113 lines
4.2 KiB
TypeScript
113 lines
4.2 KiB
TypeScript
/**
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* Health View Data Builder
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*
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* Transforms health DTO data into UI-ready view models.
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* This layer isolates the UI from API churn by providing a stable interface
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* between the API layer and the presentation layer.
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*/
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import type { HealthViewData, HealthStatus, HealthMetrics, HealthComponent, HealthAlert } from '@/lib/view-data/HealthViewData';
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import { HealthStatusDisplay } from '@/lib/display-objects/HealthStatusDisplay';
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import { HealthMetricDisplay } from '@/lib/display-objects/HealthMetricDisplay';
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import { HealthComponentDisplay } from '@/lib/display-objects/HealthComponentDisplay';
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import { HealthAlertDisplay } from '@/lib/display-objects/HealthAlertDisplay';
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export interface HealthDTO {
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status: 'ok' | 'degraded' | 'error' | 'unknown';
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timestamp: string;
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uptime?: number;
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responseTime?: number;
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errorRate?: number;
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lastCheck?: string;
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checksPassed?: number;
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checksFailed?: number;
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components?: Array<{
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name: string;
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status: 'ok' | 'degraded' | 'error' | 'unknown';
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lastCheck?: string;
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responseTime?: number;
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errorRate?: number;
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}>;
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alerts?: Array<{
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id: string;
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type: 'critical' | 'warning' | 'info';
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title: string;
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message: string;
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timestamp: string;
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}>;
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}
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export class HealthViewDataBuilder {
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static build(dto: HealthDTO): HealthViewData {
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const now = new Date();
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const lastUpdated = dto.timestamp || now.toISOString();
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// Build overall status
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const overallStatus: HealthStatus = {
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status: dto.status,
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timestamp: dto.timestamp,
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formattedTimestamp: HealthStatusDisplay.formatTimestamp(dto.timestamp),
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relativeTime: HealthStatusDisplay.formatRelativeTime(dto.timestamp),
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statusLabel: HealthStatusDisplay.formatStatusLabel(dto.status),
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statusColor: HealthStatusDisplay.formatStatusColor(dto.status),
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statusIcon: HealthStatusDisplay.formatStatusIcon(dto.status),
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};
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// Build metrics
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const metrics: HealthMetrics = {
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uptime: HealthMetricDisplay.formatUptime(dto.uptime),
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responseTime: HealthMetricDisplay.formatResponseTime(dto.responseTime),
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errorRate: HealthMetricDisplay.formatErrorRate(dto.errorRate),
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lastCheck: dto.lastCheck || lastUpdated,
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formattedLastCheck: HealthMetricDisplay.formatTimestamp(dto.lastCheck || lastUpdated),
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checksPassed: dto.checksPassed || 0,
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checksFailed: dto.checksFailed || 0,
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totalChecks: (dto.checksPassed || 0) + (dto.checksFailed || 0),
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successRate: HealthMetricDisplay.formatSuccessRate(dto.checksPassed, dto.checksFailed),
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};
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// Build components
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const components: HealthComponent[] = (dto.components || []).map((component) => ({
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name: component.name,
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status: component.status,
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statusLabel: HealthComponentDisplay.formatStatusLabel(component.status),
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statusColor: HealthComponentDisplay.formatStatusColor(component.status),
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statusIcon: HealthComponentDisplay.formatStatusIcon(component.status),
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lastCheck: component.lastCheck || lastUpdated,
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formattedLastCheck: HealthComponentDisplay.formatTimestamp(component.lastCheck || lastUpdated),
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responseTime: HealthMetricDisplay.formatResponseTime(component.responseTime),
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errorRate: HealthMetricDisplay.formatErrorRate(component.errorRate),
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}));
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// Build alerts
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const alerts: HealthAlert[] = (dto.alerts || []).map((alert) => ({
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id: alert.id,
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type: alert.type,
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title: alert.title,
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message: alert.message,
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timestamp: alert.timestamp,
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formattedTimestamp: HealthAlertDisplay.formatTimestamp(alert.timestamp),
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relativeTime: HealthAlertDisplay.formatRelativeTime(alert.timestamp),
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severity: HealthAlertDisplay.formatSeverity(alert.type),
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severityColor: HealthAlertDisplay.formatSeverityColor(alert.type),
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}));
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// Calculate derived fields
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const hasAlerts = alerts.length > 0;
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const hasDegradedComponents = components.some((c) => c.status === 'degraded');
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const hasErrorComponents = components.some((c) => c.status === 'error');
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return {
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overallStatus,
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metrics,
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components,
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alerts,
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hasAlerts,
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hasDegradedComponents,
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hasErrorComponents,
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lastUpdated,
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formattedLastUpdated: HealthStatusDisplay.formatTimestamp(lastUpdated),
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};
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}
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}
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