<?php

declare(strict_types=1);

namespace App\Filament\Pages;

use Carbon\Carbon;
use Filament\Actions\Action as FilamentAction;
use Filament\Forms\Components\TextInput;
use Filament\Notifications\Notification;
use Filament\Pages\Page;
use Filament\Support\Enums\FontFamily;
use Filament\Support\Enums\FontWeight;
use Filament\Tables;
use Filament\Tables\Concerns\InteractsWithTable;
use Filament\Tables\Contracts\HasTable;
use Filament\Tables\Grouping\Group;
use Filament\Tables\Table;
use Illuminate\Pagination\LengthAwarePaginator;
use Illuminate\Support\Facades\Http;
use Morilog\Jalali\Jalalian;

class SmsLogsPage extends Page implements HasTable
{
    use InteractsWithTable;

    protected string $view = 'filament.pages.sms-logs';

    protected static ?int $navigationSort = 10;

    public static function canAccess(): bool
    {
        return auth()->user()->can('View:SmsLogsPage');
    }

    public static function getNavigationIcon(): \BackedEnum|string|null
    {
        return 'heroicon-o-chat-bubble-left-ellipsis';
    }

    public static function getNavigationGroup(): ?string
    {
        return __('navigation.groups.settings');
    }

    public static function getNavigationLabel(): string
    {
        return __('navigation.sms_logs.label');
    }

    public function getTitle(): string
    {
        return __('navigation.sms_logs.title');
    }

    public array $stats = ['patients' => 0, 'total' => 0, 'sent' => 0, 'pending' => 0, 'failed' => 0];

    public function table(Table $table): Table
    {
        return $table
            ->records(fn (array $filters, ?string $search, int $page, int $recordsPerPage) =>
                $this->fetchRecords($filters, $search, $page, $recordsPerPage)
            )
            ->columns([

                Tables\Columns\TextColumn::make('message_type')
                    ->label('نوع پیام')
                    ->getStateUsing(fn (array $record): string => $record['message_type'] ?? '')
                    ->formatStateUsing(fn (string $state): string => match ($state) {
                        'initial'                     => 'پیام اولیه',
                        'reminder_7days'              => 'یادآوری ۷ روز',
                        'reminder_3days'              => 'یادآوری ۳ روز',
                        'reminder_after_registration' => 'یادآوری پس از ثبت',
                        'day_of_surgery'              => 'روز عمل',
                        default                       => $state,
                    })
                    ->badge()
                    ->color(fn (string $state): string => match ($state) {
                        'initial'        => 'info',
                        'day_of_surgery' => 'success',
                        'reminder_3days' => 'pink',
                        default          => 'warning',
                    }),

                Tables\Columns\TextColumn::make('status')
                    ->label('وضعیت')
                    ->getStateUsing(fn (array $record): string => $record['status'] ?? '')
                    ->formatStateUsing(fn (string $state): string => match ($state) {
                        'sent'    => 'ارسال شده',
                        'pending' => 'در انتظار',
                        'failed'  => 'ناموفق',
                        default   => $state,
                    })
                    ->badge()
                    ->color(fn (string $state): string => match ($state) {
                        'sent'    => 'success',
                        'pending' => 'warning',
                        'failed'  => 'danger',
                        default   => 'gray',
                    }),

                Tables\Columns\TextColumn::make('scheduled_at')
                    ->label('زمان‌بندی شده')
                    ->getStateUsing(fn (array $record): string => $this->toJalali($record['scheduled_at'] ?? null)),

                Tables\Columns\TextColumn::make('sent_at')
                    ->label('زمان ارسال')
                    ->getStateUsing(fn (array $record): string => $this->toJalali($record['sent_at'] ?? null)),

            ])
            ->groups([
                Group::make('patient_key')
                    ->titlePrefixedWithLabel(false)
                    ->getTitleFromRecordUsing(fn (array $record): string => $record['patient_name'] ?? '-')
                    ->getDescriptionFromRecordUsing(fn (array $record): string =>
                        ($record['phone_number'] ?? '') .
                        ($record['surgery_date']
                            ? '  |  تاریخ عمل: ' . $this->toJalali($record['surgery_date'], 'Y/m/d')
                            : '')
                    )
                    ->collapsible(),
            ])
            ->defaultGroup('patient_key')
            ->collapsedGroupsByDefault()
            ->groupingSettingsHidden()
            ->filters([
                Tables\Filters\SelectFilter::make('status')
                    ->label('وضعیت')
                    ->options([
                        'sent'    => 'ارسال شده',
                        'pending' => 'در انتظار',
                        'failed'  => 'ناموفق',
                    ]),

                Tables\Filters\Filter::make('patient_name')
                    ->label('نام بیمار')
                    ->form([
                        TextInput::make('patient_name')
                            ->label('نام بیمار')
                            ->placeholder('جستجو...'),
                    ])
                    ->indicateUsing(fn (array $data): ?string => filled($data['patient_name'] ?? null)
                        ? 'نام: ' . $data['patient_name']
                        : null),

                Tables\Filters\Filter::make('phone_number')
                    ->label('شماره موبایل')
                    ->form([
                        TextInput::make('phone_number')
                            ->label('شماره موبایل')
                            ->placeholder('09...'),
                    ])
                    ->indicateUsing(fn (array $data): ?string => filled($data['phone_number'] ?? null)
                        ? 'موبایل: ' . $data['phone_number']
                        : null),
            ])
            ->recordActions([
                FilamentAction::make('delete_message')
                    ->label('حذف پیام')
                    ->icon('heroicon-o-trash')
                    ->color('danger')
                    ->requiresConfirmation()
                    ->modalHeading('حذف پیام')
                    ->modalDescription('آیا از حذف این پیام مطمئن هستید؟')
                    ->modalSubmitActionLabel('بله، حذف شود')
                    ->action(fn (array $record) => $this->deleteSingleMessage((int) $record['id'])),

                FilamentAction::make('delete_patient')
                    ->label('حذف همه پیام‌های بیمار')
                    ->icon('heroicon-o-user-minus')
                    ->color('danger')
                    ->outlined()
                    ->requiresConfirmation()
                    ->modalHeading('حذف همه پیام‌های بیمار')
                    ->modalDescription('آیا از حذف تمام پیام‌های این بیمار مطمئن هستید؟')
                    ->modalSubmitActionLabel('بله، حذف شود')
                    ->action(fn (array $record) => $this->deletePatientMessages(
                        $record['phone_number'],
                        $record['surgery_date']
                    )),
            ])
            ->paginationPageOptions([5, 10, 25, 50]);
    }

    protected function fetchRecords(
        array $filters,
        ?string $search,
        int $page,
        int $recordsPerPage,
    ): LengthAwarePaginator {

        $query = array_filter([
            'status'      => $filters['status']['value'] ?? null,
            'patientName' => $filters['patient_name']['patient_name'] ?? $search,
            'phoneNumber' => $filters['phone_number']['phone_number'] ?? null,
            'limit'       => 500,
        ]);

        try {
            $response = Http::timeout(15)
                ->withHeader('X-API-Key', \App\Models\OsurgInitial::val('sms_api_key', config('sms.api_key')))
                ->get(\App\Models\OsurgInitial::val('sms_api_url', config('sms.api_url')) . '/sms-logs-grouped', $query);

            if ($response->failed() || ! ($response->json('success') ?? false)) {
                \Illuminate\Support\Facades\Log::warning('SmsLogsPage: API returned failure', [
                    'status'   => $response->status(),
                    'body'     => $response->body(),
                    'api_url'  => \App\Models\OsurgInitial::val('sms_api_url', config('sms.api_url')),
                ]);
                Notification::make()
                    ->title('خطا در دریافت لاگ‌های پیامک')
                    ->body('کد: ' . $response->status() . ' | ' . ($response->json('message') ?? $response->body()))
                    ->danger()
                    ->send();
                return new LengthAwarePaginator([], 0, $recordsPerPage, $page);
            }

            $grouped = $response->json('data') ?? [];

            $this->recalcStats($grouped);

            $totalPatients   = count($grouped);
            $patientsOnPage  = array_slice($grouped, ($page - 1) * $recordsPerPage, $recordsPerPage);

            $rows = [];
            foreach ($patientsOnPage as $patient) {
                $patientKey = ($patient['phone_number'] ?? '') . '|' . ($patient['surgery_date'] ?? '');

                foreach ($patient['messages'] ?? [] as $msg) {
                    $rows[] = [
                        'id'           => $msg['id'],
                        'patient_key'  => $patientKey,        
                        'patient_name' => $patient['patient_name'] ?? '-',
                        'phone_number' => $patient['phone_number'] ?? '',
                        'surgery_date' => $patient['surgery_date'] ?? '',
                        'message_type' => $msg['message_type'] ?? '',
                        'status'       => $msg['status'] ?? '',
                        'scheduled_at' => $msg['scheduled_at'] ?? null,
                        'sent_at'      => $msg['sent_at'] ?? null,
                    ];
                }
            }

            return new LengthAwarePaginator(
                items: $rows,
                total: $totalPatients,
                perPage: $recordsPerPage,
                currentPage: $page,
            );

        } catch (\Throwable $e) {
            \Illuminate\Support\Facades\Log::error('SmsLogsPage: API exception', [
                'error'   => $e->getMessage(),
                'api_url' => \App\Models\OsurgInitial::val('sms_api_url', config('sms.api_url')),
            ]);
            Notification::make()
                ->title('خطا در اتصال به سرویس پیامک')
                ->body($e->getMessage())
                ->danger()
                ->send();
            return new LengthAwarePaginator([], 0, $recordsPerPage, $page);
        }
    }

    public function deleteSingleMessage(int $id): void
    {
        try {
            $response = Http::timeout(10)
                ->withHeader('X-API-Key', \App\Models\OsurgInitial::val('sms_api_key', config('sms.api_key')))
                ->delete(\App\Models\OsurgInitial::val('sms_api_url', config('sms.api_url')) . '/sms-logs/' . $id);

            if ($response->json('success') ?? false) {
                Notification::make()->title('پیام حذف شد')->success()->send();
                $this->resetTable();
            } else {
                Notification::make()->title($response->json('message') ?? 'خطا در حذف پیام')->danger()->send();
            }
        } catch (\Throwable $e) {
            Notification::make()->title('خطا: ' . $e->getMessage())->danger()->send();
        }
    }

    public function deletePatientMessages(string $phoneNumber, string $surgeryDate): void
    {
        try {
            $response = Http::timeout(10)
                ->withHeader('X-API-Key', \App\Models\OsurgInitial::val('sms_api_key', config('sms.api_key')))
                ->post(\App\Models\OsurgInitial::val('sms_api_url', config('sms.api_url')) . '/sms-logs/delete-patient', [
                    'phoneNumber' => $phoneNumber,
                    'surgeryDate' => $surgeryDate,
                ]);

            if ($response->json('success') ?? false) {
                Notification::make()->title('همه پیام‌های بیمار حذف شد')->success()->send();
                $this->resetTable();
            } else {
                Notification::make()->title($response->json('message') ?? 'خطا در حذف پیام‌ها')->danger()->send();
            }
        } catch (\Throwable $e) {
            Notification::make()->title('خطا: ' . $e->getMessage())->danger()->send();
        }
    }

    public static function cancelAppointmentMessages(string $phoneNumber, string $localSurgeryDate): void
    {
        try {
            $apiKey  = \App\Models\OsurgInitial::val('sms_api_key', config('sms.api_key'));
            $apiUrl  = \App\Models\OsurgInitial::val('sms_api_url', config('sms.api_url'));
            $localDate = \Carbon\Carbon::parse($localSurgeryDate)->format('Y-m-d');

            $grouped = Http::timeout(10)
                ->withHeader('X-API-Key', $apiKey)
                ->get($apiUrl . '/sms-logs-grouped', [
                    'phoneNumber' => $phoneNumber,
                    'limit'       => 200,
                ])
                ->json('data') ?? [];

            $serverSurgeryDate = null;
            foreach ($grouped as $group) {
                if (($group['phone_number'] ?? '') !== $phoneNumber) {
                    continue;
                }
                $groupDate = $group['surgery_date'] ?? '';
                if (! $groupDate) {
                    continue;
                }
                try {
                    if (\Carbon\Carbon::parse($groupDate)->format('Y-m-d') === $localDate) {
                        $serverSurgeryDate = $groupDate;
                        break;
                    }
                } catch (\Throwable) {}
            }

            if (! $serverSurgeryDate) {
                return;
            }

            Http::timeout(10)
                ->withHeader('X-API-Key', $apiKey)
                ->asJson()
                ->post($apiUrl . '/sms-logs/delete-patient', [
                    'phoneNumber' => $phoneNumber,
                    'surgeryDate' => $serverSurgeryDate,
                ]);
        } catch (\Throwable) {
        }
    }

    public function toJalali(?string $dateStr, string $format = 'Y/m/d H:i'): string
    {
        if (! $dateStr) {
            return '-';
        }
        try {
            return Jalalian::fromCarbon(
                Carbon::parse($dateStr, 'UTC')->setTimezone('Asia/Tehran')
            )->format($format);
        } catch (\Throwable) {
            return $dateStr;
        }
    }

    private function recalcStats(array $grouped): void
    {
        $total = $sent = $pending = $failed = 0;

        foreach ($grouped as $p) {
            $total   += $p['stats']['total']   ?? 0;
            $sent    += $p['stats']['sent']    ?? 0;
            $pending += $p['stats']['pending'] ?? 0;
            $failed  += $p['stats']['failed']  ?? 0;
        }

        $this->stats = [
            'patients' => count($grouped),
            'total'    => $total,
            'sent'     => $sent,
            'pending'  => $pending,
            'failed'   => $failed,
        ];
    }
}