export interface TeacherReference {
  name: string;
  code: string;
}

export type AbsenceEntry =
  | { type: 'wholeDay'; teacher: string; teacherCode: string }
  | { type: 'single'; teacher: string; teacherCode: string; hours: string }
  | { type: 'range'; teacher: string; teacherCode: string; hours: { from: string; to: string } }
  | { type: 'exkurze'; teacher: string; teacherCode: string }
  | { type: 'zastoupen'; teacher: string; teacherCode: string; zastupuje: { teacher: string | null } }
  | { type: 'invalid'; original: string; teacher?: null; teacherCode?: null };

export interface ChangeEntry {
  text: string;
  backgroundColor?: string | null;
  foregroundColor?: string | null;
}

export interface SubstitutionDayData {
  info: { inWork: boolean };
  takesPlace: string;
  changes: Record<string, (ChangeEntry | null)[]>;
  absence: AbsenceEntry[];
}

export interface SubstitutionData {
  status: {
    currentUpdateSchedule: number;
    lastUpdated: string;
  }
  schedule: Record<string, SubstitutionDayData>;
}

export interface Hour {
  subject: string;
  title: string;
  teacher: {
    code: string;
    name: string;
  }
  group?: string;
  room: string;
}

export interface LocalData {
  class: string;
  timetable: Hour[][][];
}