backend/backend/urls.py

@@ -13,13 +13,13 @@ from drf_yasg import openapi
 from .api import router
 
 schema_view = get_schema_view(
-   openapi.Info(
-      title="ToDo List",
-      default_version='v1',
-      description="Swagger Interface for ToDo List",
-   ),
-   public=True,
-   permission_classes=(permissions.AllowAny,),
+    openapi.Info(
+        title="ToDo List",
+        default_version="v1",
+        description="Swagger Interface for ToDo List",
+    ),
+    public=True,
+    permission_classes=(permissions.AllowAny,),
 )
 
 urlpatterns = [
@@ -28,5 +28,5 @@ urlpatterns = [
     path("api/token/refresh/", TokenRefreshView.as_view(), name="token_refresh"),
     path("api/", include(router.urls)),
     path("api-auth/", include("rest_framework.urls", namespace="rest_framework")),
-    path('swagger/', schema_view.with_ui('swagger', cache_timeout=0), name='schema-swagger-ui'),
+    path("swagger/", schema_view.with_ui("swagger", cache_timeout=0), name="schema-swagger-ui"),
 ]

frontend/api.py

@@ -13,12 +13,13 @@ API_TODO_ITEMS_DELETE = "api/todo_items/{0}/"
 
 API_LISTS_LIST = "api/lists/"
 API_LISTS_CREATE = "api/lists/"
-API_LISTS_READ = "lists/{0}/"
-API_LISTS_UPDATE = "lists/{0}/"
-API_LISTS_PARTIAL_UPDATE = "lists/{0}/"
-API_LISTS_DELETE = "lists/{0}/"
+API_LISTS_READ = "api/lists/{0}/"
+API_LISTS_UPDATE = "api/lists/{0}/"
+API_LISTS_PARTIAL_UPDATE = "api/lists/{0}/"
+API_LISTS_DELETE = "api/lists/{0}/"
 
-API_TOKEN = "api/token/"
+API_TOKEN_CREATE = "api/token/"
+API_TOKEN_REFRESH = "api/token/refresh/"
 
 
 class UserApi(object):
@@ -61,11 +62,23 @@ class UserApi(object):
 
         """
         token = UserApi._raise_or_return_(
-            requests.post(url=self.get_api(API_TOKEN), json={"username": user, "password": passwd})
+            requests.post(
+                url=self.get_api(API_TOKEN_CREATE), json={"username": user, "password": passwd}
+            )
         )
         self.token = SimpleNamespace(**token)
         return self.token
 
+    def refresh(self):
+        """
+        Refresh existing token
+        """
+        token = UserApi._raise_or_return_(
+            requests.post(url=self.get_api(API_TOKEN_REFRESH), json={"refresh": self.token.refresh})
+        )
+        self.token.access = token["access"]
+        return self.token
+
     def lists_list(self, **argv):
         """
         List all the exsiting to-do lists.
@@ -102,6 +115,43 @@ class UserApi(object):
             )
         )
 
+    def lists_delete(self, id):
+        """
+        Auth required
+
+        Deletes a to-do list by id
+
+        Parameters
+        ----------
+        id: to-do list id to delete
+        """
+        return UserApi._raise_or_return_(
+            requests.delete(
+                url=self.get_api(API_LISTS_DELETE.format(id)),
+                headers=self._access_token_(),
+            )
+        )
+
+    def lists_update(self, title, id):
+        """
+        Rename a new to-do list
+        Auth required
+
+        Parameters
+        ----------
+        title : str
+            New name for a list.
+        id : int
+
+        """
+        return UserApi._raise_or_return_(
+            requests.put(
+                url=self.get_api(API_LISTS_UPDATE.format(id)),
+                json={"title": title},
+                headers=self._access_token_(),
+            )
+        )
+
     def todo_items_list(self, **argv):
         """
         List all the exsiting to-do items.
@@ -119,6 +169,67 @@ class UserApi(object):
             )
         )
 
+    def todo_items_create(self, parent, text="Note"):
+        """
+        Create a new to-do item
+        Auth required
+
+        Parameters
+        ----------
+        parent : id of parent list
+        text : str, optional
+            New note. The default is "Note".
+
+        """
+        return UserApi._raise_or_return_(
+            requests.post(
+                url=self.get_api(API_TODO_ITEMS_CREATE),
+                json={"text": text, "parent": parent, "finished": False},
+                headers=self._access_token_(),
+            )
+        )
+
+    def todo_items_delete(self, id):
+        """
+        Auth required
+
+        Deletes a to-do item by id
+
+        Parameters
+        ----------
+        id: to-do item id to delete
+        """
+        return UserApi._raise_or_return_(
+            requests.delete(
+                url=self.get_api(API_TODO_ITEMS_DELETE.format(id)),
+                headers=self._access_token_(),
+            )
+        )
+
+    def todo_items_update(self, id, text, finished, parent):
+        """
+        Rename a new to-do list
+        Auth required
+
+        Parameters
+        ----------
+        id : int
+            Note id
+        text : str
+            New note for the item.
+        finished : bool
+            New state for the item
+        parent : int
+            Parent list id
+        """
+        return UserApi._raise_or_return_(
+            requests.put(
+                url=self.get_api(API_TODO_ITEMS_UPDATE.format(id)),
+                json={"text": text, "finished": finished, "parent": parent},
+                headers=self._access_token_(),
+            )
+        )
+
     # def create(self, title="Untitled"):
     # """
     # Create a new to-do list
@@ -215,4 +326,8 @@ class UserApi(object):
     @staticmethod
     def _raise_or_return_(response):
         response.raise_for_status()
-        return response.json()
+        try:
+            return response.json()
+        except Exception as e:
+            print(e)
+            return response.content

frontend/api_demo.py

@@ -1,48 +1,50 @@
+import random
 from user import User
 
 
 def print_lists(lists):
     for item in lists:
-        print(f"List: '{item}'", f"Id: {item.id}", "|", "|".join([str(x) for x in item.items]))
+        print(
+            f"List: '{item.title}'", f"Id: {item.id}", "|", "|".join([str(x) for x in item.items_])
+        )
 
 
 DEFAULT_URL = "http://127.0.0.1:8000"
 
 user = User(url=DEFAULT_URL)
 user.auth("root", "root")
+user.refresh()
 
 # Fetch existing lists:
-lists = user.fetchUserLists()
-print("Fecthing...")
-print_lists(lists)
-
-# Remove user list by id:
-user.removeUserList(5)
-lists = user.fetchUserLists()
-print(f"Removing {5}...")
-print_lists(lists)
+print_lists(user.fetchUserLists())
 
 # Append a new list to user:
 print("Appending list...")
 scroll = user.appendUserList(title="a new list!")
-print_lists(lists)
+print_lists(user.fetchUserLists())
 
 # Modify list 0:
 print("Modifyng list...")
-lists[0].modify(title="A new title")
-print_lists(lists)
+user.lists_[0].modify(title=f"A new title №{random.random()}")
+print_lists(user.fetchUserLists())
 
 # Append item to list:
 print("Appending item to last list...")
-item = lists[-1].append(text="this is an item")
-print_lists(lists)
+item = user.lists_[-1].append(text="this is an item")
+print_lists(user.fetchUserLists())
 
 # Modifying item
 print("Modifyng appended item...")
 item.modify(finished=True, text="this is an updated item")
-print_lists(lists)
+print_lists(user.fetchUserLists())
 
-# Removing item at 0
-print("Removing item 0 from list 0...")
-lists[0].remove(0)
-print_lists(lists)
+# Removing item at from last list
+print("Removing the last item from the last list...")
+user.lists_[-1].remove(-1)
+print_lists(user.fetchUserLists())
+
+# Remove user list by id:
+i = user.lists_[0].id
+print(f"Removing {i}...")
+user.removeUserList(i)
+print_lists(user.fetchUserLists())

frontend/login.py

@@ -38,6 +38,13 @@ class LoginFrame(tk.Frame):
             print(ex)
             message.invalid_login()
 
+    # Если захочется реализовать в логине
+    """
+    @property
+    def remember(self):
+        return self.rbtn_var.get()
+    """
+
     def initAUTH(self) -> None:
         """
         Создает окно авторизации программы
@@ -66,3 +73,16 @@ class LoginFrame(tk.Frame):
         # Кнопка авториазции
         btn = tk.Button(self, text="Войти", command=self.login_clicked)
         btn.grid(row=14, column=12, columnspan=3, rowspan=1, sticky="nsew")
+
+        # Если захочется реализовать в логине
+        """
+        # Запомнить пользователя
+        self.rbtn_var = tk.IntVar(value=0)
+        rbtn = tk.Checkbutton(
+            self,
+            text="Запомнить меня",
+            variable=self.rbtn_var,
+            command=None
+        )
+        rbtn.grid(row=15, column=12, columnspan=3, rowspan=1, sticky="nsew")
+        """

frontend/todo_tk.py

@@ -4,13 +4,14 @@ import sys
 import tkinter as tk
 from login import LoginFrame
 from workspace import WorkSpaceFrame
+from user import User
 
 if "win" in sys.platform.lower():
     DEFAULT_URL = "http://localhost:8000"
 else:
     DEFAULT_URL = "http://0.0.0.0:8000"
 
-BASE_W = 580
+BASE_W = 600
 BASE_H = 400
 
 TITLE_APP = "ToDo Application"
@@ -24,11 +25,22 @@ class Application(tk.Tk):
 
     def login(self):
         """Возвращает пользователя - его можно потом сериализовать"""
+        # Пользователь сохранен! Авторизация не нужна!
+        try:
+            user = User.load()
+            if user is not None:
+                return user
+        except Exception as e:
+            print("Failed to restore login:", e)
+        # Не удалось - нужен логин
         self.frame = LoginFrame(master=self, url=DEFAULT_URL)
         while not self.frame.loggedIn:
             self.update_idletasks()
             self.update()
         self.frame.destroy()
+        # Нужно запомнить пользователя
+        # if self.frame.remember:
+        #    self.frame.user.save()
         return self.frame.user
 
     def main(self, user):

frontend/user.py

@@ -1,85 +1,140 @@
 import os
-
+import random
 from datetime import datetime
+from types import SimpleNamespace
+
+from pathlib import Path
+
+import json
+
 from api import UserApi
 
+LIST_UPDATEBLE = ["title"]
+TODO_ITEM_UPDATEBLE = ["text", "finished"]
+UPDATE_ERROR = "Failed to update property: {0}"
+
+DATETIME_STR = "%Y-%m-%dT%H:%M:%S.%fZ"
+
+USER_TOKEN_PATH = os.path.join(Path.home(), ".todo_config.json")
+
+
+def bad_arguments(x, d):
+    return list((set(x) - set(d)))
+
+
+def date_or_str(inpt):
+    if type(inpt) is datetime:
+        return inpt
+    elif type(inpt) is str:
+        return datetime.strptime(inpt, DATETIME_STR)
+    else:
+        return datetime.now()
+
 
 class ToDoList(object):
-    def __init__(self, id, title, created_at=None, items=[], parent=None):
+    def __init__(self, id, title, created_at=None, items=None, parent=None, user=None):
         self.id = id
         self.title = title
-        self.items = items
-        self.created_at = created_at
+        self.items_ = [] if items is None else items
+        self.created_at = date_or_str(created_at)
+        self.user = user
 
     def __iter__(self):
-        for item in self.items:
+        for item in self.items_:
             yield item
 
     def __getitem__(self, index):
-        return self.items[index]
+        return self.items_[index]
 
     def __len__(self):
-        return len(self.items)
+        return len(self.items_)
 
     def __str__(self):
         return f"[{self.id}] {self.title}"
 
     def index(self, value):
-        return self.items.index(value)
+        return self.items_.index(value)
 
-    # ToDo
     def remove(self, index):
-        self.items.remove(self.items[index])
-        self.sync()
+        """
+        Remove item AT INDEX from db
+        """
+        item = self.items_[index]
+        self.items_.remove(item)
+        item.dispose()
 
-    # ToDo
     def append(self, text):
-        item = ToDoItem(id=None, text=text, created_at=datetime.now())
-        self.items.append(item)
-        item.sync()
-        self.sync()
-        return item
+        """
+        Add a new item to db
+        """
+        if "DEBUG" in os.environ:
+            created_item = ToDoItem(id=random.randint(100, 1000), text=text, user=self.user)
+        else:
+            created_item = self.user.todo_items_create(parent=self.id, text=text)
+            created_item = ToDoItem(**created_item, user=self.user)
+        self.items_.append(created_item)
+        return created_item
 
     def modify(self, **argv):
+        bad = bad_arguments(argv.keys(), LIST_UPDATEBLE)
+        if len(bad) > 0:
+            raise RuntimeError(UPDATE_ERROR.format(bad[0]))
         for key, value in argv.items():
             setattr(self, key, value)
         self.sync()
 
-    # ToDo
+    def dispose(self):
+        print(f"To-do list id '{self.id}' is being disposed of...")
+        for item in self.items_:
+            item.dispose()
+        if "DEBUG" in os.environ:
+            return
+        self.user.lists_delete(self.id)
+
     def sync(self):
-        # ToDo send request or store in form
         print(f"Item '{self}' is being synchronized...")
+        if "DEBUG" in os.environ:
+            return
+        self.user.lists_update(title=self.title, id=self.id)
 
 
 class ToDoItem(object):
-    def __init__(self, id, text, finished=False, created_at=None, parent=None):
+    def __init__(self, id, text, finished=False, created_at=None, parent=None, user=None):
         self.id = id
         self.text = text
         self.finished = finished
-        self.created_at = created_at
+        self.created_at = date_or_str(created_at)
+        self.parent = parent
+        self.user = user
 
     def __str__(self):
         return f"[{self.id}] {self.text}"
 
     def modify(self, **argv):
+        bad = bad_arguments(argv.keys(), TODO_ITEM_UPDATEBLE)
+        if len(bad) > 0:
+            raise RuntimeError(UPDATE_ERROR.format(bad[0]))
         for key, value in argv.items():
             setattr(self, key, value)
         self.sync()
 
-    # ToDo
-    def sync(self):
-        # ToDo send request or store in form
-        print(f"Item '{self}' is being synchronized...")
-
-
-class User(UserApi):
-    def auth(self, user, passwd):
+    def dispose(self):
+        print(f"To-do item id '{self.id}' is being disposed of...")
         if "DEBUG" in os.environ:
             return
-        UserApi.auth(self, user, passwd)
+        self.user.todo_items_delete(self.id)
 
-    # ToDo
-    items = [
+    def sync(self):
+        print(f"Item '{self}' is being synchronized...")
+        if "DEBUG" in os.environ:
+            return
+        self.user.todo_items_update(
+            id=self.id, text=self.text, finished=self.finished, parent=self.parent
+        )
+
+
+def make_debug_lists():
+    return [
         ToDoList(
             id=i,
             title=f"List {i}",
@@ -92,17 +147,106 @@ class User(UserApi):
         for i in range(10)
     ]
 
-    # ToDo
+
+class User(UserApi):
+    def auth(self, user, passwd):
+        """
+        Basic authentification
+        """
+        if "DEBUG" in os.environ:
+            return
+        return UserApi.auth(self, user, passwd)
+
+    def remove(self):
+        """
+        Remove the login file from homedir
+        """
+        if "DEBUG" in os.environ:
+            print("Debug mode is on - no login storing")
+            return
+        if not os.path.exists(USER_TOKEN_PATH):
+            return
+        try:
+            os.remove(USER_TOKEN_PATH)
+        except Exception as e:
+            raise RuntimeError("Failed to remove tokens:", e)
+
+    def save(self):
+        """
+        Store user token in homedir
+        """
+        if "DEBUG" in os.environ:
+            print("Debug mode is on - no login storing")
+            return
+        try:
+            with open(USER_TOKEN_PATH, "w") as handler:
+                json.dump(self.token.__dict__, handler)
+        except Exception as e:
+            raise RuntimeError("Failed to store tokens:", e)
+
+    @staticmethod
+    def load():
+        """
+        Restore user token from the file in homedir
+        """
+        if "DEBUG" in os.environ:
+            raise RuntimeError("Debug mode is on - no login storing")
+        if os.path.exists(USER_TOKEN_PATH):
+            try:
+                with open(USER_TOKEN_PATH, "r") as handler:
+                    user = User(token=SimpleNamespace(**json.load(handler)))
+                    user.refresh()
+                    return user
+            except Exception as e:
+                raise RuntimeError("Failed to restore tokens:", e)
+        return None
+
+    # Storing lists - mostly for debug purposes
+    lists_ = make_debug_lists()
+
     def fetchUserLists(self):
-        return self.items
+        """
+        Fetch existing user lists from the server
+        returns: fetched list of ToDoList sorted by creation datetime
+        """
+        print("Fetching lists...")
+        if "DEBUG" in os.environ:
+            return self.lists_
+        user_lists = self.lists_list()["results"]
+        user_items = self.todo_items_list()["results"]
+        todo_lists = {x["id"]: ToDoList(**x, user=self) for x in user_lists}
+        todo_items = [ToDoItem(**x, user=self) for x in user_items]
+        for todo_item in todo_items:
+            # Catching stray items
+            # if not hasattr(toDoItem, "parent"):
+            #    toDoItem.dispose()
+            #    continue
+            todo_lists[todo_item.parent].items_.append(todo_item)
+        for todo_list in todo_lists.values():
+            todo_list.items_ = sorted(todo_list.items_, key=lambda x: x.created_at)
+        self.lists_ = sorted(todo_lists.values(), key=lambda x: x.created_at)
+        return self.lists_
 
-    # ToDo
     def removeUserList(self, id):
-        self.items = [item for item in self.items if item.id != id]
+        """
+        Remove existing user to-do list BY ID from the serverreturns:
+        """
+        to_remove = [item for item in self.lists_ if item.id == id][0]
+        self.lists_.remove(to_remove)
+        # if not ("DEBUG" in os.environ):
+        to_remove.dispose()
+        return self.lists_
 
-    # ToDo
     def appendUserList(self, title):
-        item = ToDoList(id=None, title=title, created_at=datetime.now())
-        self.items.append(item)
-        item.sync()
-        return item
+        """
+        Create a new user list
+        title: title of list to create
+        returns: created item
+        """
+        if "DEBUG" in os.environ:
+            item = ToDoList(id=random.randint(100, 1000), title=title, created_at=datetime.now())
+            self.lists_.append(item)
+            return item
+        created_list = self.lists_create(title=title)
+        created_list = ToDoList(**created_list)
+        return created_list

frontend/workspace.py

@@ -61,8 +61,9 @@ class ToDoItemWidget(tk.Frame):
 
 
 class ToDoListWidget(tk.Frame):
-    def __init__(self, *args, **argv):
+    def __init__(self, *args, delete_list, **argv):
         super().__init__(*args, **argv)
+        self.delete_list = delete_list
 
     def fill(self, itemList):
 
@@ -82,7 +83,7 @@ class ToDoListWidget(tk.Frame):
         add = tk.Button(self, text="Добавить заметку", command=self.add_command)
         add.pack(side="top")
 
-        delete = tk.Button(self, text="Удалить лист", command=placeholder)
+        delete = tk.Button(self, text="Удалить лист", command=self.delete_list)
         delete.pack(side="top")
 
     def update(self, itemList=None):
@@ -106,6 +107,17 @@ class ToDoListWidget(tk.Frame):
 
 
 class WorkSpaceFrame(tk.Frame):
+    def delete_list(self, *args):
+        selection = self.listBox.curselection()
+        cur = selection[0]
+        self.user.removeUserList(self.lists[cur].id)
+        self.lists = self.user.fetchUserLists()
+        self.update_lists()
+        if len(self.lists) > 1:
+            self.listBox.selection_set(first=cur - 1)
+        elif len(self.lists) > 0:
+            self.listBox.selection_set(first=0)
+
     def __init__(self, user, master=None, url=None) -> None:
         """
         Функция инициаизации класса
@@ -118,15 +130,27 @@ class WorkSpaceFrame(tk.Frame):
         self.pack(fill=tk.BOTH, expand=1)
         self.initLayout(user)
 
+    def destroy(self):
+        tk.Tk.destroy(self)
+        if self.rbtn_var.get() > 0:
+            self.user.save()
+        else:
+            self.user.remove()
+
     def initLayout(self, user):
 
+        # Запомнить пользователя
+        self.rbtn_var = tk.IntVar(value=1)
+        rbtn = tk.Checkbutton(self, text="Запомнить меня", variable=self.rbtn_var, command=None)
+        rbtn.pack(anchor="n")
+
         # data
         self.lists = user.fetchUserLists()
 
-        text = tk.Text(self, width=15, height=1)
-        text.pack(anchor="sw")
+        self.add_list_text = tk.Text(self, width=15, height=1)
+        self.add_list_text.pack(anchor="sw")
 
-        add = tk.Button(self, text="Добавить лист", command=placeholder)
+        add = tk.Button(self, text="Добавить лист", command=self.add_list)
         add.pack(anchor="sw")
 
         # select list box
@@ -142,22 +166,54 @@ class WorkSpaceFrame(tk.Frame):
         # add scroll bar to list box
         self.listBox.config(yscrollcommand=scrollbar.set)
 
-        # fill list box
+        # init list view
+        self.update_lists()
+
+        # canvas for todo lists
+        canvas = tk.Canvas(self)
+        canvas.pack(side="left", fill="both", expand=1)
+        scrollbar = tk.Scrollbar(self, orient="vertical")
+        scrollbar.config(command=canvas.yview)
+        scrollbar.pack(side="left", fill="y")
+        canvas.configure(yscrollcommand=scrollbar.set)
+
+        # todo lists
+        self.toDoList = ToDoListWidget(self, delete_list=self.delete_list)
+        self.toDoList.grid_propagate(True)
+        # self.toDoList = ToDoListWidget(canvas)
+        self.toDoList.pack(side="left", fill="y")
+        canvas.bind("<Configure>", lambda *argv: canvas.configure(scrollregion=canvas.bbox("all")))
+        canvas.create_window((0, 0), window=self.toDoList, anchor="nw")
+
+        # select list!
+        if len(self.lists) > 0:
+            self.listBox.selection_set(first=0)
+            self.listBox_selected()
+
+    def update_lists(self):
+        self.listBox.delete(0, "end")
         for item in self.lists:
             s = f"{str(item)}: {item.created_at.strftime('%Y-%m-%d %H:%M:%S')}"
             self.listBox.insert(tk.END, s)
         self.listBox.pack()
-        len(self.lists) > 0 and self.listBox.selection_set(first=0)
+        return len(self.lists)
 
-        # todo lists
-        self.toToList = ToDoListWidget(self)
-        self.toToList.pack(side="left", fill="both", expand=1)
+    def add_list(self, *args):
+        text = self.add_list_text.get(1.0, "end").strip()
+        if len(text) == 0:
+            print("empty name! Not adding!")
+            return
+        self.user.appendUserList(title=text)
+        self.lists = self.user.fetchUserLists()
+
+        # fill list box
+        self.update_lists()
+        len(self.lists) > 0 and self.listBox.selection_set(first=len(self.lists) - 1)
 
     def listBox_selected(self, *args):
-
-        self.toToList.clear()
+        self.toDoList.clear()
 
         selection = self.listBox.curselection()
         cur = selection[0]
 
-        self.toToList.fill(self.lists[cur])
+        self.toDoList.fill(self.lists[cur])