[PM-7290] replace legacy abstraction with generation algorithms (#9435)

* replace legacy abstraction with generation algorithms
* delete mv2-based generator services

libs/common/src/tools/generator/policies.ts

@@ -0,0 +1,48 @@
+import { Policy as AdminPolicy } from "@bitwarden/common/admin-console/models/domain/policy";
+
+import { PassphraseGeneratorOptionsEvaluator, PassphraseGeneratorPolicy } from "./passphrase";
+import {
+  DisabledPassphraseGeneratorPolicy,
+  leastPrivilege as passphraseLeastPrivilege,
+} from "./passphrase/passphrase-generator-policy";
+import { PasswordGeneratorOptionsEvaluator, PasswordGeneratorPolicy } from "./password";
+import {
+  DisabledPasswordGeneratorPolicy,
+  leastPrivilege as passwordLeastPrivilege,
+} from "./password/password-generator-policy";
+
+/** Determines how to construct a password generator policy */
+export type PolicyConfiguration<Policy, Evaluator> = {
+  /** The value of the policy when it is not in effect. */
+  disabledValue: Policy;
+
+  /** Combines multiple policies set by the administrative console into
+   *  a single policy.
+   */
+  combine: (acc: Policy, policy: AdminPolicy) => Policy;
+
+  /** Converts policy service data into an actionable policy.
+   */
+  createEvaluator: (policy: Policy) => Evaluator;
+};
+
+const PASSPHRASE = Object.freeze({
+  disabledValue: DisabledPassphraseGeneratorPolicy,
+  combine: passphraseLeastPrivilege,
+  createEvaluator: (policy) => new PassphraseGeneratorOptionsEvaluator(policy),
+} as PolicyConfiguration<PassphraseGeneratorPolicy, PassphraseGeneratorOptionsEvaluator>);
+
+const PASSWORD = Object.freeze({
+  disabledValue: DisabledPasswordGeneratorPolicy,
+  combine: passwordLeastPrivilege,
+  createEvaluator: (policy) => new PasswordGeneratorOptionsEvaluator(policy),
+} as PolicyConfiguration<PasswordGeneratorPolicy, PasswordGeneratorOptionsEvaluator>);
+
+/** Policy configurations */
+export const Policies = Object.freeze({
+  /** Passphrase policy configuration */
+  Passphrase: PASSPHRASE,
+
+  /** Passphrase policy configuration */
+  Password: PASSWORD,
+});