import axios from 'axios';

// Cookie-based auth (Google OAuth2 session), so send credentials with each call.
const api = axios.create({ baseURL: '/api/v1', withCredentials: true });

api.interceptors.response.use(
  (r) => r,
  (err) => {
    if (err.response?.status === 401) {
      // Not signed in. Send the user to the public landing page (unless already
      // there) so they can read the features and choose to log in.
      if (window.location.pathname !== '/') window.location.href = '/';
    }
    return Promise.reject(err);
  }
);

// Top-level navigation that starts the Google flow and returns to the app.
export const LOGIN_URL = '/api/v1/auth/login?returnUrl=/app';

export const AppApi = {
  info: () => api.get('/app/info').then((r) => r.data)
};

export const AuthApi = {
  me: () => api.get('/auth/me').then((r) => r.data),
  logout: () => api.post('/auth/logout')
};

export const SyncApi = {
  status: () => api.get('/sync/status').then((r) => r.data),
  full: () => api.post('/sync/full'),
  incremental: () => api.post('/sync/incremental')
};

export const AnalyticsApi = {
  dashboard: () => api.get('/analytics/dashboard').then((r) => r.data),
  health: () => api.get('/analytics/health').then((r) => r.data),
  topSenders: (take = 20) => api.get(`/analytics/top-senders?take=${take}`).then((r) => r.data),
  volume: (days = 90) => api.get(`/analytics/volume?days=${days}`).then((r) => r.data),
  heatmap: () => api.get('/analytics/heatmap').then((r) => r.data),
  categoryHeatmap: () => api.get('/analytics/category-heatmap').then((r) => r.data),
  attachments: () => api.get('/analytics/attachments').then((r) => r.data),
  sidebarCounts: () => api.get('/analytics/sidebar-counts').then((r) => r.data),
  // Large take to retrieve all senders for the volume-tiers page.
  allSenders: () => api.get('/analytics/top-senders?take=5000').then((r) => r.data)
};

export const CleanupApi = {
  preview: (req) => api.post('/cleanup/preview', req).then((r) => r.data),
  execute: (req) => api.post('/cleanup/execute', req).then((r) => r.data)
};

// Bulk actions over an explicit set of email IDs (selection-driven, always confirmed —
// the user already opted in by selecting rows and clicking the action).
// Numeric values must match CleanupActionType in Domain/Enums/Enums.cs (no string
// enum converter is configured on the API, so plain numbers are required here).
const CLEANUP_ACTION = { Archive: 0, Trash: 1, MarkRead: 5, MarkUnread: 6, Star: 7, Unstar: 8 };

export const BulkApi = {
  markRead:   (ids) => CleanupApi.execute({ action: CLEANUP_ACTION.MarkRead,   emailIds: ids, confirmed: true }),
  markUnread: (ids) => CleanupApi.execute({ action: CLEANUP_ACTION.MarkUnread, emailIds: ids, confirmed: true }),
  star:       (ids) => CleanupApi.execute({ action: CLEANUP_ACTION.Star,       emailIds: ids, confirmed: true }),
  unstar:     (ids) => CleanupApi.execute({ action: CLEANUP_ACTION.Unstar,     emailIds: ids, confirmed: true }),
  archive:    (ids) => CleanupApi.execute({ action: CLEANUP_ACTION.Archive,    emailIds: ids, confirmed: true }),
  trash:      (ids) => CleanupApi.execute({ action: CLEANUP_ACTION.Trash,      emailIds: ids, confirmed: true }),
};

export const UnsubscribeApi = {
  detect: () => api.post('/unsubscribe/detect'),
  safeList: () => api.get('/unsubscribe/safe-list').then((r) => r.data),
  process: (req) => api.post('/unsubscribe/process', req).then((r) => r.data)
};

export const LayoutApi = {
  get: () => api.get('/widgetlayout').then((r) => r.data),
  save: (layout) => api.put('/widgetlayout', layout)
};

export const SearchApi = {
  folder: (slug, page = 1, pageSize = 50) =>
    api.post('/search', folderToRequest(slug, page, pageSize)).then((r) => r.data),
  query: (q, page = 1, pageSize = 50) =>
    api.get('/search', { params: { q, page, pageSize } }).then((r) => r.data),
};

function folderToRequest(slug, page, pageSize) {
  const base = { page, pageSize };
  switch (slug) {
    // ── Mailbox ──
    case 'inbox':     return { ...base, isInInbox: true, isTrashed: false };
    case 'allmail':   return { ...base };
    case 'unread':    return { ...base, isUnread: true };
    case 'starred':   return { ...base, isStarred: true };
    case 'sent':      return { ...base, gmailLabel: 'SENT' };
    case 'drafts':    return { ...base, gmailLabel: 'DRAFT' };
    case 'archive':   return { ...base, isInInbox: false, isTrashed: false };
    case 'spam':      return { ...base, gmailLabel: 'SPAM' };
    case 'trash':     return { ...base, isTrashed: true };
    // ── Special filters ──
    case 'large':     return { ...base, minSizeBytes: 5_000_000 };
    case 'old': {
      const d = new Date(); d.setFullYear(d.getFullYear() - 1);
      return { ...base, to: d.toISOString().slice(0, 10) };
    }
    // ── Smart folders ──
    case 'automated':   return { ...base, category: 'Notification' };
    case 'finance':     return { ...base, category: 'Finance' };
    case 'social':      return { ...base, category: 'Social' };
    case 'shopping':    return { ...base, category: 'Shopping' };
    case 'noreply':     return { ...base, query: 'from:noreply' };
    case 'gaming':      return { ...base, category: 'Gaming' };
    case 'sales':       return { ...base, category: 'SeasonalSales' };
    case 'ridesharing': return { ...base, category: 'RideSharing' };
    case 'food':        return { ...base, category: 'FoodDelivery' };
    case 'wellness':      return { ...base, category: 'Wellness' };
    // New categories
    case 'travel':        return { ...base, category: 'Travel' };
    case 'subscriptions': return { ...base, category: 'Subscriptions' };
    case 'parcels':       return { ...base, category: 'Parcels' };
    case 'recruitment':   return { ...base, category: 'Recruitment' };
    case 'events':        return { ...base, category: 'Events' };
    case 'security':      return { ...base, category: 'SecurityAlerts' };
    case 'healthcare':    return { ...base, category: 'Healthcare' };
    case 'education':     return { ...base, category: 'Education' };
    case 'news':          return { ...base, category: 'NewsMedia' };
    case 'property':      return { ...base, category: 'PropertyUtilities' };
    case 'charity':       return { ...base, category: 'Charity' };
    case 'government':    return { ...base, category: 'Government' };
    case 'crypto':        return { ...base, category: 'CryptoInvesting' };
    case 'family':        return { ...base, category: 'FamilySchool' };
    default:              return { ...base };
  }
}

export const EmailApi = {
  get:        (id) => api.get(`/email/${id}`).then((r) => r.data),
  markRead:   (id) => api.post(`/email/${id}/read`),
  markUnread: (id) => api.post(`/email/${id}/unread`),
  star:       (id) => api.post(`/email/${id}/star`),
  unstar:     (id) => api.post(`/email/${id}/unstar`),
  trash:      (id) => api.post(`/email/${id}/trash`),
  untrash:    (id) => api.post(`/email/${id}/untrash`),
  unsubscribe:(id) => api.post(`/email/${id}/unsubscribe`).then((r) => r.data),
};

export const ExportApi = {
  reportUrl: (format) => `/api/v1/export/report?format=${format}`
};

export default api;