<?php

namespace App\Filament\Imports;

use App\Models\ProductionQuantity;
use Filament\Actions\Imports\ImportColumn;
use Filament\Actions\Imports\Importer;
use Filament\Actions\Imports\Models\Import;
use Illuminate\Database\Eloquent\Model;

class ProductionQuantityImporter extends Importer
{
    protected static ?string $model = ProductionQuantity::class;

    public static function getColumns(): array
    {
        return [
            ImportColumn::make('created_at')
                ->requiredMapping()
                ->exampleHeader('Created DateTime')
                ->example('12-02-2025 15:51:00')
                ->label('Created DateTime')
                ->rules(['required']),
            ImportColumn::make('production_order')
                ->requiredMapping()
                ->exampleHeader('Production Order')
                ->example('1234567')
                ->label('Production Order')
                ->numeric(),
            ImportColumn::make('item')
                ->requiredMapping()
                ->exampleHeader('Item Code')
                ->example('123456')
                ->label('Item Code')
                ->relationship(resolveUsing:'code')
                ->rules(['required']),
            ImportColumn::make('serial_number')
                ->requiredMapping()
                ->exampleHeader('Serial Number')
                ->example('12345678901234')
                ->label('Serial Number')
                ->rules(['required']),
            ImportColumn::make('line')
                ->requiredMapping()
                ->exampleHeader('Line Name')
                ->example('4 inch pump line')
                ->label('Line Name')
                ->relationship(resolveUsing:'name')
                ->rules(['required']),
            ImportColumn::make('shift')
                ->requiredMapping()
                ->exampleHeader('Shift Name')
                ->example('Day')
                ->label('Shift Name')
                ->relationship(resolveUsing:'name')
                ->rules(['required']),
            ImportColumn::make('plant')
                ->requiredMapping()
                ->exampleHeader('Plant Name')
                ->example('Ransar Industries-I')
                ->label('Plant Name')
                ->relationship(resolveUsing:'name')
                ->rules(['required']),
            ImportColumn::make('updated_at')
                ->requiredMapping()
                ->exampleHeader('Updated DateTime')
                ->example('12-02-2025 15:51:00')
                ->label('Updated DateTime')
                ->rules(['required']),
            ImportColumn::make('operator_id')
                ->requiredMapping()
                ->exampleHeader('Operator ID')
                ->example('admin')
                ->label('Operator ID')
                ->rules(['required']),
        ];
    }

    public function resolveRecord(): ?ProductionQuantity
    {
        $plant = \App\Models\Plant::where('name', $this->data['plant'])->first();
        $item = \App\Models\Item::where('code', $this->data['item'])->where('plant_id', $plant->id)->first();
        $line = \App\Models\Line::where('name', $this->data['line'])->where('plant_id', $plant->id)->first();
        $shift = \App\Models\Shift::where('name', $this->data['shift'])->where('plant_id', $plant->id)->first();
        if (!$plant || !$item || !$line || !$shift) {
            // Optionally handle missing plant/item/line/shift
            return null;
        }
        return ProductionQuantity::updateOrCreate([
                'serial_number' => $this->data['serial_number'],
                'plant_id' => $plant->id,
            ],
            [
                'shift_id' => $shift->id,
                'line_id' => $line->id,
                'item_id' => $item->id,
                'production_order' => $this->data['production_order'] ?? null,
                'created_at' => $this->data['created_at'],
                'updated_at' => $this->data['updated_at']
            ]
        );
        // return ProductionQuantity::firstOrNew([
        //     // Update existing records, matching them by `$this->data['column_name']`
        //     'email' => $this->data['email'],
        // ]);

        // return new ProductionQuantity();
    }

    public static function getCompletedNotificationBody(Import $import): string
    {
        $body = 'Your production quantity import has completed and ' . number_format($import->successful_rows) . ' ' . str('row')->plural($import->successful_rows) . ' imported.';

        if ($failedRowsCount = $import->getFailedRowsCount()) {
            $body .= ' ' . number_format($failedRowsCount) . ' ' . str('row')->plural($failedRowsCount) . ' failed to import.';
        }

        return $body;
    }

    public function processRow(array $row): Model
    {
        // Activate import flag
        ProductionQuantity::$importing = true;

        try {
            // Create record with relationships
            $productionQuantity = ProductionQuantity::create([
                'created_at' => $row['created_at'],
                'item_id' => $this->resolveItemId($row['item']),
                'serial_number' => $row['serial_number'],
                'line_id' => $this->resolveLineId($row['line']),
                'shift_id' => $this->resolveShiftId($row['shift']),
                'plant_id' => $this->resolvePlantId($row['plant']),
                'updated_at' => $row['updated_at']
            ]);
        } finally {
            // Always disable flag even if errors occur
            ProductionQuantity::$importing = false;
        }

        return $productionQuantity;
    }

    // Relationship resolvers
    private function resolveItemId(string $code): int
    {
        return \App\Models\Item::where('code', $code)->first()->id;
    }

    private function resolveLineId(string $name): int
    {
        return \App\Models\Line::where('name', $name)->first()->id;
    }

    private function resolveShiftId(string $name): int
    {
        return \App\Models\Shift::where('name', $name)->first()->id;
    }

    private function resolvePlantId(string $name): int
    {
        return \App\Models\Plant::where('name', $name)->first()->id;
    }
}