<?php

namespace App\Http\Controllers;

use App\Enums\PurchasingRole;
use App\Models\ProposalOpening;
use App\Models\PurchaseAward;
use App\Models\Requisition;
use App\Services\ConflictGuard;
use App\Services\ProposalOpeningWorkflow;
use Carbon\CarbonImmutable;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\ValidationException;
use Inertia\Inertia;
use Symfony\Component\HttpFoundation\Response;

class ProposalOpeningController extends Controller
{
    private function access(Request $request, int $requisitionId): Requisition
    {
        abort_unless($request->user()->hasFunctions([PurchasingRole::Admin, PurchasingRole::Procurement, PurchasingRole::Finance, PurchasingRole::DepartmentHead]), 403);

        return Requisition::query()->visibleTo($request->user())->findOrFail($requisitionId);
    }

    public function show(Request $request, Requisition $requisition, ProposalOpeningWorkflow $workflow): Response
    {
        $this->access($request, $requisition->id);
        $proposals = $workflow->proposals($requisition);
        $query = ProposalOpening::query()->where('requisition_id', $requisition->id)->latest('revision');
        $latest = (clone $query)->first();
        $openings = $query->paginate(10)->withQueryString();
        Inertia::encryptHistory();
        $response = Inertia::render('purchases/opening', [
            'requisition' => $requisition->only(['id', 'number', 'justification']), 'proposals' => $proposals, 'basisHash' => $workflow->basis($proposals), 'openings' => $openings,
            'sourceChanged' => $latest && $workflow->basis($proposals) !== $latest->basis_hash,
            'latestId' => $latest->id ?? 0,
            'canRecord' => $request->user()->hasFunctions([PurchasingRole::Procurement]) && $requisition->status === 'approved' && ! PurchaseAward::query()->where('requisition_id', $requisition->id)->exists() && ! app(ConflictGuard::class)->participationBlocked($request->user(), $requisition),
        ])->toResponse($request);
        $response->headers->set('Cache-Control', 'private, no-store, max-age=0');

        return $response;
    }

    public function store(Request $request, Requisition $requisition, ProposalOpeningWorkflow $workflow): RedirectResponse
    {
        $this->access($request, $requisition->id);
        $data = $request->validate([
            'previous_id' => 'required|integer|min:0', 'basis_hash' => 'required|string|size:64',
            'opened_at' => 'required|date_format:Y-m-d\TH:i',
            'timezone' => 'required|in:Africa/Maputo,Africa/Johannesburg,UTC',
            'submission_deadline' => 'nullable|date_format:Y-m-d\TH:i|before_or_equal:opened_at',
            'reference' => 'required|string|min:3|max:150', 'location' => 'required|string|min:3|max:300',
            'reason' => 'required|string|min:10|max:4000', 'notes' => 'nullable|string|max:6000',
            'quotation_ids' => 'required|array|min:1|max:100', 'quotation_ids.*' => 'required|integer|distinct',
            'participants' => 'required|array|min:1|max:50', 'participants.*.name' => 'required|string|min:2|max:150',
            'participants.*' => 'required|array:name,capacity,group',
            'participants.*.capacity' => 'required|string|min:2|max:150', 'participants.*.group' => 'required|in:jury,participant',
            'annexes' => 'nullable|array|max:30', 'annexes.*' => 'required|string|min:3|max:300',
            'snapshot' => 'prohibited', 'tenant_id' => 'prohibited', 'created_by' => 'prohibited',
            'confirmed' => 'accepted',
        ]);
        $opened = CarbonImmutable::createFromFormat('!Y-m-d\TH:i', $data['opened_at'], $data['timezone']);
        if (! $opened || $opened->isFuture()) {
            throw ValidationException::withMessages(['opened_at' => 'A sessão não pode estar no futuro no fuso horário indicado.']);
        }
        $data['opened_at'] = $opened->utc()->format('Y-m-d H:i:s');
        $data['submission_deadline'] = empty($data['submission_deadline']) ? null : CarbonImmutable::createFromFormat('!Y-m-d\TH:i', $data['submission_deadline'], $data['timezone'])->utc()->format('Y-m-d H:i:s');
        $data['quotation_ids'] = array_map(intval(...), $data['quotation_ids']);
        $workflow->record($request->user(), $requisition, $data);

        return back();
    }

    public function print(Request $request, ProposalOpening $opening): Response
    {
        $this->access($request, $opening->requisition_id);

        $response = response()->view('purchases.opening', ['opening' => $opening, 'snapshot' => $opening->snapshot]);
        $response->headers->set('Cache-Control', 'private, no-store, max-age=0');

        return $response;
    }
}