using System.Linq;
using System.Text.RegularExpressions;
using Learn.Models;

namespace Learn.Parsers;

public class NormalParser : ItemParser
{
    private string ParseSeason(string season)
    {
        if (int.TryParse(season, out _)) return season;
        
        switch (season)
        {
            case "零": return "0";
            case "一": return "1";
            case "二": return "2";
            case "三": return "3";
            case "四": return "4";
            case "五": return "5";
            case "六": return "6";
            case "七": return "7";
            case "八": return "8";
            case "九": return "9";
        }
        return season;
    }
    
    public bool DoParse(TreeNode node)
    {
        var item = node.Info;
        var name = item.Name();
        var matches = Regex.Matches(name, @"[^\[\]_]+").Select(match => match.Value).ToArray();

        if (matches.Length == 1)
        {
            node.Info.SetRawTitle(matches[0]);
            return true;
        }

        if (matches.Length >= 2)
        {
            node.Info.SetGroupIfNotExist(matches[0]);

            var title = matches[1].Trim();
            var match = Regex.Match(title, "(.+)第(.+)季");
            if (match.Success)
            {
                node.Info.SetSeasonIfNotExist(ParseSeason(match.Groups[2].Value.Trim()));                      
                node.Info.SetRawTitle(match.Groups[1].Value.Trim());
            }
            else
            {
                node.Info.SetRawTitle(title);
            }
        }
        
        
        return true;
    }
}