import PocketBase from 'pocketbase';
import { AppSettings, DEFAULT_SETTINGS, Collection, DriverLocation } from './types';

const POCKETBASE_URL = process.env.NEXT_PUBLIC_POCKETBASE_URL || 'https://pocketbase-gnqc88suy8fqk6wyryjjdpvl.169.239.180.130.sslip.io';

export const pb = new PocketBase(POCKETBASE_URL);

// Collection names in PocketBase (matching Django table names)
const COLLECTIONS_TABLE = 'driver_list_collection';
const PROBLEMS_TABLE = 'driver_list_collectionproblem';
const LOCATIONS_TABLE = 'driver_locations';

// Auth helpers
export const isAuthenticated = () => pb.authStore.isValid;

export const getCurrentUser = () => pb.authStore.model;

export const logout = () => {
  pb.authStore.clear();
  if (typeof window !== 'undefined') {
    window.location.href = '/login/';
  }
};

export const login = async (email: string, password: string) => {
  // Try 'users' first (PocketBase default), fallback to 'auth_user'
  try {
    return await pb.collection('users').authWithPassword(email, password);
  } catch {
    return await pb.collection('auth_user').authWithPassword(email, password);
  }
};

// Collection data helpers
export const getAssignedCollections = async () => {
  const user = getCurrentUser();
  if (!user) return [];

  const today = new Date();
  today.setHours(0, 0, 0, 0);
  const tomorrow = new Date(today);
  tomorrow.setDate(tomorrow.getDate() + 2);

  const records = await pb.collection(COLLECTIONS_TABLE).getFullList({
    filter: `status = "assigned" && auth_user = "${user.id}" && planned_date <= "${tomorrow.toISOString()}"`,
    expand: 'orders_orderitem,wfdash_suppliers',
    sort: 'wfdash_suppliers.suppliername',
  });

  return records as unknown as Collection[];
};

export const getPendingCollections = async () => {
  const records = await pb.collection(COLLECTIONS_TABLE).getFullList({
    filter: 'status = "pending" || status = "problem"',
    expand: 'orders_orderitem,wfdash_suppliers',
    sort: 'wfdash_suppliers.suppliername',
  });

  return records as unknown as Collection[];
};

export const updateCollectionStatus = async (
  id: string,
  status: string,
  data: Partial<Collection>
) => {
  return await pb.collection(COLLECTIONS_TABLE).update(id, {
    status,
    ...data,
  });
};

export const reportProblem = async (
  collectionId: string,
  problemType: string,
  description: string
) => {
  // Update collection status
  await pb.collection(COLLECTIONS_TABLE).update(collectionId, {
    status: 'problem',
    notes: description,
  });

  // Create problem record
  return await pb.collection(PROBLEMS_TABLE).create({
    driver_list_collection: collectionId,
    problem_type: problemType,
    description,
    reported_at: new Date().toISOString(),
  });
};

// Location tracking
export const saveDriverLocation = async (location: Omit<DriverLocation, 'id'>) => {
  try {
    return await pb.collection(LOCATIONS_TABLE).create(location);
  } catch (err) {
    // If driver_locations table doesn't exist yet, silently fail
    console.warn('Could not save location - table may not exist:', err);
  }
};

// Settings helpers
const SETTINGS_KEY = '1driver_settings';

export const getSettings = (): AppSettings => {
  if (typeof window === 'undefined') return DEFAULT_SETTINGS;
  const saved = localStorage.getItem(SETTINGS_KEY);
  if (saved) {
    try {
      return { ...DEFAULT_SETTINGS, ...JSON.parse(saved) };
    } catch {
      return DEFAULT_SETTINGS;
    }
  }
  return DEFAULT_SETTINGS;
};

export const saveSettings = (settings: Partial<AppSettings>) => {
  if (typeof window === 'undefined') return;
  const current = getSettings();
  const updated = { ...current, ...settings };
  localStorage.setItem(SETTINGS_KEY, JSON.stringify(updated));
  return updated;
};

// Offline queue helpers
const QUEUE_KEY = '1driver_offline_queue';

export interface QueueItem {
  id: string;
  type: 'status_update' | 'problem_report';
  data: Record<string, unknown>;
  timestamp: string;
}

export const addToQueue = (item: Omit<QueueItem, 'id' | 'timestamp'>) => {
  if (typeof window === 'undefined') return;
  const queue = getQueue();
  const newItem: QueueItem = {
    ...item,
    id: crypto.randomUUID(),
    timestamp: new Date().toISOString(),
  };
  queue.push(newItem);
  localStorage.setItem(QUEUE_KEY, JSON.stringify(queue));
};

export const getQueue = (): QueueItem[] => {
  if (typeof window === 'undefined') return [];
  const saved = localStorage.getItem(QUEUE_KEY);
  return saved ? JSON.parse(saved) : [];
};

export const removeFromQueue = (id: string) => {
  if (typeof window === 'undefined') return;
  const queue = getQueue().filter((item) => item.id !== id);
  localStorage.setItem(QUEUE_KEY, JSON.stringify(queue));
};

export const clearQueue = () => {
  if (typeof window === 'undefined') return;
  localStorage.removeItem(QUEUE_KEY);
};