<?php

namespace App\Filament\Imports;

use App\Models\Block;
use App\Models\Plant;
use App\Models\Shift;
use Filament\Actions\Imports\Exceptions\RowImportFailedException;
use Filament\Actions\Imports\ImportColumn;
use Filament\Actions\Imports\Importer;
use Filament\Actions\Imports\Models\Import;
use Str;

class ShiftImporter extends Importer
{
    protected static ?string $model = Shift::class;

    public static function getColumns(): array
    {
        return [
        ImportColumn::make('name')
            ->requiredMapping()
            ->exampleHeader('Shift Name')
            ->example('Day')
            ->label('Shift Name')
            ->rules(['required']),
        ImportColumn::make('start_time')
            ->requiredMapping()
            ->exampleHeader('Start Time')
            ->example('08:00:00')
            ->label('Start Time')
            ->rules(['required']),
        ImportColumn::make('duration')
            ->requiredMapping()
            ->numeric()
            ->exampleHeader('Shift Duration')
            ->example('11.30')
            ->label('Shift Duration')
            ->rules(['required']),
        ImportColumn::make('end_time')
            ->requiredMapping()
            ->exampleHeader('End Time')
            ->example('19:30:00')
            ->label('End Time')
            ->rules(['required']),
        ImportColumn::make('block')
            ->requiredMapping()
            ->exampleHeader('Block Name')
            ->example('Block A')
            ->label('Block 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('status')
            ->requiredMapping()
            ->exampleHeader('Active Status')
            ->example('Active')
            ->label('Active Status')
            ->rules(['required']),
        ];
    }

    public function resolveRecord(): ?Shift
    {
        $warnMsg = [];
        $plant = Plant::where('name', $this->data['plant'])->first();
        if (!$plant) {
            $warnMsg[] = "Plant not found";
        }
        $block = Block::where('name', $this->data['block'])->where('plant_id', $plant->id)->first();
        if (!$block) {
            $warnMsg[] = "Block not found";
        }
        if (Str::length($this->data['duration']) < 0 || !is_numeric($this->data['duration'])) {
            $warnMsg[] = "Invalid duration found";
        }
        if (Str::length($this->data['start_time']) < 0) {
            $warnMsg[] = "Invalid start time found";
        }
        if (Str::length($this->data['end_time']) < 0) {
            $warnMsg[] = "Invalid end time found";
        }
        if (Str::length($this->data['status']) < 0 || $this->data['status'] != 'Active') {
            $warnMsg[] = "Invalid shift status found";
        }

        if (!empty($warnMsg)) {
            throw new RowImportFailedException(implode(', ', $warnMsg));
        }

        $shift = Shift::where('name', $this->data['name'])
            ->where('plant_id', $plant->id)
            ->where('block_id', $block->id)
            ->first();

        if ($shift) {
            // Update only if necessary to avoid duplicate key error
            $shift->update([
                'start_time' => $this->data['start_time'],
                'duration' => $this->data['duration'],
                'end_time' => $this->data['end_time'],
                'status' => $this->data['status']
            ]);
            return $shift;
        } else {
            // Safe to create new
            return Shift::create([
                'name' => $this->data['name'],
                'plant_id' => $plant->id,
                'block_id' => $block->id,
                'start_time' => $this->data['start_time'],
                'duration' => $this->data['duration'],
                'end_time' => $this->data['end_time'],
                'status' => $this->data['status']
            ]);
        }
        // return Shift::firstOrNew([
        //     // Update existing records, matching them by `$this->data['column_name']`
        //     'email' => $this->data['email'],
        // ]);

        // return new Shift();
    }

    public static function getCompletedNotificationBody(Import $import): string
    {
        $body = 'Your shift import has completed and ' . number_format($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;
    }
}