import axios, { AxiosInstance } from 'axios'
import { getSocketId } from './websocket'

const apiClient: AxiosInstance = axios.create({
  baseURL: '/api',
  headers: {
    'Content-Type': 'application/json',
  },
})

// Request interceptor - add auth token and socket ID
apiClient.interceptors.request.use(
  (config) => {
    const token = localStorage.getItem('auth_token')
    if (token) {
      config.headers.Authorization = `Bearer ${token}`
    }
    const sid = getSocketId()
    if (sid) {
      config.headers['X-Socket-Id'] = sid
    }
    return config
  },
  (error) => Promise.reject(error)
)

// Response interceptor - handle 401
apiClient.interceptors.response.use(
  (response) => response,
  (error) => {
    if (error.response?.status === 401) {
      localStorage.removeItem('auth_token')
      if (!window.location.pathname.includes('/login') && !window.location.pathname.includes('/register')) {
        window.location.href = '/login'
      }
    }
    if (
      error.response?.status === 403 &&
      (error.response?.data as { code?: string } | undefined)?.code === 'MFA_REQUIRED' &&
      !window.location.pathname.startsWith('/settings')
    ) {
      window.location.href = '/settings?mfa=required'
    }
    return Promise.reject(error)
  }
)

export const authApi = {
  register: (data: { username: string; email: string; password: string; invite_token?: string }) => apiClient.post('/auth/register', data).then(r => r.data),
  validateInvite: (token: string) => apiClient.get(`/auth/invite/${token}`).then(r => r.data),
  login: (data: { email: string; password: string }) => apiClient.post('/auth/login', data).then(r => r.data),
  verifyMfaLogin: (data: { mfa_token: string; code: string }) => apiClient.post('/auth/mfa/verify-login', data).then(r => r.data),
  mfaSetup: () => apiClient.post('/auth/mfa/setup', {}).then(r => r.data),
  mfaEnable: (data: { code: string }) => apiClient.post('/auth/mfa/enable', data).then(r => r.data as { success: boolean; mfa_enabled: boolean; backup_codes?: string[] }),
  mfaDisable: (data: { password: string; code: string }) => apiClient.post('/auth/mfa/disable', data).then(r => r.data),
  me: () => apiClient.get('/auth/me').then(r => r.data),
  updateMapsKey: (key: string | null) => apiClient.put('/auth/me/maps-key', { maps_api_key: key }).then(r => r.data),
  updateApiKeys: (data: Record<string, string | null>) => apiClient.put('/auth/me/api-keys', data).then(r => r.data),
  updateSettings: (data: Record<string, unknown>) => apiClient.put('/auth/me/settings', data).then(r => r.data),
  getSettings: () => apiClient.get('/auth/me/settings').then(r => r.data),
  listUsers: () => apiClient.get('/auth/users').then(r => r.data),
  uploadAvatar: (formData: FormData) => apiClient.post('/auth/avatar', formData, { headers: { 'Content-Type': 'multipart/form-data' } }).then(r => r.data),
  deleteAvatar: () => apiClient.delete('/auth/avatar').then(r => r.data),
  getAppConfig: () => apiClient.get('/auth/app-config').then(r => r.data),
  updateAppSettings: (data: Record<string, unknown>) => apiClient.put('/auth/app-settings', data).then(r => r.data),
  validateKeys: () => apiClient.get('/auth/validate-keys').then(r => r.data),
  travelStats: () => apiClient.get('/auth/travel-stats').then(r => r.data),
  changePassword: (data: { current_password: string; new_password: string }) => apiClient.put('/auth/me/password', data).then(r => r.data),
  deleteOwnAccount: () => apiClient.delete('/auth/me').then(r => r.data),
  demoLogin: () => apiClient.post('/auth/demo-login').then(r => r.data),
  mcpTokens: {
    list: () => apiClient.get('/auth/mcp-tokens').then(r => r.data),
    create: (name: string) => apiClient.post('/auth/mcp-tokens', { name }).then(r => r.data),
    delete: (id: number) => apiClient.delete(`/auth/mcp-tokens/${id}`).then(r => r.data),
  },
}

export const tripsApi = {
  list: (params?: Record<string, unknown>) => apiClient.get('/trips', { params }).then(r => r.data),
  create: (data: Record<string, unknown>) => apiClient.post('/trips', data).then(r => r.data),
  get: (id: number | string) => apiClient.get(`/trips/${id}`).then(r => r.data),
  update: (id: number | string, data: Record<string, unknown>) => apiClient.put(`/trips/${id}`, data).then(r => r.data),
  delete: (id: number | string) => apiClient.delete(`/trips/${id}`).then(r => r.data),
  uploadCover: (id: number | string, formData: FormData) => apiClient.post(`/trips/${id}/cover`, formData, { headers: { 'Content-Type': 'multipart/form-data' } }).then(r => r.data),
  archive: (id: number | string) => apiClient.put(`/trips/${id}`, { is_archived: true }).then(r => r.data),
  unarchive: (id: number | string) => apiClient.put(`/trips/${id}`, { is_archived: false }).then(r => r.data),
  getMembers: (id: number | string) => apiClient.get(`/trips/${id}/members`).then(r => r.data),
  addMember: (id: number | string, identifier: string) => apiClient.post(`/trips/${id}/members`, { identifier }).then(r => r.data),
  removeMember: (id: number | string, userId: number) => apiClient.delete(`/trips/${id}/members/${userId}`).then(r => r.data),
}

export const daysApi = {
  list: (tripId: number | string) => apiClient.get(`/trips/${tripId}/days`).then(r => r.data),
  create: (tripId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/days`, data).then(r => r.data),
  update: (tripId: number | string, dayId: number | string, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/days/${dayId}`, data).then(r => r.data),
  delete: (tripId: number | string, dayId: number | string) => apiClient.delete(`/trips/${tripId}/days/${dayId}`).then(r => r.data),
}

export const placesApi = {
  list: (tripId: number | string, params?: Record<string, unknown>) => apiClient.get(`/trips/${tripId}/places`, { params }).then(r => r.data),
  create: (tripId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/places`, data).then(r => r.data),
  get: (tripId: number | string, id: number | string) => apiClient.get(`/trips/${tripId}/places/${id}`).then(r => r.data),
  update: (tripId: number | string, id: number | string, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/places/${id}`, data).then(r => r.data),
  delete: (tripId: number | string, id: number | string) => apiClient.delete(`/trips/${tripId}/places/${id}`).then(r => r.data),
  searchImage: (tripId: number | string, id: number | string) => apiClient.get(`/trips/${tripId}/places/${id}/image`).then(r => r.data),
  importGpx: (tripId: number | string, file: File) => {
    const fd = new FormData(); fd.append('file', file)
    return apiClient.post(`/trips/${tripId}/places/import/gpx`, fd, { headers: { 'Content-Type': 'multipart/form-data' } }).then(r => r.data)
  },
}

export const assignmentsApi = {
  list: (tripId: number | string, dayId: number | string) => apiClient.get(`/trips/${tripId}/days/${dayId}/assignments`).then(r => r.data),
  create: (tripId: number | string, dayId: number | string, data: { place_id: number | string }) => apiClient.post(`/trips/${tripId}/days/${dayId}/assignments`, data).then(r => r.data),
  delete: (tripId: number | string, dayId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/days/${dayId}/assignments/${id}`).then(r => r.data),
  reorder: (tripId: number | string, dayId: number | string, orderedIds: number[]) => apiClient.put(`/trips/${tripId}/days/${dayId}/assignments/reorder`, { orderedIds }).then(r => r.data),
  move: (tripId: number | string, assignmentId: number, newDayId: number | string, orderIndex: number | null) => apiClient.put(`/trips/${tripId}/assignments/${assignmentId}/move`, { new_day_id: newDayId, order_index: orderIndex }).then(r => r.data),
  update: (tripId: number | string, dayId: number | string, id: number, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/days/${dayId}/assignments/${id}`, data).then(r => r.data),
  getParticipants: (tripId: number | string, id: number) => apiClient.get(`/trips/${tripId}/assignments/${id}/participants`).then(r => r.data),
  setParticipants: (tripId: number | string, id: number, userIds: number[]) => apiClient.put(`/trips/${tripId}/assignments/${id}/participants`, { user_ids: userIds }).then(r => r.data),
  updateTime: (tripId: number | string, id: number, times: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/assignments/${id}/time`, times).then(r => r.data),
}

export const packingApi = {
  list: (tripId: number | string) => apiClient.get(`/trips/${tripId}/packing`).then(r => r.data),
  create: (tripId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/packing`, data).then(r => r.data),
  bulkImport: (tripId: number | string, items: { name: string; category?: string; quantity?: number }[]) => apiClient.post(`/trips/${tripId}/packing/import`, { items }).then(r => r.data),
  update: (tripId: number | string, id: number, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/packing/${id}`, data).then(r => r.data),
  delete: (tripId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/packing/${id}`).then(r => r.data),
  reorder: (tripId: number | string, orderedIds: number[]) => apiClient.put(`/trips/${tripId}/packing/reorder`, { orderedIds }).then(r => r.data),
  getCategoryAssignees: (tripId: number | string) => apiClient.get(`/trips/${tripId}/packing/category-assignees`).then(r => r.data),
  setCategoryAssignees: (tripId: number | string, categoryName: string, userIds: number[]) => apiClient.put(`/trips/${tripId}/packing/category-assignees/${encodeURIComponent(categoryName)}`, { user_ids: userIds }).then(r => r.data),
  applyTemplate: (tripId: number | string, templateId: number) => apiClient.post(`/trips/${tripId}/packing/apply-template/${templateId}`).then(r => r.data),
  listBags: (tripId: number | string) => apiClient.get(`/trips/${tripId}/packing/bags`).then(r => r.data),
  createBag: (tripId: number | string, data: { name: string; color?: string }) => apiClient.post(`/trips/${tripId}/packing/bags`, data).then(r => r.data),
  updateBag: (tripId: number | string, bagId: number, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/packing/bags/${bagId}`, data).then(r => r.data),
  deleteBag: (tripId: number | string, bagId: number) => apiClient.delete(`/trips/${tripId}/packing/bags/${bagId}`).then(r => r.data),
}

export const tagsApi = {
  list: () => apiClient.get('/tags').then(r => r.data),
  create: (data: Record<string, unknown>) => apiClient.post('/tags', data).then(r => r.data),
  update: (id: number, data: Record<string, unknown>) => apiClient.put(`/tags/${id}`, data).then(r => r.data),
  delete: (id: number) => apiClient.delete(`/tags/${id}`).then(r => r.data),
}

export const categoriesApi = {
  list: () => apiClient.get('/categories').then(r => r.data),
  create: (data: Record<string, unknown>) => apiClient.post('/categories', data).then(r => r.data),
  update: (id: number, data: Record<string, unknown>) => apiClient.put(`/categories/${id}`, data).then(r => r.data),
  delete: (id: number) => apiClient.delete(`/categories/${id}`).then(r => r.data),
}

export const adminApi = {
  users: () => apiClient.get('/admin/users').then(r => r.data),
  createUser: (data: Record<string, unknown>) => apiClient.post('/admin/users', data).then(r => r.data),
  updateUser: (id: number, data: Record<string, unknown>) => apiClient.put(`/admin/users/${id}`, data).then(r => r.data),
  deleteUser: (id: number) => apiClient.delete(`/admin/users/${id}`).then(r => r.data),
  stats: () => apiClient.get('/admin/stats').then(r => r.data),
  saveDemoBaseline: () => apiClient.post('/admin/save-demo-baseline').then(r => r.data),
  getOidc: () => apiClient.get('/admin/oidc').then(r => r.data),
  updateOidc: (data: Record<string, unknown>) => apiClient.put('/admin/oidc', data).then(r => r.data),
  addons: () => apiClient.get('/admin/addons').then(r => r.data),
  updateAddon: (id: number | string, data: Record<string, unknown>) => apiClient.put(`/admin/addons/${id}`, data).then(r => r.data),
  checkVersion: () => apiClient.get('/admin/version-check').then(r => r.data),
  installUpdate: () => apiClient.post('/admin/update', {}, { timeout: 300000 }).then(r => r.data),
  getBagTracking: () => apiClient.get('/admin/bag-tracking').then(r => r.data),
  updateBagTracking: (enabled: boolean) => apiClient.put('/admin/bag-tracking', { enabled }).then(r => r.data),
  packingTemplates: () => apiClient.get('/admin/packing-templates').then(r => r.data),
  getPackingTemplate: (id: number) => apiClient.get(`/admin/packing-templates/${id}`).then(r => r.data),
  createPackingTemplate: (data: { name: string }) => apiClient.post('/admin/packing-templates', data).then(r => r.data),
  updatePackingTemplate: (id: number, data: { name: string }) => apiClient.put(`/admin/packing-templates/${id}`, data).then(r => r.data),
  deletePackingTemplate: (id: number) => apiClient.delete(`/admin/packing-templates/${id}`).then(r => r.data),
  addTemplateCategory: (templateId: number, data: { name: string }) => apiClient.post(`/admin/packing-templates/${templateId}/categories`, data).then(r => r.data),
  updateTemplateCategory: (templateId: number, catId: number, data: { name: string }) => apiClient.put(`/admin/packing-templates/${templateId}/categories/${catId}`, data).then(r => r.data),
  deleteTemplateCategory: (templateId: number, catId: number) => apiClient.delete(`/admin/packing-templates/${templateId}/categories/${catId}`).then(r => r.data),
  addTemplateItem: (templateId: number, catId: number, data: { name: string }) => apiClient.post(`/admin/packing-templates/${templateId}/categories/${catId}/items`, data).then(r => r.data),
  updateTemplateItem: (templateId: number, itemId: number, data: { name: string }) => apiClient.put(`/admin/packing-templates/${templateId}/items/${itemId}`, data).then(r => r.data),
  deleteTemplateItem: (templateId: number, itemId: number) => apiClient.delete(`/admin/packing-templates/${templateId}/items/${itemId}`).then(r => r.data),
  listInvites: () => apiClient.get('/admin/invites').then(r => r.data),
  createInvite: (data: { max_uses: number; expires_in_days?: number }) => apiClient.post('/admin/invites', data).then(r => r.data),
  deleteInvite: (id: number) => apiClient.delete(`/admin/invites/${id}`).then(r => r.data),
  auditLog: (params?: { limit?: number; offset?: number }) =>
    apiClient.get('/admin/audit-log', { params }).then(r => r.data),
  mcpTokens: () => apiClient.get('/admin/mcp-tokens').then(r => r.data),
  deleteMcpToken: (id: number) => apiClient.delete(`/admin/mcp-tokens/${id}`).then(r => r.data),
}

export const addonsApi = {
  enabled: () => apiClient.get('/addons').then(r => r.data),
}

export const mapsApi = {
  search: (query: string, lang?: string) => apiClient.post(`/maps/search?lang=${lang || 'en'}`, { query }).then(r => r.data),
  details: (placeId: string, lang?: string) => apiClient.get(`/maps/details/${encodeURIComponent(placeId)}`, { params: { lang } }).then(r => r.data),
  placePhoto: (placeId: string, lat?: number, lng?: number, name?: string) => apiClient.get(`/maps/place-photo/${encodeURIComponent(placeId)}`, { params: { lat, lng, name } }).then(r => r.data),
  reverse: (lat: number, lng: number, lang?: string) => apiClient.get('/maps/reverse', { params: { lat, lng, lang } }).then(r => r.data),
  resolveUrl: (url: string) => apiClient.post('/maps/resolve-url', { url }).then(r => r.data),
}

export const budgetApi = {
  list: (tripId: number | string) => apiClient.get(`/trips/${tripId}/budget`).then(r => r.data),
  create: (tripId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/budget`, data).then(r => r.data),
  update: (tripId: number | string, id: number, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/budget/${id}`, data).then(r => r.data),
  delete: (tripId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/budget/${id}`).then(r => r.data),
  setMembers: (tripId: number | string, id: number, userIds: number[]) => apiClient.put(`/trips/${tripId}/budget/${id}/members`, { user_ids: userIds }).then(r => r.data),
  togglePaid: (tripId: number | string, id: number, userId: number, paid: boolean) => apiClient.put(`/trips/${tripId}/budget/${id}/members/${userId}/paid`, { paid }).then(r => r.data),
  perPersonSummary: (tripId: number | string) => apiClient.get(`/trips/${tripId}/budget/summary/per-person`).then(r => r.data),
  settlement: (tripId: number | string) => apiClient.get(`/trips/${tripId}/budget/settlement`).then(r => r.data),
}

export const filesApi = {
  list: (tripId: number | string, trash?: boolean) => apiClient.get(`/trips/${tripId}/files`, { params: trash ? { trash: 'true' } : {} }).then(r => r.data),
  upload: (tripId: number | string, formData: FormData) => apiClient.post(`/trips/${tripId}/files`, formData, {
    headers: { 'Content-Type': 'multipart/form-data' }
  }).then(r => r.data),
  update: (tripId: number | string, id: number, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/files/${id}`, data).then(r => r.data),
  delete: (tripId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/files/${id}`).then(r => r.data),
  toggleStar: (tripId: number | string, id: number) => apiClient.patch(`/trips/${tripId}/files/${id}/star`).then(r => r.data),
  restore: (tripId: number | string, id: number) => apiClient.post(`/trips/${tripId}/files/${id}/restore`).then(r => r.data),
  permanentDelete: (tripId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/files/${id}/permanent`).then(r => r.data),
  emptyTrash: (tripId: number | string) => apiClient.delete(`/trips/${tripId}/files/trash/empty`).then(r => r.data),
  addLink: (tripId: number | string, fileId: number, data: { reservation_id?: number; assignment_id?: number }) => apiClient.post(`/trips/${tripId}/files/${fileId}/link`, data).then(r => r.data),
  removeLink: (tripId: number | string, fileId: number, linkId: number) => apiClient.delete(`/trips/${tripId}/files/${fileId}/link/${linkId}`).then(r => r.data),
  getLinks: (tripId: number | string, fileId: number) => apiClient.get(`/trips/${tripId}/files/${fileId}/links`).then(r => r.data),
}

export const reservationsApi = {
  list: (tripId: number | string) => apiClient.get(`/trips/${tripId}/reservations`).then(r => r.data),
  create: (tripId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/reservations`, data).then(r => r.data),
  update: (tripId: number | string, id: number, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/reservations/${id}`, data).then(r => r.data),
  delete: (tripId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/reservations/${id}`).then(r => r.data),
  updatePositions: (tripId: number | string, positions: { id: number; day_plan_position: number }[]) => apiClient.put(`/trips/${tripId}/reservations/positions`, { positions }).then(r => r.data),
}

export const weatherApi = {
  get: (lat: number, lng: number, date: string) => apiClient.get('/weather', { params: { lat, lng, date } }).then(r => r.data),
  getDetailed: (lat: number, lng: number, date: string, lang?: string) => apiClient.get('/weather/detailed', { params: { lat, lng, date, lang } }).then(r => r.data),
}

export const settingsApi = {
  get: () => apiClient.get('/settings').then(r => r.data),
  set: (key: string, value: unknown) => apiClient.put('/settings', { key, value }).then(r => r.data),
  setBulk: (settings: Record<string, unknown>) => apiClient.post('/settings/bulk', { settings }).then(r => r.data),
}

export const accommodationsApi = {
  list: (tripId: number | string) => apiClient.get(`/trips/${tripId}/accommodations`).then(r => r.data),
  create: (tripId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/accommodations`, data).then(r => r.data),
  update: (tripId: number | string, id: number, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/accommodations/${id}`, data).then(r => r.data),
  delete: (tripId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/accommodations/${id}`).then(r => r.data),
}

export const dayNotesApi = {
  list: (tripId: number | string, dayId: number | string) => apiClient.get(`/trips/${tripId}/days/${dayId}/notes`).then(r => r.data),
  create: (tripId: number | string, dayId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/days/${dayId}/notes`, data).then(r => r.data),
  update: (tripId: number | string, dayId: number | string, id: number, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/days/${dayId}/notes/${id}`, data).then(r => r.data),
  delete: (tripId: number | string, dayId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/days/${dayId}/notes/${id}`).then(r => r.data),
}

export const collabApi = {
  getNotes: (tripId: number | string) => apiClient.get(`/trips/${tripId}/collab/notes`).then(r => r.data),
  createNote: (tripId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/collab/notes`, data).then(r => r.data),
  updateNote: (tripId: number | string, id: number, data: Record<string, unknown>) => apiClient.put(`/trips/${tripId}/collab/notes/${id}`, data).then(r => r.data),
  deleteNote: (tripId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/collab/notes/${id}`).then(r => r.data),
  uploadNoteFile: (tripId: number | string, noteId: number, formData: FormData) => apiClient.post(`/trips/${tripId}/collab/notes/${noteId}/files`, formData, { headers: { 'Content-Type': 'multipart/form-data' } }).then(r => r.data),
  deleteNoteFile: (tripId: number | string, noteId: number, fileId: number) => apiClient.delete(`/trips/${tripId}/collab/notes/${noteId}/files/${fileId}`).then(r => r.data),
  getPolls: (tripId: number | string) => apiClient.get(`/trips/${tripId}/collab/polls`).then(r => r.data),
  createPoll: (tripId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/collab/polls`, data).then(r => r.data),
  votePoll: (tripId: number | string, id: number, optionIndex: number) => apiClient.post(`/trips/${tripId}/collab/polls/${id}/vote`, { option_index: optionIndex }).then(r => r.data),
  closePoll: (tripId: number | string, id: number) => apiClient.put(`/trips/${tripId}/collab/polls/${id}/close`).then(r => r.data),
  deletePoll: (tripId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/collab/polls/${id}`).then(r => r.data),
  getMessages: (tripId: number | string, before?: string) => apiClient.get(`/trips/${tripId}/collab/messages${before ? `?before=${before}` : ''}`).then(r => r.data),
  sendMessage: (tripId: number | string, data: Record<string, unknown>) => apiClient.post(`/trips/${tripId}/collab/messages`, data).then(r => r.data),
  deleteMessage: (tripId: number | string, id: number) => apiClient.delete(`/trips/${tripId}/collab/messages/${id}`).then(r => r.data),
  reactMessage: (tripId: number | string, id: number, emoji: string) => apiClient.post(`/trips/${tripId}/collab/messages/${id}/react`, { emoji }).then(r => r.data),
  linkPreview: (tripId: number | string, url: string) => apiClient.get(`/trips/${tripId}/collab/link-preview?url=${encodeURIComponent(url)}`).then(r => r.data),
}

export const backupApi = {
  list: () => apiClient.get('/backup/list').then(r => r.data),
  create: () => apiClient.post('/backup/create').then(r => r.data),
  download: async (filename: string): Promise<void> => {
    const token = localStorage.getItem('auth_token')
    const res = await fetch(`/api/backup/download/${filename}`, {
      headers: { Authorization: `Bearer ${token}` },
    })
    if (!res.ok) throw new Error('Download failed')
    const blob = await res.blob()
    const url = URL.createObjectURL(blob)
    const a = document.createElement('a')
    a.href = url
    a.download = filename
    a.click()
    URL.revokeObjectURL(url)
  },
  delete: (filename: string) => apiClient.delete(`/backup/${filename}`).then(r => r.data),
  restore: (filename: string) => apiClient.post(`/backup/restore/${filename}`).then(r => r.data),
  uploadRestore: (file: File) => {
    const form = new FormData()
    form.append('backup', file)
    return apiClient.post('/backup/upload-restore', form, { headers: { 'Content-Type': 'multipart/form-data' } }).then(r => r.data)
  },
  getAutoSettings: () => apiClient.get('/backup/auto-settings').then(r => r.data),
  setAutoSettings: (settings: Record<string, unknown>) => apiClient.put('/backup/auto-settings', settings).then(r => r.data),
}

export const shareApi = {
  getLink: (tripId: number | string) => apiClient.get(`/trips/${tripId}/share-link`).then(r => r.data),
  createLink: (tripId: number | string, perms?: Record<string, boolean>) => apiClient.post(`/trips/${tripId}/share-link`, perms || {}).then(r => r.data),
  deleteLink: (tripId: number | string) => apiClient.delete(`/trips/${tripId}/share-link`).then(r => r.data),
  getSharedTrip: (token: string) => apiClient.get(`/shared/${token}`).then(r => r.data),
}

export const notificationsApi = {
  getPreferences: () => apiClient.get('/notifications/preferences').then(r => r.data),
  updatePreferences: (prefs: Record<string, boolean>) => apiClient.put('/notifications/preferences', prefs).then(r => r.data),
  testSmtp: (email?: string) => apiClient.post('/notifications/test-smtp', { email }).then(r => r.data),
}

export default apiClient
