import re

with open('_save_process_definition.php', 'r') as f:
    content = f.read()

old_update_logic = """        if (empty($processId)) {
            // Create new process
            $sql = 'INSERT INTO process_definitions (name, code, definition_json, start_node_id, is_active) VALUES (?, ?, ?, ?, 1)';
            $params = [$name, $code, $definition_json, $start_node];
            $message = 'Process created successfully.';
        } else {
            // Update existing process
            $is_active = isset($_POST['is_active']) ? (int)$_POST['is_active'] : 0;
            $sql = 'UPDATE process_definitions SET name = ?, definition_json = ?, start_node_id = ?, is_active = ? WHERE id = ?';
            $params = [$name, $definition_json, $start_node, $is_active, $processId];
            $message = 'Process updated successfully.';
        }

        $stmt = $pdo->prepare($sql);
        $stmt->execute($params);"""

new_update_logic = """        if (empty($processId)) {
            // Create new process
            $sql = 'INSERT INTO process_definitions (name, code, definition_json, start_node_id, is_active, version, is_latest) VALUES (?, ?, ?, ?, 1, 1, 1)';
            $params = [$name, $code, $definition_json, $start_node];
            $message = 'Process created successfully.';
            $stmt = $pdo->prepare($sql);
            $stmt->execute($params);
        } else {
            // "Update" existing process by creating a new version
            $stmt_old = $pdo->prepare('SELECT code, version, sort_order, is_active FROM process_definitions WHERE id = ?');
            $stmt_old->execute([$processId]);
            $old = $stmt_old->fetch();
            
            if ($old) {
                $is_active = isset($_POST['is_active']) ? (int)$_POST['is_active'] : $old['is_active'];
                $new_version = $old['version'] + 1;
                $db_code = $old['code'];

                // Mark all previous versions as not latest
                $stmt_update = $pdo->prepare('UPDATE process_definitions SET is_latest = 0 WHERE code = ?');
                $stmt_update->execute([$db_code]);

                // Insert new version
                $sql = 'INSERT INTO process_definitions (name, code, definition_json, start_node_id, is_active, version, supersedes_definition_id, is_latest, sort_order) VALUES (?, ?, ?, ?, ?, ?, ?, 1, ?)';
                $params = [$name, $db_code, $definition_json, $start_node, $is_active, $new_version, $processId, $old['sort_order']];
                $stmt = $pdo->prepare($sql);
                $stmt->execute($params);
                $message = 'Process updated successfully (new version created).';
            } else {
                throw new WorkflowRuleFailedException('Process not found.');
            }
        }"""

content = content.replace(old_update_logic, new_update_logic)

with open('_save_process_definition.php', 'w') as f:
    f.write(content)

print("Patched.")