75 lines
2.4 KiB
TypeScript
75 lines
2.4 KiB
TypeScript
import { ViewModel } from "../contracts/view-models/ViewModel";
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import { ActivityLevelDisplay } from "@/lib/display-objects/ActivityLevelDisplay";
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import type { DashboardStatsViewData } from '@/lib/view-data/DashboardStatsViewData';
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/**
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* DashboardStatsViewModel
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*
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* View Model for admin dashboard statistics.
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* Provides formatted statistics and derived metrics for UI.
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*/
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export class DashboardStatsViewModel extends ViewModel {
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totalUsers: number;
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activeUsers: number;
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suspendedUsers: number;
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deletedUsers: number;
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systemAdmins: number;
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recentLogins: number;
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newUsersToday: number;
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userGrowth: {
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label: string;
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value: number;
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color: string;
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}[];
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roleDistribution: {
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label: string;
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value: number;
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color: string;
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}[];
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statusDistribution: {
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active: number;
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suspended: number;
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deleted: number;
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};
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activityTimeline: {
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date: string;
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newUsers: number;
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logins: number;
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}[];
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// UI-specific derived fields (primitive outputs only)
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readonly activeRate: number;
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readonly activeRateFormatted: string;
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readonly adminRatio: string;
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readonly activityLevelLabel: string;
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readonly activityLevelValue: 'low' | 'medium' | 'high';
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constructor(viewData: DashboardStatsViewData) {
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super();
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this.totalUsers = viewData.totalUsers;
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this.activeUsers = viewData.activeUsers;
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this.suspendedUsers = viewData.suspendedUsers;
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this.deletedUsers = viewData.deletedUsers;
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this.systemAdmins = viewData.systemAdmins;
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this.recentLogins = viewData.recentLogins;
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this.newUsersToday = viewData.newUsersToday;
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this.userGrowth = viewData.userGrowth;
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this.roleDistribution = viewData.roleDistribution;
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this.statusDistribution = viewData.statusDistribution;
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this.activityTimeline = viewData.activityTimeline;
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// Derive active rate
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this.activeRate = this.totalUsers > 0 ? (this.activeUsers / this.totalUsers) * 100 : 0;
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this.activeRateFormatted = `${Math.round(this.activeRate)}%`;
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// Derive admin ratio
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const nonAdmins = Math.max(1, this.totalUsers - this.systemAdmins);
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this.adminRatio = `1:${Math.floor(nonAdmins / Math.max(1, this.systemAdmins))}`;
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// Derive activity level using Display Object
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const engagementRate = this.totalUsers > 0 ? (this.recentLogins / this.totalUsers) * 100 : 0;
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this.activityLevelLabel = ActivityLevelDisplay.levelLabel(engagementRate);
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this.activityLevelValue = ActivityLevelDisplay.levelValue(engagementRate);
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}
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}
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