from odoo import models, fields, api

class ProductTemplate(models.Model):
    _inherit = 'product.template'

    recipe_id = fields.One2many(
        'dine360.recipe', 
        'product_tmpl_id', 
        string='Recipe'
    )
    
    has_recipe = fields.Boolean(
        string='Has Recipe', 
        compute='_compute_has_recipe', 
        store=True
    )

    recipe_cost = fields.Float(
        string='Ingredient Cost', 
        related='recipe_id.total_cost', 
        readonly=True
    )

    profit_margin = fields.Float(
        string='Profit Margin (%)', 
        compute='_compute_profit_margin'
    )

    min_stock_level = fields.Float(
        string='Low Stock Threshold', 
        default=0.0,
        help="Alert will be triggered when stock falls below this level."
    )

    is_low_stock = fields.Boolean(
        string='Is Low Stock', 
        compute='_compute_low_stock'
    )

    def _compute_has_recipe(self):
        for product in self:
            product.has_recipe = bool(product.recipe_id)

    def _compute_profit_margin(self):
        for product in self:
            if product.list_price > 0:
                cost = product.recipe_cost or product.standard_price
                product.profit_margin = ((product.list_price - cost) / product.list_price) * 100
            else:
                product.profit_margin = 0

    @api.depends('qty_available', 'min_stock_level')
    def _compute_low_stock(self):
        for product in self:
            # Only check for physical products (ingredients)
            if product.type == 'product' and product.min_stock_level > 0:
                product.is_low_stock = product.qty_available < product.min_stock_level
            else:
                product.is_low_stock = False


    @api.model
    def get_low_stock_products(self, limit=5):
        """
        Helper method for the dashboard to find low stock products without triggering recursion.
        """
        # Find all physical products or consumables that have a threshold set
        # Using both 'type' and 'detailed_type' for Odoo version compatibility
        domain = ['|', ('type', 'in', ['product', 'consu']), ('detailed_type', 'in', ['product', 'consu']), ('min_stock_level', '>', 0)]
        products = self.search(domain)
        
        # Filter in memory since qty_available is computed
        # For consumables, qty_available is 0, so it will always trigger if min_stock > 0
        low_stock = products.filtered(lambda p: p.qty_available < p.min_stock_level)
        return low_stock[:limit]