<?php

declare(strict_types=1);

namespace App\Controllers;

use App\Core\Access;
use App\Core\Csrf;
use App\Core\JsonResponse;
use App\Core\Request;
use App\Models\AgentModel;
use App\Models\StructureModel;
use App\Models\TeamModel;
use DateTimeImmutable;
use PDO;
use Throwable;

final class TeamController
{
    private TeamModel $teamModel;
    private AgentModel $agentModel;
    private StructureModel $structureModel;
    private Access $access;

    public function __construct(private PDO $pdo)
    {
        $this->teamModel = new TeamModel($pdo);
        $this->agentModel = new AgentModel($pdo);
        $this->structureModel = new StructureModel($pdo);
        $this->access = new Access($pdo);
    }

    public function index(): void
    {
        $this->access->requireService();
        if (($_SERVER['REQUEST_METHOD'] ?? 'GET') === 'GET') {
            $start = trim((string) ($_GET['date_debut'] ?? '')) ?: null;
            $end = trim((string) ($_GET['date_fin'] ?? '')) ?: null;
            JsonResponse::send(200, ['teams' => $this->teamModel->all($start, $end)]);
        }

        Request::requireMethod('POST');
        $payload = Request::json();
        Csrf::assertPayload($payload);

        $structureId = filter_var($payload['structure_id'] ?? null, FILTER_VALIDATE_INT);
        $type = strtoupper(trim((string) ($payload['type_equipe'] ?? '')));
        $label = trim((string) ($payload['libelle'] ?? ''));
        $start = trim((string) ($payload['date_debut'] ?? ''));
        $end = trim((string) ($payload['date_fin'] ?? ''));
        $startDate = DateTimeImmutable::createFromFormat('!Y-m-d', $start);
        $endDate = DateTimeImmutable::createFromFormat('!Y-m-d', $end);

        if (!$structureId || $this->structureModel->findActive((int) $structureId) === null
            || !in_array($type, ['MERCREDI_PERISCOLAIRE', 'EXTRASCOLAIRE', 'PERISCOLAIRE_SEMAINE'], true)
            || $label === '' || !$startDate || !$endDate
            || $startDate->format('Y-m-d') !== $start || $endDate->format('Y-m-d') !== $end
            || $endDate < $startDate) {
            JsonResponse::send(422, ['error' => 'Les informations de l’équipe sont incomplètes ou invalides.']);
        }

        $under6 = max(0, (int) ($payload['nombre_enfants_moins_6'] ?? 0));
        $over6 = max(0, (int) ($payload['nombre_enfants_6_plus'] ?? 0));
        $ratioUnder6 = max(1, (int) ($payload['ratio_moins_6'] ?? 8));
        $ratioOver6 = max(1, (int) ($payload['ratio_6_plus'] ?? 12));
        $minAgents = max(1, (int) ($payload['minimum_agents'] ?? 1));
        $qualified = (float) ($payload['pourcentage_diplomes_min'] ?? 50);
        if ($qualified < 0 || $qualified > 100) {
            JsonResponse::send(422, ['error' => 'Le pourcentage minimal de diplômés doit être compris entre 0 et 100 %.']);
        }

        try {
            $id = $this->teamModel->create([
                'id_structure' => (int) $structureId,
                'type_equipe' => $type,
                'libelle' => $label,
                'date_debut' => $start,
                'date_fin' => $end,
                'nombre_enfants_moins_6' => $under6,
                'nombre_enfants_6_plus' => $over6,
                'ratio_moins_6' => $ratioUnder6,
                'ratio_6_plus' => $ratioOver6,
                'minimum_agents' => $minAgents,
                'pourcentage_diplomes_min' => $qualified,
                'commentaire' => trim((string) ($payload['commentaire'] ?? '')) ?: null,
            ]);
            JsonResponse::send(201, ['message' => 'L’équipe a été créée.', 'id_equipe' => $id]);
        } catch (Throwable $e) {
            JsonResponse::send(500, ['error' => 'Impossible de créer l’équipe.', 'details' => $e->getMessage()]);
        }
    }

    public function member(): void
    {
        $this->access->requireService();
        Request::requireMethod('POST');
        $payload = Request::json();
        Csrf::assertPayload($payload);

        $action = strtoupper(trim((string) ($payload['action'] ?? 'ADD')));
        $teamId = filter_var($payload['team_id'] ?? null, FILTER_VALIDATE_INT);
        $agentId = filter_var($payload['agent_id'] ?? null, FILTER_VALIDATE_INT);
        if (!$teamId || !$agentId || $this->agentModel->findActive((int) $agentId) === null) {
            JsonResponse::send(422, ['error' => 'Équipe ou agent invalide.']);
        }

        if ($action === 'REMOVE') {
            $deleted = $this->teamModel->removeMember((int) $teamId, (int) $agentId);
            JsonResponse::send($deleted ? 200 : 404, ['message' => $deleted ? 'L’agent a été retiré de l’équipe.' : 'Affectation introuvable.']);
        }

        $function = strtoupper(trim((string) ($payload['fonction_equipe'] ?? 'ANIMATION')));
        if (!in_array($function, ['RESPONSABLE', 'ANIMATION', 'RESTAURATION_ENTRETIEN'], true)) {
            JsonResponse::send(422, ['error' => 'Fonction dans l’équipe invalide.']);
        }

        try {
            $this->teamModel->addMember(
                (int) $teamId,
                (int) $agentId,
                $function,
                trim((string) ($payload['commentaire'] ?? '')) ?: null
            );
            JsonResponse::send(200, ['message' => 'L’agent a été ajouté à l’équipe.']);
        } catch (Throwable $e) {
            JsonResponse::send(422, ['error' => $e->getMessage()]);
        }
    }

    public function status(): void
    {
        $this->access->requireService();
        Request::requireMethod('POST');
        $payload = Request::json();
        Csrf::assertPayload($payload);
        $teamId = filter_var($payload['team_id'] ?? null, FILTER_VALIDATE_INT);
        $status = strtoupper(trim((string) ($payload['statut'] ?? '')));
        if (!$teamId || !in_array($status, ['BROUILLON', 'A_CONTROLER', 'VALIDEE'], true)) {
            JsonResponse::send(422, ['error' => 'Équipe ou statut invalide.']);
        }
        $this->teamModel->setStatus((int) $teamId, $status);
        JsonResponse::send(200, ['message' => 'Le statut de l’équipe a été mis à jour.']);
    }
}