# -*- mode: python -*-
# -*- coding: utf-8 -*-

##############################################################################
#
# Gestion scolarite IUT
#
# Copyright (c) 1999 - 2024 Emmanuel Viennet.  All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
#   Emmanuel Viennet      emmanuel.viennet@viennet.net
#
##############################################################################

"""Tableau récapitulatif des notes d'un semestre
"""
import collections
import datetime
import time
from xml.etree import ElementTree

from flask import abort, g, render_template, request, url_for
from flask_login import current_user

from app import log
from app.auth.models import Permission
from app.but import bulletin_but
from app.comp import res_sem
from app.comp.res_common import ResultatsSemestre
from app.comp.res_compat import NotesTableCompat
from app.models import FormSemestre
from app.models.etudiants import Identite

import app.scodoc.sco_utils as scu
from app.scodoc import sco_bulletins_json
from app.scodoc import sco_bulletins_xml
from app.scodoc import sco_cache
from app.scodoc import sco_evaluations
from app.scodoc.sco_exceptions import ScoValueError
from app.scodoc import sco_formsemestre
from app.scodoc import sco_preferences
from app.tables.recap import TableRecap
from app.tables.jury_recap import TableJury


def formsemestre_recapcomplet(
    formsemestre_id=None,
    mode_jury=False,
    tabformat="html",
    xml_with_decisions=False,
    force_publishing=True,
    selected_etudid=None,
):
    """Page récapitulant les notes d'un semestre.
    Grand tableau récapitulatif avec toutes les notes de modules
    pour tous les étudiants, les moyennes par UE et générale,
    trié par moyenne générale décroissante.

    tabformat:
        html : page web
        evals : page web, avec toutes les évaluations dans le tableau
        xls, xlsx: export excel simple
        xlsall : export excel simple, avec toutes les évaluations dans le tableau
        csv : export CSV, avec toutes les évaluations
        xml, json : concaténation de tous les bulletins, au format demandé
        pdf : NON SUPPORTE (car tableau trop grand pour générer un pdf utilisable)

    mode_jury: cache modules, affiche lien saisie decision jury
    xml_with_decisions: publie décisions de jury dans xml et json
    force_publishing: publie les xml et json même si bulletins non publiés (sur la passerelle)
    selected_etudid: etudid sélectionné (pour scroller au bon endroit)
    """
    if not isinstance(formsemestre_id, int):
        abort(404)
    formsemestre = FormSemestre.get_formsemestre(formsemestre_id)
    file_formats = {"csv", "json", "xls", "xlsx", "xlsall", "xml"}
    supported_formats = file_formats | {"html", "evals"}
    if tabformat not in supported_formats:
        raise ScoValueError(f"Format non supporté: {tabformat}")
    is_file = tabformat in file_formats
    mode_jury = int(mode_jury)
    xml_with_decisions = int(xml_with_decisions)
    force_publishing = int(force_publishing)
    filename = scu.sanitize_filename(
        f"""{'jury' if mode_jury else 'recap'
            }{'-evals' if tabformat == 'xlsall' else ''
            }-{formsemestre.titre_num()}-{time.strftime("%Y-%m-%d")}"""
    )
    if is_file:
        return _formsemestre_recapcomplet_to_file(
            formsemestre,
            mode_jury=mode_jury,
            tabformat=tabformat,
            filename=filename,
            xml_with_decisions=xml_with_decisions,
            force_publishing=force_publishing,
        )

    table_html, _, freq_codes_annuels = _formsemestre_recapcomplet_to_html(
        formsemestre,
        filename=filename,
        mode_jury=mode_jury,
        tabformat=tabformat,
        selected_etudid=selected_etudid,
    )

    H = [
        # sco_formsemestre_status.formsemestre_status_head(
        #     formsemestre_id=formsemestre_id
        # ),
    ]
    if len(formsemestre.inscriptions) > 0:
        H.append(
            f"""<form name="f" method="get" action="{request.base_url}">
            <input type="hidden" name="formsemestre_id" value="{formsemestre_id}"></input>
            """
        )
        if mode_jury:
            H.append(
                f'<input type="hidden" name="mode_jury" value="{mode_jury}"></input>'
            )
        H.append(
            '<select name="tabformat" onchange="document.f.submit()" class="noprint">'
        )
        for fmt, label in (
            ("html", "Tableau"),
            ("evals", "Avec toutes les évaluations"),
            ("xlsx", "Excel (non formaté)"),
            ("xlsall", "Excel avec évaluations"),
            ("json", "Bulletins JSON"),
        ):
            if fmt == tabformat:
                selected = " selected"
            else:
                selected = ""
            H.append(f'<option value="{fmt}"{selected}>{label}</option>')
        H.append(
            f"""
            </select>&nbsp;<span class="help">cliquer sur un nom pour afficher son bulletin ou
            <a class="stdlink"
            href="{url_for('notes.formsemestre_bulletins_pdf',
                scodoc_dept=g.scodoc_dept, formsemestre_id=formsemestre_id)
            }">ici avoir le classeur pdf</a>
            """
        )
        if formsemestre.formation.is_apc():
            H.append(
                f"""&nbsp;ou en <a class="stdlink"
            href="{url_for('notes.formsemestre_bulletins_pdf',
                scodoc_dept=g.scodoc_dept, formsemestre_id=formsemestre_id, version="butcourt")
            }">version courte BUT</a>
            """
            )

        H.append(
            """</span>
            </form>
            """
        )

    H.append(table_html)  # La table

    if len(formsemestre.inscriptions) > 0:
        H.append("""<div class="links_under_recap"><ul>""")
        if not mode_jury:
            H.append(
                f"""<li><a class="stdlink" href="{url_for('notes.formsemestre_recapcomplet',
                        scodoc_dept=g.scodoc_dept, formsemestre_id=formsemestre_id, mode_jury=1)
                }">Décisions du jury</a>
                </li>
                """
            )
        if formsemestre.can_edit_jury():
            if mode_jury:
                H.append(
                    f"""<li><a class="stdlink" href="{url_for('notes.formsemestre_validation_auto',
                    scodoc_dept=g.scodoc_dept, formsemestre_id=formsemestre_id)
                    }">Calcul automatique des décisions du jury</a>
                    </li>
                    <li><a class="stdlink" href="{url_for('notes.formsemestre_jury_erase',
                    scodoc_dept=g.scodoc_dept, formsemestre_id=formsemestre_id, only_one_sem=1)
                    }">Effacer <em>toutes</em> les décisions de jury issues de ce semestre</a>
                    </li>
                    """
                )
        if mode_jury:
            H.append(
                f"""<li><a class="stdlink" href="{
                    url_for('notes.formsemestre_lettres_individuelles',
                        scodoc_dept=g.scodoc_dept, formsemestre_id=formsemestre_id, mode_jury=1)
                }">Courriers individuels (classeur pdf)</a>
                </li>
                """
            )
            H.append(
                f"""<li><a class="stdlink" href="{url_for('notes.formsemestre_pvjury_pdf',
                        scodoc_dept=g.scodoc_dept, formsemestre_id=formsemestre_id, mode_jury=1)
                }">PV officiel (pdf)</a>
                </li>
                """
            )
        H.append("</ul></div>")

        if sco_preferences.get_preference("use_ue_coefs", formsemestre_id):
            H.append(
                """
            <p class="infop">utilise les coefficients d'UE pour calculer la moyenne générale.</p>
            """
            )

        if mode_jury and freq_codes_annuels and sum(freq_codes_annuels.values()) > 0:
            nb_etud_avec_decision_annuelle = (
                sum(freq_codes_annuels.values()) - freq_codes_annuels["total"]
            )
            H.append(
                f"""
                <div class="jury_stats">
                    <div><b>Nb d'étudiants avec décision annuelle:</b>
                        {nb_etud_avec_decision_annuelle} / {freq_codes_annuels["total"]}
                    </div>
                """
            )
            if nb_etud_avec_decision_annuelle > 0:
                H.append(
                    """<div><b>Codes annuels octroyés:</b></div>
                    <table class="jury_stats_codes">
                    """
                )
                for code in sorted(freq_codes_annuels.keys()):
                    if code != "total":
                        H.append(
                            f"""<tr>
                            <td>{code}</td>
                            <td style="text-align:right">{freq_codes_annuels[code]}</td>
                            <td style="text-align:right">{
                                (100*freq_codes_annuels[code] / freq_codes_annuels["total"]):2.1f}%
                            </td>
                            </tr>"""
                        )
                H.append("""</table>""")
            H.append("""</div>""")
    # Légende
    H.append(
        """
    <div class="table_recap_caption">
        <div class="title">Codes utilisés dans cette table:</div>
        <div class="captions">
            <div><tt>~</tt></div><div>valeur manquante</div>
            <div><tt>=</tt></div><div>UE dispensée</div>
            <div><tt>nan</tt></div><div>valeur non disponible</div>
            <div>📍</div><div>code jury non enregistré</div>
            <div><span class="ue_hors_parcours">12.34</span></div><div>UE hors parcours</div>
        </div>
    </div>
    """
    )
    # HTML or binary data ?
    if len(H) > 1:
        return render_template(
            "sco_page.j2",
            content="".join(H),
            title=f"{formsemestre.sem_modalite()}: "
            + ("jury" if mode_jury else "moyennes"),
            javascripts=["js/table_recap.js"],
            formsemestre_id=formsemestre_id,
            no_sidebar=True,
        )
    elif len(H) == 1:
        return H[0]
    else:
        return H


def _formsemestre_recapcomplet_to_html(
    formsemestre: FormSemestre,
    tabformat="html",  # "html" or "evals"
    filename: str = "",
    mode_jury=False,  # saisie décisions jury
    selected_etudid=None,
) -> tuple[str, TableRecap, collections.Counter]:
    """Le tableau recap en html"""
    if tabformat not in ("html", "evals"):
        raise ScoValueError("invalid table format")
    res: NotesTableCompat = res_sem.load_formsemestre_results(formsemestre)
    table_html, table, freq_codes_annuels = gen_formsemestre_recapcomplet_html_table(
        formsemestre,
        res,
        include_evaluations=(tabformat == "evals"),
        mode_jury=mode_jury,
        filename=filename,
        selected_etudid=selected_etudid,
    )
    return table_html, table, freq_codes_annuels


def _formsemestre_recapcomplet_to_file(
    formsemestre: FormSemestre,
    tabformat: str = "json",  # xml, xls, xlsall, json
    mode_jury: bool = False,
    filename: str = "",
    xml_nodate=False,  # format XML sans dates (sert pour debug cache: comparaison de XML)
    xml_with_decisions=False,
    force_publishing=True,
):
    """Calcule et renvoie le tableau récapitulatif."""
    if tabformat.startswith("xls"):
        include_evaluations = tabformat == "xlsall"
        res: NotesTableCompat = res_sem.load_formsemestre_results(formsemestre)
        data, filename = gen_formsemestre_recapcomplet_excel(
            res,
            mode_jury=mode_jury,
            include_evaluations=include_evaluations,
            filename=filename,
        )
        mime, suffix = scu.get_mime_suffix("xlsx")
        return scu.send_file(data, filename=filename, mime=mime, suffix=suffix)
    elif tabformat == "xml":
        data = gen_formsemestre_recapcomplet_xml(
            formsemestre.id,
            xml_nodate,
            xml_with_decisions=xml_with_decisions,
            force_publishing=force_publishing,
        )
        return scu.send_file(data, filename=filename, suffix=scu.XML_SUFFIX)
    elif tabformat == "json":
        data = gen_formsemestre_recapcomplet_json(
            formsemestre.id,
            xml_nodate=xml_nodate,
            xml_with_decisions=xml_with_decisions,
            force_publishing=force_publishing,
        )
        return scu.sendJSON(data, filename=filename)

    raise ScoValueError(f"Format demandé invalide: {tabformat}")


def gen_formsemestre_recapcomplet_xml(
    formsemestre_id,
    xml_nodate,
    xml_with_decisions=False,
    force_publishing=True,
) -> str:
    "XML export: liste tous les bulletins XML."
    formsemestre = FormSemestre.get_formsemestre(formsemestre_id)
    nt: NotesTableCompat = res_sem.load_formsemestre_results(formsemestre)
    T = nt.get_table_moyennes_triees()
    if not T:
        return "", "", "xml"

    if xml_nodate:
        docdate = ""
    else:
        docdate = datetime.datetime.now().isoformat()
    doc = ElementTree.Element(
        "recapsemestre", formsemestre_id=str(formsemestre_id), date=docdate
    )
    evals = sco_evaluations.do_evaluation_etat_in_sem(formsemestre)
    doc.append(
        ElementTree.Element(
            "evals_info",
            nb_evals_completes=str(evals["nb_evals_completes"]),
            nb_evals_en_cours=str(evals["nb_evals_en_cours"]),
            nb_evals_vides=str(evals["nb_evals_vides"]),
            date_derniere_note=str(evals["last_modif"]),
        )
    )
    for t in T:
        etudid = t[-1]
        sco_bulletins_xml.make_xml_formsemestre_bulletinetud(
            formsemestre_id,
            etudid,
            doc=doc,
            force_publishing=force_publishing,
            xml_nodate=xml_nodate,
            xml_with_decisions=xml_with_decisions,
        )
    return ElementTree.tostring(doc).decode(scu.SCO_ENCODING)


def gen_formsemestre_recapcomplet_json(
    formsemestre_id,
    xml_nodate=False,
    xml_with_decisions=False,
    force_publishing=True,
) -> dict:
    """JSON export: liste tous les bulletins JSON
    :param xml_nodate(bool): indique la date courante (attribut docdate)
    :param force_publishing: donne les bulletins même si non "publiés sur la passerelle"
    :returns: dict
    """
    formsemestre = FormSemestre.get_formsemestre(formsemestre_id)
    is_apc = formsemestre.formation.is_apc()

    if xml_nodate:
        docdate = ""
    else:
        docdate = datetime.datetime.now().isoformat()
    evals = sco_evaluations.do_evaluation_etat_in_sem(formsemestre)
    js_data = {
        "docdate": docdate,
        "formsemestre_id": formsemestre_id,
        "evals_info": {
            "nb_evals_completes": evals["nb_evals_completes"],
            "nb_evals_en_cours": evals["nb_evals_en_cours"],
            "nb_evals_vides": evals["nb_evals_vides"],
            "date_derniere_note": evals["last_modif"],
        },
        "bulletins": [],
    }
    bulletins = js_data["bulletins"]
    formsemestre = FormSemestre.get_formsemestre(formsemestre_id)
    nt: NotesTableCompat = res_sem.load_formsemestre_results(formsemestre)
    T = nt.get_table_moyennes_triees()
    for t in T:
        etudid = t[-1]
        if is_apc:
            etud = Identite.get_etud(etudid)
            bulletins_sem = bulletin_but.BulletinBUT(formsemestre)
            bul = bulletins_sem.bulletin_etud(etud)
        else:
            bul = sco_bulletins_json.formsemestre_bulletinetud_published_dict(
                formsemestre_id,
                etudid,
                force_publishing=force_publishing,
                xml_with_decisions=xml_with_decisions,
            )
        bulletins.append(bul)
    return js_data


def formsemestres_bulletins(annee_scolaire):
    """Tous les bulletins des semestres de l'année indiquée.
    :param annee_scolaire(int): année de début de l'année scolaire
    :returns: JSON
    """
    js_list = []
    sems = sco_formsemestre.list_formsemestre_by_etape(annee_scolaire=annee_scolaire)
    log(f"formsemestres_bulletins({annee_scolaire}): {len(sems)} sems")
    for sem in sems:
        js_data = gen_formsemestre_recapcomplet_json(
            sem["formsemestre_id"], force_publishing=False
        )
        js_list.append(js_data)

    return scu.sendJSON(js_list)


def gen_formsemestre_recapcomplet_html_table(
    formsemestre: FormSemestre,
    res: NotesTableCompat,
    include_evaluations=False,
    mode_jury=False,
    filename="",
    selected_etudid=None,
) -> tuple[str, TableRecap, collections.Counter]:
    """Construit table recap pour le BUT
    Cache le résultat pour le semestre.
    Note: on cache le HTML et non l'objet Table.

    Si mode_jury, occultera colonnes modules (en js)
    et affiche un lien vers la saisie de la décision de jury

    Return: html (str), table (None sauf en mode jury ou si pas cachée)

    html est une chaine, le <div>...</div> incluant le tableau.
    """
    table = None
    table_html = None
    table_html_cached = None
    cache_class = {
        (True, True): sco_cache.TableJuryWithEvalsCache,
        (True, False): sco_cache.TableJuryCache,
        (False, True): sco_cache.TableRecapWithEvalsCache,
        (False, False): sco_cache.TableRecapCache,
    }[(bool(mode_jury), bool(include_evaluations))]
    if not selected_etudid:
        table_html_cached = cache_class.get(formsemestre.id)
    if table_html_cached is None:
        table = _gen_formsemestre_recapcomplet_table(
            res,
            include_evaluations,
            mode_jury,
            filename,
            selected_etudid=selected_etudid,
        )
        table_html = table.html()
        freq_codes_annuels = (
            table.freq_codes_annuels if hasattr(table, "freq_codes_annuels") else None
        )
        cache_class.set(formsemestre.id, (table_html, freq_codes_annuels))
    else:
        table_html, freq_codes_annuels = table_html_cached

    return table_html, table, freq_codes_annuels


def _gen_formsemestre_recapcomplet_table(
    res: ResultatsSemestre,
    include_email_addresses=False,
    include_evaluations=False,
    mode_jury=False,
    convert_values: bool = True,
    filename: str = "",
    selected_etudid=None,
) -> TableRecap:
    """Construit la table récap."""
    table_class = TableJury if mode_jury else TableRecap
    table = table_class(
        res,
        convert_values=convert_values,
        include_email_addresses=include_email_addresses,
        include_evaluations=include_evaluations,
        mode_jury=mode_jury,
        read_only=not res.formsemestre.can_edit_jury(),
    )

    table.data["filename"] = filename
    table.select_row(selected_etudid)
    return table


def gen_formsemestre_recapcomplet_excel(
    res: NotesTableCompat,
    mode_jury: bool = False,
    include_evaluations=False,
    filename: str = "",
) -> tuple:
    """Génère le tableau recap ou jury en excel (xlsx).
    Utilisé pour menu (export excel), archives et autres besoins particuliers (API).
    Attention: le tableau exporté depuis la page html est celui généré en js par DataTables,
     et non celui-ci.
    """
    # En excel, ajoute les adresses mail, si on a le droit de les voir.
    table = _gen_formsemestre_recapcomplet_table(
        res,
        include_email_addresses=current_user.has_permission(Permission.ViewEtudData),
        include_evaluations=include_evaluations,
        mode_jury=mode_jury,
        convert_values=False,
        filename=filename,
    )

    return table.excel(), filename