<?php

namespace App\Filament\Resources;

use App\Filament\Resources\AppealResource\Pages\EditAppeal;
use App\Filament\Resources\AppealResource\Pages\ListAppeals;
use App\Filament\Resources\AppealResource\RelationManagers\AppealChildrenRelationManager;
use App\Filament\Resources\AppealResource\RelationManagers\AppealDonationsRelationManager;
use App\Jobs\N3O\Data\SendAppeal;
use App\Jobs\WordPress\SyncAppeal;
use App\Models\Appeal;
use App\Models\DonationType;
use Filament\Forms\Components\Fieldset;
use Filament\Forms\Components\FileUpload;
use Filament\Forms\Components\RichEditor;
use Filament\Forms\Components\Section;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Components\Toggle;
use Filament\Forms\Form;
use Filament\GlobalSearch\Actions\Action as GlobalSearchAction;
use Filament\Notifications\Notification;
use Filament\Resources\Resource;
use Filament\Support\Enums\MaxWidth;
use Filament\Tables\Actions\Action;
use Filament\Tables\Actions\ActionGroup;
use Filament\Tables\Actions\BulkAction;
use Filament\Tables\Actions\EditAction;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Table;
use Illuminate\Contracts\View\View;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\HtmlString;

class AppealResource extends Resource
{
    protected static ?string $model = Appeal::class;

    protected static ?string $navigationIcon = 'heroicon-o-hand-raised';

    protected static ?string $navigationGroup = 'Campaigns';

    protected static ?int $navigationSort = 1;

    protected static ?string $modelLabel = 'Fundraiser';

    protected static ?string $pluralModelLabel = 'Fundraisers';

    protected static ?string $navigationLabel = 'Fundraisers';

    protected static ?string $recordTitleAttribute = 'name';

    // ─── Global Search ────────────────────────────────────────────

    public static function getGloballySearchableAttributes(): array
    {
        return ['name', 'slug', 'description'];
    }

    public static function getGlobalSearchResultTitle(Model $record): string|HtmlString
    {
        return $record->name;
    }

    public static function getGlobalSearchResultDetails(Model $record): array
    {
        $pct = $record->amount_to_raise > 0
            ? round($record->amount_raised / $record->amount_to_raise * 100)
            : 0;

        return [
            'Progress' => '£' . number_format($record->amount_raised / 100, 0) . ' / £' . number_format($record->amount_to_raise / 100, 0) . " ({$pct}%)",
            'Status' => $record->is_accepting_donations ? 'Live' : 'Closed',
            'Owner' => $record->user?->name ?? '—',
        ];
    }

    public static function getGlobalSearchResultActions(Model $record): array
    {
        return [
            GlobalSearchAction::make('edit')
                ->label('Open Fundraiser')
                ->url(static::getUrl('edit', ['record' => $record])),
        ];
    }

    public static function getGlobalSearchEloquentQuery(): Builder
    {
        return parent::getGlobalSearchEloquentQuery()
            ->with('user')
            ->latest('created_at');
    }

    // ─── Form ────────────────────────────────────────────────────

    public static function form(Form $form): Form
    {
        return $form
            ->schema([
                Fieldset::make('Connections')->schema([
                    Select::make('parent_appeal_id')
                        ->label('Parent Fundraiser')
                        ->relationship('parent', 'name', modifyQueryUsing: fn ($query) => $query->whereNull('parent_appeal_id'))
                        ->required(false)
                        ->searchable(),

                    Select::make('user_id')
                        ->label('Page Owner')
                        ->searchable()
                        ->relationship('user', 'name')
                        ->required(),
                ]),

                Section::make('General Info')->schema([
                    Fieldset::make('Info')->schema([
                        TextInput::make('name')
                            ->label('Fundraiser Name')
                            ->required()
                            ->maxLength(255),

                        TextInput::make('slug')
                            ->label('URL Slug')
                            ->required()
                            ->maxLength(255)
                            ->unique(
                                table: 'appeals',
                                column: 'slug',
                                ignorable: $form->getRecord(),
                                modifyRuleUsing: fn ($rule) => $rule->whereNull('deleted_at')
                            )
                            ->disabled(),

                        TextInput::make('description')
                            ->label('Short Description')
                            ->required()
                            ->maxLength(512),
                    ]),

                    Fieldset::make('Target & Allocation')->schema([
                        TextInput::make('amount_to_raise')
                            ->label('Fundraising Target')
                            ->numeric()
                            ->minValue(150)
                            ->maxValue(999_999_999)
                            ->prefix('£')
                            ->required(),

                        TextInput::make('amount_raised')
                            ->label('Amount Raised So Far')
                            ->numeric()
                            ->prefix('£')
                            ->disabled(),

                        Select::make('donation_type_id')
                            ->label('Cause')
                            ->relationship('donationType', 'display_name')
                            ->searchable()
                            ->preload()
                            ->live()
                            ->required(),

                        Select::make('donation_country_id')
                            ->label('Country')
                            ->required()
                            ->visible(function (\Filament\Forms\Get $get) {
                                $donationTypeId = $get('donation_type_id');
                                if (!($donationType = DonationType::find($donationTypeId))) {
                                    return false;
                                }
                                return $donationType->donationCountries()->count() > 1;
                            })
                            ->options(function (\Filament\Forms\Get $get) {
                                $donationTypeId = $get('donation_type_id');
                                if (!($donationType = DonationType::find($donationTypeId))) {
                                    return [];
                                }
                                return $donationType->donationCountries->pluck('name', 'id')->toArray();
                            })
                            ->live(),
                    ]),

                    Fieldset::make('Settings')->schema([
                        Toggle::make('is_visible')
                            ->label('Visible on website'),

                        Toggle::make('is_in_memory')
                            ->label('In memory of someone')
                            ->live(),

                        TextInput::make('in_memory_name')
                            ->label('In memory of')
                            ->required(fn (\Filament\Forms\Get $get) => $get('is_in_memory'))
                            ->visible(fn (\Filament\Forms\Get $get) => $get('is_in_memory')),

                        Toggle::make('is_accepting_donations')
                            ->label('Accepting donations'),

                        Toggle::make('is_team_campaign')
                            ->label('Team fundraiser'),

                        Toggle::make('is_accepting_members')
                            ->label('Accepting team members')
                            ->live()
                            ->visible(fn (\Filament\Forms\Get $get) => $get('is_team_campaign')),
                    ]),
                ])
                    ->collapsible()
                    ->collapsed(),

                Section::make('Content')->schema([
                    FileUpload::make('picture')
                        ->label('Cover Image')
                        ->required()
                        ->columnSpanFull(),

                    RichEditor::make('story')
                        ->label('Fundraiser Story')
                        ->required()
                        ->minLength(150)
                        ->columnSpanFull(),
                ])
                    ->collapsible()
                    ->collapsed(),
            ]);
    }

    // ─── Table ────────────────────────────────────────────────────
    // Designed for the "Fundraiser Nurture" journey:
    // Jasmine opens this page and immediately sees which fundraisers
    // need attention, which are succeeding, which are stale.

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                TextColumn::make('name')
                    ->label('Fundraiser')
                    ->searchable()
                    ->sortable()
                    ->weight('bold')
                    ->limit(40)
                    ->description(fn (Appeal $a) => $a->user?->name ? 'by ' . $a->user->name : null)
                    ->tooltip(fn (Appeal $a) => $a->name),

                TextColumn::make('status_label')
                    ->label('Status')
                    ->getStateUsing(function (Appeal $a) {
                        if ($a->status === 'pending') return 'Pending Review';
                        if (!$a->is_accepting_donations) return 'Closed';
                        return 'Live';
                    })
                    ->badge()
                    ->color(fn ($state) => match ($state) {
                        'Live' => 'success',
                        'Pending Review' => 'warning',
                        'Closed' => 'gray',
                        default => 'gray',
                    }),

                TextColumn::make('progress')
                    ->label('Progress')
                    ->getStateUsing(function (Appeal $a) {
                        $raised = $a->amount_raised / 100;
                        $target = $a->amount_to_raise / 100;
                        $pct = $target > 0 ? round($raised / $target * 100) : 0;
                        return '£' . number_format($raised, 0) . ' / £' . number_format($target, 0) . " ({$pct}%)";
                    })
                    ->color(function (Appeal $a) {
                        $pct = $a->amount_to_raise > 0 ? $a->amount_raised / $a->amount_to_raise : 0;
                        if ($pct >= 1) return 'success';
                        if ($pct >= 0.5) return 'info';
                        if ($pct > 0) return 'warning';
                        return 'danger';
                    })
                    ->weight('bold'),

                TextColumn::make('donationType.display_name')
                    ->label('Cause')
                    ->badge()
                    ->color('info')
                    ->toggleable(),

                TextColumn::make('nurture_status')
                    ->label('Needs Attention?')
                    ->getStateUsing(function (Appeal $a) {
                        if ($a->status !== 'confirmed') return null;
                        if (!$a->is_accepting_donations) return null;

                        $raised = $a->amount_raised;
                        $target = $a->amount_to_raise;
                        $age = $a->created_at?->diffInDays(now()) ?? 0;

                        if ($raised == 0 && $age > 7) return '🔴 No donations yet';
                        if ($raised > 0 && $raised >= $target * 0.8 && $raised < $target) return '🟡 Almost there!';
                        if ($raised >= $target) return '🟢 Target reached!';
                        if ($raised > 0 && $age > 30) return '🟠 Slowing down';

                        return null;
                    })
                    ->placeholder('—')
                    ->wrap(),

                TextColumn::make('created_at')
                    ->label('Created')
                    ->since()
                    ->sortable()
                    ->description(fn (Appeal $a) => $a->created_at?->format('d M Y')),
            ])
            ->filters([])
            ->actions([
                Action::make('view_page')
                    ->label('View Page')
                    ->icon('heroicon-o-eye')
                    ->color('gray')
                    ->url(fn (Appeal $a) => 'https://www.charityright.org.uk/fundraiser/' . $a->slug)
                    ->openUrlInNewTab(),

                ActionGroup::make([
                    EditAction::make(),

                    Action::make('email_owner')
                        ->label('Email Owner')
                        ->icon('heroicon-o-envelope')
                        ->url(fn (Appeal $a) => $a->user?->email ? 'mailto:' . $a->user->email : null)
                        ->visible(fn (Appeal $a) => (bool) $a->user?->email)
                        ->openUrlInNewTab(),

                    Action::make('send_to_engage')
                        ->label('Send to Engage')
                        ->icon('heroicon-o-arrow-up-on-square')
                        ->action(function (Appeal $appeal) {
                            dispatch(new SendAppeal($appeal));
                            Notification::make()->title('Sent to Engage')->success()->send();
                        }),

                    Action::make('appeal_owner')
                        ->label('Page Owner Details')
                        ->icon('heroicon-o-user')
                        ->modalContent(fn (Appeal $appeal): View => view('filament.fields.appeal-owner', ['appeal' => $appeal]))
                        ->modalWidth(MaxWidth::Large)
                        ->modalSubmitAction(false)
                        ->modalCancelAction(false),
                ]),
            ])
            ->bulkActions([
                BulkAction::make('send_to_engage')
                    ->label('Send to Engage')
                    ->icon('heroicon-o-arrow-up-on-square')
                    ->action(function ($records) {
                        foreach ($records as $appeal) {
                            dispatch(new SendAppeal($appeal));
                        }
                        Notification::make()->title(count($records) . ' sent to Engage')->success()->send();
                    }),

                BulkAction::make('send_to_wp')
                    ->label('Sync to WordPress')
                    ->icon('heroicon-o-globe-alt')
                    ->action(function ($records) {
                        foreach ($records as $appeal) {
                            dispatch(new SyncAppeal($appeal));
                        }
                        Notification::make()->title(count($records) . ' synced to WordPress')->success()->send();
                    }),
            ])
            ->defaultSort('created_at', 'desc')
            ->searchPlaceholder('Search by fundraiser name...');
    }

    public static function getRelations(): array
    {
        return [
            AppealDonationsRelationManager::class,
            AppealChildrenRelationManager::class,
        ];
    }

    public static function getPages(): array
    {
        return [
            'index' => ListAppeals::route('/'),
            'edit' => EditAppeal::route('/{record}/edit'),
        ];
    }
}