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)
		{
			await SyncLanguages(dbClient);
			await UpdateNewLanguages(dbClient);
		}

		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.Default.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 DB.Default.SaveAsync(bgLang);
			}
		}
	}
}