from odoo import models, fields, api

class KpiKpi(models.Model):
    _name = 'kpi.kpi'
    _description = 'Employee KPI'
    _inherit = ['portal.mixin', 'mail.thread', 'mail.activity.mixin']

    name = fields.Char(string='Reference', required=True, copy=False, readonly=True, default='New')
    employee_id = fields.Many2one('hr.employee', string='Employee', required=True, tracking=True)
    manager_id = fields.Many2one('hr.employee', string='Manager', tracking=True)
    job_id = fields.Many2one('hr.job', string='Job Position', related='employee_id.job_id', store=True, readonly=True)
    department_id = fields.Many2one('hr.department', string='Department', related='employee_id.department_id', store=True, readonly=True)
    
    period = fields.Selection([
        ('2024', '2024'),
        ('2025', '2025'),
        ('2026', '2026'),
        ('2027', '2027'),
    ], string='Period (Year)', required=True, default=lambda self: str(fields.Date.today().year), tracking=True)

    state = fields.Selection([
        ('draft', 'Draft'),
        ('confirmed', 'Confirmed'),
        ('done', 'Done'),
        ('cancel', 'Cancelled'),
    ], string='Status', default='draft', tracking=True)

    line_ids = fields.One2many('kpi.kpi.line', 'kpi_id', string='KPI Lines')
    total_score = fields.Float(string='Total Score', compute='_compute_total_score', store=True)

    @api.model_create_multi
    def create(self, vals_list):
        for vals in vals_list:
            if vals.get('name', 'New') == 'New':
                employee = self.env['hr.employee'].browse(vals.get('employee_id'))
                year = vals.get('period')
                vals['name'] = f"KPI - {employee.name} - {year}"
        return super(KpiKpi, self).create(vals_list)

    @api.depends('line_ids.final_score')
    def _compute_total_score(self):
        for record in self:
            record.total_score = sum(line.final_score for line in record.line_ids)

    def action_confirm(self):
        self.write({'state': 'confirmed'})

    def action_done(self):
        self.write({'state': 'done'})

    def action_draft(self):
        self.write({'state': 'draft'})