var TimeProcessor = require('./timeprocessor').TimeProcessor;
const Messaging = require('./messaging').Messaging;

class TimestampAPI {
  /* 
    Custom paths used for the API. 
  */
  #paths = {
    "conversion": "/:date"
  }  
  
  /*
    Create the time stamp with direct access to the Express instance. 

    @param {Express} instance - The Express instance
  */
  constructor(instance) {
    this[`instance`] = instance;

    // your first API endpoint... 
    instance.get("/api/hello", function (req, res) {
      res.json({greeting: 'hello API'});
    });

    this.conversion();
  }

  /*
    Handle conversion requests. 
  */
  conversion() {
    [`/api`, `/api${this.#paths["conversion"]}`].forEach((PATH) => {
      [`get`, `post`].forEach((METHOD) => {
        this[`instance`][METHOD](PATH, (REQUEST, RESPONSE) => {
          try {
            let RESPONSE_DATA = TimeProcessor.convert((Object.keys(REQUEST.params).length ? REQUEST.params.date : false) ? REQUEST.params.date : (new Date()).toUTCString());
            RESPONSE.json(RESPONSE_DATA);
          } catch(ERROR) {Messaging.exception(RESPONSE, ERROR)}
        })
      })
    })
  }
}

module.exports = {TimestampAPI}