enhance: Add canCreateChannel role policy (#17121)

* Initial plan

* Add canCreateChannel role policy to control channel creation

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* Add canCreateChannel to getUserPolicies return value

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* Add canCreateChannel translations for en-US and ja-JP

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* Add canCreateChannel to misskey-js rolePolicies array

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* Add frontend UI for canCreateChannel policy configuration

Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>

* fix: build autogen files

* 🎨

* migrate

* fix: unnecessary changes to non-Japanese locales

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>
Co-authored-by: kakkokari-gtyih <67428053+kakkokari-gtyih@users.noreply.github.com>

packages/backend/src/core/RoleService.ts

@@ -47,6 +47,7 @@ export type RolePolicies = {
 	canSearchUsers: boolean;
 	canUseTranslator: boolean;
 	canHideAds: boolean;
+	canCreateChannel: boolean;
 	driveCapacityMb: number;
 	maxFileSizeMb: number;
 	alwaysMarkNsfw: boolean;
@@ -88,6 +89,7 @@ export const DEFAULT_POLICIES: RolePolicies = {
 	canSearchUsers: true,
 	canUseTranslator: true,
 	canHideAds: false,
+	canCreateChannel: true,
 	driveCapacityMb: 100,
 	maxFileSizeMb: 30,
 	alwaysMarkNsfw: false,
@@ -410,6 +412,7 @@ export class RoleService implements OnApplicationShutdown, OnModuleInit {
 			canSearchUsers: calc('canSearchUsers', vs => vs.some(v => v === true)),
 			canUseTranslator: calc('canUseTranslator', vs => vs.some(v => v === true)),
 			canHideAds: calc('canHideAds', vs => vs.some(v => v === true)),
+			canCreateChannel: calc('canCreateChannel', vs => vs.some(v => v === true)),
 			driveCapacityMb: calc('driveCapacityMb', vs => Math.max(...vs)),
 			maxFileSizeMb: calc('maxFileSizeMb', vs => Math.max(...vs)),
 			alwaysMarkNsfw: calc('alwaysMarkNsfw', vs => vs.some(v => v === true)),

packages/backend/src/models/json-schema/role.ts

@@ -224,6 +224,10 @@ export const packedRolePoliciesSchema = {
 			type: 'boolean',
 			optional: false, nullable: false,
 		},
+		canCreateChannel: {
+			type: 'boolean',
+			optional: false, nullable: false,
+		},
 		driveCapacityMb: {
 			type: 'integer',
 			optional: false, nullable: false,

packages/backend/src/server/api/endpoints/channels/create.ts

@@ -22,6 +22,8 @@ export const meta = {
 
 	kind: 'write:channels',
 
+	requiredRolePolicy: 'canCreateChannel',
+
 	limit: {
 		duration: ms('1hour'),
 		max: 10,