[WEB-3964] refactor: permission layer (#7094)

* refactor: permission layer

* refactor: add original_role to project member serializer

* chore: minor fixes related to permission layer

* fix: strict type checking while checking user permissions

web/ce/store/member/project-member.store.ts

@@ -0,0 +1,43 @@
+import { computedFn } from "mobx-utils";
+// plane imports
+import { EUserProjectRoles } from "@plane/constants";
+// plane web imports
+import { RootStore } from "@/plane-web/store/root.store";
+// store
+import { IMemberRootStore } from "@/store/member";
+import { BaseProjectMemberStore, IBaseProjectMemberStore } from "@/store/member/base-project-member.store";
+
+export type IProjectMemberStore = IBaseProjectMemberStore;
+
+export class ProjectMemberStore extends BaseProjectMemberStore implements IProjectMemberStore {
+  constructor(_memberRoot: IMemberRootStore, rootStore: RootStore) {
+    super(_memberRoot, rootStore);
+  }
+
+  /**
+   * @description Returns the highest role from the project membership
+   * @param { string } userId
+   * @param { string } projectId
+   * @returns { EUserProjectRoles | undefined }
+   */
+  getUserProjectRole = computedFn((userId: string, projectId: string): EUserProjectRoles | undefined =>
+    this.getRoleFromProjectMembership(userId, projectId)
+  );
+
+  /**
+   * @description Returns the role from the project membership
+   * @param projectId
+   * @param userId
+   * @param role
+   */
+  getProjectMemberRoleForUpdate = (_projectId: string, _userId: string, role: EUserProjectRoles): EUserProjectRoles =>
+    role;
+
+  /**
+   * @description Processes the removal of a member from a project
+   * This method handles the cleanup of member data from the project member map
+   * @param projectId - The ID of the project to remove the member from
+   * @param userId - The ID of the user to remove from the project
+   */
+  processMemberRemoval = (projectId: string, userId: string) => this.handleMemberRemoval(projectId, userId);
+}

web/ce/store/user/permission.store.ts

@@ -0,0 +1,23 @@
+import { computedFn } from "mobx-utils";
+import { EUserPermissions } from "@plane/constants";
+import { RootStore } from "@/plane-web/store/root.store";
+import { BaseUserPermissionStore, IBaseUserPermissionStore } from "@/store/user/base-permissions.store";
+
+export type IUserPermissionStore = IBaseUserPermissionStore;
+
+export class UserPermissionStore extends BaseUserPermissionStore implements IUserPermissionStore {
+  constructor(store: RootStore) {
+    super(store);
+  }
+
+  /**
+   * @description Returns the project role from the workspace
+   * @param { string } workspaceSlug
+   * @param { string } projectId
+   * @returns { EUserPermissions | undefined }
+   */
+  getProjectRoleByWorkspaceSlugAndProjectId = computedFn(
+    (workspaceSlug: string, projectId: string): EUserPermissions | undefined =>
+      this.getProjectRole(workspaceSlug, projectId)
+  );
+}