All files / munch-ease-frontend/src/domain decoders.ts

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import type { RecipeOut, Recipe, MealOut, Meal, MealRecipe, Ingredient as DomainIngredient, ShoppingList, ShoppingListItem, ShoppingListItemWithRefs, MealInput } from './types'
import type { components } from '@/api/types'
 
export function toDate(value: string | Date | null | undefined): Date | null {
  if (value === null || value === undefined) return null
  return typeof value === 'string' ? new Date(value) : value
}
 
// Small helper to decode optional lookup maps without repeating loops everywhere
export function decodeLookup<TIn, TOut>(
  raw: Record<string, TIn> | null | undefined,
  decode: (v: TIn) => TOut
): Record<string, TOut> | undefined {
  if (!raw) return undefined
  const out: Record<string, TOut> = {}
  for (const key of Object.keys(raw)) {
    if (!Object.prototype.hasOwnProperty.call(raw, key)) continue
    const maybe = raw[key]
    if (maybe === undefined) continue
    const decoded = decode(maybe)
    out[String(key)] = decoded
  }
  return out
}
 
export function decodeRecipe(r: RecipeOut | null | undefined): Recipe {
  if (!r) throw new Error('Invalid recipe payload')
  return {
    ...r,
    dateCreated: toDate(r.dateCreated),
    dateHidden: toDate(r.dateHidden),
  }
}
 
export function decodeMeal(m: MealOut | null | undefined): Meal {
  if (!m) throw new Error('Invalid meal payload')
  const recipes = Array.isArray(m.recipes)
    ? m.recipes.map((mr) => decodeMealRecipe(mr))
    : []
  
  return {
    ...m,
    suggestedDate: toDate(m.suggestedDate),
    purchaseDate: toDate(m.purchaseDate),
    consumedDate: toDate(m.consumedDate),
    recipes,
    chefs: m.chefs ?? [],
    consumers: m.consumers ?? [],
    cleanup: m.cleanup ?? [],
    extraIngredients: m.extraIngredients ?? [],
  }
}
 
function decodeMealRecipe(mr: components['schemas']['MealRecipe-Output'] | null | undefined): MealRecipe {
  if (!mr) throw new Error('Invalid meal recipe payload')
  return {
    ...mr,
    recipe: mr.recipe ? decodeRecipe(mr.recipe) : null,
  }
}
 
export function decodeIngredient(i: components['schemas']['Ingredient'] | null | undefined): DomainIngredient {
  if (!i) throw new Error('Invalid ingredient payload')
  // API guarantees quantity is a number; pass through
  return { ...i }
}
 
export function decodeIngredients(list: components['schemas']['Ingredient'][] | null | undefined): DomainIngredient[] {
  if (!Array.isArray(list)) return []
  return list.map((i) => decodeIngredient(i))
}
 
function decodeShoppingListItem(i: components['schemas']['ShoppingListItem'] | null | undefined): ShoppingListItem {
  if (!i) throw new Error('Invalid shopping list item payload')
  return {
    ...i,
    createdDate: toDate(i.createdDate),
  }
}
 
export function decodeShoppingListItems(list: components['schemas']['ShoppingListItem'][] | null | undefined): ShoppingListItemWithRefs[] {
  if (!Array.isArray(list)) return []
  // Build a new array with item clones to allow optional refs to be attached later
  return list.map((raw) => ({ ...decodeShoppingListItem(raw) }))
}
 
export function decodeShoppingList(v: components['schemas']['ShoppingList'] | null | undefined): ShoppingList {
  if (!v) throw new Error('Invalid shopping list payload')
  const { items: rawItems, ...rest } = v
  const items = Array.isArray(rawItems) ? decodeShoppingListItems(rawItems) : undefined
  return {
    ...rest,
    createdDate: toDate(v.createdDate),
    ...(items ? { items } : {}),
  }
}
 
// Helper to convert domain Meal to MealInput, keeping Date→string conversion in boundary
export function toMealInput(meal: Meal): MealInput {
  return {
    id: meal.id,
    suggestedDate: meal.suggestedDate ? meal.suggestedDate.toISOString() : new Date().toISOString(),
    consumedDate: meal.consumedDate ? meal.consumedDate.toISOString() : null,
    purchaseDate: meal.purchaseDate ? meal.purchaseDate.toISOString() : null,
    chefs: meal.chefs,
    cleanup: meal.cleanup,
    consumers: meal.consumers,
    recipes: meal.recipes.map((r) => ({
      mealId: r.mealId,
      recipeId: r.recipeId,
      servings: r.servings,
      recipe: null,
    })),
    extraIngredients: meal.extraIngredients,
  }
}