'post': []
+        }
+
+    def add(self, http_method: str, uri: str, ctrl: BaseController, ctrl_method: str):
+        self.routes[http_method].append(
+            {
+                'uri': uri,
+                'ctrl': ctrl,
+                'ctrl_method': ctrl_method
+            }
+        )
+
+    def get(self, *args):
+        self.add('get', *args)
+
+    def post(self, *args):
+        self.add('post', *args)
+
+    def run(self, request: Request, response: Response):
+        http_method = request.method.lower()    # post
+        method_routes = self.routes[http_method]    # [{'uri': 'some_uri', 'ctrl': Ctrl. 'ctrl_method': 'home'}]
+
+        route = None
+        for r in method_routes:
+            if r['uri'] == request.uri:
+                route = r
+                break
+
+        print(route)
+        if not route:
+            return errors.not_found(request, response)
+
+        try:
+            ctrl = route['ctrl'](request, response)
+            getattr(ctrl, route['ctrl_method'])()
+
+        except BaseException as e:
+            print(e)
+            return errors.internal_server_error(request, response)

server.py

 import socketserver
 
+from controllers.pages import PagesController
+from controllers.posts import PostsController
 from request import Request
 from response import Response
+from router import Router
 from static_responder import StaticResponder
+import errors
 
 HOST, PORT = '127.0.0.1', 1025
 
+# CRUDL - Create, Read, Update, Delete, List
+# /posts
+# GET - /posts
+# GET - /posts/{id}
+# POST - /posts
+# PUT/PATCH - /posts/{id}
+# DELETE - /posts/{id}
+
+
+router = Router()
+router.get('/', PagesController, 'home')
+router.get('/about-us', PagesController, 'about_us')
+router.get('/posts', PostsController, 'get_list')
+router.post('/posts', PostsController, 'create')
+
 
 class MyTCPHandler(socketserver.StreamRequestHandler):
     def handle(self) -> None:
         request = Request(file=self.rfile)
         response = Response(file=self.wfile)
-
         static_responder = StaticResponder(request, response, 'static')
 
-        if static_responder.file:
-            static_responder.prepare_response()
-        else:
-            response.add_header('Content-Type', 'text/html')
-            response.add_header('Connection', 'close')
-            response.set_body('<h1>Hello world!</h1>')
+        router.run(request, response)
 
         print(
             f'Method: {request.method}\n'

static/index.html

-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <title>Title</title>
-</head>
-<body>
-    <h1>Hello world!</h1>
-</body>
-</html>
\ No newline at end of file

static/styles.css

@@ -2,6 +2,10 @@
     text-align: center;
 }
 
+h1 {
+    color: red
+}
+
 .container {
     margin: 0 auto;
     width: 80%;

templates/index.html

+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <link rel="stylesheet" href="../static/styles.css">
+    <title>Title</title>
+</head>
+<body>
+  <h1>Hello {{ user.name|title }} {{ user.surname|title }} </h1>
+  <h3>Today: {{ user.current_datetime }}</h3>
+  <h4>Phone: {{ user.phone }}</h4>
+  <form action="/posts" method="POST">
+      <label>
+        <input type="text" name="title">
+      </label>
+  </form>
+
+  {{ user.contacts|join(', ') }}
+<!--  <ol>-->
+<!--    {% for i in user.contacts  %}-->
+
+<!--    <li>{{ i }}</li>-->
+
+<!--    {% endfor %}-->
+<!--  </ol>-->
+
+  <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Assumenda nostrum quasi voluptate. Ad blanditiis deserunt distinctio error facilis incidunt maxime nostrum, numquam placeat? Error hic obcaecati quas quis saepe velit.</p>
+</body>
+</html>
\ No newline at end of file