Rewrite identity and access management

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

pkg/iam/api_key.go

@@ -0,0 +1,78 @@
+// Copyright (c) 2025 Probo Inc <hello@getprobo.com>.
+//
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+//
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+// PERFORMANCE OF THIS SOFTWARE.
+
+package iam
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"go.gearno.de/kit/pg"
+	"go.gearno.de/x/ref"
+	"go.probo.inc/probo/pkg/coredata"
+	"go.probo.inc/probo/pkg/gid"
+)
+
+type (
+	APIKeyService struct {
+		*Service
+	}
+)
+
+func NewAPIKeyService(svc *Service) *APIKeyService {
+	return &APIKeyService{Service: svc}
+}
+
+func (s *APIKeyService) GetAPIKey(ctx context.Context, keyID gid.GID) (*coredata.UserAPIKey, error) {
+	var (
+		apiKey = &coredata.UserAPIKey{}
+		now    = time.Now()
+	)
+
+	err := s.pg.WithTx(
+		ctx,
+		func(tx pg.Conn) error {
+			if err := apiKey.LoadByID(ctx, tx, keyID); err != nil {
+				if err == coredata.ErrResourceNotFound {
+					return NewUserAPIKeyNotFoundError(keyID)
+				}
+			}
+
+			if apiKey.ExpireReason != nil {
+				return NewUserAPIKeyExpiredError(keyID)
+			}
+
+			if now.After(apiKey.ExpiresAt) {
+				apiKey.ExpireReason = ref.Ref(coredata.ExpireReasonIdleTimeout)
+				apiKey.ExpiresAt = now
+				apiKey.UpdatedAt = now
+
+				if err := apiKey.Update(ctx, tx); err != nil {
+					return fmt.Errorf("cannot update user api key: %w", err)
+				}
+
+				return NewUserAPIKeyExpiredError(keyID)
+			}
+
+			return nil
+		},
+	)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return apiKey, nil
+}