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

export interface HealthResponse {
  ok: true;
  service: "gateway-checker";
  timestamp: string;
}

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

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

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

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

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

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

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

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

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