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package com.gravity.gdk.util

import org.joda.time.DateTime
import play.api.libs.json.{JsError, JsSuccess, Json, Reads}

/*
              ___...---''
  ___...---'\'___
''       _.-''  _`'.______\\.
        /_.)  )..-  __..--'\\
       (    __..--''
        '-''\@


 Ⓐ Ⓐ Ⓐ Ⓐ Ⓐ Ⓐ Ⓐ Ⓐ Ⓐ Ⓐ Ⓐ
*/

package object date {
  val unixTimestampJsonReader: Reads[DateTime] = Reads[DateTime](jsVal => jsVal.validate[Long] match {
    case success: JsSuccess[_] => success.map(new DateTime(_))

    // Failed as Long
    case _ =>
      // Try as String => Long => DateTime
      jsVal.validate[String].flatMap(timestampStr => {
        try
          JsSuccess(new DateTime(timestampStr.toLong))
        catch {
          case _: NumberFormatException => JsError(s"$timestampStr not Longable")
        }
      })
  })
}