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class ProgamExportResource(resources.ModelResource):
    # Export fields
    application_pdf_template = i_e_fields.Field(
        column_name='application_pdf_template',
        attribute='application_pdf_template',
        widget=APTFieldWidget()
    )
    offer_letter_template = i_e_fields.Field(
        column_name='offer_letter_template',
        attribute='offer_letter_template',
        widget=OLTFieldWidget()
    )
    
    # Import fields
    eligibility_criteria = i_e_fields.Field(
        column_name='eligibility_criteria',
        attribute='eligibility_criteria'
    )
    degree_type = i_e_fields.Field(
        column_name='degree_type',
        attribute='degree_type'
    )
    
    class Meta:
        model = Program
        # Fields available for export
        fields = (
            'program_type', 'program_code', 'program_name', 'form_title',
            'alternative_program_code', 'application_pdf_template',
            'offer_letter_template', 'collaborating_organization',
            'active_for_applicaton_flag', 'document_submission_flag',
            'active_for_admission_flag', 'show_on_page_flag',
            'serial_number_on_page', 'show_to_fee_wvr_appl_flag',
            'work_exp_check_req', 'mentor_id_req', 'min_work_exp_in_months',
            'hr_cont_req', 'is_eduvanz_emi_enable', 'is_ezcred_emi_enable',
            'is_propelld_emi_enable', 'eduvanz_location', 'propelld',
            'propelld_course_id', 'enable_pre_selection_flag',
            'gq_emi_enable_flag', 'gq_plan_id',
            'current_and_prior_employment_details_flag', 'payu_enable_flag',
            'av_emi_enable_flag', 'av_course_code'
        )
        # Fields available for import
        import_id_fields = ('id',)  # Fields used to identify records during import
        import_fields = ('id', 'program_code', 'program_name', 'eligibility_criteria', 'degree_type')
        export_order = fields

    def before_import_row(self, row, **kwargs):
        """
        Hook to validate or modify data before importing each row.
        """
        # Add custom validation for degree_type
        degree_type = row.get('degree_type')
        valid_types = dict(Program.DEGREE_TYPE_CHOICES).keys()
        if degree_type not in valid_types:
            raise ValueError(f"Invalid degree type: {degree_type}")