import { useState, useEffect, useCallback } from 'react';
import { scanningApi } from '../api/scanning.api';
import type {
  ScanningSession,
  ScanningDevice,
  ScanningResult,
  ScanningFilters,
  ScanningSessionsResponse,
  CreateScanningSessionDto,
  UpdateScanningSessionDto,
  ScanningConfig,
  ScanningTemplate,
} from '../../shared/types/api.types';

// ============================================================================
// Sessions Hooks
// ============================================================================

export function useScanningSessions(filters?: ScanningFilters) {
  const [data, setData] = useState<ScanningSessionsResponse | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const fetch = useCallback(async () => {
    setIsLoading(true);
    setError(null);
    try {
      const response = await scanningApi.getAll(filters);
      setData(response);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Error fetching sessions');
    } finally {
      setIsLoading(false);
    }
  }, [
    filters?.search,
    filters?.page,
    filters?.limit,
    filters?.status,
    filters?.deviceId,
    filters?.startDate,
    filters?.endDate,
  ]);

  useEffect(() => {
    fetch();
  }, [fetch]);

  const create = useCallback(async (dto: CreateScanningSessionDto): Promise<ScanningSession> => {
    const session = await scanningApi.create(dto);
    await fetch();
    return session;
  }, [fetch]);

  const update = useCallback(async (id: string, dto: UpdateScanningSessionDto): Promise<ScanningSession> => {
    const session = await scanningApi.update(id, dto);
    await fetch();
    return session;
  }, [fetch]);

  const remove = useCallback(async (id: string): Promise<void> => {
    await scanningApi.delete(id);
    await fetch();
  }, [fetch]);

  return { data, isLoading, error, refresh: fetch, create, update, remove };
}

export function useScanningSession(id: string) {
  const [data, setData] = useState<ScanningSession | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const fetch = useCallback(async () => {
    if (!id) return;
    setIsLoading(true);
    setError(null);
    try {
      const response = await scanningApi.getById(id);
      setData(response);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Error fetching session');
    } finally {
      setIsLoading(false);
    }
  }, [id]);

  useEffect(() => {
    fetch();
  }, [fetch]);

  const update = useCallback(async (dto: UpdateScanningSessionDto): Promise<ScanningSession> => {
    const session = await scanningApi.update(id, dto);
    setData(session);
    return session;
  }, [id]);

  const start = useCallback(async (): Promise<ScanningSession> => {
    const session = await scanningApi.start(id);
    setData(session);
    return session;
  }, [id]);

  const pause = useCallback(async (): Promise<ScanningSession> => {
    const session = await scanningApi.pause(id);
    setData(session);
    return session;
  }, [id]);

  const resume = useCallback(async (): Promise<ScanningSession> => {
    const session = await scanningApi.resume(id);
    setData(session);
    return session;
  }, [id]);

  const stop = useCallback(async (): Promise<ScanningSession> => {
    const session = await scanningApi.stop(id);
    setData(session);
    return session;
  }, [id]);

  return {
    data,
    isLoading,
    error,
    refresh: fetch,
    update,
    start,
    pause,
    resume,
    stop,
  };
}

// ============================================================================
// Devices Hooks
// ============================================================================

export function useScanningDevices() {
  const [data, setData] = useState<ScanningDevice[] | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const fetch = useCallback(async () => {
    setIsLoading(true);
    setError(null);
    try {
      const response = await scanningApi.getDevices();
      setData(response);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Error fetching devices');
    } finally {
      setIsLoading(false);
    }
  }, []);

  useEffect(() => {
    fetch();
  }, [fetch]);

  const register = useCallback(async (device: Partial<ScanningDevice>): Promise<ScanningDevice> => {
    const registered = await scanningApi.registerDevice(device);
    await fetch();
    return registered;
  }, [fetch]);

  const update = useCallback(async (id: string, device: Partial<ScanningDevice>): Promise<ScanningDevice> => {
    const updated = await scanningApi.updateDevice(id, device);
    await fetch();
    return updated;
  }, [fetch]);

  const remove = useCallback(async (id: string): Promise<void> => {
    await scanningApi.removeDevice(id);
    await fetch();
  }, [fetch]);

  return { data, isLoading, error, refresh: fetch, register, update, remove };
}

export function useScanningDevice(id: string) {
  const [data, setData] = useState<ScanningDevice | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const fetch = useCallback(async () => {
    if (!id) return;
    setIsLoading(true);
    setError(null);
    try {
      const response = await scanningApi.getDevice(id);
      setData(response);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Error fetching device');
    } finally {
      setIsLoading(false);
    }
  }, [id]);

  useEffect(() => {
    fetch();
  }, [fetch]);

  const update = useCallback(async (device: Partial<ScanningDevice>): Promise<ScanningDevice> => {
    const updated = await scanningApi.updateDevice(id, device);
    setData(updated);
    return updated;
  }, [id]);

  return { data, isLoading, error, refresh: fetch, update };
}

// ============================================================================
// Templates Hooks
// ============================================================================

export function useScanningTemplates() {
  const [data, setData] = useState<ScanningTemplate[] | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const fetch = useCallback(async () => {
    setIsLoading(true);
    setError(null);
    try {
      const response = await scanningApi.getTemplates();
      setData(response);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Error fetching templates');
    } finally {
      setIsLoading(false);
    }
  }, []);

  useEffect(() => {
    fetch();
  }, [fetch]);

  const create = useCallback(async (template: Partial<ScanningTemplate>): Promise<ScanningTemplate> => {
    const created = await scanningApi.createTemplate(template);
    await fetch();
    return created;
  }, [fetch]);

  const update = useCallback(async (id: string, template: Partial<ScanningTemplate>): Promise<ScanningTemplate> => {
    const updated = await scanningApi.updateTemplate(id, template);
    await fetch();
    return updated;
  }, [fetch]);

  const remove = useCallback(async (id: string): Promise<void> => {
    await scanningApi.deleteTemplate(id);
    await fetch();
  }, [fetch]);

  return { data, isLoading, error, refresh: fetch, create, update, remove };
}

export function useScanningTemplate(id: string) {
  const [data, setData] = useState<ScanningTemplate | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const fetch = useCallback(async () => {
    if (!id) return;
    setIsLoading(true);
    setError(null);
    try {
      const response = await scanningApi.getTemplate(id);
      setData(response);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Error fetching template');
    } finally {
      setIsLoading(false);
    }
  }, [id]);

  useEffect(() => {
    fetch();
  }, [fetch]);

  const update = useCallback(async (template: Partial<ScanningTemplate>): Promise<ScanningTemplate> => {
    const updated = await scanningApi.updateTemplate(id, template);
    setData(updated);
    return updated;
  }, [id]);

  return { data, isLoading, error, refresh: fetch, update };
}

// ============================================================================
// Results Hooks
// ============================================================================

export function useScanningResults(sessionId: string) {
  const [data, setData] = useState<ScanningResult[] | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const fetch = useCallback(async () => {
    if (!sessionId) return;
    setIsLoading(true);
    setError(null);
    try {
      const response = await scanningApi.getResults(sessionId);
      setData(response);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Error fetching results');
    } finally {
      setIsLoading(false);
    }
  }, [sessionId]);

  useEffect(() => {
    fetch();
  }, [fetch]);

  const exportResults = useCallback(async (format: 'json' | 'csv' | 'pdf'): Promise<Blob> => {
    return scanningApi.exportResults(sessionId, format);
  }, [sessionId]);

  const importData = useCallback(async (file: File): Promise<void> => {
    await scanningApi.importData(file, sessionId);
    await fetch();
  }, [sessionId, fetch]);

  const validateData = useCallback(async (data: unknown, templateId: string): Promise<unknown> => {
    return scanningApi.validateData(data, templateId);
  }, []);

  return { data, isLoading, error, refresh: fetch, exportResults, importData, validateData };
}

// ============================================================================
// Config Hook
// ============================================================================

export function useScanningConfig() {
  const [data, setData] = useState<ScanningConfig | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<string | null>(null);

  const fetch = useCallback(async () => {
    setIsLoading(true);
    setError(null);
    try {
      const response = await scanningApi.getConfig();
      setData(response);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Error fetching config');
    } finally {
      setIsLoading(false);
    }
  }, []);

  useEffect(() => {
    fetch();
  }, [fetch]);

  const update = useCallback(async (config: Partial<ScanningConfig>): Promise<ScanningConfig> => {
    const updated = await scanningApi.updateConfig(config);
    setData(updated);
    return updated;
  }, []);

  return { data, isLoading, error, refresh: fetch, update };
}

// ============================================================================
// Utility Functions (Non-hook async functions)
// ============================================================================

export async function createScanningSession(dto: CreateScanningSessionDto): Promise<ScanningSession> {
  return scanningApi.create(dto);
}

export async function exportScanningResults(
  sessionId: string,
  format: 'json' | 'csv' | 'pdf'
): Promise<Blob> {
  return scanningApi.exportResults(sessionId, format);
}

export async function importScanningData(file: File, sessionId?: string): Promise<void> {
  await scanningApi.importData(file, sessionId);
}

export async function validateScanningData(data: unknown, templateId: string): Promise<unknown> {
  return scanningApi.validateData(data, templateId);
}