export type UserRole = "admin" | "user";

export type GenerationJobStatus = "success" | "error";

export interface UserRecord {
  id: string;
  username: string;
  passwordHash: string;
  role: UserRole;
  monthlyQuota: number | null;
  isActive: boolean;
  createdAt: string;
  updatedAt: string;
}

export interface PublicUser {
  id: string;
  username: string;
  role: UserRole;
  monthlyQuota: number | null;
  isActive: boolean;
  createdAt: string;
  updatedAt: string;
}

export interface UserUsageSummary extends UserRecord {
  usedThisPeriod: number;
}

export interface SettingsSnapshot {
  defaultMonthlyQuota: number;
}

export interface QuotaSnapshot {
  periodKey: string;
  limit: number | null;
  used: number;
  remaining: number | null;
  isUnlimited: boolean;
}

export interface AdminUserSummary extends PublicUser {
  usedThisPeriod: number;
  limit: number | null;
  remaining: number | null;
  isUnlimited: boolean;
}

export interface AdminSnapshot {
  settings: SettingsSnapshot;
  periodKey: string;
  users: AdminUserSummary[];
}

export type GenerateSize = "auto" | "1024x1024" | "1536x1024" | "1024x1536";

export type GenerateQuality = "auto" | "low" | "medium" | "high";

export type GenerateOutputFormat = "png" | "jpeg" | "webp";

export type GenerateBackground = "auto" | "transparent" | "opaque";

export type GenerateModeration = "auto" | "low";

export interface GeneratePayload {
  model: string;
  prompt: string;
  size: GenerateSize;
  quality: GenerateQuality;
  n: number;
  moderation: GenerateModeration;
  output_format: GenerateOutputFormat;
  background: GenerateBackground;
  output_compression?: number;
  user?: string;
}

export interface GeneratedImage {
  id: string;
  base64: string;
  mimeType: string;
  fileName: string;
  revisedPrompt: string | null;
  url?: string;
}

export interface GenerateMeta {
  model: string;
  size: GenerateSize;
  quality: GenerateQuality;
  outputFormat: GenerateOutputFormat;
  background: GenerateBackground;
  moderation: GenerateModeration;
  outputCompression?: number;
  count: number;
  durationMs: number;
  created: number | null;
  usage: unknown;
}

export interface GenerateResult {
  images: GeneratedImage[];
  meta: GenerateMeta;
}

export interface SessionRecord {
  sessionId: string;
  userId: string;
  expiresAt: string;
}

export interface StoredGeneratedImageInput {
  id: string;
  fileName: string;
  storageKey: string;
  mimeType: string;
  fileSize: number;
  revisedPrompt: string | null;
}

export interface ImageHistoryItem {
  id: string;
  jobId: string;
  userId: string;
  username: string;
  prompt: string;
  revisedPrompt: string | null;
  model: string | null;
  size: string | null;
  quality: string | null;
  outputFormat: string | null;
  background: string | null;
  moderation: string | null;
  fileName: string;
  mimeType: string;
  fileSize: number;
  createdAt: string;
  imageUrl: string;
  downloadUrl: string;
}

export interface StoredImageAsset {
  id: string;
  userId: string;
  fileName: string;
  mimeType: string;
  fileSize: number;
  storageKey: string;
}

export type UsageEventMeta = Record<string, unknown>;

export interface HttpError extends Error {
  statusCode?: number;
  detail?: unknown;
}