adv_app_strip.py

Author: jph00

examples/adv_app_strip.py

@@ -0,0 +1,103 @@
+from fasthtml.common import *
+from hmac import compare_digest
+
+db = database('data/utodos.db')
+class User: name:str; pwd:str
+class Todo: id:int; title:str; done:bool; name:str; details:str; priority:int
+users = db.create(User, pk='name')
+todos = db.create(Todo, transform=True)
+
+login_redir = RedirectResponse('/login', status_code=303)
+
+def before(req, sess):
+    auth = req.scope['auth'] = sess.get('auth', None)
+    if not auth: return login_redir
+    todos.xtra(name=auth)
+
+bware = Beforeware(before, skip=[r'/favicon\.ico', r'/static/.*', r'.*\.css', '/login', '/send_login'])
+
+def _not_found(req, exc): return Titled('Oh no!', Div('We could not find that page :('))
+app,rt = fast_app(before=bware, exception_handlers={404: _not_found},
+                  hdrs=(SortableJS('.sortable'), MarkdownJS()))
+
+@rt
+def login():
+    frm = Form(action=send_login, method='post')(
+        Input(id='name', placeholder='Name'),
+        Input(id='pwd', type='password', placeholder='Password'),
+        Button('login'))
+    return Titled("Login", frm)
+
+@rt
+def send_login(name:str, pwd:str, sess):
+    if not name or not pwd: return login_redir
+    try: u = users[name]
+    except NotFoundError: u = users.insert(name=name, pwd=pwd)
+    if not compare_digest(u.pwd.encode("utf-8"), pwd.encode("utf-8")): return login_redir
+    sess['auth'] = u.name
+    return RedirectResponse('/', status_code=303)
+
+@rt
+def logout(sess):
+    del sess['auth']
+    return login_redir
+
+def clr_details(): return Div(hx_swap_oob='innerHTML', id='current-todo')
+
+@rt
+def update(todo: Todo): return todos.update(todo), clr_details()
+
+@rt
+def edit(id:int):
+    res = Form(hx_post=update, target_id=f'todo-{id}', id="edit")(
+        Group(Input(id="title"), Button("Save")),
+        Hidden(id="id"), CheckboxX(id="done", label='Done'),
+        Textarea(id="details", name="details", rows=10))
+    return fill_form(res, todos[id])
+
+@rt
+def rm(id:int):
+    todos.delete(id)
+    return clr_details()
+
+@rt
+def show(id:int):
+    todo = todos[id]
+    btn = Button('delete', hx_post=rm.to(id=todo.id),
+                 hx_target=f'#todo-{todo.id}', hx_swap="outerHTML")
+    return Div(H2(todo.title), Div(todo.details, cls="marked"), btn)
+
+@patch
+def __ft__(self:Todo):
+    ashow = AX(self.title, show.to(id=self.id), 'current-todo')
+    aedit = AX('edit',     edit.to(id=self.id), 'current-todo')
+    dt = '✅ ' if self.done else ''
+    cts = (dt, ashow, ' | ', aedit, Hidden(id="id", value=self.id), Hidden(id="priority", value="0"))
+    return Li(*cts, id=f'todo-{self.id}')
+
+@rt
+def create(todo:Todo):
+    new_inp =  Input(id="new-title", name="title", placeholder="New Todo", hx_swap_oob='true')
+    return todos.insert(todo), new_inp
+
+@rt
+def reorder(id:list[int]):
+    for i,id_ in enumerate(id): todos.update({'priority':i}, id_)
+    return tuple(todos(order_by='priority'))
+
+@rt
+def index(auth):
+    title = f"{auth}'s Todo list"
+    top = Grid(H1(title), Div(A('logout', href=logout), style='text-align: right'))
+    new_inp = Input(id="new-title", name="title", placeholder="New Todo")
+    add = Form(Group(new_inp, Button("Add")),
+               hx_post=create, target_id='todo-list', hx_swap="afterbegin")
+    frm = Form(*todos(order_by='priority'),
+               id='todo-list', cls='sortable', hx_post=reorder, hx_trigger="end")
+    card = Card(P('Drag/drop todos to reorder them'),
+                Ul(frm),
+                header=add, footer=Div(id='current-todo'))
+    return Title(title), Container(top, card)
+
+serve()
+