Initial commit

internal/storage/plant_locations.go

@@ -0,0 +1,42 @@
+package storage
+
+import (
+	"strings"
+	"time"
+
+	"gardomatic.kleiax.de/internal/platform/validate"
+)
+
+// PlantLocationModelInterface persists assignments between plants and locations.
+type PlantLocationModelInterface interface {
+	Insert(gardenID int, plantLocation PlantLocation) (PlantLocation, error)
+	Get(gardenID, id int) (PlantLocation, error)
+	GetAllForPlant(gardenID, plantID int) ([]PlantLocation, error)
+	GetAllForLocation(gardenID, locationID int) ([]PlantLocation, error)
+	Update(gardenID int, plantLocation PlantLocation) (PlantLocation, error)
+	Delete(gardenID, id int) error
+}
+
+// PlantLocation records where and when a quantity of plants was planted.
+type PlantLocation struct {
+	ID         int        `json:"id"`
+	PlantID    int        `json:"plant_id"`
+	LocationID int        `json:"location_id"`
+	Quantity   int        `json:"quantity"`
+	PlantedAt  *time.Time `json:"planted_at,omitempty"`
+	RemovedAt  *time.Time `json:"removed_at,omitempty"`
+	Notes      string     `json:"notes"`
+	CreatedAt  time.Time  `json:"created_at"`
+	Version    int        `json:"version"`
+}
+
+// ValidatePlantLocation applies persistence-independent assignment validation rules.
+func ValidatePlantLocation(v *validate.Validator, assignment PlantLocation) {
+	v.Check(assignment.PlantID > 0, "plant_id", "must be a positive integer")
+	v.Check(assignment.LocationID > 0, "location_id", "must be a positive integer")
+	v.Check(assignment.Quantity > 0, "quantity", "must be greater than zero")
+	v.Check(len(strings.TrimSpace(assignment.Notes)) <= 10_000, "notes", "must not be more than 10000 bytes long")
+	if assignment.PlantedAt != nil && assignment.RemovedAt != nil {
+		v.Check(!assignment.RemovedAt.Before(*assignment.PlantedAt), "removed_at", "must not be before planted_at")
+	}
+}