using System;
using System.Data;
using System.Text.RegularExpressions;
using Insight.Database;
namespace Database.Tenants
{

	public class Setup
	{
		private readonly IDbConnection _db;

		public Setup(IDbConnection db)
		{
			_db = db;
		}

		public async Task CreateTenantInDatabase(string schema, string user, string password)
		{
			if (!Regex.IsMatch(schema, "^[a-zA-Z0-9_]+$"))
				throw new ArgumentException("Invalid schema name");


			await CreateUser(user, password);
			await CreateSchema(schema);
			await GrantSchemaRights(schema, user);

			await CreateNavigationLinkTemplatesTable(schema);
			await CreateNavigationLinkTemplateTranslationsTable(schema);
		}

		private async Task CreateSchema(string schema)
		{
			var sql = $"CREATE SCHEMA IF NOT EXISTS {schema}";
			await _db.ExecuteAsync(sql);
		}
		private async Task CreateUser(string user, string password)
		{
			var sql = $"CREATE USER {user} WITH PASSWORD '{password}';";
			await _db.ExecuteAsync(sql);
		}

		private async Task GrantSchemaRights(string schema, string user)
		{
			var sql = $"GRANT USAGE ON SCHEMA {schema} TO {user};";
			await _db.ExecuteAsync(sql);

			var sql1 = $"ALTER DEFAULT PRIVILEGES IN SCHEMA {schema} " +
					$"GRANT ALL PRIVILEGES ON TABLES TO {user};";
			await _db.ExecuteAsync(sql1);

			var sql2 = $"GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA {schema} TO {user};";
			await _db.ExecuteAsync(sql2);



		}
		//private async Task CreatePermissionTypesTable(string schema)
		//{
		//    var sql = $@"
		//   CREATE TABLE IF NOT EXISTS {schema}.permission_types (
		//       id SERIAL PRIMARY KEY,
		//       name VARCHAR(100) NOT NULL UNIQUE
		//   )";
		//    await _db.ExecuteAsync(sql);
		//}

		//private async Task CreatePermissionsTable(string schema)
		//{
		//    var sql = $@"
		//   CREATE TABLE IF NOT EXISTS {schema}.permissions (
		//       id SERIAL PRIMARY KEY,
		//       name VARCHAR(100) NOT NULL UNIQUE,
		//       type_id INTEGER NOT NULL,
		//       FOREIGN KEY (type_id) REFERENCES {schema}.permission_types(id)
		//   )";
		//    await _db.ExecuteAsync(sql);
		//}

		//private async Task CreateRolesTable(string schema)
		//{
		//    var sql = $@"
		//   CREATE TABLE IF NOT EXISTS {schema}.roles (
		//       id SERIAL PRIMARY KEY,
		//       name VARCHAR(100) NOT NULL UNIQUE
		//   )";
		//    await _db.ExecuteAsync(sql);
		//}

		//private async Task CreateRolePermissionsTable(string schema)
		//{
		//    var sql = $@"
		//   CREATE TABLE IF NOT EXISTS {schema}.role_permissions (
		//       role_id INTEGER NOT NULL,
		//       permission_id INTEGER NOT NULL,
		//       PRIMARY KEY (role_id, permission_id),
		//       FOREIGN KEY (role_id) REFERENCES {schema}.roles(id),
		//       FOREIGN KEY (permission_id) REFERENCES {schema}.permissions(id)
		//   )";
		//    await _db.ExecuteAsync(sql);
		//}

		private async Task CreateNavigationLinkTemplatesTable(string schema)
		{
			var sql = $@"
           CREATE TABLE IF NOT EXISTS {schema}.navigation_link_templates (
               id SERIAL PRIMARY KEY,
               parent_id INTEGER NULL,
               url VARCHAR(500) NOT NULL,
               permission_id INTEGER NULL,
               icon VARCHAR(100) NULL,
               default_order INTEGER NOT NULL,
               FOREIGN KEY (permission_id) REFERENCES {schema}.permissions(id),
               FOREIGN KEY (parent_id) REFERENCES {schema}.navigation_link_templates(id)
           )";
			await _db.ExecuteAsync(sql);
		}

		private async Task CreateNavigationLinkTemplateTranslationsTable(string schema)
		{
			var sql = $@"
           CREATE TABLE IF NOT EXISTS {schema}.navigation_link_template_translations (
               id SERIAL PRIMARY KEY,
               template_id INTEGER NOT NULL,
               language VARCHAR(10) NOT NULL,
               display_name VARCHAR(100) NOT NULL,
               FOREIGN KEY (template_id) REFERENCES {schema}.navigation_link_templates(id)
           )";
			await _db.ExecuteAsync(sql);
		}
	}


}