using System.Collections.Generic;
using System.Linq;
using SepCore.Definition;
using SepCore.Procedure;
using Random = UnityEngine.Random;

namespace SepCore.UI
{
    public class SelectRoleUseCase : IUIUseCase
    {
        private readonly IProcedureMenu _procedureMenu;

        public string SelectedRoleName { get; private set; }

        public SelectRoleUseCase(IProcedureMenu procedureMenu)
        {
            _procedureMenu = procedureMenu;
        }

        public SelectRoleRawData CreateModel()
        {
            return BuildModel(null);
        }

        public SelectRoleRawData SelectRole(string roleName)
        {
            SelectedRoleName = roleName;
            return BuildModel(roleName);
        }

        public SelectRoleRawData ClearSelection()
        {
            SelectedRoleName = null;
            return BuildModel(null);
        }

        public bool ConfirmSelectedRole()
        {
            var roles = GameEntry.Luban.GetTable<RoleConfig>();
            var config = GameEntry.Luban.Get<RoleConfig>(SelectedRoleName);
            if (string.IsNullOrEmpty(SelectedRoleName) || config == null)
            {
                int randomIndex = Random.Range(0, roles.Count);
                SelectedRoleName = roles[randomIndex].Name;
            }

            _procedureMenu.ConfirmSelectRole(SelectedRoleName);
            return true;
        }

        private SelectRoleRawData BuildModel(string selectedRoleName)
        {
            IReadOnlyList<RoleConfig> roles = GameEntry.Luban.GetTable<RoleConfig>();
            int count = roles.Count;
            RoleItemRawData[] roleItems = new RoleItemRawData[count];
            for (int i = 0; i < count; i++)
            {
                roleItems[i] = new RoleItemRawData
                {
                    RoleName = roles[i].Name,
                    IconName = roles[i].Sprite
                };
            }

            RoleConfig selectedRole = string.IsNullOrEmpty(selectedRoleName)
                ? null
                : roles.FirstOrDefault(r => r.Name == selectedRoleName);
            RolePropertyAreaRawData selectedRoleData = selectedRole == null
                ? null
                : new RolePropertyAreaRawData
                {
                    Name = selectedRole.Name,
                    InitialProperties = selectedRole.Modifiers
                };

            return new SelectRoleRawData
            {
                RoleItems = roleItems,
                SelectedRole = selectedRoleData
            };
        }
    }
}