Add plantings backend: plop CRUD, derived counts, removed_at (#14)

- domain: Planting gains a computed (non-persisted) DerivedCount field.
- store/plantings.go: Get/Create/Update (version-guarded)/Delete alongside the
  existing /full read helper.
- service/plantings.go: place/move/resize/soft-remove a plop; editor role on the
  object's garden; object must be plantable; plant_id must be visible to the
  actor (built-in or own) else ErrInvalidInput; center must sit within the
  object's unrotated local bounds (radius may overhang); planted_at defaults to
  today. derivedCount = max(1, round(π·r²/spacing²)) — one unit-tested helper,
  reused by /full (via a spacing map, no N+1) and single responses.
- api: POST /objects/:id/plantings, PATCH/DELETE /plantings/:id; nullable
  count/label/plantedAt/removedAt use RawMessage so null (clear) is distinct
  from absent (unchanged). removedAt is the soft-remove / "clear bed" seam.
- /full now enriches each active plop with its derivedCount.

Service tests: formula edge cases (tiny radius → 1), defaults + derived, count
override, move/resize + clear override, non-plantable rejection, foreign/unknown
plant rejection, bounds, soft-remove leaves /full, version conflict, cross-user
masking, delete. Plus an API-level create/patch/full/delete flow.

GOWORK=off go build/vet/test ./internal/... green.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01JdQpdYYsTgtkJBxbcpAszi

internal/service/objects.go

@@ -176,6 +176,15 @@ func (s *Service) GardenFull(ctx context.Context, actorID, gardenID int64) (*Ful
 	if err != nil {
 		return nil, err
 	}
+	// Fill each plop's DerivedCount from its plant's spacing (referenced plants
+	// are already loaded, so this is a map lookup rather than N queries).
+	spacing := make(map[int64]float64, len(plants))
+	for _, pl := range plants {
+		spacing[pl.ID] = pl.SpacingCM
+	}
+	for i := range plantings {
+		plantings[i].DerivedCount = derivedCount(plantings[i].RadiusCM, spacing[plantings[i].PlantID])
+	}
 	return &FullGarden{Garden: g, Objects: objects, Plantings: plantings, Plants: plants}, nil
 }
 

internal/service/plantings.go

@@ -0,0 +1,251 @@
+package service
+
+import (
+	"context"
+	"errors"
+	"math"
+	"strings"
+	"time"
+
+	"gitea.stevedudenhoeffer.com/steve/pansy/internal/domain"
+)
+
+// dateLayout is the 'YYYY-MM-DD' format plantings store planted_at/removed_at in.
+const dateLayout = "2006-01-02"
+
+const (
+	maxPlantingLabelLen = 200
+	maxRadiusCM         = 10_000    // 100 m — a generous plop ceiling
+	maxExplicitCount    = 1_000_000 // sanity cap on a manual count override
+)
+
+// derivedCount is the plant count implied by a plop's area and the plant's
+// mature spacing: max(1, round(π·r² / spacing²)). It is the single source of the
+// formula (also feeds #15's display and #19's FillRegion). A non-positive radius
+// or spacing collapses to the floor of 1.
+func derivedCount(radiusCM, spacingCM float64) int {
+	if radiusCM <= 0 || spacingCM <= 0 || math.IsNaN(radiusCM) || math.IsNaN(spacingCM) {
+		return 1
+	}
+	area := math.Pi * radiusCM * radiusCM
+	n := int(math.Round(area / (spacingCM * spacingCM)))
+	if n < 1 {
+		return 1
+	}
+	return n
+}
+
+// PlantingInput is the payload for placing a plop. Count nil = derived; PlantedAt
+// nil defaults to today.
+type PlantingInput struct {
+	PlantID   int64
+	XCM       float64
+	YCM       float64
+	RadiusCM  float64
+	Count     *int
+	Label     *string
+	PlantedAt *string
+}
+
+// PlantingPatch is a partial update. The nullable fields (Count/Label/PlantedAt/
+// RemovedAt) use a Set* flag to tell "clear to NULL" from "leave unchanged".
+// Setting RemovedAt is how "clear bed"/soft-remove works; clearing it un-removes.
+type PlantingPatch struct {
+	PlantID      *int64
+	XCM          *float64
+	YCM          *float64
+	RadiusCM     *float64
+	SetCount     bool
+	Count        *int
+	SetLabel     bool
+	Label        *string
+	SetPlantedAt bool
+	PlantedAt    *string
+	SetRemovedAt bool
+	RemovedAt    *string
+}
+
+// CreatePlanting places a plop in a plantable object the actor can edit.
+func (s *Service) CreatePlanting(ctx context.Context, actorID, objectID int64, in PlantingInput) (*domain.Planting, error) {
+	o, _, err := s.objectForRole(ctx, actorID, objectID, roleEditor)
+	if err != nil {
+		return nil, err
+	}
+	if !o.Plantable {
+		return nil, domain.ErrInvalidInput // trees/paths/structures can't hold plants
+	}
+	plant, err := s.visiblePlant(ctx, actorID, in.PlantID)
+	if err != nil {
+		return nil, err
+	}
+
+	p := &domain.Planting{
+		ObjectID:  objectID,
+		PlantID:   in.PlantID,
+		XCM:       in.XCM,
+		YCM:       in.YCM,
+		RadiusCM:  in.RadiusCM,
+		Count:     in.Count,
+		Label:     trimStringPtr(in.Label),
+		PlantedAt: in.PlantedAt,
+	}
+	if p.PlantedAt == nil {
+		today := s.now().UTC().Format(dateLayout)
+		p.PlantedAt = &today
+	}
+	if err := finalizePlanting(p, o); err != nil {
+		return nil, err
+	}
+	created, err := s.store.CreatePlanting(ctx, p)
+	if err != nil {
+		return nil, err
+	}
+	created.DerivedCount = derivedCount(created.RadiusCM, plant.SpacingCM)
+	return created, nil
+}
+
+// UpdatePlanting applies a partial, version-guarded patch to a plop in an object
+// the actor can edit. On a version mismatch it returns (current, ErrVersionConflict).
+func (s *Service) UpdatePlanting(ctx context.Context, actorID, plantingID int64, patch PlantingPatch, version int64) (*domain.Planting, error) {
+	pl, err := s.store.GetPlanting(ctx, plantingID)
+	if err != nil {
+		return nil, err // ErrNotFound
+	}
+	o, _, err := s.objectForRole(ctx, actorID, pl.ObjectID, roleEditor)
+	if err != nil {
+		return nil, err
+	}
+
+	applyPlantingPatch(pl, patch)
+	// The plant may have changed; the (possibly new) plant must be visible.
+	plant, err := s.visiblePlant(ctx, actorID, pl.PlantID)
+	if err != nil {
+		return nil, err
+	}
+	if err := finalizePlanting(pl, o); err != nil {
+		return nil, err
+	}
+	pl.Version = version
+
+	updated, err := s.store.UpdatePlanting(ctx, pl)
+	if err != nil {
+		if errors.Is(err, domain.ErrVersionConflict) && updated != nil {
+			// Enrich the current row with its own plant's derived count.
+			s.enrichDerived(ctx, updated)
+		}
+		return updated, err
+	}
+	updated.DerivedCount = derivedCount(updated.RadiusCM, plant.SpacingCM)
+	return updated, nil
+}
+
+// DeletePlanting hard-deletes a plop in an object the actor can edit. (Soft
+// removal — "clear bed" / harvested — sets removed_at via UpdatePlanting.)
+func (s *Service) DeletePlanting(ctx context.Context, actorID, plantingID int64) error {
+	pl, err := s.store.GetPlanting(ctx, plantingID)
+	if err != nil {
+		return err
+	}
+	if _, _, err := s.objectForRole(ctx, actorID, pl.ObjectID, roleEditor); err != nil {
+		return err
+	}
+	return s.store.DeletePlanting(ctx, plantingID)
+}
+
+// visiblePlant loads a plant the actor may reference in a planting: a built-in or
+// one the actor owns. An unknown plant or another user's plant is an invalid
+// reference (ErrInvalidInput) rather than leaking existence.
+func (s *Service) visiblePlant(ctx context.Context, actorID, plantID int64) (*domain.Plant, error) {
+	p, err := s.store.GetPlant(ctx, plantID)
+	if errors.Is(err, domain.ErrNotFound) {
+		return nil, domain.ErrInvalidInput
+	}
+	if err != nil {
+		return nil, err
+	}
+	if p.OwnerID != nil && *p.OwnerID != actorID {
+		return nil, domain.ErrInvalidInput
+	}
+	return p, nil
+}
+
+// enrichDerived best-effort sets p.DerivedCount from its plant's spacing (used
+// when we don't already hold the plant, e.g. a conflict's current row).
+func (s *Service) enrichDerived(ctx context.Context, p *domain.Planting) {
+	plant, err := s.store.GetPlant(ctx, p.PlantID)
+	if err == nil {
+		p.DerivedCount = derivedCount(p.RadiusCM, plant.SpacingCM)
+	}
+}
+
+// applyPlantingPatch mutates pl with each provided patch field.
+func applyPlantingPatch(pl *domain.Planting, p PlantingPatch) {
+	if p.PlantID != nil {
+		pl.PlantID = *p.PlantID
+	}
+	if p.XCM != nil {
+		pl.XCM = *p.XCM
+	}
+	if p.YCM != nil {
+		pl.YCM = *p.YCM
+	}
+	if p.RadiusCM != nil {
+		pl.RadiusCM = *p.RadiusCM
+	}
+	if p.SetCount {
+		pl.Count = p.Count
+	}
+	if p.SetLabel {
+		pl.Label = trimStringPtr(p.Label)
+	}
+	if p.SetPlantedAt {
+		pl.PlantedAt = p.PlantedAt
+	}
+	if p.SetRemovedAt {
+		pl.RemovedAt = p.RemovedAt
+	}
+}
+
+// finalizePlanting validates a built/merged plop against its parent object.
+// Shared by create and update so both enforce the same invariants.
+func finalizePlanting(p *domain.Planting, o *domain.GardenObject) error {
+	if !isFinite(p.RadiusCM) || p.RadiusCM <= 0 || p.RadiusCM > maxRadiusCM {
+		return domain.ErrInvalidInput
+	}
+	if !isFinite(p.XCM) || !isFinite(p.YCM) {
+		return domain.ErrInvalidInput
+	}
+	// Loose bounds: the plop's CENTER must sit within the object's unrotated
+	// local bounds (origin at object center); the radius may overhang.
+	if math.Abs(p.XCM) > o.WidthCM/2 || math.Abs(p.YCM) > o.HeightCM/2 {
+		return domain.ErrInvalidInput
+	}
+	if p.Count != nil && (*p.Count < 1 || *p.Count > maxExplicitCount) {
+		return domain.ErrInvalidInput
+	}
+	if p.Label != nil && len(*p.Label) > maxPlantingLabelLen {
+		return domain.ErrInvalidInput
+	}
+	if !validDatePtr(p.PlantedAt) || !validDatePtr(p.RemovedAt) {
+		return domain.ErrInvalidInput
+	}
+	return nil
+}
+
+// validDatePtr reports whether a nil-or-'YYYY-MM-DD' date pointer is acceptable.
+func validDatePtr(s *string) bool {
+	if s == nil {
+		return true
+	}
+	_, err := time.Parse(dateLayout, *s)
+	return err == nil
+}
+
+// trimStringPtr trims a *string, preserving nil (distinct from empty).
+func trimStringPtr(s *string) *string {
+	if s == nil {
+		return nil
+	}
+	t := strings.TrimSpace(*s)
+	return &t
+}

internal/service/plantings_test.go

@@ -0,0 +1,314 @@
+package service
+
+import (
+	"context"
+	"errors"
+	"testing"
+
+	"gitea.stevedudenhoeffer.com/steve/pansy/internal/domain"
+)
+
+// seedBed creates a plantable 200×200 bed centered in a 1000×1000 garden.
+func seedBed(t *testing.T, s *Service, owner, gardenID int64) *domain.GardenObject {
+	t.Helper()
+	o, err := s.CreateObject(context.Background(), owner, gardenID, ObjectInput{
+		Kind: domain.KindBed, XCM: 500, YCM: 500, WidthCM: 200, HeightCM: 200,
+	})
+	if err != nil {
+		t.Fatalf("seed bed: %v", err)
+	}
+	return o
+}
+
+// seedOwnPlant creates a custom plant owned by owner with the given spacing.
+func seedOwnPlant(t *testing.T, s *Service, owner int64, spacingCM float64) *domain.Plant {
+	t.Helper()
+	p, err := s.CreatePlant(context.Background(), owner, PlantInput{
+		Name: "Testroot", Category: domain.CategoryHerb, SpacingCM: spacingCM, Color: "#4a7c3f", Icon: "🌿",
+	})
+	if err != nil {
+		t.Fatalf("seed plant: %v", err)
+	}
+	return p
+}
+
+func TestDerivedCountFormula(t *testing.T) {
+	cases := []struct {
+		r, sp float64
+		want  int
+	}{
+		{0.1, 10, 1}, // tiny radius floors to 1
+		{0, 10, 1},   // zero radius → 1
+		{10, 0, 1},   // zero spacing → 1
+		{10, 10, 3},  // π·100/100 = 3.14 → 3
+		{50, 10, 79}, // π·2500/100 = 78.5 → 79
+		{30, 15, 13}, // π·900/225 = 12.57 → 13
+	}
+	for i, c := range cases {
+		if got := derivedCount(c.r, c.sp); got != c.want {
+			t.Errorf("case %d: derivedCount(%v, %v) = %d, want %d", i, c.r, c.sp, got, c.want)
+		}
+	}
+}
+
+func TestCreatePlantingDefaultsAndDerivedCount(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	bed := seedBed(t, s, owner, g.ID)
+	plant := seedOwnPlant(t, s, owner, 10)
+
+	pl, err := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 10, YCM: -20, RadiusCM: 10,
+	})
+	if err != nil {
+		t.Fatalf("CreatePlanting: %v", err)
+	}
+	if pl.Count != nil {
+		t.Errorf("count = %v, want nil (derived)", *pl.Count)
+	}
+	if pl.DerivedCount != 3 {
+		t.Errorf("derivedCount = %d, want 3", pl.DerivedCount)
+	}
+	if pl.PlantedAt == nil {
+		t.Error("plantedAt should default to today, got nil")
+	}
+	if pl.Version != 1 || pl.ObjectID != bed.ID {
+		t.Errorf("unexpected planting: %+v", pl)
+	}
+}
+
+func TestPlantingCountOverrideWins(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	bed := seedBed(t, s, owner, g.ID)
+	plant := seedOwnPlant(t, s, owner, 10)
+
+	cnt := 12
+	pl, err := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 0, YCM: 0, RadiusCM: 50, Count: &cnt,
+	})
+	if err != nil {
+		t.Fatalf("CreatePlanting: %v", err)
+	}
+	if pl.Count == nil || *pl.Count != 12 {
+		t.Errorf("count override = %v, want 12", pl.Count)
+	}
+	// derivedCount is still computed alongside the override (79 for r=50, sp=10).
+	if pl.DerivedCount != 79 {
+		t.Errorf("derivedCount = %d, want 79", pl.DerivedCount)
+	}
+}
+
+func TestUpdatePlantingMoveResizeAndClearCount(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	bed := seedBed(t, s, owner, g.ID)
+	plant := seedOwnPlant(t, s, owner, 10)
+
+	cnt := 5
+	pl, _ := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 0, YCM: 0, RadiusCM: 10, Count: &cnt,
+	})
+
+	// Move + grow radius, and clear the count override back to derived.
+	nx, ny, nr := 30.0, -40.0, 50.0
+	updated, err := s.UpdatePlanting(context.Background(), owner, pl.ID,
+		PlantingPatch{XCM: &nx, YCM: &ny, RadiusCM: &nr, SetCount: true, Count: nil}, pl.Version)
+	if err != nil {
+		t.Fatalf("UpdatePlanting: %v", err)
+	}
+	if updated.XCM != 30 || updated.YCM != -40 || updated.RadiusCM != 50 {
+		t.Errorf("move/resize didn't apply: %+v", updated)
+	}
+	if updated.Count != nil {
+		t.Errorf("count should be cleared, got %v", *updated.Count)
+	}
+	if updated.DerivedCount != 79 { // r=50, sp=10
+		t.Errorf("derivedCount after grow = %d, want 79", updated.DerivedCount)
+	}
+	if updated.Version != pl.Version+1 {
+		t.Errorf("version = %d, want %d", updated.Version, pl.Version+1)
+	}
+}
+
+func TestPlantingNonPlantableObjectRejected(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	plant := seedOwnPlant(t, s, owner, 10)
+
+	tree, _ := s.CreateObject(context.Background(), owner, g.ID, ObjectInput{
+		Kind: domain.KindTree, XCM: 500, YCM: 500, WidthCM: 100, HeightCM: 100,
+	})
+	if _, err := s.CreatePlanting(context.Background(), owner, tree.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 0, YCM: 0, RadiusCM: 10,
+	}); !errors.Is(err, domain.ErrInvalidInput) {
+		t.Errorf("planting into a tree err = %v, want ErrInvalidInput", err)
+	}
+}
+
+func TestPlantingForeignPlantRejectedBuiltinAllowed(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	bob := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	bed := seedBed(t, s, owner, g.ID)
+
+	// Bob's custom plant is invisible to owner → invalid reference.
+	bobPlant := seedOwnPlant(t, s, bob, 10)
+	if _, err := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: bobPlant.ID, XCM: 0, YCM: 0, RadiusCM: 10,
+	}); !errors.Is(err, domain.ErrInvalidInput) {
+		t.Errorf("foreign plant err = %v, want ErrInvalidInput", err)
+	}
+	// An unknown plant id is likewise invalid.
+	if _, err := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: 999999, XCM: 0, YCM: 0, RadiusCM: 10,
+	}); !errors.Is(err, domain.ErrInvalidInput) {
+		t.Errorf("unknown plant err = %v, want ErrInvalidInput", err)
+	}
+	// A built-in plant is plantable by anyone.
+	builtins, _ := s.ListPlants(context.Background(), owner)
+	if _, err := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: builtins[0].ID, XCM: 0, YCM: 0, RadiusCM: 10,
+	}); err != nil {
+		t.Errorf("planting a built-in should work: %v", err)
+	}
+}
+
+func TestPlantingBoundsCheck(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	bed := seedBed(t, s, owner, g.ID) // 200×200 → local bounds ±100
+	plant := seedOwnPlant(t, s, owner, 10)
+
+	// Center outside the object's local bounds → rejected (radius may overhang,
+	// but the center may not).
+	if _, err := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 150, YCM: 0, RadiusCM: 10,
+	}); !errors.Is(err, domain.ErrInvalidInput) {
+		t.Errorf("out-of-bounds center err = %v, want ErrInvalidInput", err)
+	}
+	// On the edge is allowed.
+	if _, err := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 100, YCM: -100, RadiusCM: 30,
+	}); err != nil {
+		t.Errorf("edge-of-bounds center should be allowed: %v", err)
+	}
+	// Non-positive radius rejected.
+	if _, err := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 0, YCM: 0, RadiusCM: 0,
+	}); !errors.Is(err, domain.ErrInvalidInput) {
+		t.Errorf("zero radius err = %v, want ErrInvalidInput", err)
+	}
+}
+
+func TestPlantingSoftRemoveLeavesFull(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	bed := seedBed(t, s, owner, g.ID)
+	plant := seedOwnPlant(t, s, owner, 10)
+
+	pl, _ := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 0, YCM: 0, RadiusCM: 10,
+	})
+
+	// It shows in /full, with a derived count.
+	full, _ := s.GardenFull(context.Background(), owner, g.ID)
+	if len(full.Plantings) != 1 {
+		t.Fatalf("full.Plantings = %d, want 1", len(full.Plantings))
+	}
+	if full.Plantings[0].DerivedCount != 3 {
+		t.Errorf("full derivedCount = %d, want 3", full.Plantings[0].DerivedCount)
+	}
+	if len(full.Plants) != 1 {
+		t.Errorf("full.Plants = %d, want 1 referenced plant", len(full.Plants))
+	}
+
+	// Soft-remove → it leaves /full.
+	rm := "2026-07-01"
+	if _, err := s.UpdatePlanting(context.Background(), owner, pl.ID,
+		PlantingPatch{SetRemovedAt: true, RemovedAt: &rm}, pl.Version); err != nil {
+		t.Fatalf("soft-remove: %v", err)
+	}
+	full, _ = s.GardenFull(context.Background(), owner, g.ID)
+	if len(full.Plantings) != 0 {
+		t.Errorf("removed plop still in /full: %d", len(full.Plantings))
+	}
+}
+
+func TestPlantingVersionConflict(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	bed := seedBed(t, s, owner, g.ID)
+	plant := seedOwnPlant(t, s, owner, 10)
+	pl, _ := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 0, YCM: 0, RadiusCM: 10,
+	})
+
+	nr := 20.0
+	if _, err := s.UpdatePlanting(context.Background(), owner, pl.ID, PlantingPatch{RadiusCM: &nr}, pl.Version); err != nil {
+		t.Fatalf("first update: %v", err)
+	}
+	current, err := s.UpdatePlanting(context.Background(), owner, pl.ID, PlantingPatch{RadiusCM: &nr}, pl.Version)
+	if !errors.Is(err, domain.ErrVersionConflict) {
+		t.Fatalf("stale update err = %v, want ErrVersionConflict", err)
+	}
+	if current == nil || current.Version != 2 {
+		t.Fatalf("conflict didn't return current row: %+v", current)
+	}
+	if current.DerivedCount < 1 {
+		t.Errorf("conflict current row should carry a derived count, got %d", current.DerivedCount)
+	}
+}
+
+func TestPlantingCrossUserIsNotFound(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	bob := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	bed := seedBed(t, s, owner, g.ID)
+	plant := seedOwnPlant(t, s, owner, 10)
+	pl, _ := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 0, YCM: 0, RadiusCM: 10,
+	})
+
+	nr := 5.0
+	if _, err := s.UpdatePlanting(context.Background(), bob, pl.ID, PlantingPatch{RadiusCM: &nr}, pl.Version); !errors.Is(err, domain.ErrNotFound) {
+		t.Errorf("bob update err = %v, want ErrNotFound", err)
+	}
+	if err := s.DeletePlanting(context.Background(), bob, pl.ID); !errors.Is(err, domain.ErrNotFound) {
+		t.Errorf("bob delete err = %v, want ErrNotFound", err)
+	}
+	// Bob can't place into owner's bed either.
+	if _, err := s.CreatePlanting(context.Background(), bob, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 0, YCM: 0, RadiusCM: 10,
+	}); !errors.Is(err, domain.ErrNotFound) {
+		t.Errorf("bob create err = %v, want ErrNotFound", err)
+	}
+}
+
+func TestDeletePlanting(t *testing.T) {
+	s := newTestService(t, openConfig())
+	owner := seedUser(t, s, "[email protected]")
+	g := seedGarden(t, s, owner)
+	bed := seedBed(t, s, owner, g.ID)
+	plant := seedOwnPlant(t, s, owner, 10)
+	pl, _ := s.CreatePlanting(context.Background(), owner, bed.ID, PlantingInput{
+		PlantID: plant.ID, XCM: 0, YCM: 0, RadiusCM: 10,
+	})
+
+	if err := s.DeletePlanting(context.Background(), owner, pl.ID); err != nil {
+		t.Fatalf("DeletePlanting: %v", err)
+	}
+	full, _ := s.GardenFull(context.Background(), owner, g.ID)
+	if len(full.Plantings) != 0 {
+		t.Errorf("planting still present after delete: %d", len(full.Plantings))
+	}
+}