<?php

namespace App\Http\Controllers\Supervisor;

use App\Http\Controllers\Controller;
use App\Http\Controllers\Supervisor\Concerns\ScopesSupervisorResources;
use App\Models\Establishment;
use App\Models\Promotion;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Inertia\Inertia;
use Inertia\Response;

class PromotionPageController extends Controller
{
    use ScopesSupervisorResources;

    public function index(): Response
    {
        $query = Promotion::query()->with('establishment:id,name');
        $this->scopeEstablishmentQuery($query);

        $promotions = $query
            ->orderByDesc('starts_at')
            ->get()
            ->map(fn (Promotion $promotion) => $this->formatPromotion($promotion));

        return Inertia::render('Supervisor/Promotions/Index', [
            'promotions' => $promotions,
            'establishments' => $this->establishmentOptions(),
            'machineTypes' => $this->machineTypeOptions(),
            'discountTypes' => $this->discountTypeOptions(),
        ]);
    }

    public function store(Request $request): RedirectResponse
    {
        $validated = $this->validatePromotion($request);
        $this->assertEstablishmentAccessible((int) $validated['establishment_id']);

        Promotion::query()->create($validated);

        return redirect()->route('supervisor.promotions.index')
            ->with('success', 'Promotion créée.');
    }

    public function update(Request $request, int $id): RedirectResponse
    {
        $promotion = $this->findAccessiblePromotion($id);
        $validated = $this->validatePromotion($request);
        $this->assertEstablishmentAccessible((int) $validated['establishment_id']);

        $promotion->update($validated);

        return redirect()->route('supervisor.promotions.index')
            ->with('success', 'Promotion mise à jour.');
    }

    public function destroy(int $id): RedirectResponse
    {
        $promotion = $this->findAccessiblePromotion($id);
        $promotion->delete();

        return redirect()->route('supervisor.promotions.index')
            ->with('success', 'Promotion supprimée.');
    }

    /**
     * @return array<string, mixed>
     */
    private function validatePromotion(Request $request): array
    {
        return $request->validate([
            'establishment_id' => ['required', 'integer', 'exists:establishments,id'],
            'machine_type' => ['required', 'in:washer_small,washer_large,dryer_small,dryer_large,all'],
            'discount_type' => ['required', 'in:percent,fixed'],
            'discount_value' => ['required', 'numeric', 'min:0'],
            'starts_at' => ['required', 'date'],
            'ends_at' => ['required', 'date', 'after:starts_at'],
            'description' => ['nullable', 'string', 'max:500'],
            'is_active' => ['boolean'],
        ]);
    }

    private function findAccessiblePromotion(int $id): Promotion
    {
        $query = Promotion::query()->where('id', $id);
        $this->scopeEstablishmentQuery($query);

        return $query->firstOrFail();
    }

    private function assertEstablishmentAccessible(int $establishmentId): void
    {
        $supervisor = $this->supervisor();

        $exists = Establishment::query()
            ->where('id', $establishmentId)
            ->where('organization_id', $supervisor->organization_id)
            ->when($supervisor->establishment_id, fn ($q) => $q->where('id', $supervisor->establishment_id))
            ->exists();

        abort_unless($exists, 403);
    }

    /**
     * @return array<string, mixed>
     */
    private function formatPromotion(Promotion $promotion): array
    {
        return [
            'id' => $promotion->id,
            'establishment_id' => $promotion->establishment_id,
            'establishment_name' => $promotion->establishment?->name,
            'machine_type' => $promotion->machine_type,
            'machine_type_label' => $this->machineTypeOptions()[$promotion->machine_type] ?? $promotion->machine_type,
            'discount_type' => $promotion->discount_type,
            'discount_type_label' => $this->discountTypeOptions()[$promotion->discount_type] ?? $promotion->discount_type,
            'discount_value' => (float) $promotion->discount_value,
            'starts_at' => $promotion->starts_at?->format('Y-m-d\TH:i'),
            'ends_at' => $promotion->ends_at?->format('Y-m-d\TH:i'),
            'description' => $promotion->description,
            'is_active' => $promotion->is_active,
        ];
    }

    /**
     * @return array<int, array{id: int, name: string}>
     */
    private function establishmentOptions(): array
    {
        $supervisor = $this->supervisor();

        return Establishment::query()
            ->where('organization_id', $supervisor->organization_id)
            ->when($supervisor->establishment_id, fn ($q) => $q->where('id', $supervisor->establishment_id))
            ->orderBy('name')
            ->get(['id', 'name'])
            ->map(fn (Establishment $e) => ['id' => $e->id, 'name' => $e->name])
            ->all();
    }

    /**
     * @return array<string, string>
     */
    private function machineTypeOptions(): array
    {
        return [
            'all' => 'Toutes les machines',
            'washer_small' => 'Lave-linge petit',
            'washer_large' => 'Lave-linge grand',
            'dryer_small' => 'Sèche-linge petit',
            'dryer_large' => 'Sèche-linge grand',
        ];
    }

    /**
     * @return array<string, string>
     */
    private function discountTypeOptions(): array
    {
        return [
            'percent' => 'Pourcentage',
            'fixed' => 'Montant fixe',
        ];
    }
}