import pdfplumber
import csv
import sys

if __name__ == '__main__':
    if len(sys.argv) != 3:
        print("Usage: pdf2csv.py <input.pdf> <output.csv>")
        sys.exit(1)

    input_pdf = sys.argv[1]
    output_csv = sys.argv[2]

    with open(input_pdf, 'rb') as f:
        pdf = pdfplumber.open(f)

        with open(output_csv, 'w', newline='') as csvfile:
            writer = csv.writer(csvfile)
            for page in pdf.pages:
                tables = page.extract_tables()
                for table in tables:
                    flattened_table = [row for row in table]
                    writer.writerows(flattened_table)

        pdf.close()