<?php

declare(strict_types=1);

namespace App\Models;

final class SchemaModel extends BaseModel
{
    public function assertCurrent(): void
    {
        $requiredTables = [
            'agent',
            'structure',
            'agent_structure',
            'motif_planning',
            'semaine',
            'planning',
            'creneau_horaire',
            'quota_agent_annuel',
            'modele_semaine_agent',
            'modele_semaine_creneau',
            'structure_couverture_horaire',
            'periode_vacance',
            'poste_agent',
            'pta_annuel',
            'agent_structure_souhait',
            'agent_contrainte',
            'equipe_pta',
            'equipe_pta_membre',
            'structure_creneau_reference',
        ];

        $placeholders = implode(',', array_fill(0, count($requiredTables), '?'));
        $stmt = $this->pdo->prepare(
            "SELECT TABLE_NAME
             FROM information_schema.TABLES
             WHERE TABLE_SCHEMA = DATABASE()
               AND TABLE_NAME IN ($placeholders)"
        );
        $stmt->execute($requiredTables);
        $existing = $stmt->fetchAll(\PDO::FETCH_COLUMN);
        $missingTables = array_values(array_diff($requiredTables, $existing));

        if ($missingTables) {
            throw new \RuntimeException(
                'Base PTA incomplète : table(s) manquante(s) : '
                . implode(', ', $missingTables)
                . '. Exécutez database/install_complet.sql ou les migrations nécessaires.'
            );
        }

        $requiredColumns = [
            'creneau_horaire' => ['id_motif'],
            'planning' => ['date_validation'],
            'agent' => ['email', 'telephone', 'adresse', 'est_diplome', 'diplome_libelle', 'id_structure', 'id_poste', 'type_contrat', 'date_debut_contrat', 'date_fin_contrat', 'formation_repartition_annuelle', 'commentaire_pta'],
            'structure' => ['type_affectation'],
        ];

        foreach ($requiredColumns as $table => $columns) {
            $columnPlaceholders = implode(',', array_fill(0, count($columns), '?'));
            $params = array_merge([$table], $columns);
            $columnStmt = $this->pdo->prepare(
                "SELECT COLUMN_NAME
                 FROM information_schema.COLUMNS
                 WHERE TABLE_SCHEMA = DATABASE()
                   AND TABLE_NAME = ?
                   AND COLUMN_NAME IN ($columnPlaceholders)"
            );
            $columnStmt->execute($params);
            $existingColumns = $columnStmt->fetchAll(\PDO::FETCH_COLUMN);
            $missingColumns = array_values(array_diff($columns, $existingColumns));

            if ($missingColumns) {
                throw new \RuntimeException(sprintf(
                    'Base PTA incomplète : colonne(s) manquante(s) dans %s : %s.',
                    $table,
                    implode(', ', $missingColumns)
                ));
            }
        }
    }
}