import { CARD_VIEW_HISTORY_KEY } from '../constants/storage';
import type { CardViewRecord, Lawyer } from '../types/card';

function normalizeLawyerSnapshot(input: unknown): Lawyer | undefined {
  if (!input || typeof input !== 'object') {
    return undefined;
  }

  const lawyer = input as Partial<Lawyer>;
  if (typeof lawyer.id !== 'string' || !lawyer.id) {
    return undefined;
  }

  return {
    id: lawyer.id,
    name: typeof lawyer.name === 'string' ? lawyer.name : '',
    title: typeof lawyer.title === 'string' ? lawyer.title : '',
    office: typeof lawyer.office === 'string' ? lawyer.office : '',
    phone: typeof lawyer.phone === 'string' ? lawyer.phone : '',
    email: typeof lawyer.email === 'string' ? lawyer.email : '',
    address: typeof lawyer.address === 'string' ? lawyer.address : '',
    avatar: typeof lawyer.avatar === 'string' ? lawyer.avatar : '',
    coverImage: typeof lawyer.coverImage === 'string' ? lawyer.coverImage : '',
    specialties: Array.isArray(lawyer.specialties)
      ? lawyer.specialties.filter((item): item is string => typeof item === 'string')
      : [],
    bio: typeof lawyer.bio === 'string' ? lawyer.bio : '',
    wechatQrImage: typeof lawyer.wechatQrImage === 'string' ? lawyer.wechatQrImage : '',
  };
}

export function getCardViewHistory(): CardViewRecord[] {
  const raw = wx.getStorageSync(CARD_VIEW_HISTORY_KEY);
  if (!Array.isArray(raw)) {
    return [];
  }
  return raw
    .map((item) => {
      const record = item as { lawyerId?: unknown; viewedAt?: unknown; lawyer?: unknown };
      const lawyerId = typeof record.lawyerId === 'string' ? record.lawyerId : '';
      const viewedAt = typeof record.viewedAt === 'number' ? record.viewedAt : 0;
      const lawyer = normalizeLawyerSnapshot(record.lawyer);
      return { lawyerId, viewedAt, lawyer };
    })
    .filter((item) => Boolean(item.lawyerId) && item.viewedAt > 0)
    .sort((a, b) => b.viewedAt - a.viewedAt);
}

export function appendCardViewRecord(lawyer: Lawyer): void {
  if (!lawyer.id) {
    return;
  }

  const current = getCardViewHistory().filter((item) => item.lawyerId !== lawyer.id);
  current.unshift({
    lawyerId: lawyer.id,
    viewedAt: Date.now(),
    lawyer,
  });
  wx.setStorageSync(CARD_VIEW_HISTORY_KEY, current);
}

export function clearCardViewHistory(): void {
  wx.removeStorageSync(CARD_VIEW_HISTORY_KEY);
}