import { useState, useCallback } from 'react';
import { useDropzone } from 'react-dropzone';
import { useQueryClient } from '@tanstack/react-query';
import { tracksApi, type TrackMetadata } from '@/services/api/tracks';
import { LIBRARY_KEYS } from '@/features/library/hooks/useMyTracks';
import { logger } from '@/utils/logger';
import { useIsRateLimited } from '@/hooks/useIsRateLimited';
import {
  ACCEPTED_AUDIO_TYPES,
  MAX_FILE_SIZE,
  MAX_RETRY_ATTEMPTS,
  type UploadFormData,
} from './constants';

export interface UseUploadModalProps {
  open: boolean;
  onClose: () => void;
}

export function useUploadModal({ onClose }: UseUploadModalProps) {
  const [file, setFile] = useState<File | null>(null);
  const [uploadProgress, setUploadProgress] = useState(0);
  const [isUploading, setIsUploading] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const [errorCode, setErrorCode] = useState<string | null>(null);
  const [isRetryable, setIsRetryable] = useState(false);
  const [retryCount, setRetryCount] = useState(0);
  const [success, setSuccess] = useState(false);
  const [formData, setFormData] = useState<UploadFormData>({
    file: null,
    title: '',
    artist: '',
    album: '',
    genre: '',
  });
  const [formErrors, setFormErrors] = useState<Partial<Record<keyof UploadFormData, string>>>({});
  const isRateLimited = useIsRateLimited();
  const queryClient = useQueryClient();

  const reset = useCallback(() => {
    setFormData({ file: null, title: '', artist: '', album: '', genre: '' });
    setFormErrors({});
  }, []);

  const handleClose = useCallback(() => {
    if (!isUploading) {
      setFile(null);
      setUploadProgress(0);
      setError(null);
      setErrorCode(null);
      setIsRetryable(false);
      setRetryCount(0);
      setSuccess(false);
      reset();
      onClose();
    }
  }, [isUploading, reset, onClose]);

  const setValue = useCallback((name: keyof UploadFormData, value: UploadFormData[keyof UploadFormData]) => {
    setFormData((prev) => ({ ...prev, [name]: value }));
  }, []);
  const getValues = useCallback(() => formData, [formData]);

  const performUpload = useCallback(
    async (data: UploadFormData, attemptNumber = 1) => {
      if (!data.file) {
        setError('Veuillez sélectionner un fichier');
        setErrorCode(null);
        setIsRetryable(false);
        return;
      }
      setIsUploading(true);
      setError(null);
      setErrorCode(null);
      setIsRetryable(false);
      setSuccess(false);
      setUploadProgress(0);
      try {
        const trackMetadata: TrackMetadata = {
          title: data.title || data.file.name.replace(/\.[^/.]+$/, ''),
          artist: data.artist,
          album: data.album,
          genre: data.genre,
          is_public: false,
        };
        await tracksApi.create(data.file, trackMetadata, (progress) => {
          setUploadProgress(progress);
        });
        setSuccess(true);
        setUploadProgress(100);
        setRetryCount(0);
        queryClient.invalidateQueries({ queryKey: LIBRARY_KEYS.all });
        queryClient.invalidateQueries({ queryKey: ['tracks'] });
        setTimeout(() => handleClose(), 1500);
      } catch (err) {
        let errorMessage = "Erreur lors de l'upload";
        let errorCodeValue: string | null = null;
        let retryable = false;
        if (err instanceof Error) {
          errorMessage = err.message;
          const isNetworkError =
            /network|réseau|timeout|econnaborted|etimedout|se connecter/i.test(errorMessage);
          const isServerError =
            /serveur|server|500|503|502/i.test(errorMessage);
          const isValidationError =
            /format|taille|invalide|trop volumineux|non supporté|400|413|415/i.test(errorMessage);
          if (isNetworkError) {
            errorCodeValue = 'NETWORK';
            retryable = attemptNumber < MAX_RETRY_ATTEMPTS;
          } else if (isServerError) {
            errorCodeValue = 'SERVER';
            retryable = attemptNumber < MAX_RETRY_ATTEMPTS;
          } else if (isValidationError) {
            errorCodeValue = 'VALIDATION';
            retryable = false;
          }
        }
        setError(errorMessage);
        setErrorCode(errorCodeValue);
        setIsRetryable(retryable);
        setUploadProgress(0);
        setRetryCount(attemptNumber);
      } finally {
        setIsUploading(false);
      }
    },
    [queryClient, handleClose],
  );

  const onDrop = useCallback(
    (acceptedFiles: File[]) => {
      const selectedFile = acceptedFiles[0];
      if (selectedFile) {
        setFile(selectedFile);
        setError(null);
        setSuccess(false);
        setValue('file', selectedFile);
        const fileNameWithoutExt = selectedFile.name.replace(/\.[^/.]+$/, '');
        if (!formData.title) setValue('title', fileNameWithoutExt);
      }
    },
    [setValue, formData.title],
  );

  const { getRootProps, getInputProps, isDragActive } = useDropzone({
    onDrop,
    accept: ACCEPTED_AUDIO_TYPES,
    maxSize: MAX_FILE_SIZE,
    multiple: false,
    onError: (err) => setError(`Erreur lors de la sélection du fichier: ${err.message}`),
    onDropRejected: (fileRejections) => {
      const rejection = fileRejections[0];
      if (rejection?.errors[0]?.code === 'file-too-large') {
        setError('Le fichier est trop volumineux (max 100 MB)');
      } else if (rejection?.errors[0]?.code === 'file-invalid-type') {
        setError(
          'Format de fichier non supporté. Formats acceptés: MP3, WAV, OGG, FLAC, M4A, AAC',
        );
      } else {
        setError(
          rejection?.errors[0]?.message || 'Erreur lors de la sélection du fichier',
        );
      }
    },
  });

  const register = (name: keyof UploadFormData) => ({
    value: formData[name] instanceof File ? '' : (formData[name] as string | undefined) || '',
    onChange: (e: React.ChangeEvent<HTMLInputElement>) => {
      setFormData((prev) => ({ ...prev, [name]: e.target.value }));
    },
  });

  const handleSubmit = useCallback(
    (onValid: (data: UploadFormData) => void, onInvalid?: (errors: unknown) => void) =>
      (e: React.FormEvent) => {
        e.preventDefault();
        if (!formData.file) {
          setFormErrors({ file: 'Veuillez sélectionner un fichier' });
          onInvalid?.({ file: { message: 'Veuillez sélectionner un fichier' } });
          return;
        }
        setFormErrors({});
        onValid(formData);
      },
    [formData],
  );

  const onSubmit = useCallback(
    async (data: UploadFormData) => {
      await performUpload(data, 1);
    },
    [performUpload],
  );

  const handleRetry = useCallback(() => {
    performUpload(getValues(), retryCount + 1);
  }, [retryCount, getValues, performUpload]);

  const handleRemoveFile = useCallback(() => {
    setFile(null);
    setError(null);
    setSuccess(false);
    setUploadProgress(0);
    setValue('file', null);
  }, [setValue]);

  return {
    file,
    uploadProgress,
    isUploading,
    error,
    errorCode,
    isRetryable,
    retryCount,
    success,
    formData,
    formErrors: formErrors as Partial<Record<keyof UploadFormData, string>>,
    register,
    handleSubmit,
    onSubmit,
    getValues,
    getRootProps,
    getInputProps,
    isDragActive,
    handleClose,
    handleRetry,
    handleRemoveFile,
    isRateLimited,
  };
}