export interface ApiErrorResponse {
  error: string;
  status: number;
}

export interface CheckFailure {
  actual?: unknown;
  expected?: unknown;
  kind: "error" | "mismatch";
  message: string;
  path: string;
  phase: string;
}

export interface CheckResult {
  durationMs: null | number;
  failure: CheckFailure | null;
  matched: boolean;
  statusDetail: null | string;
  timestamp: string;
}

export interface HealthResponse {
  ok: true;
  service: "dial-server";
  timestamp: string;
}

export interface HistoryResponse {
  items: CheckResult[];
  page: number;
  pageSize: number;
  total: number;
}

export interface MetaResponse {
  checkerTypes: string[];
}

export interface RecentSample {
  durationMs: null | number;
  timestamp: string;
  up: boolean;
}

export type RuntimeMode = "development" | "production" | "test";

export interface SummaryResponse {
  down: number;
  lastCheckTime: null | string;
  total: number;
  up: number;
}

export interface TargetStats {
  availability: number;
  totalChecks: number;
}

export interface TargetStatus {
  group: string;
  id: number;
  interval: string;
  latestCheck: CheckResult | null;
  name: string;
  recentSamples: RecentSample[];
  stats: TargetStats;
  target: string;
  type: string;
}

export interface TrendPoint {
  availability: number;
  avgDurationMs: null | number;
  hour: string;
  totalChecks: number;
}