using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Extensions.Logging;
using Schaad.Accounting.Interfaces;
using Schaad.Accounting.Models;

namespace Schaad.Accounting.Repositories
{
    public class SubclassRepository : BaseRepository, ISubclassRepository
    {
        private readonly Dictionary<int, string> classes = new Dictionary<int, string>();
        private readonly string SUBCLASSES = "SubClasses.xml";

        public SubclassRepository(ISettingsService settingsService, RepositoryCache cache, ILogger<SubclassRepository> logger)
            : base(settingsService, cache, logger)
        {
            EnsureFileExists(SUBCLASSES);

            classes.Add(ClassIds.Activa, "Aktiven");
            classes.Add(ClassIds.Passiva, "Passiven");
            classes.Add(ClassIds.Income, "Einnahmen");
            classes.Add(ClassIds.Expenses, "Ausgaben");
        }

        /// <summary>
        /// Load subclasses
        /// </summary>
        public List<SubClass> GetSubClassList() => LoadList<SubClass>(SUBCLASSES);

        /// <summary>
        /// Save a subclass (insert/update)
        /// </summary>
        public void SaveSubClass(SubClass subClass)
        {
            var subclasses = GetSubClassList();
            var idx = subclasses.FindIndex(s => s.Id == subClass.Id);
            if (idx >= 0)
            {
                subclasses[idx] = subClass;
            }
            else
            {
                subClass.Id = Guid.NewGuid().ToString();
                subclasses.Add(subClass);
            }
            Save(subclasses, SUBCLASSES);
        }

        /// <summary>
        /// Get subclass
        /// </summary>
        public SubClass GetSubClass(string id)
        {
            var subclasses = GetSubClassList();
            return subclasses.FirstOrDefault(t => t.Id == id);
        }
        
        public void DeleteSubClass(string id)
        {
            var subclasses = GetSubClassList();
            subclasses.RemoveAll(t => t.Id == id);
            Save(subclasses, SUBCLASSES);
        }

        public Dictionary<int, string> GetClasses()
        {
            return classes;
        }

        public string GetClass(int classId)
        {
            return classes[classId];
        }
    }
}