<?php

declare(strict_types=1);

namespace App\Filament\Resources;
use App\Filament\Resources\PrescriptionResource\Pages;
use App\Models\LabTest;
use App\Models\Medication;
use App\Models\Patient;
use App\Models\Prescription;
use App\Services\PdfService;
use Morilog\Jalali\Jalalian;
use Filament\Actions\Action;
use Filament\Actions\ActionGroup;
use Filament\Actions\BulkAction;
use Filament\Actions\BulkActionGroup;
use Filament\Actions\DeleteAction;
use Filament\Actions\DeleteBulkAction;
use Filament\Actions\EditAction;
use Filament\Forms\Components\CheckboxList;
use Filament\Forms\Components\DatePicker;
use Filament\Forms\Components\Hidden;
use Filament\Forms\Components\RichEditor;
use Filament\Forms\Components\Select;
use Filament\Resources\Resource;
use Filament\Schemas\Components\Grid;
use Filament\Schemas\Components\Section;
use Filament\Schemas\Components\Tabs;
use Filament\Schemas\Components\Tabs\Tab;
use Filament\Schemas\Schema;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Table;
use Illuminate\Support\Collection;
use OpenSpout\Common\Entity\Row;
use OpenSpout\Writer\XLSX\Writer;

class PrescriptionResource extends Resource
{
    protected static ?string $model = Prescription::class;

    protected static ?string $recordTitleAttribute = 'doctor';

    public static function getGloballySearchableAttributes(): array
    {
        return ['doctor', 'patientRecord.first_name', 'patientRecord.last_name'];
    }

    public static function getNavigationIcon(): \BackedEnum|string|null
    {
        return 'heroicon-o-document-text';
    }

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

    public static function getNavigationSort(): ?int
    {
        return 2;
    }

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

    public static function getModelLabel(): string
    {
        return __('navigation.prescriptions.singular');
    }

    public static function getPluralModelLabel(): string
    {
        return __('navigation.prescriptions.title');
    }

    public static function form(Schema $schema): Schema
    {
        return $schema
            ->components([
                Grid::make()
                    ->schema([
                        Section::make(__('prescriptions.sections.info'))
                            ->schema([
                                Select::make('patient')
                                    ->label(__('prescriptions.fields.patient'))
                                    ->options(fn () => Patient::all()->mapWithKeys(
                                        fn ($p) => [$p->id => $p->full_name]
                                    )->toArray())
                                    ->searchable()
                                    ->nullable(),

                                DatePicker::make('issue_date')
                                    ->label(__('prescriptions.fields.issue_date'))
                                    ->jalali()
                                    ->default(now()),
                            ])
                            ->columns(2)
                            ->columnSpanFull(),

                        Section::make()
                            ->schema([
                                Tabs::make()
                                    ->tabs([
                                        Tab::make(__('prescriptions.sections.medications'))
                                            ->icon('heroicon-o-clipboard-document-list')
                                            ->schema([
                                                Hidden::make('medication_order'),

                                                CheckboxList::make('medication_ids')
                                                    ->label(__('prescriptions.fields.medication_ids'))
                                                    ->options(fn () => Medication::where('is_active', true)
                                                        ->orderBy('name')
                                                        ->get()
                                                        ->mapWithKeys(fn ($m) => [
                                                            $m->id => implode(' ', array_filter([
                                                                $m->dosage_form,
                                                                $m->name,
                                                                $m->strength,
                                                                $m->quantity ? '#' . $m->quantity : null,
                                                                $m->timing,
                                                            ])),
                                                        ])
                                                        ->toArray()
                                                    )
                                                    ->columns(3)
                                                    ->live()
                                                    ->afterStateUpdated(function (array $state, callable $set, callable $get) {
                                                        $currentOrder = array_map('intval', (array) ($get('medication_order') ?: []));
                                                        $state        = array_map('intval', $state);

                                                        $newOrder = array_values(
                                                            array_filter($currentOrder, fn ($id) => in_array($id, $state))
                                                        );
                                                        foreach ($state as $id) {
                                                            if (! in_array($id, $newOrder)) {
                                                                $newOrder[] = $id;
                                                            }
                                                        }
                                                        $set('medication_order', $newOrder);

                                                        if (empty($newOrder)) {
                                                            $set('content', null);
                                                            return;
                                                        }
                                                        $medications = Medication::whereIn('id', $newOrder)->get()->keyBy('id');
                                                        $html = '<ul>' . collect($newOrder)
                                                            ->map(fn ($id) => isset($medications[$id])
                                                                ? '<li>' . implode(' ', array_filter([
                                                                    $medications[$id]->dosage_form,
                                                                    $medications[$id]->name,
                                                                    $medications[$id]->strength,
                                                                    $medications[$id]->quantity ? '#' . $medications[$id]->quantity : null,
                                                                    $medications[$id]->timing,
                                                                ])) . '</li>'
                                                                : ''
                                                            )
                                                            ->filter()
                                                            ->implode('') . '</ul>';
                                                        $set('content', $html);
                                                    })
                                                    ->columnSpanFull(),

                                                RichEditor::make('content')
                                                    ->label(__('prescriptions.fields.content'))
                                                    ->columnSpanFull(),
                                            ]),

                                        Tab::make(__('prescriptions.sections.lab_tests'))
                                            ->icon('heroicon-o-beaker')
                                            ->schema([
                                                Hidden::make('lab_test_order'),

                                                CheckboxList::make('lab_test_ids')
                                                    ->label(__('prescriptions.fields.lab_test_ids'))
                                                    ->options(fn () => LabTest::where('is_active', true)
                                                        ->orderBy('name')
                                                        ->get()
                                                        ->mapWithKeys(fn ($t) => [$t->id => $t->name])
                                                        ->toArray()
                                                    )
                                                    ->columns(3)
                                                    ->live()
                                                    ->afterStateHydrated(function (array $state, callable $set, callable $get) {
                                                        if (empty($state) || ! empty($get('lab_content'))) {
                                                            return;
                                                        }
                                                        $order = array_map('intval', $state);
                                                        $set('lab_test_order', $order);
                                                        $tests = LabTest::whereIn('id', $order)->get()->keyBy('id');
                                                        $html  = '<ul>' . collect($order)->map(fn ($id) => isset($tests[$id]) ? '<li>' . $tests[$id]->name . '</li>' : '')->filter()->implode('') . '</ul>';
                                                        $set('lab_content', $html);
                                                    })
                                                    ->afterStateUpdated(function (array $state, callable $set, callable $get) {
                                                        $currentOrder = array_map('intval', (array) ($get('lab_test_order') ?: []));
                                                        $state        = array_map('intval', $state);

                                                        $newOrder = array_values(
                                                            array_filter($currentOrder, fn ($id) => in_array($id, $state))
                                                        );
                                                        foreach ($state as $id) {
                                                            if (! in_array($id, $newOrder)) {
                                                                $newOrder[] = $id;
                                                            }
                                                        }
                                                        $set('lab_test_order', $newOrder);

                                                        if (empty($newOrder)) {
                                                            $set('lab_content', null);
                                                            return;
                                                        }
                                                        $tests = LabTest::whereIn('id', $newOrder)->get()->keyBy('id');
                                                        $html = '<ul>' . collect($newOrder)
                                                            ->map(fn ($id) => isset($tests[$id])
                                                                ? '<li>' . $tests[$id]->name . '</li>'
                                                                : ''
                                                            )
                                                            ->filter()
                                                            ->implode('') . '</ul>';
                                                        $set('lab_content', $html);
                                                    })
                                                    ->columnSpanFull(),

                                                RichEditor::make('lab_content')
                                                    ->label(__('prescriptions.fields.lab_content'))
                                                    ->columnSpanFull(),
                                            ]),
                                    ])
                                    ->columnSpanFull(),
                            ])
                            ->columnSpanFull()
                            ->footerActions([
                                fn (string $operation) => Action::make('createAndPrint')
                                    ->label(__('prescriptions.actions.save_and_print'))
                                    ->color('primary')
                                    ->icon('heroicon-o-printer')
                                    ->action(function ($livewire) {
                                        $livewire->printType = 'prescription';
                                        $livewire->create();
                                    })
                                    ->visible($operation === 'create'),

                                fn (string $operation) => Action::make('createAndPrintLab')
                                    ->label(__('prescriptions.actions.print_lab'))
                                    ->color('gray')
                                    ->icon('heroicon-o-beaker')
                                    ->action(function ($livewire) {
                                        $livewire->printType = 'lab';
                                        $livewire->create();
                                    })
                                    ->visible($operation === 'create'),

                                fn (string $operation) => Action::make('createAndPrintBoth')
                                    ->label(__('prescriptions.actions.save_and_print_both'))
                                    ->color('warning')
                                    ->icon('heroicon-o-document-duplicate')
                                    ->action(function ($livewire) {
                                        $livewire->printType = 'both';
                                        $livewire->create();
                                    })
                                    ->visible($operation === 'create'),

                                fn (string $operation) => Action::make('cancelCreate')
                                    ->label(__('filament-panels::resources/pages/create-record.form.actions.cancel.label'))
                                    ->url(static::getUrl('index'))
                                    ->color('gray')
                                    ->visible($operation === 'create'),
                                fn (string $operation) => Action::make('save')
                                    ->label(__('filament-panels::resources/pages/edit-record.form.actions.save.label'))
                                    ->submit('save')
                                    ->keyBindings(['mod+s'])
                                    ->visible($operation === 'edit'),
                                fn (string $operation) => Action::make('cancelEdit')
                                    ->label(__('filament-panels::resources/pages/edit-record.form.actions.cancel.label'))
                                    ->url(static::getUrl('index'))
                                    ->color('gray')
                                    ->visible($operation === 'edit'),
                            ]),
                    ])
                    ->columnSpanFull(),
            ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->modifyQueryUsing(fn ($query) => $query->with(['patientRecord', 'creator']))
            ->deferLoading()
            ->columns([
                TextColumn::make('patientRecord.first_name')
                    ->label(__('prescriptions.fields.patient'))
                    ->formatStateUsing(fn ($record) => $record->patientRecord?->full_name ?? '-')
                    ->searchable()
                    ->sortable(),

                TextColumn::make('doctor')
                    ->label(__('prescriptions.fields.doctor'))
                    ->searchable()
                    ->sortable(),

                TextColumn::make('issue_date')
                    ->label(__('prescriptions.fields.issue_date'))
                    ->sortable()
                    ->formatStateUsing(function ($state) {
                        if (! $state) {
                            return '-';
                        }
                        try {
                            $date = \Carbon\Carbon::parse($state);
                            return Jalalian::fromCarbon($date)->format('Y/m/d - H:i');
                        } catch (\Exception $e) {
                            return $state;
                        }
                    })
                    ->placeholder('-'),

                TextColumn::make('content')
                    ->label(__('prescriptions.fields.content'))
                    ->formatStateUsing(fn ($state) => strip_tags($state ?? ''))
                    ->limit(80)
                    ->placeholder('-'),

                TextColumn::make('creator.name')
                    ->label(__('prescriptions.fields.created_by'))
                    ->sortable(),

                TextColumn::make('created_at')
                    ->label(__('prescriptions.fields.created_at'))
                    ->sortable()
                    ->formatStateUsing(function ($state) {
                        if (! $state) {
                            return '-';
                        }
                        try {
                            $date = \Carbon\Carbon::parse($state);
                            return Jalalian::fromCarbon($date)->format('Y/m/d - H:i');
                        } catch (\Exception $e) {
                            return $state;
                        }
                    }),
            ])
            ->defaultSort('created_at', 'desc')
            ->recordActions([
                Action::make('printBoth')
                    ->label(__('prescriptions.actions.print_both'))
                    ->icon('heroicon-o-document-duplicate')
                    ->color('purple')
                    ->modalContent(fn ($record) => view('filament.prescription-print-modal', [
                        'url' => route('prescription.print', ['prescription' => $record, 'type' => 'both']),
                    ]))
                    ->modalHeading(fn ($record) => ($record->patientRecord?->full_name ?? '') . ' — نسخه و آزمایش')
                    ->modalWidth('7xl')
                    ->modalSubmitAction(false)
                    ->modalCancelActionLabel('بستن'),

                Action::make('printPrescription')
                    ->label(__('prescriptions.actions.print_prescription'))
                    ->icon('heroicon-o-printer')
                    ->color('info')
                    ->url(fn ($record) => route('prescription.print', $record))
                    ->openUrlInNewTab(),

                Action::make('printAdmission')
                    ->label(__('prescriptions.actions.print_admission'))
                    ->icon('heroicon-o-printer')
                    ->color('warning')
                    ->url(fn ($record) => route('prescription.print.admission', $record))
                    ->openUrlInNewTab(),

                Action::make('printLab')
                    ->label(__('prescriptions.actions.print_lab'))
                    ->icon('heroicon-o-beaker')
                    ->color('gray')
                    ->url(fn ($record) => route('prescription.print', ['prescription' => $record, 'type' => 'lab']))
                    ->openUrlInNewTab(),

                EditAction::make(),
                DeleteAction::make(),
            ])
            ->toolbarActions([
                BulkActionGroup::make([
                    DeleteBulkAction::make(),
                    BulkAction::make('export_excel_selected')
                        ->label(__('table.export_excel_selected'))
                        ->icon('heroicon-o-table-cells')
                        ->color('success')
                        ->action(function (Collection $records) {
                            $tempPath = tempnam(sys_get_temp_dir(), 'export_') . '.xlsx';
                            $writer = new Writer();
                            $writer->openToFile($tempPath);

                            $writer->addRow(Row::fromValues([
                                'ID',
                                __('prescriptions.fields.patient'),
                                __('prescriptions.fields.doctor'),
                                __('prescriptions.fields.issue_date'),
                                __('prescriptions.fields.content'),
                            ]));

                            foreach ($records as $record) {
                                $writer->addRow(Row::fromValues([
                                    $record->id,
                                    $record->patientRecord?->full_name ?? '',
                                    $record->doctor,
                                    $record->issue_date,
                                    strip_tags($record->content ?? ''),
                                ]));
                            }

                            $writer->close();

                            return response()->streamDownload(function () use ($tempPath) {
                                readfile($tempPath);
                                @unlink($tempPath);
                            }, 'prescriptions-' . now()->format('Y-m-d') . '.xlsx', [
                                'Content-Type' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
                            ]);
                        }),
                ]),

                ActionGroup::make([
                    Action::make('export_excel')
                        ->label(__('table.export_excel'))
                        ->color('success')
                        ->icon('heroicon-o-table-cells')
                        ->action(function () {
                            $records = Prescription::with('patientRecord')->orderBy('created_at', 'desc')->get();

                            $tempPath = tempnam(sys_get_temp_dir(), 'export_') . '.xlsx';
                            $writer = new Writer();
                            $writer->openToFile($tempPath);

                            $writer->addRow(Row::fromValues([
                                'ID',
                                __('prescriptions.fields.patient'),
                                __('prescriptions.fields.doctor'),
                                __('prescriptions.fields.issue_date'),
                                __('prescriptions.fields.content'),
                            ]));

                            foreach ($records as $record) {
                                $writer->addRow(Row::fromValues([
                                    $record->id,
                                    $record->patientRecord?->full_name ?? '',
                                    $record->doctor,
                                    $record->issue_date,
                                    strip_tags($record->content ?? ''),
                                ]));
                            }

                            $writer->close();

                            return response()->streamDownload(function () use ($tempPath) {
                                readfile($tempPath);
                                @unlink($tempPath);
                            }, 'prescriptions-' . now()->format('Y-m-d') . '.xlsx', [
                                'Content-Type' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
                            ]);
                        }),

                    Action::make('export_pdf')
                        ->label(__('table.export_pdf'))
                        ->color('danger')
                        ->icon('heroicon-o-document-arrow-down')
                        ->action(function () {
                            $records = Prescription::with('patientRecord')->orderBy('created_at', 'desc')->get();

                            return PdfService::download(
                                'exports.prescriptions-pdf',
                                ['records' => $records],
                                'prescriptions-' . now()->format('Y-m-d') . '.pdf',
                            );
                        }),
                ])
                    ->label(__('table.export'))
                    ->color('orange')
                    ->button(),
            ]);
    }

    public static function getPages(): array
    {
        return [
            'index'  => Pages\ListPrescriptions::route('/'),
            'create' => Pages\CreatePrescription::route('/create'),
            'edit'   => Pages\EditPrescription::route('/{record}/edit'),
        ];
    }
}