using Microsoft.EntityFrameworkCore;

namespace HyperBooru.Services;

public interface IMediaService {
    public void SetDescription(
        Media media,
        string? shortDescription,
        string? longDescription);

    public void SetIngest(Media media, bool ingest);
}

public class MediaService : IMediaService {
    private IDbContextFactory<HBContext> dbFactory;

    public MediaService(IDbContextFactory<HBContext> dbFactory) =>
        this.dbFactory = dbFactory;

    public void SetIngest(Media media, bool ingest) {
        using var db = dbFactory.CreateDbContext();
        media = db.Media.First(m => m.Guid == media.Guid);
        var ingestTag = db.TagDefinitions
            .First(td => td.Guid == HBContext.IngestTag);

        if(ingest)
            media.Tags.Add(new(ingestTag));
        else
            media.Tags.RemoveAll(t => t.TagDefinition.Guid == ingestTag.Guid);

        db.SaveChanges();
    }

    public void SetDescription(
        Media media,
        string? shortDescription,
        string? longDescription) {

        using var db = dbFactory.CreateDbContext();
        var m = db.Media.First(m => m.Guid == media.Guid);

        shortDescription = shortDescription?.Trim();
        longDescription  = longDescription?.Trim();

        if(string.IsNullOrEmpty(shortDescription))
            shortDescription = null;
        if(string.IsNullOrEmpty(longDescription))
            longDescription = null;

        m.ShortDescription = shortDescription;
        m.LongDescription  = longDescription;

        db.SaveChanges();
    }
}