# pyrefly: ignore [missing-import]
from odoo import api, fields, models
# pyrefly: ignore [missing-import]
from odoo.exceptions import ValidationError


class EducationHostelBed(models.Model):
    _name = 'education.hostel.bed'
    _description = 'Hostel Bed'
    _order = 'room_id, bed_number'

    room_id = fields.Many2one(
        'education.hostel.room',
        string='Room',
        required=True,
        ondelete='cascade',
        index=True,
    )
    hostel_id = fields.Many2one(
        'education.hostel',
        string='Hostel',
        related='room_id.hostel_id',
        store=True,
        readonly=True,
        index=True,
    )
    floor_id = fields.Many2one(
        'education.hostel.floor',
        string='Floor',
        related='room_id.floor_id',
        store=True,
        readonly=True,
    )
    bed_number = fields.Char(string='Bed Number', required=True)
    code = fields.Char(string='Bed Code', required=True, index=True)
    status = fields.Selection([
        ('available', 'Available'),
        ('reserved', 'Reserved'),
        ('occupied', 'Occupied'),
        ('maintenance', 'Under Maintenance'),
        ('inactive', 'Inactive'),
    ], string='Status', default='available', required=True, tracking=True)
    active = fields.Boolean(default=True)

    company_id = fields.Many2one(
        'res.company',
        string='Company',
        related='room_id.company_id',
        store=True,
        readonly=True,
        index=True,
    )

    @api.constrains('bed_number', 'room_id')
    def _check_bed_number_room(self):
        for rec in self:
            if self.search_count([('bed_number', '=', rec.bed_number), ('room_id', '=', rec.room_id.id), ('id', '!=', rec.id)]):
                raise ValidationError('Bed number must be unique within the room.')

    @api.constrains('code')
    def _check_bed_code(self):
        for rec in self:
            if self.search_count([('code', '=', rec.code), ('id', '!=', rec.id)]):
                raise ValidationError('Bed code must be globally unique.')

    @api.constrains('status')
    def _check_status_vs_allocation(self):
        """Prevent manually clearing 'occupied' status while an active member holds this bed."""
        for rec in self:
            if rec.status != 'occupied':
                # Check if any active member is still using this bed
                active_member = self.env['education.hostel.member'].search([
                    ('bed_id', '=', rec.id),
                    ('status', '=', 'active'),
                ], limit=1)
                if active_member:
                    raise ValidationError(
                        f"Bed '{rec.code}' is currently occupied by student "
                        f"'{active_member.student_id.full_name}'. "
                        "Please exit the allocation before changing bed status."
                    )