Fix nested array data on Monitor.put

[alexpresthus]

The issue

In the method Monitor.put, the assertion typeof data == 'object' returns true whether data is an Array or not: https://github.com/cronitorio/cronitor-js/blob/master/lib/monitor.js#L14

static async put(data, rollback = false) {
        if (typeof data == 'object') {
            data = [data];
        } else {
            throw new Errors.MonitorNotCreated('Invalid monitor data.');
        }

This causes data to be reassigned as a nested array when Monitor.put is called with an array as the data parameter, which causes the monitors value in the data of the PUT request to be a nesten array:

const resp = await this._api.axios.put(this._api.monitorUrl(), { monitors: data, rollback });

This behavior results in an HTTP 500 Internal Server Error from the API.

Example using config:

# cronitor.yaml
jobs:
  job-one:
    schedule: 0 2 * * *
    notify:
      - default
    platform: node-cron
    script: job:job-one

  job-two:
    schedule: 30 3,16 * * *
    notify:
      - default
    platform: node-cron
    script: job:job-two

Results in the following AxiosResponse from the API:

AxiosError: Request failed with status code 500
       at settle (/home/alex/krogsveen/git/workers/node_modules/.pnpm/[email protected]/node_modules/axios/dist/node/axios.cjs:1966:12)
       at IncomingMessage.handleStreamEnd (/home/alex/krogsveen/git/workers/node_modules/.pnpm/[email protected]/node_modules/axios/dist/node/axios.cjs:3065:11)
       at IncomingMessage.emit (node:events:530:35)
       at IncomingMessage.emit (node:domain:488:12)
       at endReadableNT (node:internal/streams/readable:1696:12)
       at process.processTicksAndRejections (node:internal/process/task_queues:82:21)
       at Axios.request (/home/alex/krogsveen/git/workers/node_modules/.pnpm/[email protected]/node_modules/axios/dist/node/axios.cjs:3876:41)
       at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
       at async Monitor.put (/home/alex/krogsveen/git/workers/node_modules/.pnpm/[email protected]/node_modules/cronitor/lib/monitor.js:22:26)
       at async Cronitor.applyConfig (/home/alex/krogsveen/git/workers/node_modules/.pnpm/[email protected]/node_modules/cronitor/lib/cronitor.js:56:20)
       at async initializeJobSchedule (/home/alex/krogsveen/git/workers/dist/jobs/loaders/job-schedule.loader.js:37:5)
       at async /home/alex/krogsveen/git/workers/dist/jobs/app.js:18:9 {
    code: 'ERR_BAD_RESPONSE',
    config: {
        ...,
        method: 'put',
        url: 'https://cronitor.io/api/monitors',
        data: '{"monitors":[[{"schedule":"0 2 * * *","notify":["default"],"platform":"node-cron","script":"job:job-one","key":"job-one","type":"job"},{"schedule":"30 3,16 * * *","notify":["default"],"platform":"node-cron","script":"job:job-two","key":"job-two","type":"job"}]],"rollback":false}'
    },
    res: IncomingMessage {
        ...,
        statusCode: 500,
        statusMessage: 'Internal Server Error',
        ...,
      },
    ...,
}

Which outputs the error message from applyConfig:

Error applying config: Error: Request failed with status code 500

The fix

Add a condition if (!Array.isArray(data)) to make sure the data param is only reassigned into an array if the initial data param is not an array.