const mdl_UserActivity = require('../models/users/user_activity.mdl');

/**
 * Fire-and-forget activity logger. Never throws — failures are console-logged only.
 *
 * @param {number}  userId
 * @param {string}  action      — e.g. 'login', 'submit_task', 'deactivate_user'
 * @param {Object}  [opts]
 * @param {string}  [opts.entityType] — e.g. 'user', 'task', 'lesson'
 * @param {number}  [opts.entityId]
 * @param {number}  [opts.sessionId]
 * @param {Object}  [opts.details]    — free-form JSONB context
 */
function logActivity(userId, action, { entityType = null, entityId = null, sessionId = null, details = null } = {}) {
  const numericId = entityId !== null ? Number(entityId) : null;
  mdl_UserActivity.create({
    user_id:     userId,
    action,
    entity_type: entityType,
    entity_id:   Number.isFinite(numericId) ? numericId : null,
    session_id:  sessionId,
    details,
  }).catch((err) => console.error('[USER_ACTIVITY] Failed to log:', action, err.message));
}

module.exports = logActivity;