<?php

namespace App\Http\Controllers;

use App\Enums\PurchasingRole;
use App\Models\Budget;
use App\Models\BudgetReinforcement;
use App\Models\CostCenter;
use App\Services\CommonBudget;
use App\Services\ConflictGuard;
use App\Services\CurrentActor;
use Brick\Math\BigDecimal;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\Rule;
use Inertia\Inertia;
use Inertia\Response;

class BudgetController extends Controller
{
    private function access(Request $request): void
    {
        abort_unless($request->user()->hasFunctions([PurchasingRole::Admin, PurchasingRole::Finance]), 403);
    }

    public function index(Request $request): Response
    {
        $this->access($request);

        return Inertia::render('budgets/index', ['centers' => CostCenter::query()->orderBy('code')->get(), 'budgets' => Budget::query()->latest('id')->get()->map(function (Budget $budget) use ($request) {
            $adapter = app(CommonBudget::class);

            return [...$budget->toArray(), ...$adapter->execute(fn () => $adapter->for($request->user())->balance($budget->id))];
        }), 'reinforcements' => BudgetReinforcement::query()->latest('id')->paginate(20)]);
    }

    public function store(Request $request): RedirectResponse
    {
        $this->access($request);
        $data = $request->validate(['cost_center_id' => ['required', 'integer', Rule::exists('cost_centers', 'id')->where('tenant_id', $request->user()->tenant_id)], 'year' => 'required|integer|min:2026|max:2100', 'includes_tax' => 'required|boolean', 'amount' => ['required', 'regex:/^\d{1,12}(\.\d{1,2})?$/'], 'reason' => 'required|string|max:4000']);
        $kind = $request->validate(['kind' => ['sometimes', Rule::in(['operating', 'investment'])]])['kind'] ?? 'operating';
        DB::transaction(function () use ($request, $data, $kind) {
            app(ConflictGuard::class)->lockCompany($request->user());
            app(CurrentActor::class)->lock($request->user(), [PurchasingRole::Admin, PurchasingRole::Finance]);
            $adapter = app(CommonBudget::class);
            $adapter->execute(fn () => $adapter->for($request->user())->create(['cost_center_id' => (int) $data['cost_center_id'], 'year' => (int) $data['year'], 'kind' => $kind, 'includes_tax' => (bool) $data['includes_tax'], 'amount_minor' => BigDecimal::of($data['amount'])->multipliedBy(100)->toInt(), 'reason' => $data['reason']]));
        });

        return back();
    }

    public function approve(Request $request, Budget $budget): RedirectResponse
    {
        $this->access($request);
        DB::transaction(function () use ($request, $budget) {
            app(ConflictGuard::class)->lockCompany($request->user());
            app(CurrentActor::class)->lock($request->user(), [PurchasingRole::Admin, PurchasingRole::Finance]);
            $adapter = app(CommonBudget::class);
            $adapter->execute(fn () => $adapter->for($request->user())->approve($budget->id));
        });

        return back();
    }
}