feat: add api

control-plane/api/internal/demos/store.go

@@ -0,0 +1,70 @@
+package demos
+
+import (
+	"errors"
+
+	"gorm.io/gorm"
+)
+
+// Store : persistance des démos.
+type Store interface {
+	Create(d Demo) (Demo, error)
+	Get(id string) (Demo, bool)
+	List() ([]Demo, error)
+	ListByUsername(username string) ([]Demo, error)
+	Update(d Demo) (Demo, error)
+	CountActive() (int, error)
+}
+
+// GormStore : Store adossé à PostgreSQL via GORM.
+type GormStore struct{ db *gorm.DB }
+
+func NewGormStore(db *gorm.DB) *GormStore { return &GormStore{db: db} }
+
+func (s *GormStore) Create(d Demo) (Demo, error) {
+	if err := s.db.Create(&d).Error; err != nil {
+		return Demo{}, err
+	}
+	return d, nil
+}
+
+func (s *GormStore) Get(id string) (Demo, bool) {
+	var d Demo
+	err := s.db.Where("id = ?", id).First(&d).Error
+	if errors.Is(err, gorm.ErrRecordNotFound) || err != nil {
+		return Demo{}, false
+	}
+	return d, true
+}
+
+func (s *GormStore) List() ([]Demo, error) {
+	var out []Demo
+	if err := s.db.Order("created_at DESC").Find(&out).Error; err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (s *GormStore) ListByUsername(username string) ([]Demo, error) {
+	var out []Demo
+	if err := s.db.Where("username = ?", username).Order("created_at DESC").Find(&out).Error; err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (s *GormStore) Update(d Demo) (Demo, error) {
+	if err := s.db.Save(&d).Error; err != nil {
+		return Demo{}, err
+	}
+	return d, nil
+}
+
+// CountActive compte les démos occupant de la capacité.
+func (s *GormStore) CountActive() (int, error) {
+	var n int64
+	err := s.db.Model(&Demo{}).
+		Where("status IN ?", []Status{StatusPending, StatusProvisioning, StatusReady, StatusExpiring}).
+		Count(&n).Error
+	return int(n), err
+}