import type { ActivityPosterItem, ActivityPosterSelection } from '@dukang/shared-types';
import { request } from './api';

export async function listActivityPosters() {
  const data = await request<ActivityPosterItem[]>('PARTNER_H5', '/partner/activity-posters', {
    silent: true,
  });
  return Array.isArray(data) ? data : [];
}

export async function fetchAssocQrcodeImage(): Promise<Blob> {
  const token = localStorage.getItem('accessToken');
  const res = await fetch('/api/v1/partner/assoc/qrcode', {
    headers: {
      Authorization: token ? `Bearer ${token}` : '',
      'X-Client-App': 'PARTNER_H5',
    },
  });
  if (!res.ok) throw new Error('下载二维码失败');
  return res.blob();
}

export async function fetchActivityPosterImage(id: string): Promise<Blob> {
  const token = localStorage.getItem('accessToken');
  const res = await fetch(`/api/v1/partner/activity-posters/${id}/image`, {
    headers: {
      Authorization: token ? `Bearer ${token}` : '',
      'X-Client-App': 'PARTNER_H5',
    },
  });
  if (!res.ok) {
    const json = await res.json().catch(() => null) as { message?: string } | null;
    throw new Error(json?.message || '生成活动图失败');
  }
  return res.blob();
}

export function downloadBlob(blob: Blob, fileName: string) {
  const url = URL.createObjectURL(blob);
  const a = document.createElement('a');
  a.href = url;
  a.download = fileName;
  a.click();
  URL.revokeObjectURL(url);
}

export async function getActivityPosterSelection() {
  return request<ActivityPosterSelection>('PARTNER_H5', '/partner/activity-posters/selection', {
    silent: true,
  });
}

export async function saveActivityPosterSelection(posterId: string | null) {
  return request<ActivityPosterSelection>('PARTNER_H5', '/partner/activity-posters/selection', {
    method: 'PUT',
    body: JSON.stringify({ posterId }),
    silent: true,
  });
}

export async function copyActivityCopy(text: string) {
  const value = text.trim();
  if (!value) throw new Error('暂无文案');
  try {
    await navigator.clipboard.writeText(value);
  } catch {
    const ta = document.createElement('textarea');
    ta.value = value;
    document.body.appendChild(ta);
    ta.select();
    document.execCommand('copy');
    document.body.removeChild(ta);
  }
}