import { apiGet, apiPost } from "@/lib/api/client";
import { hasLiveSession } from "@/lib/api/mode";

/**
 * Backend persistence for the onboarding study profile.
 *
 * Matches the tuition-profile.ts pattern: localStorage stays the offline
 * source of truth; the backend is the durable per-user copy that survives a
 * device change. Both helpers are best-effort and no-op when the student is
 * not logged in (preview/demo/anonymous), so they never 401-spam anonymous
 * visitors.
 */

export type StudyProfileRemote = {
  id: string;
  user_id: string;
  exam: string | null;
  board: string | null;
  grade: string | null;
  subject: string | null;
  chapter: string | null;
  topic: string | null;
  level: string | null;
  goal: string | null;
  time_left: string | null;
  language_preference: string | null;
  primary_need: string | null;
  weak_areas: string[];
  selected_plan: string | null;
  trial_started: boolean;
  onboarding_completed: boolean;
  extra: Record<string, unknown>;
  created_at: string;
  updated_at: string;
};

export type StudyProfileInput = Partial<
  Pick<
    StudyProfileRemote,
    | "exam"
    | "board"
    | "grade"
    | "subject"
    | "chapter"
    | "topic"
    | "level"
    | "goal"
    | "time_left"
    | "language_preference"
    | "primary_need"
    | "weak_areas"
    | "selected_plan"
    | "trial_started"
    | "onboarding_completed"
    | "extra"
  >
>;

/** Returns true when the profile was persisted to the backend. */
export async function saveStudyProfileRemote(input: StudyProfileInput): Promise<boolean> {
  if (!hasLiveSession()) return false;
  try {
    await apiPost<StudyProfileRemote, StudyProfileInput>("/study-profile", input);
    return true;
  } catch {
    return false;
  }
}

/** Returns the saved study profile, or null (404/no session/failure). */
export async function getStudyProfileRemote(): Promise<StudyProfileRemote | null> {
  if (!hasLiveSession()) return null;
  try {
    return await apiGet<StudyProfileRemote | null>("/study-profile/me?optional=true");
  } catch {
    return null;
  }
}