refactor: application dependency management (#2363)

packages/encryption/src/Domain/Operator/EncryptionOperators.ts

@@ -0,0 +1,35 @@
+import { ProtocolVersion, ProtocolVersionLatest } from '@standardnotes/common'
+import { PureCryptoInterface } from '@standardnotes/sncrypto-common'
+import { createOperatorForVersion } from './Functions'
+import { AnyOperatorInterface } from './OperatorInterface/TypeCheck'
+import { EncryptionOperatorsInterface } from './EncryptionOperatorsInterface'
+
+export class EncryptionOperators implements EncryptionOperatorsInterface {
+  private operators: Record<string, AnyOperatorInterface> = {}
+
+  constructor(private crypto: PureCryptoInterface) {
+    this.crypto = crypto
+  }
+
+  public deinit(): void {
+    ;(this.crypto as unknown) = undefined
+    this.operators = {}
+  }
+
+  public operatorForVersion(version: ProtocolVersion): AnyOperatorInterface {
+    const operatorKey = version
+    let operator = this.operators[operatorKey]
+    if (!operator) {
+      operator = createOperatorForVersion(version, this.crypto)
+      this.operators[operatorKey] = operator
+    }
+    return operator
+  }
+
+  /**
+   * Returns the operator corresponding to the latest protocol version
+   */
+  public defaultOperator(): AnyOperatorInterface {
+    return this.operatorForVersion(ProtocolVersionLatest)
+  }
+}