using System.Data;
using Insight.Database;
using PlanTempus.Database.Common;
using PlanTempus.Database.Core;

namespace PlanTempus.Database.Core.DCL
{
    public class SetupOrganization : IDbConfigure<SetupOrganization.Command>
    {
        public class Command
        {
            public required string Schema { get; init; }
            public required string User { get; init; }
            public required string Password { get; init; }
        }

        IDbConnection _db;
        Command _command;

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

        public void With(Command command)
        {

            _command = command;


            if (!Validations.IsValidSchemaName(_command.Schema))
                throw new ArgumentException("Invalid schema name", _command.Schema);

            using (var transaction = _db.BeginTransaction())
            {
                try
                {
                    CreateSchema();
                    CreateRole();
                    GrantSchemaRights();

                    transaction.Commit();
                }
                catch (Exception ex)
                {
                    transaction.Rollback();
                    throw new InvalidOperationException("Failed to SetupOrganization in Database", ex);
                }
            }

        }
        private void ExecuteSql(string sql)
        {
            _db.ExecuteSql(sql);
        }

        private void CreateSchema()
        {
            var sql = $"CREATE SCHEMA IF NOT EXISTS {_command.Schema}";
            ExecuteSql(sql);
        }

        private void CreateRole()
        {
            var sql = $"CREATE ROLE {_command.User} LOGIN PASSWORD '{_command.Password}';";
            ExecuteSql(sql);

            var sql1 = $"ALTER ROLE {_command.User} SET search_path='{_command.Schema}';";
            ExecuteSql(sql1);

        }

        private void GrantSchemaRights()
        {
            var sql = $"GRANT USAGE ON SCHEMA {_command.Schema} TO {_command.User};";
            ExecuteSql(sql);

            var sql1 = $"ALTER DEFAULT PRIVILEGES IN SCHEMA {_command.Schema} " +
                        $"GRANT INSERT, SELECT, UPDATE PRIVILEGES ON TABLES TO {_command.User};";
            ExecuteSql(sql1);

            var sql2 = $"GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA {_command.Schema} TO {_command.User};";
            ExecuteSql(sql2);

            var sql3 = $"GRANT CREATE TABLE ON SCHEMA {_command.Schema} TO {_command.User};";
            ExecuteSql(sql3);
        }
        public void RevokeCreateTable()
        {
            var sql = $"REVOKE CREATE TABLE ON SCHEMA {_command.Schema} FROM {_command.User};";
            ExecuteSql(sql);
        }
    }
}