using System;
using System.Globalization;
using UnityEngine;
using sam;

[CreateAssetMenu(fileName = "ERSAreaDateExtractionFunc", menuName = "Date Extraction Funcs/ERS (AREA)")]
public class ERSAreaDateExtractionFunc : DateExtractionFunc
{
    // eg: AT1_AR__2PURAL19920617_193118_000000004003_00170_04824_0000_19920617_211142_iOS.E1.gz
    public override (DateTime, DateTime) ExtractDatesFromFilename(string filename)
    {
        // eg: 19911101_225655
        string format = "yyyyMMdd_HHmmss";

        int li = filename.IndexOf("PURAL");
        string s = filename.Substring(li + 5, 15);
        DateTime st = DateTime.ParseExact(s, format, CultureInfo.InvariantCulture);
        //Debug.Log($"start-time: {s} parsed as {st}");

        string[] ss = filename.Split('_');
        s = ss[ss.Length - 3] + "_" + ss[ss.Length - 2];
        DateTime et = DateTime.ParseExact(s, format, CultureInfo.InvariantCulture);
        //Debug.Log($"end-time: {s} parsed as {et}");

        return (st, et);
    }
}