import { useState, useEffect } from 'react';
import { XIcon } from 'lucide-react';
// Static defaults for fields requested to be static. Change these constants to update the values shown.
const DEFAULT_PATIENT_ID = '41334';
const DEFAULT_PHYSICIAN = 'Rajesh Venugopal';
const DEFAULT_FACILITY = 'Multi-Lab Speciality';

interface ReportModalProps {
  isOpen: boolean;
  onClose: () => void;
  onSubmit: (formData: FormData) => void;
  analysisId: string;
  analysisSummaryJson: string;
}


export interface ReportFormData {
  patient_id: string;
  exam_date: string;
  metadata: {
    physician: string;
    facility: string;
    clinical_history?: string;
  };
  notes?: string;
  analysis_id: string;
}


export function ReportModal({ isOpen, onClose, onSubmit, analysisId, analysisSummaryJson }: ReportModalProps) {
  const [formData, setFormData] = useState<ReportFormData>({
    patient_id: DEFAULT_PATIENT_ID,
    exam_date: new Date().toISOString().split('T')[0],
    metadata: {
      physician: DEFAULT_PHYSICIAN,
      facility: DEFAULT_FACILITY,
      clinical_history: '',
    },
    notes: '',
    analysis_id: analysisId,
  });

  // Keep internal form state in sync when the parent passes a new analysisId
  useEffect(() => {
    setFormData(prev => ({ ...prev, analysis_id: analysisId }));
  }, [analysisId]);

  if (!isOpen) return null;

  const handleSubmit = (e: React.FormEvent) => {
    e.preventDefault();

    // Build FormData for FastAPI endpoint
    const payload = new FormData();
    payload.append("patient_id", formData.patient_id);
    payload.append("exam_date", formData.exam_date);
    payload.append("metadata", JSON.stringify(formData.metadata));
    payload.append("notes", formData.notes || "");
    payload.append("analysis_id", formData.analysis_id);
    payload.append("analysis_summary", analysisSummaryJson);

    // Pass the FormData object to the parent onSubmit
    onSubmit(payload);
  };


  const handleChange = (e: React.ChangeEvent<HTMLInputElement | HTMLTextAreaElement>) => {
    const { name, value } = e.target;
    if (name.startsWith('metadata.')) {
      const field = name.split('.')[1];
      setFormData(prev => ({
        ...prev,
        metadata: {
          ...prev.metadata,
          [field]: value,
        },
      }));
    } else {
      setFormData(prev => ({
        ...prev,
        [name]: value,
      }));
    }
  };

  return (
    <div className="fixed inset-0 bg-black bg-opacity-50 z-50 flex items-center justify-center p-4">
      <div className="bg-white rounded-lg shadow-xl max-w-2xl w-full max-h-[90vh] overflow-y-auto">
        <div className="p-6 space-y-6">
          <div className="flex items-center justify-between border-b pb-3">
            <h2 className="text-2xl font-semibold text-gray-900">Generate Medical Report</h2>
            <button
              onClick={onClose}
              className="text-gray-400 hover:text-gray-500"
            >
              <XIcon className="w-6 h-6" />
            </button>
          </div>

          <form onSubmit={handleSubmit} className="space-y-6">
            {/* Patient Information */}
            <div className="space-y-4">
              <h3 className="text-lg font-medium text-gray-900">Patient Information</h3>
              <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                <div>
                  <label htmlFor="patient_id" className="block text-sm font-medium text-gray-700">
                    Patient ID *
                  </label>
                  <input
                    required
                    type="text"
                    name="patient_id"
                    id="patient_id"
                    value={formData.patient_id}
                    onChange={handleChange}
                    readOnly
                    className="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-blue-500 focus:ring-blue-500"
                  />
                </div>
                <div>
                  <label htmlFor="exam_date" className="block text-sm font-medium text-gray-700">
                    Exam Date *
                  </label>
                  <input
                    required
                    type="date"
                    name="exam_date"
                    id="exam_date"
                    value={formData.exam_date}
                    onChange={handleChange}
                    className="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-blue-500 focus:ring-blue-500"
                  />
                </div>
              </div>
            </div>

            {/* Slide Metadata */}
            <div className="space-y-4">
              <h3 className="text-lg font-medium text-gray-900">Slide Metadata</h3>
              <div className="grid grid-cols-1 gap-4 sm:grid-cols-2">
                <div>
                  <label htmlFor="metadata.physician" className="block text-sm font-medium text-gray-700">
                    Physician Name *
                  </label>
                  <input
                    required
                    type="text"
                    name="metadata.physician"
                    id="metadata.physician"
                    value={formData.metadata.physician}
                    onChange={handleChange}
                    readOnly
                    className="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-blue-500 focus:ring-blue-500"
                  />
                </div>
                <div>
                  <label htmlFor="metadata.facility" className="block text-sm font-medium text-gray-700">
                    Facility *
                  </label>
                  <input
                    required
                    type="text"
                    name="metadata.facility"
                    id="metadata.facility"
                    value={formData.metadata.facility}
                    onChange={handleChange}
                    readOnly
                    className="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-blue-500 focus:ring-blue-500"
                  />
                </div>
                
                <div>
                  <label htmlFor="metadata.clinical_history" className="block text-sm font-medium text-gray-700">
                    Clinical History
                  </label>
                  <input
                    type="text"
                    name="metadata.clinical_history"
                    id="metadata.clinical_history"
                    value={formData.metadata.clinical_history}
                    onChange={handleChange}
                    className="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-blue-500 focus:ring-blue-500"
                  />
                </div>
              </div>
            </div>

            {/* Notes */}
            <div className="space-y-4">
              <h3 className="text-lg font-medium text-gray-900">Doctor's Notes</h3>
              <textarea
                name="notes"
                id="notes"
                rows={4}
                value={formData.notes}
                onChange={handleChange}
                placeholder="Add any additional notes or observations..."
                className="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-blue-500 focus:ring-blue-500"
              />
            </div>

            {/* Actions */}
            <div className="flex items-center justify-end space-x-3 pt-4 border-t">
              <button
                type="button"
                onClick={onClose}
                className="px-4 py-2 text-sm font-medium text-gray-700 hover:text-gray-500"
              >
                Cancel
              </button>
              <button
                type="submit"
                className="px-4 py-2 text-sm font-medium text-white bg-blue-600 rounded-md hover:bg-blue-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-blue-500"
              >
                Generate Report
              </button>
            </div>
          </form>
        </div>
      </div>
    </div>
  );
}