from odoo import fields, models, api, _
from odoo.exceptions import UserError, ValidationError
from datetime import datetime, timedelta, timezone, time
import logging, random, string, requests, math, json, re, qrcode, base64

_logger = logging.getLogger(__name__)

class PartialDeliveryWizard(models.TransientModel):
    _name = 'partial.delivery.wizard'
    _description = 'Partial Delivery Wizard'

    sale_id = fields.Many2one('sale.order')
    picking_ids = fields.Many2many('stock.picking')
    picking_id = fields.Many2one(
        'stock.picking',
        string='Delivery Order',
        domain="[('id','in',picking_ids), ('state', 'not in', ('done', 'cancel')), ('name', 'like', 'BU/PICK/%')]"
    )
    line_ids = fields.One2many('partial.delivery.wizard.line', 'wizard_id')

    # @api.model
    # def default_get(self, fields_list):
    #     res = super().default_get(fields_list)
    #     picking_ids_ctx = self.env.context.get('default_picking_ids')
    #     lines = []
    #     if picking_ids_ctx:
    #         if isinstance(picking_ids_ctx, list) and picking_ids_ctx and isinstance(picking_ids_ctx[0], tuple):
    #             picking_ids = picking_ids_ctx[0][2]
    #         else:
    #             picking_ids = picking_ids_ctx

    #         pickings = self.env['stock.picking'].browse(picking_ids)
    #         moves = pickings.move_ids_without_package.filtered(lambda m: m.reserved_availability > 0)

    #         for move in moves:
    #             lines.append((0, 0, {
    #                 'product_id': move.product_id.id,
    #                 'reserved_qty': move.reserved_availability,
    #                 'move_id': move.id,
    #             }))
    #     res['line_ids'] = lines
    #     return res

    def action_select_all(self):
        if len(self.line_ids) == 0:
            raise UserError(_("Tidak ada produk yang dipilih."))
        for line in self.line_ids:
            line.selected = True
        return {
            'type': 'ir.actions.act_window',
            'res_model': self._name,
            'view_mode': 'form',
            'res_id': self.id,
            'target': 'new',
        }

    def action_unselect_all(self):
        if len(self.line_ids) == 0:
            raise UserError(_("Tidak ada produk yang dipilih."))
        for line in self.line_ids:
            line.selected = False
        return {
            'type': 'ir.actions.act_window',
            'res_model': self._name,
            'view_mode': 'form',
            'res_id': self.id,
            'target': 'new',
        }

    @api.onchange('picking_id')
    def _onchange_picking_id(self):
        """Generate lines whenever picking_id is changed"""
        if not self.picking_id:
            self.line_ids = [(5, 0, 0)]
            return

        if self.line_ids:
            self.line_ids.unlink()

        moves = self.picking_id.move_lines or self.picking_id.move_ids_without_package
        moves = moves.filtered(lambda m: m.product_id and m.reserved_availability > 0)

        if not moves:
            _logger.warning(f"[PartialDeliveryWizard] Tidak ada move line di picking {self.picking_id.name}")
            return

        for move in moves:
            reserved_qty = move.reserved_availability or 0.0
            ordered_qty = move.sale_line_id.product_uom_qty if move.sale_line_id else 0.0

            self.env['partial.delivery.wizard.line'].create({
                'wizard_id': self.id,
                'product_id': move.product_id.id,
                'reserved_qty': reserved_qty,
                # 'selected_qty': reserved_qty,
                'move_id': move.id,
                'sale_line_id': move.sale_line_id.id if move.sale_line_id else False,
            })

            _logger.info(
                f"[PartialDeliveryWizard] ✅ Created line for {move.product_id.display_name} "
                f"(reserved={reserved_qty}, move_id={move.id})"
            )


    def action_confirm_partial_delivery(self):
        self.ensure_one()
        StockPicking = self.env['stock.picking']

        picking = self.picking_id
        if not picking:
            raise UserError(_("Tidak ada picking yang dipilih."))

        if picking.state != "assigned":
            raise UserError(_("Picking harus dalam status Ready (assigned)."))

        lines_by_qty = self.line_ids.filtered(lambda l: l.selected_qty > 0)
        lines_validation = self.line_ids.filtered(lambda l: l.selected_qty > l.reserved_qty)
        lines_by_selected = self.line_ids.filtered(lambda l: l.selected and not l.selected_qty)
        selected_lines = lines_by_qty | lines_by_selected  # gabung dua domain hasil filter

        if lines_validation:
            raise UserError(_("Jumlah yang dipilih melebihi jumlah yang terdapat di DO."))

        if not selected_lines:
            raise UserError(_("Tidak ada produk yang dipilih atau diisi jumlahnya."))

        # 🧠 Cek apakah semua move di DO sudah muncul di wizard dan semua dipilih
        picking_move_ids = picking.move_ids_without_package.ids
        wizard_move_ids = self.line_ids.mapped('move_id').ids

        # Semua move DO muncul di wizard, dan semua baris dipilih
        full_selected = (
            set(picking_move_ids) == set(wizard_move_ids)
            and len(selected_lines) == len(self.line_ids)
            and all(
                (line.selected_qty or line.reserved_qty) >= line.reserved_qty
                for line in selected_lines
            )
        )

        if full_selected:
            # 💡 Gak perlu bikin picking baru, langsung ubah state_reserve
            picking.write({'state_reserve': 'partial'})

            picking.message_post(
                body=f"<b>Full Picking Confirmed</b> via wizard partial delivery oleh {self.env.user.name} (tanpa DO baru)",
                message_type="comment",
                subtype_xmlid="mail.mt_note",
            )

            return {
                "type": "ir.actions.act_window",
                "res_model": "stock.picking",
                "view_mode": "form",
                "res_id": picking.id,
                "target": "current",
                "effect": {
                    "fadeout": "slow",
                    "message": f"✅ Semua produk dari DO ini dikirim penuh — tidak dibuat DO baru.",
                    "type": "rainbow_man",
                },
            }

        # 🧩 Kalau bukan full selected, lanjut bikin DO baru
        new_picking = StockPicking.create({
            'origin': picking.origin,
            'partner_id': picking.partner_id.id,
            'picking_type_id': picking.picking_type_id.id,
            'location_id': picking.location_id.id,
            'location_dest_id': picking.location_dest_id.id,
            'company_id': picking.company_id.id,
            'state_reserve': 'partial',
        })

        for line in selected_lines:
            if line.selected_qty > line.reserved_qty:
                raise UserError(_("Jumlah produk %s yang dipilih melebihi jumlah reserved.") % line.product_id.display_name)

            move = line.move_id
            move._do_unreserve()

            # 🔹 Kalau cuma selected tanpa qty → anggap kirim semua reserved qty
            if line.selected and not line.selected_qty:
                line.selected_qty = line.reserved_qty

            if line.selected_qty > 0:
                if line.selected_qty > move.product_uom_qty:
                    raise UserError(_(
                        f"Qty kirim ({line.selected_qty}) untuk {move.product_id.display_name} melebihi qty move ({move.product_uom_qty})."
                    ))

                if line.selected_qty < move.product_uom_qty:
                    qty_to_keep = move.product_uom_qty - line.selected_qty

                    new_move = move.copy(default={
                        'product_uom_qty': line.selected_qty,
                        'picking_id': new_picking.id,
                        'partial': True,
                    })

                    if move.move_dest_ids:
                        for dest_move in move.move_dest_ids:
                            # dest_move.write({'move_orig_ids': [(4, new_move.id)]})
                            new_move.write({'move_dest_ids': [(4, dest_move.id)]})

                    move.write({'product_uom_qty': qty_to_keep})

                else:
                    move.write({'picking_id': new_picking.id, 'partial': True})

        new_picking.action_confirm()
        new_picking.action_assign()
        picking.action_assign()

        origin_name = picking.name

        existing_siblings = self.env['stock.picking'].search([
            ('name', 'like', f"{origin_name}/%"),
            ('id', '!=', new_picking.id),
        ])

        suffixes = []
        for p in existing_siblings:
            match = re.search(r'/(\d+)$', p.name)
            if match:
                suffixes.append(int(match.group(1)))

        next_suffix = max(suffixes) + 1 if suffixes else 1

        new_picking.name = f"{origin_name}/{next_suffix}"

        if picking.origin:
            sale_order = self.env['sale.order'].search([('name', '=', picking.origin)], limit=1)
            if sale_order:
                sale_order.message_post(
                    body=f"<b>Partial Delivery Created:</b> <a href=# data-oe-model='stock.picking' data-oe-id='{new_picking.id}'>{new_picking.name}</a> "
                        f"oleh {self.env.user.name}",
                    message_type="comment",
                    subtype_xmlid="mail.mt_note",
                )

        new_picking.message_post(
            body=f"<b>Partial Picking created</b> dari {picking.name} oleh {self.env.user.name}",
            message_type="comment",
            subtype_xmlid="mail.mt_note",
        )

        return {
            "type": "ir.actions.act_window",
            "res_model": "stock.picking",
            "view_mode": "form",
            "res_id": new_picking.id,
            "target": "current",
            "effect": {
                "fadeout": "slow",
                "message": f"🚚 Partial Delivery {new_picking.name} berhasil dibuat!",
                "type": "rainbow_man",
            },
        }

class PartialDeliveryWizardLine(models.TransientModel):
    _name = 'partial.delivery.wizard.line'
    _description = 'Partial Delivery Wizard Line'

    wizard_id = fields.Many2one('partial.delivery.wizard')
    product_id = fields.Many2one('product.product', string="Product")
    reserved_qty = fields.Float(string="Reserved Qty")
    selected_qty = fields.Float(string="Send Qty")
    move_id = fields.Many2one('stock.move')
    selected = fields.Boolean(string="Select")
    sale_line_id = fields.Many2one('sale.order.line', string="SO Line", related='move_id.sale_line_id')
    ordered_qty = fields.Float(related='sale_line_id.product_uom_qty', string="Ordered Qty")

    @api.onchange('selected')
    def onchange_selected(self):
        if self.selected:
            self.selected_qty = self.reserved_qty