using Fitness_core_BE.Models.IOs;
using Fitness_core_BE.Services.Workout;
using Fitness_core_BE.Interfaces.Services;

namespace Fitness_core_BE.Services.FunctionHandler
{
    public class WorkoutFunctionHandler
    {
        public readonly Dictionary<string, Func<object, HttpContext, Task<object>>> _functionHandler;

        public WorkoutFunctionHandler(IWorkoutService workoutService)
        {
            _functionHandler = new()
            {
                { "GetWorkoutCategoryList", workoutService.GetWorkoutCategoryList },
                { "CreateWorkoutCategory", workoutService.CreateWorkoutCategory },
                { "GetWorkoutPlanList", workoutService.GetWorkoutPlanList },
                { "GetWorkoutPlanById", workoutService.GetWorkoutPlanById },
                { "GetWorkoutPlanByCustomerId", workoutService.GetWorkoutPlanByCustomerId },
                { "CreateWorkoutPlan", workoutService.CreateWorkoutPlan },
                { "CreateCustomerWorkout", workoutService.CreateCustomerWorkout },
                { "UpdateWorkoutPlan", workoutService.UpdateWorkoutPlan },
                { "DeleteWorkoutPlan", workoutService.DeleteWorkoutPlan },
                { "GetWorkoutItemsByWorkoutPlanId", workoutService.GetWorkoutItemsByWorkoutPlanId },
                { "CreateWorkoutItem", workoutService.CreateWorkoutItem }
            };
        }

        public async Task<ApiResponse<object>> Execute(ApiRequest request, HttpContext httpContext)
        {
            if (!_functionHandler.TryGetValue(request.FunctionName, out var handler))
            {
                return new ApiResponse<object>
                {
                    StatusCode = 404,
                    Message = $"Function '{request.FunctionName}' not found.",
                    Data = null
                };
            }
            try
            {
                var results = await handler(request.Payload, httpContext);
                return new ApiResponse<object>
                {
                    StatusCode = 200,
                    Message = "success",
                    Data = results
                };
            }
            catch (UnauthorizedAccessException ex)
            {
                return new ApiResponse<object>
                {
                    StatusCode = 401,
                    Message = ex.Message,
                    Data = null
                };
            }
            catch (KeyNotFoundException ex)
            {
                return new ApiResponse<object>
                {
                    StatusCode = 400,
                    Message = ex.Message,
                    Data = null
                };
            }
            catch (InvalidOperationException ex)
            {
                return new ApiResponse<object>
                {
                    StatusCode = 400,
                    Message = ex.Message,
                    Data = null
                };
            }
            catch (Exception ex)
            {
                return new ApiResponse<object>
                {
                    StatusCode = 500,
                    Message = $"An error occurred: {ex.Message}",
                    Data = null
                };
            }
        }
    }
}