using PostFundManagement.Application.Abstractions;
using PostFundManagement.Application.Abstractions.Services;
using PostFundManagement.Application.Extensions;
using PostFundManagement.Application.Services.Shared;
using PostFundManagement.Domain;
using PostFundManagement.Domain.Models;

namespace PostFundManagement.Application.Services.Governance;

public sealed class GovernanceCacheService(GovernanceService service, IDistributedCache cache) : ServiceCacheBase, IGovernanceService
{
    public async ValueTask<Result> CreateOrganisationAsync(CreateOrganisationRequest request, Guid userId, CancellationToken cancellationToken = default) =>
        await service.CreateOrganisationAsync(request, userId, cancellationToken);

    public async ValueTask<Result<Dashboard>> GetDashboardAsync(CancellationToken cancellationToken = default) =>
        await Result.Try((Func<ValueTask<Result<Dashboard>>>)(async () =>
        {
            var cacheKey = HashService.ToMd5Hash($"getdashboard").Value;

            var cached = await cache.GetStringAsync(cacheKey, cancellationToken);

            if(string.IsNullOrWhiteSpace(cached))
            {
                var result = await service.GetDashboardAsync(cancellationToken);

                if (result.IsFailed) return result;

                await cache.SetStringAsync(cacheKey, result.Value.ToJson(), cacheOptions, cancellationToken);

                return result.Value;
            }

            return Result.Ok(cached.FromJson<Dashboard>());
        }));

    public async ValueTask<Result<Instrument[]>> GetInstrumentsAsync(CancellationToken cancellationToken = default) =>
        await Result.Try((Func<ValueTask<Result<Instrument[]>>>)(async () =>
        {
            var cacheKey = HashService.ToMd5Hash($"getinstruments").Value;

            var cached = await cache.GetStringAsync(cacheKey, cancellationToken);

            if(string.IsNullOrWhiteSpace(cached))
            {
                var result = await service.GetInstrumentsAsync(cancellationToken);

                if (result.IsFailed) return result;

                await cache.SetStringAsync(cacheKey, result.Value.ToJson(), cacheOptions, cancellationToken);

                return result.Value;
            }

            return Result.Ok(cached.FromJson<Instrument[]>());
        }));

    public async ValueTask<Result<Organisation>> GetOrganisationAsync(string organisationIdHash, CancellationToken cancellationToken = default) =>
        await Result.Try((Func<ValueTask<Result<Organisation>>>)(async () =>
        {
            var cacheKey = HashService.ToMd5Hash($"getorganisation-{organisationIdHash}").Value;

            var cached = await cache.GetStringAsync(cacheKey, cancellationToken);

            if (string.IsNullOrWhiteSpace(cached))
            {
                var result = await service.GetOrganisationAsync(organisationIdHash, cancellationToken);

                if (result.IsFailed) return result;

                await cache.SetStringAsync(cacheKey, result.Value.ToJson(), cacheOptions, cancellationToken);

                return result.Value;
            }

            return Result.Ok(cached.FromJson<Organisation>());
        }));

    public async ValueTask<Result<Organisation[]>> GetOrganisationsAsync(Pagination pagination, CancellationToken cancellationToken = default) =>
        await Result.Try((Func<ValueTask<Result<Organisation[]>>>)(async () =>
        {
            var cacheKey = HashService.ToMd5Hash($"getorganisations-{pagination.Page}-{pagination.PageSize}").Value;

            var cached = await cache.GetStringAsync(cacheKey, cancellationToken);

            if (string.IsNullOrWhiteSpace(cached))
            {
                var result = await service.GetOrganisationsAsync(pagination, cancellationToken);

                if (result.IsFailed) return result;

                await cache.SetStringAsync(cacheKey, result.Value.ToJson(), cacheOptions, cancellationToken);

                return result.Value;
            }

            return Result.Ok(cached.FromJson<Organisation[]>());
        }));

    public async ValueTask<Result<Portfolio[]>> GetPorfoliosAsync(CancellationToken cancellationToken = default) =>
        await Result.Try((Func<ValueTask<Result<Portfolio[]>>>)(async () =>
        {
            var cacheKey = HashService.ToMd5Hash($"getportfolios").Value;

            var cached = await cache.GetStringAsync(cacheKey, cancellationToken);

            if (string.IsNullOrWhiteSpace(cached))
            {
                var result = await service.GetPorfoliosAsync(cancellationToken);

                if (result.IsFailed) return result;

                await cache.SetStringAsync(cacheKey, result.Value.ToJson(), cacheOptions, cancellationToken);

                return result.Value;
            }

            return Result.Ok(cached.FromJson<Portfolio[]>());
        }));

    public async ValueTask<Result<Programme[]>> GetProgrammesAsync(CancellationToken cancellationToken = default) =>
        await Result.Try((Func<ValueTask<Result<Programme[]>>>)(async () =>
        {
            var cacheKey = HashService.ToMd5Hash($"getprogrammes").Value;

            var cached = await cache.GetStringAsync(cacheKey, cancellationToken);

            if (string.IsNullOrWhiteSpace(cached))
            {
                var result = await service.GetProgrammesAsync(cancellationToken);

                if (result.IsFailed) return result;

                await cache.SetStringAsync(cacheKey, result.Value.ToJson(), cacheOptions, cancellationToken);

                return result.Value;
            }

            return Result.Ok(cached.FromJson<Programme[]>());
        }));

    public async ValueTask<Result<Organisation>> UpdateOrganisationAsync(UpdateOrganisationRequest request, CancellationToken cancellationToken = default) =>
        await service.UpdateOrganisationAsync(request, cancellationToken);
}