back-end communication set up, base screen implemented

src/justgetit/app.py

@@ -7,13 +7,14 @@ from justgetit.register import Register
 from justgetit.configuration import Configuration
 from justgetit.providekey import ProvideKey
 from justgetit.lists import Lists
-
+from justgetit.backend import BackEnd
 
 class JustEatIt(toga.App):
     login_screen = toga.Box()
     register_screen = toga.Box()
     providekey_screen = toga.Box()
     lists_screen = toga.Box()
+    backend = None
     configuration = None
     last_screen_width = SCREENWIDTH
 
@@ -38,6 +39,7 @@ class JustEatIt(toga.App):
         self.register_screen = Register()
         self.providekey_screen = ProvideKey()
         self.lists_screen = Lists()
+        self.backend = BackEnd(self)
 
         self.main_window = toga.MainWindow(title=self.formal_name)
 
@@ -65,7 +67,7 @@ class JustEatIt(toga.App):
 
         if width < SCREENWIDTH:
             # Phone-like: fill available width
-            elf.last_screen_width = width
+            self.last_screen_width = width
         else:
             self.last_screen_width = SCREENWIDTH
         # set actie screen to the corre ct width

src/justgetit/backend.py

@@ -0,0 +1,52 @@
+from justgetit.constants import *
+import httpx
+import json
+import toga
+
+
+class BackEnd():
+    """
+    This is the interface for the backend.
+    Its a bit over the top to subclass it from a widget, but this way it has access to the app
+    """
+    application = None
+
+    def __init__(self, app):
+        self.application = app
+
+
+    async def post(self, endpoint, parameters, callback):
+        """
+        Call the server, always with a POST, for a specific endpoint and the parameters
+        in the body
+        
+        :param endpoint: the endpoint without /api/ (no slashes)
+        :param parameters: A dict with the parameters for the call
+        :param callback: def in the calling function to return to
+        """
+        self.status = 0
+        self.payload = None
+        if len(endpoint)>2:
+            try:
+                async with httpx.AsyncClient() as client:
+                    response = await client.post(f"{API}/{endpoint}", data=parameters)
+                self.payload = response.json()
+                self.status = int(self.payload['status'])
+                print(f" payload {self.payload}")
+            except httpx.RequestError as exc:
+                self.status = -2
+            
+            # status 2 means we are in offline mode
+            if self.status == -2:
+                pass
+            elif self.status == 0:
+                await self.application.main_window.dialog(
+                    toga.InfoDialog("Oops", self.payload['message'])            
+                )
+            elif self.status == 2:
+                await self.application.main_window.dialog(
+                    toga.InfoDialog("Thank you", self.payload['message'])            
+                )
+
+            callback(parameters, self.payload)
+

src/justgetit/basepage.py

@@ -1,6 +1,6 @@
 import toga
 from toga.style import Pack
-from toga.style.pack import COLUMN, ROW, END, START, CENTER, HIDDEN, JUSTIFY
+from toga.style.pack import COLUMN, ROW, END, START, CENTER, HIDDEN, VISIBLE, JUSTIFY
 # from justgetit.constants import SCREENHEIGHT, SCREENWIDTH
 import asyncio
 from justgetit.constants import *
@@ -67,6 +67,43 @@ class BasePage(toga.Box):
             )
         )
 
+
+        # the warning text box
+        self.warningtext = toga.Label("warning here",
+            style=Pack(margin=10,
+                       background_color="#eee",
+                       text_align=JUSTIFY)
+        )
+
+        warningline_inner = toga.Box(
+            children = [self.warningtext],
+            style=Pack(
+                direction=COLUMN,
+                justify_content=CENTER,
+                margin=2,
+                background_color="#eee"
+            )
+        )
+
+        self.warningline_outer = toga.Box(
+            children = [warningline_inner],
+            style=Pack(
+                direction=COLUMN,
+                justify_content=CENTER,
+                margin=24,
+                background_color="#ccc",
+            )
+        )
+
+        self.warning_placeholder = toga.Box(
+            style=Pack(
+                height=1,
+                width=1
+            )
+        )
+
+        self.warning_box = self.warning_placeholder 
+
         # add image 
         if self.page_pngimage:
             center_image = toga.Image(f"images/{self.page_pngimage}.png")
@@ -79,6 +116,7 @@ class BasePage(toga.Box):
         # wrapping up the page elements header liner and body
         self.add(menu_bar_outer)
         self.add(liner)
+        self.add(self.warning_box)
         self.add(self.content_box)
         self.style=Pack(
                 direction=COLUMN,
@@ -95,7 +133,8 @@ class BasePage(toga.Box):
         """
         self.content_box.style.width = w
 
-    async def dialog(self, widget, **kwargs):
+    async def display_warning(self, message):
-        ask_a_question = toga.InfoDialog(
+        self.warningtext.text = message
-            "Help", 
+        self.warning_box = self.warningline_outer
-            "some text")
+        await asyncio.sleep(5)
+        self.warning_box = self.warning_placeholder

src/justgetit/login.py

@@ -66,33 +66,23 @@ class Login(BasePage):
         self.content_box.add(self.password_input)
         self.content_box.add(save_button_box)
 
+    def goto_registration(self, dummy):
+        self.app.goto_next_page_by_name(PAGE_REGISTER)
+
     async def login_button_pressed(self, widget):
-        self.result = 0
-        self.message = ''
         user = self.name_input.value
         pwd = self.password_input.value
 
-        if len(user)>0 and len(pwd)>0:
+        if len(user)>1 and len(pwd)>1:
-            data = {'user': user, 'password': pwd}
+            parameters = {}
-            try:
+            parameters['user'] = user
-                async with httpx.AsyncClient() as client:
+            parameters['password'] = pwd
-                    response = await client.post(API+'/login', data=data)
+            await self.app.backend.post('login', parameters, self.after_backend_login)
-                payload = response.json()
-                print(payload)
-                self.result = int(payload['status'])
-                if 'message' in payload:
-                    self.message = payload['message']
-            except httpx.RequestError as exc:
-                self.result = -2
 
-            if self.result == 1:
+    def after_backend_login(self, parameters, return_data):
+        if return_data['status'] > 0:
             # store login etc in config
-                self.app.configuration.store_login(user, pwd)
+            self.app.configuration.store_login(parameters['user'], parameters['password'])
             # goto lists screen
             self.app.goto_next_page_by_name(PAGE_LISTS)
-            else:
+
-                await self.app.main_window.dialog(
-                    toga.InfoDialog("Login error", self.message)            
-                )
-    def goto_registration(self, dummy):
-        self.app.goto_next_page_by_name(PAGE_REGISTER)

src/justgetit/providekey.py

@@ -53,40 +53,11 @@ class ProvideKey(BasePage):
             )
         )
 
-        # # the help text box
-        # self.helptext = toga.Label(HELP_ON_KEY,
-        #     style=Pack(margin=10,
-        #                background_color="#eee",
-        #                text_align=JUSTIFY)
-        # )
-
-        # self.helpbox_inner = toga.Box(
-        #     children = [self.helptext],
-        #     style=Pack(
-        #         direction=COLUMN,
-        #         justify_content=CENTER,
-        #         margin=2,
-        #         background_color="#eee"
-        #     )
-        # )
-
-        # self.helpbox = toga.Box(
-        #     children = [self.helpbox_inner],
-        #     style=Pack(
-        #         direction=COLUMN,
-        #         justify_content=CENTER,
-        #         margin=24,
-        #         background_color="#ccc",
-        #         visibility=HIDDEN
-        #     )
-        # )
-
-
         # wrapping up the windows elements
         self.content_box.add(self.app_key)
         self.content_box.add(save_button_box)
 
-    async def save_button_pressed(self, widget):
+    async def save_button_pressed__(self, widget):
         self.result = 0
         print(self.app_key.value)
         if len(self.app_key.value)>1:
@@ -126,3 +97,16 @@ class ProvideKey(BasePage):
             print("The user said yes!")
         else:
             print("The user said no.")
+
+    async def save_button_pressed(self, widget):
+        if len(self.app_key.value)>1:
+            parameters = {}
+            parameters['key'] = self.app_key.value
+            await self.app.backend.post('validate_key', parameters, self.after_backend_validation)
+
+    def after_backend_validation(self, parameters, return_data):
+        if return_data['status'] > 0:
+            self.app.configuration.store_app_key(parameters['key'])
+            # goto login screen
+            self.app.goto_next_page_by_name(PAGE_LOGIN)
+

src/justgetit/register.py

@@ -28,7 +28,7 @@ class Register(BasePage):
 
         # Name input
         self.name_input = toga.TextInput(
-            placeholder="Could be you here",
+            placeholder="Are you in for this?",
             style=Pack(
                 width=250,
                 margin_bottom=10
@@ -36,12 +36,21 @@ class Register(BasePage):
         )
         # Password input
         self.password_input = toga.PasswordInput(
-            placeholder="Feeling lucky?",
+            placeholder="Trust me with your secret?",
             style=Pack(
                 width=250,
                 margin_bottom=20
             )
         )
+        # Password input validation
+        self.password_input_validation = toga.PasswordInput(
+            placeholder="...and again?",
+            style=Pack(
+                width=250,
+                margin_bottom=20
+            )
+        )
+
         # Save button
         save_button = toga.Button(
             icon=toga.Icon("images/save"),
@@ -64,43 +73,30 @@ class Register(BasePage):
         # wrapping up the windows elements
         self.content_box.add(self.name_input)
         self.content_box.add(self.password_input)
+        self.content_box.add(self.password_input_validation)
         self.content_box.add(save_button_box)
 
+    def goto_login(self, dummy):
+        self.app.goto_next_page_by_name(PAGE_LOGIN)
 
     async def register_button_pressed(self, widget):
-        self.result = 0
-        self.message = ''
         user = self.name_input.value
         pwd = self.password_input.value
-        pwd2 = self.password_verify_input.value
+        pwd2 = self.password_input_validation.value
 
         if len(user)>0 and len(pwd)>0 and len(pwd2)>0:
             if pwd==pwd2:
-                data = {'user': user, 'password': pwd}
+                parameters = {}
-                try:
+                parameters['user'] = user
-                    async with httpx.AsyncClient() as client:
+                parameters['password'] = pwd
-                        response = await client.post(API+'/register', data=data)
+                await self.app.backend.post('register', parameters, self.after_backend_registration)
-                    payload = response.json()
-                    print(payload)
-                    self.result = int(payload['status'])
-                    if 'message' in payload:
-                        self.message = payload['message']
-                except httpx.RequestError as exc:
-                    self.result = -2
-
-                if self.result == 1:
-                    # store login etc in config
-                    self.app.configuration.store_login(user, pwd)
-                    # goto lists screen
-                    self.app.goto_next_page_by_name(PAGE_LOGIN)
             else:
                 await self.app.main_window.dialog(
-                        toga.InfoDialog("Registration error", self.message)            
+                    toga.InfoDialog("Error", "Passwords do not match.")            
                 )
 
-            else:
+    def after_backend_registration(self, parameters, return_data):
-                await self.app.main_window.dialog(
+        if int(return_data['status']) > 0:
-                    toga.InfoDialog("Error", "Passwords do not match")            
+            print("registraiton ok")
-                )
+            # self.display_warning("Registration Ok. Awaiting Approval")
-    def goto_login(self, dummy):
             self.app.goto_next_page_by_name(PAGE_LOGIN)