first commit

server/internal/services/sync.go

@@ -0,0 +1,40 @@
+package services
+
+import (
+	"context"
+	"time"
+
+	"github.com/mrhid6/keymanager/server/internal/db"
+	"github.com/mrhid6/keymanager/server/internal/models"
+	"go.mongodb.org/mongo-driver/v2/bson"
+)
+
+func BuildAuthorizedKeys(serverID string) ([]string, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+	defer cancel()
+
+	cursor, err := db.Col("assignments").Find(ctx, bson.M{
+		"server_id":  serverID,
+		"revoked_at": nil,
+	})
+	if err != nil {
+		return nil, err
+	}
+	defer cursor.Close(ctx)
+
+	var assignments []models.Assignment
+	if err := cursor.All(ctx, &assignments); err != nil {
+		return nil, err
+	}
+
+	var lines []string
+	for _, a := range assignments {
+		var key models.Key
+		err := db.Col("keys").FindOne(ctx, bson.M{"key_id": a.KeyID}).Decode(&key)
+		if err != nil {
+			continue
+		}
+		lines = append(lines, key.PublicKey)
+	}
+	return lines, nil
+}