<?php

namespace App\Filament\Imports;

use App\Models\CheckPointName;
use App\Models\GuardName;
use App\Models\GuardPatrolEntry;
use App\Models\Plant;
use Carbon\Carbon;
use Filament\Actions\Imports\Exceptions\RowImportFailedException;
use Filament\Actions\Imports\ImportColumn;
use Filament\Actions\Imports\Importer;
use Filament\Actions\Imports\Models\Import;
use Filament\Facades\Filament;
use Str;

class GuardPatrolEntryImporter extends Importer
{
    protected static ?string $model = GuardPatrolEntry::class;

    public static function getColumns(): array
    {
        return [
            ImportColumn::make('plant')
                ->requiredMapping()
                ->exampleHeader('Plant Code')
                ->example('1000')
                ->label('Plant Code')
                ->relationship(resolveUsing: 'code')
                ->rules(['required']),
            ImportColumn::make('guardNames')
                ->requiredMapping()
                ->exampleHeader('Guard Name')
                ->example('ARUMUGAM - HG')
                ->label('Guard Name')
                ->relationship(resolveUsing: 'name')
                ->rules(['required']),
            ImportColumn::make('checkPointNames')
                ->requiredMapping()
                ->exampleHeader('Check Point Name')
                ->example('STP BACKSIDE')
                ->label('Check Point Name')
                ->relationship(resolveUsing: 'name')
                ->rules(['required']),
            // ImportColumn::make('reader_code')
            //     ->requiredMapping()
            //     ->exampleHeader('Reader Code')
            //     ->example('0C03-25010112')
            //     ->label('Reader Code'),
            ImportColumn::make('patrol_time')
                ->requiredMapping()
                ->exampleHeader('Patrol Time')
                ->example('01-01-2025 08:00:00')
                ->label('Patrol Time')
                ->rules(['required']),
            // ImportColumn::make('created_by')
            //     ->requiredMapping()
            //     ->exampleHeader('Created By')
            //     ->example(Filament::auth()->user()->name ?? 'Admin')
            //     ->label('Created By')
            //     ->rules(['required']),
            // ImportColumn::make('updated_by')
            //     ->requiredMapping()
            //     ->rules(['required']),
        ];
    }

    public function resolveRecord(): ?GuardPatrolEntry
    {
        $warnMsg = [];
        $plantCod = $this->data['plant'];
        $plant = null;
        $guardNames = null;
        $checkPointNames = null;
        $patrolDateTime = null; // $fdateTime = null;

        if (Str::length($plantCod) < 4 || ! is_numeric($plantCod) || ! preg_match('/^[1-9]\d{3,}$/', $plantCod)) {
            $warnMsg[] = 'Invalid plant code found';
        } else {
            $plant = Plant::where('code', $plantCod)->first();
            if (! $plant) {
                $warnMsg[] = 'Plant not found'; // '" . $plantCod . "'
            } else {
                $guardNames = GuardName::where('plant_id', $plant->id)->where('name', $this->data['guardNames'])->first();
                if (! $guardNames) {
                    $warnMsg[] = 'Guard name not found';
                } else {
                    $checkPointNames = CheckPointName::where('plant_id', $plant->id)->where('name', $this->data['checkPointNames'])->first();
                    if (! $checkPointNames) {
                        $warnMsg[] = 'Check point name not found';
                    } else {
                        $patrolTime = $this->data['patrol_time']; // $fromDate = $this->data['from_datetime'];
                        $formats = ['d-m-Y H:i', 'd-m-Y H:i:s']; // '07-05-2025 08:00' or '07-05-2025 08:00:00'

                        foreach ($formats as $format) {
                            try {
                                $patrolDateTime = Carbon::createFromFormat($format, $patrolTime);
                                break;
                            } catch (\Exception $e) {
                                // Optionally collect warning messages
                                // $warnMsg[] = "Date format mismatch with format: $format";
                            }
                        }

                        if (! isset($patrolDateTime)) {
                            // throw new \Exception('Invalid date time format');
                            $warnMsg[] = "Invalid 'Patrol DateTime' format. Expected DD-MM-YYYY HH:MM:SS";
                        } else {
                            $guardEntryFound = GuardPatrolEntry::where('plant_id', $plant->id)->where('guard_name_id', $guardNames->id)->where('check_point_name_id', $checkPointNames->id)->where('patrol_time', $patrolDateTime->format('Y-m-d H:i:s'))->first();
                            if ($guardEntryFound) {
                                $warnMsg[] = 'Duplicate guard patrol entry found';
                            }
                        }
                    }
                }
            }
        }

        $createdBy = Filament::auth()->user()->name; // ?? 'Admin'
        if (! $createdBy) {
            $warnMsg[] = 'Invalid created by name found';
        }

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

        GuardPatrolEntry::updateOrCreate([
            'plant_id' => $plant->id,
            'guard_name_id' => $guardNames->id,
            'check_point_name_id' => $checkPointNames->id,
            'patrol_time' => $patrolDateTime->format('Y-m-d H:i:s'),
        ],
            [
                'reader_code' => null,
                'created_by' => $createdBy,
                'updated_by' => $createdBy,
            ]
        );

        return null;
        // // return GuardPatrolEntry::firstOrNew([
        // //     // Update existing records, matching them by `$this->data['column_name']`
        // //     'email' => $this->data['email'],
        // // ]);

        // return new GuardPatrolEntry();
    }

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