from bopytex.tasks import Task, activate_corr_on, compile_pdf, generate, join_pdfs


class PlannerMissingOption(Exception):
    pass


def naming_template2source(template: str, metadatas: dict):
    return metadatas["number"] + template[3:]


def naming_corr(source):
    return "corr_" + source


def naming_source2pdf(source):
    return source[:-4] + ".pdf"


def naming_join(template):
    return naming_source2pdf("joined" + template[3:])


def default_planner(
    options: dict,
) -> list[Task]:

    opt = {
        "corr": False,
        "no_join": False,
        "no_pdf": False,
    }
    opt.update(options)

    try:
        template = opt["template"]
        subjects = opt["subjects"]
        corr = opt["corr"]
        no_join = opt["no_join"]
        no_pdf = opt["no_pdf"]
    except KeyError:
        raise PlannerMissingOption("An option is missing")

    tasks = []

    pdfs = []
    corr_pdfs = []

    for subject in subjects:
        source = naming_template2source(template, subject)

        tasks.append(generate(template, subject, source))

        if not no_pdf:
            pdf = naming_source2pdf(source)
            tasks.append(compile_pdf(source, pdf))
            pdfs.append(pdf)

        if corr:
            corr_source = naming_corr(source)
            tasks.append(activate_corr_on(source, corr_source))

            if not no_pdf:
                corr_pdf = naming_source2pdf(corr_source)
                tasks.append(compile_pdf(corr_source, corr_pdf))
                corr_pdfs.append(corr_pdf)

    if not no_join:
        joined = naming_join(template)
        if pdfs:
            tasks.append(join_pdfs(pdfs, joined))

        if corr_pdfs:
            corr_joined = naming_corr(joined)
            tasks.append(join_pdfs(corr_pdfs, corr_joined))

    return tasks


def only_corr_planner(
    options: dict,
) -> list[Task]:
    opt = {
        "no_join": False,
        "no_pdf": False,
    }
    opt.update(options)

    try:
        sources = opt["sources"]
        no_join = opt["no_join"]
        no_pdf = opt["no_pdf"]
    except KeyError:
        raise PlannerMissingOption("An option is missing")

    tasks = []
    corr_pdfs = []

    for source in sources:
        corr_source = naming_corr(source)
        tasks.append(activate_corr_on(source, corr_source))

        if not no_pdf:
            corr_pdf = naming_source2pdf(corr_source)
            tasks.append(compile_pdf(corr_source, corr_pdf))
            corr_pdfs.append(corr_pdf)

    if not no_join:
        joined = "joined.pdf"

        if corr_pdfs:
            corr_joined = naming_corr(joined)
            tasks.append(join_pdfs(corr_pdfs, corr_joined))

    return tasks