const path = require('path');
const { authNodesDir } = require('./paths');
const { readJsonIfExists, writeJson } = require('./fs');

function nodeTokenPath(nodeId) {
  return path.join(authNodesDir, `${nodeId}.json`);
}

async function getNodeToken(nodeId) {
  return readJsonIfExists(nodeTokenPath(nodeId));
}

async function verifyNodeToken(nodeId, token) {
  const record = await getNodeToken(nodeId);
  return Boolean(record && record.node_id === nodeId && record.token === token);
}

async function saveNodeToken(nodeId, token) {
  await writeJson(nodeTokenPath(nodeId), {
    node_id: nodeId,
    token,
    schema_version: 'v1',
    updated_at: new Date().toISOString(),
  });
}

module.exports = {
  getNodeToken,
  verifyNodeToken,
  saveNodeToken,
};