added van api and front end

python/van_inventory/routers/frontend.py

@@ -0,0 +1,188 @@
+"""HTMX frontend routes for van inventory."""
+
+from __future__ import annotations
+
+from pathlib import Path
+from typing import TYPE_CHECKING, Annotated
+
+from fastapi import APIRouter, Form, Request
+from fastapi.responses import HTMLResponse
+from fastapi.templating import Jinja2Templates
+from sqlalchemy import select
+from sqlalchemy.orm import selectinload
+
+from python.orm.van_inventory.models import Item, Meal, MealIngredient
+from python.van_inventory.routers.api import _check_meal
+
+if TYPE_CHECKING:
+    from python.van_inventory.dependencies import DbSession
+
+TEMPLATE_DIR = Path(__file__).resolve().parent.parent / "templates"
+templates = Jinja2Templates(directory=TEMPLATE_DIR)
+
+router = APIRouter(tags=["frontend"])
+
+
+# --- Items ---
+
+
+@router.get("/", response_class=HTMLResponse)
+def items_page(request: Request, db: DbSession) -> HTMLResponse:
+    """Render the inventory page."""
+    items = list(db.scalars(select(Item).order_by(Item.name)).all())
+    return templates.TemplateResponse(request, "items.html", {"items": items})
+
+
+@router.post("/items", response_class=HTMLResponse)
+def htmx_create_item(
+    request: Request,
+    db: DbSession,
+    name: Annotated[str, Form()],
+    quantity: Annotated[float, Form()] = 0,
+    unit: Annotated[str, Form()] = "",
+    category: Annotated[str | None, Form()] = None,
+) -> HTMLResponse:
+    """Create an item and return updated item rows."""
+    db.add(Item(name=name, quantity=quantity, unit=unit, category=category or None))
+    db.commit()
+    items = list(db.scalars(select(Item).order_by(Item.name)).all())
+    return templates.TemplateResponse(request, "partials/item_rows.html", {"items": items})
+
+
+@router.patch("/items/{item_id}", response_class=HTMLResponse)
+def htmx_update_item(
+    request: Request,
+    item_id: int,
+    db: DbSession,
+    quantity: Annotated[float, Form()],
+) -> HTMLResponse:
+    """Update an item's quantity and return updated item rows."""
+    item = db.get(Item, item_id)
+    if item:
+        item.quantity = quantity
+        db.commit()
+    items = list(db.scalars(select(Item).order_by(Item.name)).all())
+    return templates.TemplateResponse(request, "partials/item_rows.html", {"items": items})
+
+
+@router.delete("/items/{item_id}", response_class=HTMLResponse)
+def htmx_delete_item(request: Request, item_id: int, db: DbSession) -> HTMLResponse:
+    """Delete an item and return updated item rows."""
+    item = db.get(Item, item_id)
+    if item:
+        db.delete(item)
+        db.commit()
+    items = list(db.scalars(select(Item).order_by(Item.name)).all())
+    return templates.TemplateResponse(request, "partials/item_rows.html", {"items": items})
+
+
+# --- Meals ---
+
+
+def _load_meals(db: DbSession) -> list[Meal]:
+    return list(
+        db.scalars(
+            select(Meal)
+            .options(selectinload(Meal.ingredients).selectinload(MealIngredient.item))
+            .order_by(Meal.name)
+        ).all()
+    )
+
+
+@router.get("/meals", response_class=HTMLResponse)
+def meals_page(request: Request, db: DbSession) -> HTMLResponse:
+    """Render the meals page."""
+    meals = _load_meals(db)
+    return templates.TemplateResponse(request, "meals.html", {"meals": meals})
+
+
+@router.post("/meals", response_class=HTMLResponse)
+def htmx_create_meal(
+    request: Request,
+    db: DbSession,
+    name: Annotated[str, Form()],
+    instructions: Annotated[str | None, Form()] = None,
+) -> HTMLResponse:
+    """Create a meal and return updated meal rows."""
+    db.add(Meal(name=name, instructions=instructions or None))
+    db.commit()
+    meals = _load_meals(db)
+    return templates.TemplateResponse(request, "partials/meal_rows.html", {"meals": meals})
+
+
+@router.delete("/meals/{meal_id}", response_class=HTMLResponse)
+def htmx_delete_meal(request: Request, meal_id: int, db: DbSession) -> HTMLResponse:
+    """Delete a meal and return updated meal rows."""
+    meal = db.get(Meal, meal_id)
+    if meal:
+        db.delete(meal)
+        db.commit()
+    meals = _load_meals(db)
+    return templates.TemplateResponse(request, "partials/meal_rows.html", {"meals": meals})
+
+
+# --- Meal detail ---
+
+
+def _load_meal(db: DbSession, meal_id: int) -> Meal | None:
+    return db.scalar(
+        select(Meal)
+        .where(Meal.id == meal_id)
+        .options(selectinload(Meal.ingredients).selectinload(MealIngredient.item))
+    )
+
+
+@router.get("/meals/{meal_id}", response_class=HTMLResponse)
+def meal_detail_page(request: Request, meal_id: int, db: DbSession) -> HTMLResponse:
+    """Render the meal detail page."""
+    meal = _load_meal(db, meal_id)
+    items = list(db.scalars(select(Item).order_by(Item.name)).all())
+    return templates.TemplateResponse(request, "meal_detail.html", {"meal": meal, "items": items})
+
+
+@router.post("/meals/{meal_id}/ingredients", response_class=HTMLResponse)
+def htmx_add_ingredient(
+    request: Request,
+    meal_id: int,
+    db: DbSession,
+    item_id: Annotated[int, Form()],
+    quantity_needed: Annotated[float, Form()],
+) -> HTMLResponse:
+    """Add an ingredient to a meal and return updated ingredient rows."""
+    db.add(MealIngredient(meal_id=meal_id, item_id=item_id, quantity_needed=quantity_needed))
+    db.commit()
+    meal = _load_meal(db, meal_id)
+    return templates.TemplateResponse(request, "partials/ingredient_rows.html", {"meal": meal})
+
+
+@router.delete("/meals/{meal_id}/ingredients/{item_id}", response_class=HTMLResponse)
+def htmx_remove_ingredient(
+    request: Request,
+    meal_id: int,
+    item_id: int,
+    db: DbSession,
+) -> HTMLResponse:
+    """Remove an ingredient from a meal and return updated ingredient rows."""
+    mi = db.scalar(
+        select(MealIngredient).where(MealIngredient.meal_id == meal_id, MealIngredient.item_id == item_id)
+    )
+    if mi:
+        db.delete(mi)
+        db.commit()
+    meal = _load_meal(db, meal_id)
+    return templates.TemplateResponse(request, "partials/ingredient_rows.html", {"meal": meal})
+
+
+# --- Availability ---
+
+
+@router.get("/availability", response_class=HTMLResponse)
+def availability_page(request: Request, db: DbSession) -> HTMLResponse:
+    """Render the meal availability page."""
+    meals = list(
+        db.scalars(
+            select(Meal).options(selectinload(Meal.ingredients).selectinload(MealIngredient.item))
+        ).all()
+    )
+    availability = [_check_meal(m) for m in meals]
+    return templates.TemplateResponse(request, "availability.html", {"availability": availability})