# Copyright (C) 2024 by Animath
# SPDX-License-Identifier: GPL-3.0-or-later

from django.db import models
from django.utils.text import format_lazy
from django.utils.translation import gettext_lazy as _
from tfjm.permissions import PermissionType


class Channel(models.Model):
    name = models.CharField(
        max_length=255,
        verbose_name=_("name"),
    )

    read_access = models.PositiveSmallIntegerField(
        verbose_name=_("read permission"),
        choices=PermissionType,
    )

    write_access = models.PositiveSmallIntegerField(
        verbose_name=_("write permission"),
        choices=PermissionType,
    )

    tournament = models.ForeignKey(
        'participation.Tournament',
        on_delete=models.CASCADE,
        blank=True,
        null=True,
        default=None,
        verbose_name=_("tournament"),
        related_name='chat_channels',
        help_text=_("For a permission that concerns a tournament, indicates what is the concerned tournament."),
    )

    pool = models.ForeignKey(
        'participation.Pool',
        on_delete=models.CASCADE,
        blank=True,
        null=True,
        default=None,
        verbose_name=_("pool"),
        related_name='chat_channels',
        help_text=_("For a permission that concerns a pool, indicates what is the concerned pool."),
    )

    team = models.ForeignKey(
        'participation.Team',
        on_delete=models.CASCADE,
        blank=True,
        null=True,
        default=None,
        verbose_name=_("team"),
        related_name='chat_channels',
        help_text=_("For a permission that concerns a team, indicates what is the concerned team."),
    )

    private = models.BooleanField(
        verbose_name=_("private"),
        default=False,
        help_text=_("If checked, only users who have been explicitly added to the channel will be able to access it."),
    )

    invited = models.ManyToManyField(
        'auth.User',
        verbose_name=_("invited users"),
        related_name='+',
        blank=True,
        help_text=_("Extra users who have been invited to the channel, "
                    "in addition to the permitted group of the channel."),
    )

    def __str__(self):
        return format_lazy(_("Channel {name}"), name=self.name)

    class Meta:
        verbose_name = _("channel")
        verbose_name_plural = _("channels")
        ordering = ('name',)


class Message(models.Model):
    channel = models.ForeignKey(
        Channel,
        on_delete=models.CASCADE,
        verbose_name=_("channel"),
        related_name='messages',
    )

    author = models.ForeignKey(
        'auth.User',
        verbose_name=_("author"),
        on_delete=models.SET_NULL,
        null=True,
        related_name='chat_messages',
    )

    created_at = models.DateTimeField(
        verbose_name=_("created at"),
        auto_now_add=True,
    )

    updated_at = models.DateTimeField(
        verbose_name=_("updated at"),
        auto_now=True,
    )

    content = models.TextField(
        verbose_name=_("content"),
    )

    class Meta:
        verbose_name = _("message")
        verbose_name_plural = _("messages")
        ordering = ('created_at',)