export interface User {
  id: number
  email: string
  username: string
  displayName: string | null
  avatarUrl: string | null
  role: 'admin' | 'moderator' | 'user'
  isActive: boolean
  createdAt: string
  updatedAt: string
}

export interface Article {
  id: number
  slug: string
  title: string
  content: string | null
  excerpt: string | null
  coverImageUrl: string | null
  status: 'draft' | 'published' | 'archived'
  visibility: 'public' | 'unlisted' | 'private'
  viewCount: number
  publishedAt: string | null
  createdAt: string
  updatedAt: string
  author: Pick<User, 'id' | 'username' | 'displayName' | 'avatarUrl'>
  comments?: Comment[]
  reactions?: Reaction[]
}

export interface Comment {
  id: number
  articleId: number
  parentId: number | null
  content: string
  status: 'pending' | 'approved' | 'rejected' | 'suspicious'
  authorName: string | null
  authorEmail: string | null
  authorId: number | null
  createdAt: string
  updatedAt: string
  author?: User | null
  replies?: Comment[]
}

export interface Reaction {
  id: number
  articleId: number
  userId: number
  type: string
  createdAt: string
}

export interface ArticleVersion {
  id: number
  articleId: number
  content: string
  title: string
  version: number
  createdAt: string
  createdBy: Pick<User, 'id' | 'username' | 'displayName'>
}

export interface CommentAudit {
  id: number
  commentId: number
  action: string
  reason: string
  performedBy: string
  performedAt: string
}

export interface PaginationResponse<T> {
  items: T[]
  total: number
  page: number
  limit: number
  totalPages: number
}

export interface AnalyticsSummary {
  totalArticles: number
  totalComments: number
  totalUsers: number
  totalViews: number
  dailyViews: { date: string; views: number }[]
  popularArticles: Article[]
  commentStats: {
    pending: number
    approved: number
    rejected: number
    suspicious: number
  }
}

export interface LoginCredentials {
  emailOrUsername: string
  password: string
}

export interface CreateArticleInput {
  title: string
  content: string
  excerpt?: string
  coverImageUrl?: string
  status: 'draft' | 'published' | 'archived'
  visibility: 'public' | 'unlisted' | 'private'
}

export interface UpdateArticleInput extends Partial<CreateArticleInput> {
  slug?: string
}

export interface CreateCommentInput {
  content: string
  parentId?: number
}

export interface ApiError {
  message: string
  code: string
  details?: Record<string, string[]>
}