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

##############################################################################
#
# Gestion scolarite IUT
#
# Copyright (c) 1999 - 2021 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
#
##############################################################################

"""ScoDoc : gestion des fichiers archivés associés aux étudiants
     Il s'agit de fichiers quelconques, généralement utilisés pour conserver
     les dossiers d'admission et autres pièces utiles. 
"""

import sco_utils as scu
from notes_log import log
import ImportScolars
import sco_formsemestre
import sco_groups
import sco_trombino
import sco_excel
import sco_archives
from sco_permissions import ScoEtudAddAnnotations
from sco_exceptions import AccessDenied
from TrivialFormulator import TrivialFormulator


class EtudsArchiver(sco_archives.BaseArchiver):
    def __init__(self):
        sco_archives.BaseArchiver.__init__(self, archive_type="docetuds")


EtudsArchive = EtudsArchiver()


def can_edit_etud_archive(context, authuser):
    """True si l'utilisateur peut modifier les archives etudiantes"""
    return authuser.has_permission(Permission.ScoEtudAddAnnotations, context)


def etud_list_archives_html(context, REQUEST, etudid):
    """HTML snippet listing archives"""
    can_edit = can_edit_etud_archive(context, REQUEST.AUTHENTICATED_USER)
    L = []
    for archive_id in EtudsArchive.list_obj_archives(context, etudid):
        a = {
            "archive_id": archive_id,
            "description": EtudsArchive.get_archive_description(archive_id),
            "date": EtudsArchive.get_archive_date(archive_id),
            "content": EtudsArchive.list_archive(archive_id),
        }
        L.append(a)
    delete_icon = scu.icontag(
        "delete_small_img", title="Supprimer fichier", alt="supprimer"
    )
    delete_disabled_icon = scu.icontag(
        "delete_small_dis_img", title="Suppression non autorisée"
    )
    H = ['<div class="etudarchive"><ul>']
    for a in L:
        archive_name = EtudsArchive.get_archive_name(a["archive_id"])
        H.append(
            """<li><span class ="etudarchive_descr" title="%s">%s</span>"""
            % (a["date"].strftime("%d/%m/%Y %H:%M"), a["description"])
        )
        for filename in a["content"]:
            H.append(
                """<a class="stdlink etudarchive_link" href="etud_get_archived_file?etudid=%s&archive_name=%s&filename=%s">%s</a>"""
                % (etudid, archive_name, filename, filename)
            )
        if not a["content"]:
            H.append("<em>aucun fichier !</em>")
        if can_edit:
            H.append(
                '<span class="deletudarchive"><a class="smallbutton" href="etud_delete_archive?etudid=%s&archive_name=%s">%s</a></span>'
                % (etudid, archive_name, delete_icon)
            )
        else:
            H.append('<span class="deletudarchive">' + delete_disabled_icon + "</span>")
        H.append("</li>")
    if can_edit:
        H.append(
            '<li class="addetudarchive"><a class="stdlink" href="etud_upload_file_form?etudid=%s">ajouter un fichier</a></li>'
            % etudid
        )
    H.append("</ul></div>")
    return "".join(H)


def add_archives_info_to_etud_list(context, etuds):
    """Add key 'etudarchive' describing archive of etuds
    (used to list all archives of a group)
    """
    for etud in etuds:
        l = []
        for archive_id in EtudsArchive.list_obj_archives(context, etud["etudid"]):
            l.append(
                "%s (%s)"
                % (
                    EtudsArchive.get_archive_description(archive_id),
                    EtudsArchive.list_archive(archive_id)[0],
                )
            )
            etud["etudarchive"] = ", ".join(l)


def etud_upload_file_form(context, REQUEST, etudid):
    """Page with a form to choose and upload a file, with a description."""
    # check permission
    if not can_edit_etud_archive(context, REQUEST.AUTHENTICATED_USER):
        raise AccessDenied(
            "opération non autorisée pour %s" % str(REQUEST.AUTHENTICATED_USER)
        )
    etud = context.getEtudInfo(filled=1, REQUEST=REQUEST)[0]
    H = [
        html_sco_header.sco_header(context, 
            REQUEST,
            page_title="Chargement d'un document associé à %(nomprenom)s" % etud,
        ),
        """<h2>Chargement d'un document associé à %(nomprenom)s</h2>                     
         """
        % etud,
        """<p>Le fichier ne doit pas dépasser %sMo.</p>             
         """
        % (scu.CONFIG.ETUD_MAX_FILE_SIZE / (1024 * 1024)),
    ]
    tf = TrivialFormulator(
        REQUEST.URL0,
        REQUEST.form,
        (
            ("etudid", {"default": etudid, "input_type": "hidden"}),
            ("datafile", {"input_type": "file", "title": "Fichier", "size": 30}),
            (
                "description",
                {
                    "input_type": "textarea",
                    "rows": 4,
                    "cols": 77,
                    "title": "Description",
                },
            ),
        ),
        submitlabel="Valider",
        cancelbutton="Annuler",
    )
    if tf[0] == 0:
        return "\n".join(H) + tf[1] + html_sco_header.sco_footer(context, REQUEST)
    elif tf[0] == -1:
        return REQUEST.RESPONSE.redirect(
            context.NotesURL() + "/ficheEtud?etudid=" + etudid
        )
    else:
        data = tf[2]["datafile"].read()
        descr = tf[2]["description"]
        filename = tf[2]["datafile"].filename
        _store_etud_file_to_new_archive(
            context, REQUEST, etudid, data, filename, description=descr
        )
        return REQUEST.RESPONSE.redirect(
            context.NotesURL() + "/ficheEtud?etudid=" + etudid
        )


def _store_etud_file_to_new_archive(
    context, REQUEST, etudid, data, filename, description=""
):
    """Store data to new archive."""
    filesize = len(data)
    if filesize < 10 or filesize > scu.CONFIG.ETUD_MAX_FILE_SIZE:
        return 0, "Fichier image de taille invalide ! (%d)" % filesize
    archive_id = EtudsArchive.create_obj_archive(context, etudid, description)
    EtudsArchive.store(archive_id, filename, data)


def etud_delete_archive(context, REQUEST, etudid, archive_name, dialog_confirmed=False):
    """Delete an archive"""
    # check permission
    if not can_edit_etud_archive(context, REQUEST.AUTHENTICATED_USER):
        raise AccessDenied(
            "opération non autorisée pour %s" % str(REQUEST.AUTHENTICATED_USER)
        )
    etud = context.getEtudInfo(filled=1, REQUEST=REQUEST)[0]
    archive_id = EtudsArchive.get_id_from_name(context, etudid, archive_name)
    dest_url = "ficheEtud?etudid=%s" % etudid
    if not dialog_confirmed:
        return scu.confirm_dialog(
            context,
            """<h2>Confirmer la suppression des fichiers ?</h2>
            <p>Fichier associé le %s à l'étudiant %s</p>
               <p>La suppression sera définitive.</p>"""
            % (
                EtudsArchive.get_archive_date(archive_id).strftime("%d/%m/%Y %H:%M"),
                etud["nomprenom"],
            ),
            dest_url="",
            REQUEST=REQUEST,
            cancel_url=dest_url,
            parameters={"etudid": etudid, "archive_name": archive_name},
        )

    EtudsArchive.delete_archive(archive_id)
    return REQUEST.RESPONSE.redirect(dest_url + "&head_message=Archive%20supprimée")


def etud_get_archived_file(context, REQUEST, etudid, archive_name, filename):
    """Send file to client."""
    return EtudsArchive.get_archived_file(
        context, REQUEST, etudid, archive_name, filename
    )


# --- Upload d'un ensemble de fichiers (pour un groupe d'étudiants)
def etudarchive_generate_excel_sample(context, group_id=None, REQUEST=None):
    """Feuille excel pour import fichiers etudiants (utilisé pour admissions)"""
    fmt = ImportScolars.sco_import_format()
    data = ImportScolars.sco_import_generate_excel_sample(
        fmt,
        context=context,
        group_ids=[group_id],
        only_tables=["identite"],
        exclude_cols=[
            "date_naissance",
            "lieu_naissance",
            "nationalite",
            "statut",
            "photo_filename",
        ],
        extra_cols=["fichier_a_charger"],
        REQUEST=REQUEST,
    )
    return sco_excel.sendExcelFile(REQUEST, data, "ImportFichiersEtudiants.xls")


def etudarchive_import_files_form(context, group_id, REQUEST=None):
    """Formualaire pour importation fichiers d'un groupe"""
    H = [
        html_sco_header.sco_header(context, 
            REQUEST, page_title="Import de fichiers associés aux étudiants"
        ),
        """<h2 class="formsemestre">Téléchargement de fichier associés aux étudiants</h2>
        <p>Les fichiers associés (dossiers d'admission, certificats, ...), de types quelconques (pdf, doc, images)
        sont accessibles aux utilisateurs via la fiche individuelle de l'étudiant.
        </p>
        <p class="warning">Ne pas confondre avec les photos des étudiants, qui se chargent via l'onglet "Photos".</p>
         <p><b>Vous pouvez aussi charger à tout moment de nouveaux fichiers, ou en supprimer, via la fiche de chaque étudiant.</b></p>
         <p class="help">Cette page permet de charger en une seule fois les fichiers de plusieurs étudiants.<br/>
          Il faut d'abord remplir une feuille excel donnant les noms 
          des fichiers (un fichier par étudiant).
         </p>
         <p class="help">Ensuite, réunir vos fichiers dans un fichier zip, puis télécharger 
         simultanément le fichier excel et le fichier zip.
         </p>
        <ol>
        <li><a class="stdlink" href="etudarchive_generate_excel_sample?group_id=%s">
        Obtenir la feuille excel à remplir</a>
        </li>
        <li style="padding-top: 2em;">
         """
        % group_id,
    ]
    F = html_sco_header.sco_footer(context, REQUEST)
    tf = TrivialFormulator(
        REQUEST.URL0,
        REQUEST.form,
        (
            ("xlsfile", {"title": "Fichier Excel:", "input_type": "file", "size": 40}),
            ("zipfile", {"title": "Fichier zip:", "input_type": "file", "size": 40}),
            (
                "description",
                {
                    "input_type": "textarea",
                    "rows": 4,
                    "cols": 77,
                    "title": "Description",
                },
            ),
            ("group_id", {"input_type": "hidden"}),
        ),
    )

    if tf[0] == 0:
        return "\n".join(H) + tf[1] + "</li></ol>" + F
    elif tf[0] == -1:
        # retrouve le semestre à partir du groupe:
        g = sco_groups.get_group(context, group_id)
        return REQUEST.RESPONSE.redirect(
            "formsemestre_status?formsemestre_id=" + g["formsemestre_id"]
        )
    else:
        return etudarchive_import_files(
            context,
            group_id=tf[2]["group_id"],
            xlsfile=tf[2]["xlsfile"],
            zipfile=tf[2]["zipfile"],
            REQUEST=REQUEST,
            description=tf[2]["description"],
        )


def etudarchive_import_files(
    context, group_id=None, xlsfile=None, zipfile=None, REQUEST=None, description=""
):
    def callback(context, etud, data, filename, REQUEST):
        _store_etud_file_to_new_archive(
            context, REQUEST, etud["etudid"], data, filename, description
        )

    filename_title = "fichier_a_charger"
    page_title = "Téléchargement de fichiers associés aux étudiants"
    # Utilise la fontion au depart developpee pour les photos
    r = sco_trombino.zip_excel_import_files(
        context, xlsfile, zipfile, REQUEST, callback, filename_title, page_title
    )
    return r + html_sco_header.sco_footer(context, REQUEST)