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

    public class SetupUser
    {
        private readonly IDbConnection _db;

        public SetupUser(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);



        }
      
       
    }


}