from odoo import api, fields, models
from odoo.exceptions import ValidationError


class EducationConfiguration(models.Model):
    _name = 'education.configuration'
    _description = 'Education Configuration'
    _rec_name = 'school_name'

    company_id = fields.Many2one(
        'res.company',
        string='Company',
        required=True,
        default=lambda self: self.env.company,
        index=True,
    )
    school_name = fields.Char(string='School Name', required=True)
    school_code = fields.Char(string='School Code', required=True)
    default_campus_id = fields.Many2one('education.campus', string='Default Campus')
    default_academic_year_id = fields.Many2one('education.academic.year', string='Default Academic Year')
    default_term_id = fields.Many2one('education.academic.term', string='Default Term')
    default_currency_id = fields.Many2one('res.currency', string='Default Currency')
    logo = fields.Binary(string='Logo')
    contact_email = fields.Char(string='Contact Email')
    contact_phone = fields.Char(string='Contact Phone')
    active = fields.Boolean(default=True)

    _sql_constraints = [
        ('uniq_company_config', 'unique(company_id)', 'Only one education configuration can exist per company.'),
    ]

    @api.constrains('default_campus_id', 'company_id')
    def _check_default_campus_in_company(self):
        for rec in self:
            if rec.default_campus_id and rec.default_campus_id.company_id != rec.company_id:
                raise ValidationError('Default campus must belong to the same company.')

    @api.constrains('default_academic_year_id', 'company_id')
    def _check_default_academic_year_in_company(self):
        for rec in self:
            if rec.default_academic_year_id and rec.default_academic_year_id.company_id != rec.company_id:
                raise ValidationError('Default academic year must belong to the same company.')

    @api.constrains('default_term_id', 'company_id')
    def _check_default_term_in_company(self):
        for rec in self:
            if rec.default_term_id and rec.default_term_id.company_id != rec.company_id:
                raise ValidationError('Default term must belong to the same company.')

    @api.model
    def get_default_values(self):
        config = self.search([('company_id', '=', self.env.company.id)], limit=1)
        if config:
            return config
        return self.create({
            'company_id': self.env.company.id,
            'school_name': self.env.company.name,
            'school_code': self.env.company.name[:5].upper(),
        })