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feat(planning): add GET /v1/week-plans/{planId}/variety-preview endpoint

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Returns currentScore, projectedScore, and scoreDelta when a recipe
would be added on a given date. Used by C6 desktop day picker.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Marcel Raddatz
2026-04-08 22:36:03 +02:00
parent a52b0a9d24
commit 7175b56833
5 changed files with 170 additions and 0 deletions
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58
backend/src/test/java/com/recipeapp/planning/PlanningServiceTest.java
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@@ -443,4 +443,62 @@ class PlanningServiceTest {
assertThatThrownBy(() -> planningService.createWeekPlan(HOUSEHOLD_ID, WEEK_START))
.isInstanceOf(ResourceNotFoundException.class);
}
// ── Variety preview ──
@Test
void getVarietyPreviewShouldReturnScoreDelta() {
var household = testHousehold();
var plan = testWeekPlan(household);
var planId = plan.getId();
// Plan already has one slot (Mon)
var existingRecipe = testRecipe(household, "Spaghetti");
var slot = new WeekPlanSlot(plan, existingRecipe, WEEK_START);
setId(slot, WeekPlanSlot.class, UUID.randomUUID());
plan.getSlots().add(slot);
var candidate = testRecipe(household, "Lachsfilet");
var candidateId = candidate.getId();
when(weekPlanRepository.findById(planId)).thenReturn(Optional.of(plan));
when(recipeRepository.findByIdAndHouseholdIdAndDeletedAtIsNull(candidateId, HOUSEHOLD_ID))
.thenReturn(Optional.of(candidate));
when(varietyScoreConfigRepository.findByHouseholdId(HOUSEHOLD_ID))
.thenReturn(Optional.empty());
when(cookingLogRepository.findByHouseholdIdAndCookedOnAfter(eq(HOUSEHOLD_ID), any()))
.thenReturn(List.of());
var result = planningService.getVarietyPreview(HOUSEHOLD_ID, planId, candidateId, WEEK_START.plusDays(1));
// With no penalties, projected score should be 10.0; current (1 slot, no conflicts) is also 10.0
assertThat(result.projectedScore()).isBetween(0.0, 10.0);
assertThat(result.scoreDelta()).isEqualTo(result.projectedScore() - result.currentScore());
assertThat(result.currentScore()).isBetween(0.0, 10.0);
}
@Test
void getVarietyPreviewShouldThrowWhenPlanNotFound() {
var planId = UUID.randomUUID();
when(weekPlanRepository.findById(planId)).thenReturn(Optional.empty());
assertThatThrownBy(() -> planningService.getVarietyPreview(
HOUSEHOLD_ID, planId, UUID.randomUUID(), WEEK_START))
.isInstanceOf(ResourceNotFoundException.class);
}
@Test
void getVarietyPreviewShouldThrowWhenRecipeNotFound() {
var household = testHousehold();
var plan = testWeekPlan(household);
var recipeId = UUID.randomUUID();
when(weekPlanRepository.findById(plan.getId())).thenReturn(Optional.of(plan));
when(recipeRepository.findByIdAndHouseholdIdAndDeletedAtIsNull(recipeId, HOUSEHOLD_ID))
.thenReturn(Optional.empty());
assertThatThrownBy(() -> planningService.getVarietyPreview(
HOUSEHOLD_ID, plan.getId(), recipeId, WEEK_START))
.isInstanceOf(ResourceNotFoundException.class);
}
}