<?php
/**
 * migrate_067_requisito_residual_and_actions.php — Integrazione "Modulo Azioni" (Simon), Fase 1.
 * (1) org_requisito_state += residual_likelihood, residual_impact (TINYINT NULL, scala 1-5).
 * (2) requisito_actions (azioni collegate al rischio-da-requisito).
 * Additiva e IDEMPOTENTE. Nessun dato esistente toccato.
 *
 * Eseguire (host): docker exec nis2-app php /var/www/nis2-agile/application/cli/migrate_067_requisito_residual_and_actions.php
 */
if (PHP_SAPI !== 'cli') { http_response_code(403); exit("CLI only\n"); }
require_once __DIR__ . '/../config/env.php';
require_once __DIR__ . '/../config/database.php';

$pdo = Database::getInstance();

function colExists(PDO $pdo, string $table, string $col): bool {
    $st = $pdo->prepare(
        "SELECT 1 FROM information_schema.COLUMNS
         WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ? AND COLUMN_NAME = ?"
    );
    $st->execute([$table, $col]);
    return (bool) $st->fetchColumn();
}
function tblExists(PDO $pdo, string $table): bool {
    $st = $pdo->prepare(
        "SELECT 1 FROM information_schema.TABLES
         WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ?"
    );
    $st->execute([$table]);
    return (bool) $st->fetchColumn();
}

$adds = [
    'residual_likelihood' => "ADD COLUMN residual_likelihood TINYINT NULL COMMENT 'Probabilita residua 1-5' AFTER impact",
    'residual_impact'     => "ADD COLUMN residual_impact TINYINT NULL COMMENT 'Impatto residuo 1-5' AFTER residual_likelihood",
];
foreach ($adds as $col => $clause) {
    if (colExists($pdo, 'org_requisito_state', $col)) { echo "  - $col gia presente, skip\n"; continue; }
    $pdo->exec("ALTER TABLE org_requisito_state $clause");
    echo "  + aggiunta colonna org_requisito_state.$col\n";
}

if (tblExists($pdo, 'requisito_actions')) {
    echo "  - tabella requisito_actions gia presente, skip\n";
} else {
    $pdo->exec(
        "CREATE TABLE requisito_actions (
            id INT AUTO_INCREMENT PRIMARY KEY,
            organization_id INT NOT NULL,
            requisito_id INT NOT NULL,
            risk_code VARCHAR(64) NULL,
            description TEXT NOT NULL,
            status ENUM('bozza','in_corso','archiviata') NOT NULL DEFAULT 'bozza',
            created_by INT NULL,
            created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
            updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
            INDEX idx_reqact_org_req (organization_id, requisito_id, created_at),
            INDEX idx_reqact_org (organization_id, created_at)
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci"
    );
    echo "  + creata tabella requisito_actions\n";
}

echo "Migrazione 067 — residuo + requisito_actions OK. Prossima mig=068.\n";