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Arnaud cd444d4d23 feat: surface pantry-expiry recipe suggestions
Pantry page now shows a "Use it up soon" widget with recipes that use
soon-to-expire pantry items, across the user's own recipes plus public/
unlisted ones (the existing /recipes/can-cook page only looked at the
user's own). Extracted the matching/scoring logic shared by both into
lib/pantry-match.ts.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-09 15:26:44 +02:00

41 lines
1.5 KiB
TypeScript

export const EXPIRING_WITHIN_DAYS = 3;
export function isExpiringSoon(expiresAt: Date | null): boolean {
if (!expiresAt) return false;
const days = Math.ceil((expiresAt.getTime() - Date.now()) / (1000 * 60 * 60 * 24));
return days >= 0 && days <= EXPIRING_WITHIN_DAYS;
}
type ScorableRecipe<T> = T & { ingredients: { rawName: string }[] };
export function scoreRecipesAgainstPantry<T>(
recipesList: ScorableRecipe<T>[],
pantry: { rawName: string; expiresAt: Date | null }[]
) {
const pantryKeys = new Set(pantry.map((p) => p.rawName.toLowerCase()));
const expiringSoonKeys = new Set(
pantry.filter((p) => isExpiringSoon(p.expiresAt)).map((p) => p.rawName.toLowerCase())
);
return recipesList
.filter((r) => r.ingredients.length > 0)
.map((recipe) => {
const matched = recipe.ingredients.filter((ing) => pantryKeys.has(ing.rawName.toLowerCase())).length;
const missing = recipe.ingredients
.filter((ing) => !pantryKeys.has(ing.rawName.toLowerCase()))
.map((ing) => ing.rawName)
.slice(0, 5);
const usesExpiring = recipe.ingredients
.filter((ing) => expiringSoonKeys.has(ing.rawName.toLowerCase()))
.map((ing) => ing.rawName);
const total = recipe.ingredients.length;
return { recipe, matched, total, pct: Math.round((matched / total) * 100), missing, usesExpiring };
})
.sort((a, b) => {
if (a.usesExpiring.length > 0 !== b.usesExpiring.length > 0) {
return a.usesExpiring.length > 0 ? -1 : 1;
}
return b.pct - a.pct;
});
}