from odoo import fields, models, api, _
from odoo.exceptions import AccessError, UserError, ValidationError
from datetime import datetime, timedelta
from pytz import timezone

class PurchasePricelist(models.Model):
    _name = 'purchase.pricelist'
    _rec_name = 'product_id'

    name = fields.Char(string='Name', compute="_compute_name")
    product_id = fields.Many2one('product.product', string="Product", required=True)
    vendor_id = fields.Many2one('res.partner', string="Vendor", required=True)
    product_price = fields.Float(string='Human Price', required=True)
    system_price = fields.Float(string='System Price', required=True)
    human_last_update = fields.Datetime(string='Human Update')
    system_last_update = fields.Datetime(string='System Update')

    @api.depends('product_id', 'vendor_id')
    def _compute_name(self):
        self.name = self.vendor_id.name + ', ' + self.product_id.name

    @api.constrains('product_price','system_price','vendor_id','product_id')
    def _contrains_product_price(self):
        current_time = fields.Datetime.now(timezone('Asia/Jakarta')).strftime('%Y-%m-%d %H:%M:%S')
        update_by = self._context.get('update_by')
        if update_by == 'system':
            self.system_last_update = current_time
        else:
            self.human_last_update = current_time