export type Role = 'student' | 'professor' | 'admin';

export interface User {
  id: string;
  email: string;
  role: Role;
  display_name: string | null;
  preferences: { tutoiement?: boolean; course?: string; deep?: boolean; locale?: string; font_scale?: number };
  consent_at: string | null;
  has_password?: boolean;
}

export interface Course {
  code: string;
  title: string;
  term: string;
  modules: string[];
  suggestions: string[];
  site: string;
  deadlines: { label: string; date: string }[];
  announcement: string;
}

export interface Conversation {
  id: string;
  title: string;
  course: string;
  pinned: boolean;
  archived: boolean;
  created_at: string;
  updated_at: string;
}

export interface Artifact {
  type: string;
  file_id: string | null;
  filename: string | null;
  preview?: unknown;
  url?: string | null;
}

export interface ToolCallView {
  id: string;
  name: string;
  arguments: Record<string, unknown>;
  args_preview?: string;
  summary: string;
  payload: Record<string, unknown>;
  artifacts?: Artifact[];
  status: 'running' | 'ok' | 'error';
  progress?: string;
  duration_ms: number;
}

export interface Message {
  id: string;
  role: 'user' | 'assistant' | 'system';
  content: string;
  model?: string | null;
  created_at: string;
  feedback?: string | null;
  attachments?: string[];
  tool_calls?: ToolCallView[];
  cost_usd?: number;
  streaming?: boolean;
  error?: string;
  latency_ms?: number;
}

export interface UploadedFile {
  file_id: string;
  filename: string;
  type: string;
  size: number;
  url: string;
  kind?: string;
  pinned?: boolean;
  created_at?: string;
}

export interface QuizQuestion {
  id: string;
  type: 'mcq' | 'true_false' | 'numeric';
  prompt: string;
  choices?: string[];
  unit?: string;
}

export interface QuizPayload {
  quiz_id: string;
  title: string;
  course: string;
  topic: string;
  difficulty: string;
  questions: QuizQuestion[];
  sources?: { module: string; section: string; url: string }[];
}

export interface QuizResult {
  score: number;
  correct: number;
  total: number;
  results: { id: string; correct: boolean; given: unknown; answer: unknown; explanation: string; unit?: string }[];
}