from odoo import models, fields, api


class PurchaseRequest(models.Model):
    _name = 'kosbar.purchase.request'
    _description = 'Purchase Request dari Gudang'
    _order = 'id desc'

    name = fields.Char(
        string='Nomor Request',
        required=True,
        copy=False,
        readonly=True,
        default='New',
    )
    user_id = fields.Many2one(
        'res.users',
        string='Diminta Oleh',
        default=lambda self: self.env.user,
        required=True,
    )
    date_required = fields.Date(string='Tanggal Dibutuhkan', default=fields.Date.today())
    state = fields.Selection([
        ('draft', 'Draft'),
        ('submitted', 'Submitted'),
        ('approved', 'Approved / In Progress'),
        ('done', 'Done'),
        ('rejected', 'Rejected'),
    ], string='Status', default='draft', tracking=True)

    line_ids = fields.One2many(
        'kosbar.purchase.request.line',
        'request_id',
        string='Daftar Barang',
    )
    notes = fields.Text(string='Catatan / Keperluan')

    @api.model_create_multi
    def create(self, vals_list):
        for vals in vals_list:
            if vals.get('name', 'New') == 'New':
                seq = self.env['ir.sequence'].next_by_code('kosbar.purchase.request')
                vals['name'] = seq if seq else 'PR/2026/00001'
        return super().create(vals_list)

    def action_submit(self):
        self.write({'state': 'submitted'})

    def action_approve(self):
        self.write({'state': 'approved'})

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

    def action_reject(self):
        self.write({'state': 'rejected'})

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


class PurchaseRequestLine(models.Model):
    _name = 'kosbar.purchase.request.line'
    _description = 'Detail Item Purchase Request'

    request_id = fields.Many2one('kosbar.purchase.request', string='Request Reference', ondelete='cascade')
    
    # Bisa pilih barang existing ATAU buat barang baru langsung
    is_new_product = fields.Boolean(string='Barang Baru?', default=False)
    product_id = fields.Many2one('product.product', string='Produk (Existing)')
    
    # Jika barang baru
    new_product_name = fields.Char(string='Nama Barang Baru')
    categ_id = fields.Many2one('product.category', string='Kategori Barang')
    
    product_qty = fields.Float(string='Jumlah', default=1.0, required=True)
    product_uom = fields.Many2one('uom.uom', string='Satuan', default=lambda self: self.env.ref('uom.product_uom_unit', raise_if_not_found=False))
    price_unit = fields.Float(string='Estimasi Harga Satuan')
    notes = fields.Char(string='Keterangan')