using Microsoft.EntityFrameworkCore;
using System.Linq;
using System.Collections.Generic;
using SZUAbsolventenverein.Module.AdminModules.Models;
using Oqtane.Modules;

namespace SZUAbsolventenverein.Module.AdminModules.Repository
{
    /// <summary>
    /// Repository to manage admin settings in the database.
    /// </summary>
    public interface IAdminSettingsRepository
    {
        /// <summary>
        /// Retrieves the administrative settings entry from the Database.
        /// </summary>
        /// <returns>An <see cref="Models.AdminSetting"/> object containing the settings for the specified module. Returns <see
        /// langword="null"/> if the module is not found.</returns>
        Models.AdminSetting GetAdminSetting();

        /// <summary>
        /// Updates the administrative settings with the specified values.
        /// </summary>
        /// <param name="adminSetting">The new administrative settings to apply. Cannot be null.</param>
        /// <returns>The updated <see cref="Models.AdminSetting"/> object reflecting the applied changes.</returns>
        Models.AdminSetting SetAdminSettings(Models.AdminSetting adminSetting);
    }

    /// <summary>
    /// Implementation of the <see cref="IAdminSettingsRepository"/> interface for managing admin settings in the database.
    /// </summary>
    public class AdminSettingsRepository : IAdminSettingsRepository, ITransientService
    {
        private readonly IDbContextFactory<AdminModulesContext> _factory;

        public AdminSettingsRepository(IDbContextFactory<AdminModulesContext> factory)
        {
            _factory = factory;
        }

        public AdminSetting GetAdminSetting()
        {
            using var db = _factory.CreateDbContext();
            return db.AdminSettings.First();
        }

        public AdminSetting SetAdminSettings(AdminSetting adminSetting)
        {
            using var db = _factory.CreateDbContext();
            db.Entry(adminSetting).State = EntityState.Modified;
            db.SaveChanges();
            return adminSetting;
        }
    }
}