using System.Text.Json;
using DotBased.Logging;
using DotBased.Monads;
using Manager.YouTube.Models;
using Manager.YouTube.Models.Parser;
using Manager.YouTube.Util.Converters;

namespace Manager.YouTube.Parsers.Json;

public static class VideoJsonParser
{
    private static readonly JsonSerializerOptions VideoParserOptions = new() { Converters = { new YouTubeVideoJsonConverter() } };
    private static readonly ILogger Logger = LogService.RegisterLogger(typeof(VideoJsonParser), "Video JSON parser");
    
    public static Result<YouTubeVideo> ParseVideoData(YouTubeVideoData videoData)
    {
        if (videoData.YouTubeInitialData == null || videoData.YouTubeInitialData.Count == 0)
        {
            return ResultError.Fail("No initial video data found!");
        }

        YouTubeVideo? video;
        try
        {
            video = videoData.YouTubeInitialData.Deserialize<YouTubeVideo>(VideoParserOptions);
        }
        catch (Exception e)
        {
            Logger.Error(e, "Failed to parse video data");
            return ResultError.Fail("Failed to parse video data");
        }
        
        return video != null? video : ResultError.Fail("Failed to parse video data!");
    }
}