using FreeTubeSync.Model;

namespace FreeTubeSync.EndPoints;

public static class ProfileEndpoint
{
    public static void MapProfileEndpoints(this WebApplication app)
    {
        var group = app.MapGroup("profile");

        group.MapGet("/", GetAllProfiles);
        group.MapGet("/{id}", GetProfile);
        group.MapPost("/", UpdateProfile);
        group.MapDelete("/{id}", DeleteProfile);
    }

    private static async Task<IResult> GetAllProfiles(IRepository<Profile> repository, CancellationToken ct)
    {
        var results = await repository.GetAllAsync(ct);
        return Results.Ok(results);
    }

    private static async Task<IResult> GetProfile(IRepository<Profile> repository, string id, CancellationToken ct)
    {
        var result = await repository.GetByIdAsync(id, ct);
        return result == null ? Results.NotFound() : Results.Ok(result);
    }

    private static async Task<IResult> UpdateProfile(IRepository<Profile> repository, Profile profile, CancellationToken ct, ILogger<Program> logger)
    {
        var res = await repository.GetByIdAsync(profile._id, ct);
        if (res == null)
        {
            try
            {
                logger.LogInformation("Profile {id} does not exist, adding it to the database", profile._id);
                await repository.AddAsync(profile, ct);
            }
            catch (Exception)
            {
                logger.LogError("Failed to create profile {json}", profile._id);
                return Results.StatusCode(500);
            }
        }
        else
        {
            logger.LogInformation("Profile {id} exists, updating the database.", profile._id);
            res.UpdateFrom(profile);
            var toRemove = res.subscriptions.Where(sub => !profile.subscriptions.Any(x => x.id == sub.id)).ToList();

            foreach (var sub in toRemove)
                res.subscriptions.Remove(sub);

            foreach (var sub in profile.subscriptions)
            {
                var osub = res.subscriptions.FirstOrDefault(x => x.id == sub.id);
                if (osub == null)
                    res.subscriptions.Add(sub);
                else
                {
                    osub.name = sub.name;
                    osub.thumbnail = sub.thumbnail;
                }
            }

            await repository.UpdateAsync(res, ct);
        }

        return Results.Ok();
    }

    private static async Task<IResult> DeleteProfile(IRepository<Profile> repository, string id, CancellationToken ct)
    {
        var result = await repository.GetByIdAsync(id, ct);
        if (result == null) return Results.NotFound();
        await repository.DeleteAsync(result, ct);
        return Results.Ok();
    }
}