# -*- coding: utf-8 -*-
from odoo import models, fields, api, _

class GarmentFabricRoll(models.Model):
    _name = 'garment.fabric.roll'
    _inherit = ['mail.thread', 'mail.activity.mixin']
    _description = 'Fabric Roll Inventory Tracking'
    _order = 'name desc'

    name = fields.Char(string='Roll Number', required=True, default=lambda self: _('New'), copy=False, tracking=True)
    product_id = fields.Many2one('product.product', string='Fabric Product', required=True)
    fabric_type_id = fields.Many2one('garment.fabric.type', string='Fabric Structure')
    color_id = fields.Many2one('garment.color', string='Color / Shade')
    shade_lot = fields.Char(string='Shade / Dyeing Lot Number', required=True, index=True, tracking=True)
    barcode = fields.Char(string='Barcode / QR Code', index=True, copy=False)
    
    # Technical Specifications
    gsm = fields.Integer(string='GSM (Actual)', required=True, default=180)
    width = fields.Float(string='Width (Inches)', required=True, default=30.0)
    width_type = fields.Selection([('tube', 'Tubular'), ('open', 'Open Width')], string='Width Type', default='tube')
    yarn_count = fields.Char(string='Yarn Count', default='30s Combed')
    
    # Quantitative Weights (Kg)
    gross_weight = fields.Float(string='Gross Weight (Kg)', required=True, default=25.0)
    tare_weight = fields.Float(string='Tare / Core Weight (Kg)', default=0.8)
    net_weight = fields.Float(string='Initial Net Weight (Kg)', compute='_compute_net_weight', store=True)
    length_meters = fields.Float(string='Fabric Length (Meters)', default=75.0)
    
    # Consumption & Balance
    issued_weight = fields.Float(string='Issued Weight (Kg)', default=0.0)
    scrap_weight = fields.Float(string='End-Bit Scrap (Kg)', default=0.0)
    remaining_weight = fields.Float(string='Remaining Weight (Kg)', compute='_compute_remaining_weight', store=True)
    
    # Origin & Storage
    supplier_id = fields.Many2one('res.partner', string='Fabric Mill / Supplier', domain=[('supplier_rank', '>', 0)])
    purchase_order_id = fields.Many2one('purchase.order', string='Purchase Order Ref')
    date_received = fields.Date(string='Date Received', default=fields.Date.today)
    location_id = fields.Many2one('stock.location', string='Storage Warehouse Location')
    
    # Workflow State
    status = fields.Selection([
        ('received', 'Received / Uninspected'),
        ('inspected', 'Inspected'),
        ('approved', 'Quality Approved (Ready to Cut)'),
        ('issued', 'Partially Issued'),
        ('exhausted', 'Fully Exhausted'),
        ('rejected', 'Quality Rejected (Quarantine)'),
    ], string='Roll Status', default='received', tracking=True, required=True)
    
    # Inspections
    inspection_ids = fields.One2many('garment.fabric.inspection', 'roll_id', string='Fabric Inspections')
    inspection_count = fields.Integer(string='Inspections', compute='_compute_inspection_count')

    @api.model_create_multi
    def create(self, vals_list):
        for vals in vals_list:
            if vals.get('name', _('New')) == _('New'):
                vals['name'] = self.env['ir.sequence'].next_by_code('garment.fabric.roll') or _('ROLL-%s') % fields.Date.today().strftime('%Y%m%d')
            if not vals.get('barcode'):
                vals['barcode'] = vals['name']
        return super().create(vals_list)

    @api.depends('gross_weight', 'tare_weight')
    def _compute_net_weight(self):
        for roll in self:
            roll.net_weight = max(0.0, roll.gross_weight - roll.tare_weight)

    @api.depends('net_weight', 'issued_weight', 'scrap_weight')
    def _compute_remaining_weight(self):
        for roll in self:
            rem = roll.net_weight - roll.issued_weight - roll.scrap_weight
            roll.remaining_weight = max(0.0, round(rem, 2))
            if roll.remaining_weight <= 0.2 and roll.status in ['approved', 'issued']:
                roll.status = 'exhausted'

    @api.depends('inspection_ids')
    def _compute_inspection_count(self):
        for roll in self:
            roll.inspection_count = len(roll.inspection_ids)

    def action_create_inspection(self):
        self.ensure_one()
        insp = self.env['garment.fabric.inspection'].create({
            'roll_id': self.id,
            'target_gsm': self.gsm,
            'target_width': self.width,
            'inspected_meters': min(20.0, self.length_meters),
        })
        return {
            'name': _('Fabric 4-Point Inspection'),
            'type': 'ir.actions.act_window',
            'res_model': 'garment.fabric.inspection',
            'res_id': insp.id,
            'view_mode': 'form',
        }