141 lines
4.3 KiB
TypeScript
141 lines
4.3 KiB
TypeScript
import { useParams } from "react-router-dom"
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import type { Recipe } from "../../types/recipe"
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import { useEffect, useState } from "react"
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import { fetchRecipe } from "../../api/points/RecipePoint"
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import { getRecipeEditUrl, getRecipeListUrl } from "../../routes"
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import ButtonLink from "../basics/ButtonLink"
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/**
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* Displays the full detail of a single recipe,
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* including its ingredients, instructions, and image.
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*/
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export default function RecipeDetailPage() {
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// Extract recipe ID from route params
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const { id } = useParams<{ id: string }>()
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// the recipe loaded from the backend, don't change this! it's required for scaling
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const [recipe, setRecipe] = useState<Recipe | null>(null)
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// Working copy for re-calculating ingredients
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const [recipeWorkingCopy, setRecipeWorkingCopy] = useState<Recipe|null>(null)
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// load recipe data whenever id changes
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useEffect(() => {
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const loadRecipe = async () => {
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if (id) {
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try {
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// Fetch recipe data when editing an existing one
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console.log("loading recipe with id", id)
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const data = await fetchRecipe(id)
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setRecipe(data)
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} catch (err) {
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console.error(err)
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}
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}
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}
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loadRecipe()
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}, [id])
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// set original recipe data and working copy when recipe changes
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useEffect( ()=> {
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setRecipeWorkingCopy(recipe);
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}, [recipe])
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if (!recipe || !recipeWorkingCopy) {
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return <p className="p-6">Recipe not found.</p>
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}
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/** recalculate ingredients based on the amount of servings */
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const recalculateIngredients = (newAmount: number) => {
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// Always calculate factor from the *original recipe*, not the working copy
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const factor = newAmount / recipe.servings.amount
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// Create a new ingredient list with updated amounts
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const updatedIngredientGroupList = recipe.ingredientGroupList.map((ingGrp) => ({
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...ingGrp,
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ingredientList: ingGrp.ingredientList.map((ing) => ({
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...ing,
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amount: ing.amount * factor,
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}))
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}))
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// Update working copy with new servings + recalculated ingredients
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setRecipeWorkingCopy({
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...recipeWorkingCopy,
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servings: {
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...recipeWorkingCopy.servings,
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amount: newAmount,
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},
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ingredientGroupList: updatedIngredientGroupList,
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})
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}
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return (
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<div className="p-6 max-w-2xl mx-auto">
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<h1 className="content-title">{recipeWorkingCopy.title}</h1>
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{/* Recipe image */}
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{recipe.imageUrl && (
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<img
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src={recipe.imageUrl}
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alt={recipe.title}
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className="w-full rounded-xl mb-4 border"
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/>
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)}
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{/* Servings */}
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<div className="flex flex-row items-center gap-2 bg-blue-100 columns-2 rounded p-2 mb-4">
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<p className="mb-2">For {recipeWorkingCopy.servings.amount} {recipeWorkingCopy.servings.unit}</p>
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<input
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type="number"
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className="input-field w-20 ml-auto"
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value={recipeWorkingCopy.servings.amount}
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onChange={
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e => {
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recalculateIngredients(Number(e.target.value))
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}
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}
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/>
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</div>
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{/* Ingredients */}
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<h2 className="section-heading">Zutaten</h2>
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<ul>
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{recipeWorkingCopy.ingredientGroupList.map((group,i) => (
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<div key={i}>
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{/* the title is optional, only print if present */}
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{group.title && group.title.trim() !== "" && (
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<h3 className="subsection-heading">{group.title}</h3>
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)}
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<ul className="default-list">
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{group.ingredientList.map((ing, j) => (
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<li key={j}>
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{ing.amount} {ing.unit ?? ""} {ing.name}
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</li>
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))}
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</ul>
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</div>
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))}
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</ul>
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{/* Instructions */}
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<h2 className="section-heading">Zubereitung</h2>
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<p className="mb-6">{recipe.instructions}</p>
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{/* Action buttons */}
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<div className="button-group">
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<ButtonLink
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to={getRecipeEditUrl(recipe.id)}
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className="basic-button primary-button-bg primary-button-text"
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text="Bearbeiten"
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/>
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<ButtonLink
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to={getRecipeListUrl()}
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className="basic-button default-button-bg default-button-text"
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text="Zurueck"
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/>
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</div>
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</div>
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)
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}
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