<?php

namespace App\Filament\Resources\TextbookResource\Pages;

use App\Filament\Resources\TextbookResource;
use App\Services\TextbookApiService;
use App\Services\TextbookCoverStorageService;
use App\Models\Textbook;
use Filament\Forms;
use Filament\Actions;
use Filament\Schemas\Components\Section;
use Filament\Resources\Pages\Page;
use Illuminate\Http\Request;
use Livewire\WithFileUploads;

class EditTextbook extends Page implements Forms\Contracts\HasForms
{
    use Forms\Concerns\InteractsWithForms;
    use WithFileUploads;

    protected static string $resource = TextbookResource::class;

    public array $data = [];

    public ?int $recordId = null;

    public function mount(Request $request): void
    {
        // 从路由参数获取教材ID，避免Livewire的隐式绑定
        $this->recordId = (int) $request->route('record');

        if (!$this->recordId) {
            abort(404);
        }

        // 从API获取教材数据
        $apiService = app(TextbookApiService::class);
        $textbookData = $apiService->getTextbook($this->recordId);

        if (!$textbookData) {
            abort(404);
        }

        // 初始化表单数据
        $this->data = $textbookData;
        $this->form->fill($this->data);
    }

    public function save(): void
    {
        // 验证数据
        $this->validate([
            'data.series_id' => 'required|integer',
            'data.stage' => 'required|string',
            'data.grade' => 'nullable|integer',
            'data.semester' => 'nullable|integer',
            'data.official_title' => 'required|string|max:255',
            'data.isbn' => 'nullable|string|max:255',
            'data.status' => 'required|string|in:draft,published,archived',
        ]);

        // 只传递标量字段到API，跳过关系字段和嵌套对象
        $allowedFields = [
            'series_id', 'stage', 'grade', 'semester', 'naming_scheme',
            'track', 'module_type', 'volume_no', 'legacy_code',
            'curriculum_standard_year', 'curriculum_revision_year',
            'approval_authority', 'approval_year', 'edition_label',
            'official_title', 'aliases', 'isbn',
            'cover_path', 'status', 'sort_order', 'meta'
        ];

        $updateData = [];
        foreach ($allowedFields as $field) {
            if (isset($this->data[$field]) && !is_array($this->data[$field]) && !is_object($this->data[$field])) {
                $updateData[$field] = $this->data[$field];
            }
        }

        // 调用API更新
        $apiService = app(TextbookApiService::class);
        $updatedData = $apiService->updateTextbook($this->recordId, $updateData);

        // 更新本地数据
        $this->data = array_merge($this->data, $updatedData);

        // 显示成功消息
        \Filament\Notifications\Notification::make()
            ->title('教材更新成功')
            ->success()
            ->send();
    }

    protected function getHeaderActions(): array
    {
        return [
            Actions\Action::make('back')
                ->label('返回列表')
                ->url(static::$resource::getUrl('index'))
                ->color('gray'),
        ];
    }

    public function getTitle(): string
    {
        return '编辑教材';
    }

    public function getView(): string
    {
        return 'filament.resources.textbook-resource.edit';
    }

    public function form(\Filament\Schemas\Schema $schema): \Filament\Schemas\Schema
    {
        return $schema
            ->schema([
                Section::make('基本信息')
                    ->schema([
                        Forms\Components\Select::make('series_id')
                            ->label('教材系列')
                            ->options(function () {
                                $apiService = app(TextbookApiService::class);
                                $series = $apiService->getTextbookSeries();
                                $options = [];
                                foreach ($series['data'] as $s) {
                                    $options[$s['id']] = $s['name'];
                                }
                                return $options;
                            })
                            ->required()
                            ->searchable(),

                        Forms\Components\Select::make('stage')
                            ->label('学段')
                            ->options([
                                'primary' => '小学',
                                'junior' => '初中',
                                'senior' => '高中',
                            ])
                            ->required()
                            ->reactive(),

                        Forms\Components\TextInput::make('grade')
                            ->label('年级')
                            ->numeric()
                            ->helperText('例如：7表示七年级'),

                        Forms\Components\Select::make('semester')
                            ->label('学期')
                            ->options([
                                1 => '上学期',
                                2 => '下学期',
                            ])
                            ->helperText('选择学期'),

                        Forms\Components\TextInput::make('official_title')
                            ->label('教材名称')
                            ->required()
                            ->maxLength(255),

                        Forms\Components\TextInput::make('isbn')
                            ->label('ISBN')
                            ->maxLength(255),

                        Forms\Components\Select::make('status')
                            ->label('状态')
                            ->options([
                                'draft' => '草稿',
                                'published' => '已发布',
                                'archived' => '已归档',
                            ])
                            ->required(),
                    ])
                    ->columns(2),
                Section::make('封面上传')
                    ->schema([
                        Forms\Components\FileUpload::make('cover_path')
                            ->label('封面图片')
                            ->image()
                            ->directory('textbook-covers')
                            ->saveUploadedFileUsing(function ($component, $file) {
                                $uploader = app(TextbookCoverStorageService::class);
                                $url = $uploader->uploadCover($file, $this->recordId ? (string) $this->recordId : null);
                                if ($url) {
                                    return $url;
                                }
                                return $file->storePubliclyAs(
                                    $component->getDirectory(),
                                    $component->getUploadedFileNameForStorage($file),
                                    $component->getDiskName(),
                                );
                            })
                            ->helperText('建议尺寸 600x800，JPG/PNG'),
                    ])
                    ->extraAttributes(['id' => 'cover']),
            ])
            ->statePath('data');
    }
}