add abandoned status to distinguish given-up habits from completed ones

Completed and abandoned habits were both lumped under a single terminal
state, making it impossible to tell "finished successfully" apart from
"gave up" when reviewing habit history.

app/routers/pages.py

@@ -118,6 +118,8 @@ def habits_page(request: Request, tab: str = "build", db: Session = Depends(get_
 
     if tab == "completed":
         habits = habit_service.list_habits(db, current.id, status=HabitStatus.COMPLETED)
+    elif tab == "abandoned":
+        habits = habit_service.list_habits(db, current.id, status=HabitStatus.ABANDONED)
     else:
         if tab not in ("build", "quit"):
             tab = "build"
@@ -139,6 +141,14 @@ def habits_page(request: Request, tab: str = "build", db: Session = Depends(get_
     )
 
 
+def _tab_for_habit(habit) -> str:
+    if habit.status == HabitStatus.COMPLETED:
+        return "completed"
+    if habit.status == HabitStatus.ABANDONED:
+        return "abandoned"
+    return habit.habit_type.value
+
+
 @router.post("/habits/new")
 def create_habit_page(
     request: Request,
@@ -208,7 +218,7 @@ def edit_habit_page(
         return HTMLResponse("입력값을 확인해주세요")
 
     habit_service.update_habit(db, habit, data)
-    tab = "completed" if habit.status == HabitStatus.COMPLETED else habit.habit_type.value
+    tab = _tab_for_habit(habit)
     response = Response(status_code=200)
     response.headers["HX-Redirect"] = f"/habits?tab={tab}"
     return response
@@ -230,6 +240,22 @@ def complete_habit_page(request: Request, habit_id: int, db: Session = Depends(g
     return response
 
 
+@router.post("/habits/{habit_id}/abandon")
+def abandon_habit_page(request: Request, habit_id: int, db: Session = Depends(get_db)):
+    current = _current_user_or_redirect(request, db)
+    if isinstance(current, RedirectResponse):
+        return current
+
+    habit = habit_service.get_habit(db, habit_id, current.id)
+    if habit is None:
+        return Response(status_code=404)
+    tab = habit.habit_type.value
+    habit_service.abandon_habit(db, habit)
+    response = Response(status_code=200)
+    response.headers["HX-Redirect"] = f"/habits?tab={tab}"
+    return response
+
+
 @router.post("/habits/{habit_id}/reactivate")
 def reactivate_habit_page(request: Request, habit_id: int, db: Session = Depends(get_db)):
     current = _current_user_or_redirect(request, db)
@@ -239,9 +265,10 @@ def reactivate_habit_page(request: Request, habit_id: int, db: Session = Depends
     habit = habit_service.get_habit(db, habit_id, current.id)
     if habit is None:
         return Response(status_code=404)
+    tab = _tab_for_habit(habit)
     habit_service.reactivate_habit(db, habit)
     response = Response(status_code=200)
-    response.headers["HX-Redirect"] = "/habits?tab=completed"
+    response.headers["HX-Redirect"] = f"/habits?tab={tab}"
     return response
 
 
@@ -254,7 +281,7 @@ def delete_habit_page(request: Request, habit_id: int, db: Session = Depends(get
     habit = habit_service.get_habit(db, habit_id, current.id)
     if habit is None:
         return Response(status_code=404)
-    tab = "completed" if habit.status == HabitStatus.COMPLETED else habit.habit_type.value
+    tab = _tab_for_habit(habit)
     habit_service.delete_habit(db, habit)
     response = Response(status_code=200)
     response.headers["HX-Redirect"] = f"/habits?tab={tab}"