from pathlib import Path
import subprocess
import os
import time

# import magick_pdf_to_png
import coordinates_functions as coordf

currfile_dir = Path(__file__).parent
tex_template_path = currfile_dir / "coordinates_booklet_template.tex"
texans_template_path = currfile_dir / "coordinates_booklet_ans_template.tex"
tex_diagram_template_path = currfile_dir / "coordinates_booklet_diagram_template.tex"


def convert_to_pdf(tex_path, outputdir):
    tex_path = Path(tex_path).resolve()
    outputdir = Path(outputdir).resolve()
    # for testing
    # print(f"tex_path: {tex_path}")
    # print(f"outputdir: {outputdir}")
    try:
        # Generate the PDF
        subprocess.run(["latexmk", "-pdf", "-outdir=" + str(outputdir), str(tex_path)], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        # # Clean auxiliary files after successful PDF generation
        subprocess.run(["latexmk", "-c", "-outdir=" + str(outputdir), str(tex_path)], check=True, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        # for hosted remove stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL for debugging any errors
        # Remove the .tex file manually
        # if tex_path.exists():
        #     os.remove(tex_path)
    except subprocess.CalledProcessError as e:
        print(f"Error: {e}")


kv_keys_q = ["points_to_list"]
kv_keys_ans = ["points_to_list", "points_to_plot"]
ky_keys_to_clear = ["points_to_plot"]


def make1_diagram(tex_diagram_template_txt, nump):
    tex_diagram_template_txt_ans = tex_diagram_template_txt
    kv = coordf.get_coordinates_dict(nump)
    for key, value in kv.items():
        # show answers
        if key in kv_keys_ans:
            tex_diagram_template_txt_ans = tex_diagram_template_txt_ans.replace(
                "<<" + key + ">>", value)
    for key, value in kv.items():
        # don't show answers
        if key in kv_keys_q:
            tex_diagram_template_txt = tex_diagram_template_txt.replace(
                "<<" + key + ">>", value)

        if key in ky_keys_to_clear:
            tex_diagram_template_txt = tex_diagram_template_txt.replace(
                "<<" + key + ">>", "")
    return tex_diagram_template_txt, tex_diagram_template_txt_ans


def main():
    numq = input("Enter the number of graphs from 1 to 10 \n")
    if numq.strip().isdigit():
        numq = int(numq)
        if not numq in range(1, 11):
            numq = 2  #  default
    else:
        numq = 2  # default
    #
    nump = input("Enter the number of points to plot from 1 to 20 \n")
    if nump.strip().isdigit():
        nump = int(nump)
        if not nump in range(1, 21):
            nump = 5  #  default
    else:
        nump = 5  # default
    #

    filename = input(
        "Enter the base filename to be added to the prefix coordinates_Bk_: \n"
    )
    if not filename:
        filename = "1"  # "coordinates_Bk_1_q and coordinates_Bk_1_ans as default file"
    # set names of files that are made
    # questions
    tex_output_path = currfile_dir / f"coordinates_Bk_{filename}_q.tex"
    pdf_path = currfile_dir / f"coordinates_Bk_{filename}_q.pdf"

    # answers
    tex_output_path_ans = currfile_dir / f"coordinates_Bk_{filename}_ans.tex"
    pdf_path_ans = currfile_dir / f"coordinates_Bk_{filename}_ans.pdf"

    # Read in the LaTeX template file
    with open(tex_template_path, "r") as infile:
        tex_template_txt = infile.read()
    # Read in the LaTeX template file for answers
    with open(texans_template_path, "r") as infile:
        tex_template_txt_ans = infile.read()
    # Read in the LaTeX diagram template file
    with open(tex_diagram_template_path, "r") as infile:
        tex_diagram_template_txt = infile.read()

    # Generate the <<diagram>> replacement tex
    # diagram_text, diagram_text_ans = make1_diagram(tex_diagram_template_txt)

    # <<diagrams>>
    # generate diagrams text and text for answers
    diagrams_text = ""
    diagrams_text_ans = ""
    # add the headtext; disabled for now using r"" wno needed as numbers in minipage itself
    posttext = r"\pagebreak ~ \newline ~ \newline"
    for i in range(1, numq + 1):
        img_tex, img_tex_ans = make1_diagram(tex_diagram_template_txt, nump)

        diagrams_text += img_tex
        diagrams_text_ans += img_tex_ans
        if i < numq:
            diagrams_text += posttext
            diagrams_text_ans += posttext

    # Replace the <<diagrams>> placeholder in the LaTeX template
    tex_template_txt = tex_template_txt.replace("<<diagrams>>", diagrams_text)
    tex_template_txt_ans = tex_template_txt_ans.replace(
        "<<diagrams>>", diagrams_text_ans)
    # Write the question diagrams tex to an output file
    with open(tex_output_path, "w") as outfile:
        outfile.write(tex_template_txt)
    # Write the answer diagrams tex to an output file
    with open(tex_output_path_ans, "w") as outfile:
        outfile.write(tex_template_txt_ans)

    # Wait for the files to be created
    time.sleep(1)
    # convert to pdf
    convert_to_pdf(tex_output_path, currfile_dir)
    convert_to_pdf(tex_output_path_ans, currfile_dir)

    # Wait for the files to be created
    # time.sleep(1)
    # convert to png
    # magick_pdf_to_png.convert_pdf_to_png(pdf_path, png_path)
    # magick_pdf_to_png.convert_pdf_to_png(pdf_path_ans, png_path_ans)


if __name__ == "__main__":
    print("starting")
    main()
    print("finished")