using MongoDB.Entities;

using PrivaPub.Models.Data;
using PrivaPub.StaticServices;

using System.Text;
using System.Text.Json;

namespace PrivaPub.Data
{
	public static class InitDb
	{
		public static async Task Init(this DbEntities dbClient, IPasswordHasher passwordHasher)
		{
			await SyncLanguages(dbClient);
			await UpdateNewLanguages(dbClient);
			//await SyncUserSettings(dbClient);
			//await ClearUsers(dbClient);
			//var botsInsertionAwaiter = InsertBots(dbClient, passwordHasher);
			//var updateAnswersAwaiter = UpdateAnswersLikes(dbClient);

			//Task.WaitAll(botsInsertionAwaiter);
			//await SyncShareDiscussions(dbClient);
		}

		//static async Task UpdateAnswersLikes(DbCollections dbClient)
		//{
		//	if (await dbClient.AnswersLikes.Find(al => al.AnswerId != null).AnyAsync()) return;

		//	foreach (var answerLikes in await dbClient.AnswersLikes.Find(al => true).ToListAsync())
		//	{
		//		answerLikes.AnswerId = answerLikes.Id;
		//		answerLikes.Id = ObjectId.GenerateNewId();
		//		await dbClient.AnswersLikes.InsertOneAsync(answerLikes);
		//		_ = await dbClient.AnswersLikes.DeleteOneAsync(al => al.Id == answerLikes.AnswerId);
		//	}
		//}

		//static async Task ClearUsers(DbColl dbClient)
		//{
		//	await dbClient.Users.DeleteManyAsync(u => true);
		//	await dbClient.UsersSettings.DeleteManyAsync(u => true);
		//	await dbClient.Answers.DeleteManyAsync(u => true);
		//	await dbClient.AnswersLikes.DeleteManyAsync(u => true);
		//	await dbClient.Comments.DeleteManyAsync(u => true);
		//	await dbClient.EmailRecoveries.DeleteManyAsync(u => true);
		//	await dbClient.Threads.DeleteManyAsync(u => true);
		//	await dbClient.EDiscussions.DeleteManyAsync(u => true);
		//	await dbClient.Logs.DeleteManyAsync(u => true);
		//	await dbClient.ShareDiscussions.De(u => true);
		//	await dbClient.DiscussionFiles.DeleteManyAsync(u => true);
		//	await dbClient.UsersGroups.DeleteManyAsync(u => true);
		//}

		// static async Task SyncShareDiscussions(DbColl dbClient)
		// {
		// 	var anyThread = await dbClient.Discussions.Match(t => true).ExecuteAnyAsync();
		// 	var anyShareDiscussion = await dbClient.ShareDiscussions.Match(st => true).ExecuteAnyAsync();
		//
		// 	if (anyThread == anyShareDiscussion) return;
		//
		// 	var discussions = await dbClient.Discussions.ManyAsync(t => true);
		//
		// 	foreach (var discussion in discussions)
		// 	{
		// 		var newShareDiscussion = new ShareDiscussion
		// 		{
		// 			DiscussionId = discussion.ID,
		// 			InvitationCode = $"{Guid.NewGuid():N}{Guid.NewGuid():N}"
		// 		};
		// 		await newShareDiscussion.SaveAsync();
		// 	}
		// }

		static async Task SyncLanguages(DbEntities dbClient)
		{
			if (await dbClient.Languages.ExecuteAnyAsync()) return;

			var languagesJson = await File.ReadAllTextAsync(Path.Combine(Directory.GetCurrentDirectory(), "Data", "languagesNative.json"), Encoding.UTF8);
			var languagesRows = JsonSerializer.Deserialize<IEnumerable<LanguagesRow>>(languagesJson);

			var languages = new List<Language>();
			foreach (var languageRow in languagesRows ?? new LanguagesRow[]
			         {
			         })
				languages.Add(new Language
				{
					EnglishName = languageRow.EnglishName,
					NativeName = languageRow.NativeName,
					International2Code = languageRow.International2Code
				});

			await DB.SaveAsync(languages);
		}

		static async Task UpdateNewLanguages(DbEntities dbClient)
		{
			var bulgarianLanguage = await dbClient.Languages.Match(l => l.International2Code == "bg").ExecuteFirstAsync();
			if (bulgarianLanguage.NativeName == "Български") return;

			var languagesToUpdate = new Dictionary<string, string>()
			{
				{
					"bg", "Български"
				},
				{
					"cs", "Česky"
				},
				{
					"da", "Dansk"
				},
				{
					"nl", "Nederlands"
				},
				{
					"et", "Eesti"
				},
				{
					"fi", "Suomalainen"
				},
				{
					"el", "Ελληνική"
				},
				{
					"hu", "Magyar"
				},
				{
					"lv", "Latviešu"
				},
				{
					"lt", "Lietuvių kalba"
				},
				{
					"pl", "Polski"
				},
				{
					"pt", "Português"
				},
				{
					"ro", "Românesc"
				},
				{
					"sk", "Slovenská"
				},
				{
					"sl", "Slovenski"
				},
				{
					"sv", "Svenska"
				}
			};

			foreach (var languageToUpdate in languagesToUpdate)
			{
				var bgLang = await dbClient.Languages.Match(l => l.International2Code == languageToUpdate.Key).ExecuteFirstAsync();
				bgLang.NativeName = languageToUpdate.Value;
				await bgLang.SaveAsync();
			}
		}

		// static async Task SyncUserSettings(DbColl dbClient)
		// {
		// 	if (!await dbClient.Users.ExecuteAnyAsync()) return;
		//
		// 	var users = await dbClient.Users.ManyAsync(u => true);
		// 	var usersId = users.Select(u => u.ID).ToList();
		// 	var usersSettings = await dbClient.UsersSettings
		// 		.ManyAsync(us => true);
		//
		// 	var usersWithoutSettings = users.Where(u => !usersSettings.Any(us => us.UserId == u.ID)).Select(u => u.ID).ToList();
		// 	if (usersWithoutSettings.Count == 0) return;
		//
		// 	var defaultLanguage = await dbClient.Languages
		// 		.Match(l => l.International2Code == "en")
		// 		.ExecuteFirstAsync();
		// 	foreach (var userId in usersWithoutSettings)
		// 		await DB.SaveAsync(new UserSettings
		// 		{
		// 			UserId = userId,
		// 			LanguageId = defaultLanguage.International2Code
		// 		});
		// }

		//static async Task InsertBots(DbEntities dbClient, IPasswordHasher passwordHasher)
		//{
		//	if (await dbClient.Users.Match(u => u.UserName == "bot0").ExecuteAnyAsync()) return;

		//	var newBots = new List<User>();
		//	var newBotsUserSettings = new List<UserSettings>();

		//	for (int i = 0; i < 100; i++)
		//		newBots.Add(new User
		//		{
		//			HashedPassword = passwordHasher.Hash("Asdfmov13!!!"),
		//			UserName = $"bot{i}"
		//		});
		//	await newBots.SaveAsync();

		//	var defaultLanguage = await dbClient.Languages
		//		.Match(l => l.International2Code == "en")
		//		.ExecuteFirstAsync();

		//	foreach (var newBot in newBots)
		//		newBotsUserSettings.Add(new()
		//		{
		//			UserId = newBot.ID,
		//			LanguageId = defaultLanguage.International2Code,
		//		});

		//	await newBotsUserSettings.SaveAsync();
		//}
	}
}