package handlers

import (
	"html/template"
	"mealprep/auth"
	"mealprep/database"
	"net/http"
)

// GroceryListHandler handles the grocery list page
func GroceryListHandler(w http.ResponseWriter, r *http.Request) {
	userID := auth.GetUserID(r)
	groceryItems, err := database.GetGroceryList(userID)
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}

	tmpl := `
		<div id="grocery-content">
			<h2>Grocery List</h2>
			<p class="info">This list is automatically generated from your week plan.</p>

			{{if .Items}}
			<div class="grocery-list">
				{{range .Items}}
				<div class="grocery-item">
					<span class="grocery-name">{{.IngredientName}}</span>
					<span class="grocery-quantity">{{printf "%.2f" .TotalQuantity}} {{.Unit}}</span>
				</div>
				{{end}}
			</div>
			{{else}}
			<p class="empty-state">No items in your grocery list. Add meals to your week plan to generate a grocery list.</p>
			{{end}}
		</div>
	`

	data := struct {
		Items interface{}
	}{
		Items: groceryItems,
	}

	t := template.Must(template.New("grocerylist").Parse(tmpl))
	t.Execute(w, data)
}