import { logger } from '../../debugConfig';

const apiBase = (import.meta.env.VITE_API_BASE as string) || '';

export interface BootstrapProfile {
  id: string;
  email: string;
  display_name: string;
  user_type: string;
  school_id: string | null;
}

export interface BootstrapMembership {
  institute_id: string;
  role: string;
  status: string;
  is_active: boolean;
  institute: {
    id: string;
    name: string;
    urn: string | null;
  };
}

export interface BootstrapActiveInstitute {
  id: string | null;
  source: string;
  membership_role: string | null;
}

export interface BootstrapPermissions {
  platform_admin: boolean;
  platform_super_admin: boolean;
  can_create_school: boolean;
  can_manage_school: boolean;
  can_manage_calendar: boolean;
  can_manage_timetable: boolean;
  can_invite_staff: boolean;
  can_manage_classes: boolean;
  can_view_student_data: boolean;
  can_use_canvas: boolean;
}

export interface BootstrapOnboarding {
  next_step: string;
  required: string[];
  optional: string[];
  message: string;
}

export interface BootstrapCalendarStatus {
  available: boolean;
  academic_year_count: number;
  term_count: number;
  current_academic_year_id: string | null;
  needs_setup: boolean;
}

export interface BootstrapTimetableStatus {
  available: boolean;
  teacher_timetable_id: string | null;
  slot_count: number;
  needs_setup: boolean;
}

export interface BootstrapGraphStatus {
  available: boolean;
  user_db: string | null;
  institute_db: string | null;
  projection_state: string;
  needs_rebuild: boolean;
  last_checked_at: string | null;
  error_code: string | null;
}

export interface BootstrapResponse {
  profile: BootstrapProfile;
  memberships: BootstrapMembership[];
  active_institute: BootstrapActiveInstitute;
  permissions: BootstrapPermissions;
  school_status: string;
  onboarding: BootstrapOnboarding;
  calendar_status: BootstrapCalendarStatus;
  timetable_status: BootstrapTimetableStatus;
  graph_status: BootstrapGraphStatus;
}

let cachedBootstrap: BootstrapResponse | null = null;
let cacheTimestamp = 0;
const CACHE_TTL_MS = 60_000; // 60 second cache

export async function fetchBootstrapData(accessToken: string): Promise<BootstrapResponse | null> {
  if (!accessToken) return null;

  // Return cached data if fresh
  if (cachedBootstrap && Date.now() - cacheTimestamp < CACHE_TTL_MS) {
    return cachedBootstrap;
  }

  try {
    const res = await fetch(`${apiBase}/me/bootstrap`, {
      headers: { Authorization: `Bearer ${accessToken}` },
    });

    if (!res.ok) {
      logger.warn('bootstrap-service', `Bootstrap fetch failed: ${res.status}`);
      return cachedBootstrap; // Return stale cache on error
    }

    const data: BootstrapResponse = await res.json();
    cachedBootstrap = data;
    cacheTimestamp = Date.now();
    return data;
  } catch (err) {
    logger.error('bootstrap-service', 'Bootstrap fetch error', { err });
    return cachedBootstrap; // Return stale cache on error
  }
}

export function invalidateBootstrapCache(): void {
  cachedBootstrap = null;
  cacheTimestamp = 0;
}