using PostFundManagement.Domain;
using PostFundManagement.Domain.Abstractions;
using PostFundManagement.Domain.Api;
using PostFundManagement.Domain.Extensions;
using PostFundManagement.Infrastructure.Database;

namespace PostFundManagement.Api.Endpoints.Grants;

[ApiVersionTarget(1)]
public class ExecuteContractEndpoint : IEndpoint
{
    public record ExecuteContractRequest(string ExternalSignatureId, string SignedDocumentUrl);

    public void Map(IEndpointRouteBuilder builder)
    {
        builder.MapPost("api/grants/contracts/{id:long}/execute", async (long id, ExecuteContractRequest request, 
            ClaimsPrincipal principal, IDbContextFactory<ApplicationDbContext> contextFactory, CancellationToken cancellationToken = default) =>
        {
            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);

            var contract = await context.Contracts.FirstOrDefaultAsync(c => c.Id == id, cancellationToken);

            if (contract == null)
                return Results.NotFound($"Contract with ID {id} does not exist.");

            contract.ExternalSignatureId = request.ExternalSignatureId;
            contract.SignedDocumentUrl = request.SignedDocumentUrl;
            contract.Status = ContractStatus.Active;

            context.Contracts.Update(contract);

            return await context.SaveChangesAsync(cancellationToken) > 0
                ? Results.Ok(contract)
                : Results.BadRequest("Failed to execute contract");
        })
        .RequireAuthorization()
        .WithDescription("Execute the contract and lock the contractual version")
        .WithName(typeof(ExecuteContractEndpoint).ToEndpointName())
        .MapToApiVersion(new ApiVersion(1))
        .Produces<Domain.Entities.Contract>(StatusCodes.Status200OK)
        .Produces(StatusCodes.Status404NotFound)
        .Produces(StatusCodes.Status401Unauthorized)
        .WithTags(EndpointTags.Grants);
    }
}