#!/usr/bin/env python
# encoding: utf-8

"""
Producing then compiling templates
"""

import csv
import os
from bopytex.actions import ACTIONS

from bopytex.planner import only_corr_planner, default_planner
from bopytex.scheduler import Scheduler


def build_subject_list_from_infos(infos: list[dict]) -> list[dict]:
    subjects = []
    digit = len(str(len(infos)))
    for i, infos in enumerate(infos):
        subjects.append({"number": str(i + 1).zfill(digit), **infos})
    return subjects


def build_subject_list_from_qty(qty: int) -> list[dict]:
    subjects = []
    digit = len(str(qty))
    for i in range(qty):
        subjects.append({"number": str(i + 1).zfill(digit)})
    return subjects


def build_subjects(students_csv, quantity_subjects):
    if students_csv:
        with open(students_csv, "r") as csv_file:
            infos = csv.DictReader(csv_file)
        return build_subject_list_from_infos(infos)

    return build_subject_list_from_qty(quantity_subjects)


def list_files(dir=".", accept=lambda _: True, reject=lambda _: False):
    tex_files = []
    for file in os.listdir(dir):
        if accept(file) and not reject(file):
            tex_files.append(file)
    return tex_files


def bopytex(
    template: str,
    students_csv: str,
    quantity_subjects: int,
    corr: bool,
    only_corr: bool,
    no_join: bool,
    no_pdf: bool,
    actions: dict = ACTIONS,
):

    if only_corr:
        tex_files = list_files(
            accept=lambda x: x.endswith(".tex"),
            reject=lambda x: x.startswith("tpl_"),
        )
        tasks = only_corr_planner(sources=tex_files, no_pdf=no_pdf, no_join=no_join)
    else:
        subjects = build_subjects(
            students_csv=students_csv, quantity_subjects=quantity_subjects
        )
        tasks = default_planner(template, subjects, corr, no_join, no_pdf)

    scheduler = Scheduler([template])
    scheduler.append(tasks)

    for task in scheduler.backlog:
        pass


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