export type AppState = 'WELCOME' | 'LOGIN' | 'DASHBOARD' | 'ADMIN_LANDING' | 'FACULTY_DASHBOARD' | 'VERIFY';
export type UserRole = 'STUDENT' | 'COORDINATOR' | 'ADMIN';
export type DashboardView = 'HOME' | 'EVENTS' | 'REGISTRATIONS' | 'PROFILE' | 'ABOUT' | 'CONTACT' | 'STATUS_TRACKER';
export type FacultyView = 'OVERVIEW' | 'PARTICIPANTS' | 'ATTENDANCE' | 'NOTIFICATIONS' | 'PROFILE';

export interface ResourcePerson {
  id?: string;
  type: 'INTERNAL' | 'EXTERNAL';
  name: string;
  dept?: string;
  college_name?: string;
  phone: string;
  email: string;
}

export interface Batch {
  id: number;
  startTime: string;
  endTime: string;
  date?: string;
  resourcePerson?: ResourcePerson;
}

export interface EventDay {
  date: string;
  batches: Batch[]; // If unified, this will have one batch at index 0
  startTime?: string;
  endTime?: string;
  resourcePerson?: ResourcePerson;
}

export interface EventSchedule {
  id: string;
  event_id: string;
  day_idx: number;
  batch_idx: number;
  date: string;
  start_time: string;
  end_time: string;
  resource_person?: ResourcePerson;
}

export interface Event {
  id: string;
  title: string;
  date: string;
  location: string;
  category: 'TECHNICAL' | 'NON-TECHNICAL' | 'WORKSHOP' | 'CENTRE-ACTIVITY';
  domain: string;
  club?: string;
  image: string;
  pricingType: 'PAID' | 'FREE';
  coordinator: string;
  status?: 'Registered' | 'Event Ongoing' | 'Completed' | 'Scheduled' | 'APPROVED' | 'COMPLETED' | 'ONGOING' | 'REJECTED';
  hasRegistrationFee?: boolean;
  registrationFee?: number;
  paymentLink?: string;
  registrationDeadline?: string;
  maxParticipants?: number;
  durationDays?: number;
  schedule?: EventSchedule[];
  deptLimits?: Record<string, number>; // Maps department codes to specific seat counts
  deptSectionLimits?: Record<string, Record<string, number>>; // Maps department codes to their section capacities
  currentParticipants?: number;
  currentDeptCounts?: Record<string, number>;
  currentDeptSectionCounts?: Record<string, Record<string, number>>; // Maps department codes to their sections' current counts
  event_summary?: string;
  isTeamEvent?: boolean;
  teamSizeLimit?: number;
  teamComposition?: 'INTER_DEPT' | 'MIXED';
  created_by?: string;
  participantType?: 'INTERNAL' | 'EXTERNAL' | 'BOTH';
  verificationStatus?: 'PENDING' | 'PENDING_HOD' | 'PENDING_ADMIN' | 'APPROVED' | 'REJECTED';
  refreshment_expense?: number;
  transportation_expense?: number;
  session_coverage_fee?: number;
  total_expense?: number;
  conducting_dept?: string;
  request_by_faculty?: string;
  request_by_HOD?: string;
  targetedBatch?: string;
  openToAll?: boolean;
  academicYears?: string[];
  targetedSections?: string[];
  department?: string;
}

export interface Announcement {
  id: string;
  title: string;
  message: string;
  timestamp: any;
  expiresAt?: any;
  type: 'DELAY' | 'INFO' | 'URGENT' | 'ENDED' | 'ONGOING';
  eventId?: string;
  eventTitle?: string;
}

export interface Ticket {
  ticketId: string;
  qrCodeData: string;
  eventId: string;
  userId: string;
  userEmail: string;
  userName: string;
  regNo?: string;
  dept?: string;
  section?: string;
  status: 'ACTIVE' | 'USED' | 'CANCELLED';
  createdAt: any;
}

export interface Participant {
  id: string;
  studentName: string;
  regNo: string;
  branch: string;
  year: string;
  eventName: string;
  eventId: string;
  location: string;
  timings: string;
  category: 'TECHNICAL' | 'NON-TECHNICAL' | 'WORKSHOP' | 'CENTRE-ACTIVITY';
}

export interface StudentRequest {
  id: string;
  studentName: string;
  rollNo: string;
  branch: string;
  eventName: string;
  eventId: string;
  timestamp: string;
  status: 'PENDING' | 'APPROVED' | 'REJECTED';
}


export interface UserProfile {
  name: string;
  email: string;
  phone?: string;
  year?: string;
  section?: string;
  department?: string;
  reg_no?: string;
  id?: string;
}

export interface SpecialEvent {
  id: string;
  created_at: string;
  title: string;
  description: string;
  link: string;
  created_by: string;
  is_active: boolean;
  verificationStatus?: 'PENDING' | 'PENDING_HOD' | 'PENDING_ADMIN' | 'APPROVED' | 'REJECTED';
  image?: string;
}

export interface DeptBatch {
  id: number;
  name: string;
  department: string;
  classes: string[]; // List of Year - Section strings, e.g. ["1st Year - A", "2nd Year - B"]
}