import re
import unittest
from datetime import datetime
from decimal import Decimal
from pathlib import Path

from borb.pdf.canvas.color.color import HexColor, X11Color
from borb.pdf.canvas.layout.layout_element import Alignment
from borb.pdf.canvas.layout.page_layout.multi_column_layout import SingleColumnLayout
from borb.pdf.canvas.layout.table.fixed_column_width_table import (
    FixedColumnWidthTable as Table,
)
from borb.pdf.canvas.layout.text.paragraph import Paragraph
from borb.pdf.document import Document
from borb.pdf.page.page import Page
from borb.pdf.pdf import PDF
from borb.toolkit.text.font_color_filter import FontColorFilter
from borb.toolkit.text.simple_text_extraction import SimpleTextExtraction

unittest.TestLoader.sortTestMethodsUsing = None


class TestExtractRedText(unittest.TestCase):
    """
    This test attempts to extract the text of each PDF in the corpus
    """

    def __init__(self, methodName="runTest"):
        super().__init__(methodName)
        # find output dir
        p: Path = Path(__file__).parent
        while "output" not in [x.stem for x in p.iterdir() if x.is_dir()]:
            p = p.parent
        p = p / "output"
        self.output_dir = Path(p, Path(__file__).stem.replace(".py", ""))
        if not self.output_dir.exists():
            self.output_dir.mkdir()

    def test_write_document(self):

        # create document
        pdf = Document()

        # add page
        page = Page()
        pdf.append_page(page)

        # add test information
        layout = SingleColumnLayout(page)
        layout.add(
            Table(number_of_columns=2, number_of_rows=3)
            .add(Paragraph("Date", font="Helvetica-Bold"))
            .add(Paragraph(datetime.now().strftime("%d/%m/%Y, %H:%M:%S")))
            .add(Paragraph("Test", font="Helvetica-Bold"))
            .add(Paragraph(Path(__file__).stem))
            .add(Paragraph("Description", font="Helvetica-Bold"))
            .add(
                Paragraph(
                    "This test creates a PDF with an empty Page, and a Paragraph of text. "
                    "A subsequent test will attempt to extract all the text from this PDF."
                )
            )
            .set_padding_on_all_cells(Decimal(2), Decimal(2), Decimal(2), Decimal(2))
        )

        layout.add(
            Paragraph(
                """
            Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. 
            Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. 
            """,
                font_size=Decimal(10),
                vertical_alignment=Alignment.TOP,
                horizontal_alignment=Alignment.LEFT,
                padding_top=Decimal(5),
                padding_right=Decimal(5),
                padding_bottom=Decimal(5),
                padding_left=Decimal(5),
            )
        )
        layout.add(
            Paragraph(
                """
                    Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. 
                    Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
                    """,
                font_color=HexColor("ff0000"),
            )
        )

        # attempt to store PDF
        with open(self.output_dir / "output_001.pdf", "wb") as out_file_handle:
            PDF.dumps(out_file_handle, pdf)

    def test_extract_text_from_document(self):

        doc = None
        l0 = FontColorFilter(X11Color("Red"), Decimal(0.1))
        l1 = SimpleTextExtraction()
        l0.add_listener(l1)

        with open(self.output_dir / "output_001.pdf", "rb") as file_handle:
            doc = PDF.loads(file_handle, [l0])

        page_content: str = l1.get_text_for_page(0)
        print(page_content)

        ground_truth: str = """
        Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. 
        Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.         
        """

        for w in re.split("[^a-zA-Z]+", ground_truth):
            assert w in page_content, "Word '%s' not found in extracted text" % w


if __name__ == "__main__":
    unittest.main()
