Login Post (API)

public function login_post()
    {
        $username = trim($this->post('username'));
        $password = trim($this->post('password'));
        $this->db->select('*');
        $this->db->from('rtlh_users');
        $this->db->where('user_username', $username);
        $hasiluser = $this->db->get()->row();
        if (count($hasiluser) == 0) {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Username Tidak Terdaftar',
            ];
        } else {
            $this->db->select('u.*, p.penduduk_nama');
            $this->db->from('rtlh_users u');
            $this->db->join('rtlh_penduduk_dukcapil p', 'u.user_username = p.penduduk_nik');
            $this->db->where('u.user_username', $username);
            $this->db->where('u.user_password', sha1($password));
            $this->db->where('u.user_status', 'Aktif');
            $hasilakun = $this->db->get()->row();
            if (count($hasilakun) == 0) {
                $response = [
                    'resp_error' => true,
                    'resp_msg'   => 'Username atau Password Salah.',
                ];
            } else {
                // Jika Operator
                if ($hasiluser->user_level == 'Operator') {
                    $this->db->select('c.nama_kec, k.nama_kel');
                    $this->db->from('rtlh_hak_akses a');
                    $this->db->join('rtlh_kec c', 'a.no_kec=c.no_kec');
                    $this->db->join('rtlh_kel k', 'a.no_kel=k.no_kel');
                    $this->db->where('k.no_kec=c.no_kec');
                    $this->db->where('a.hak_akses_checked', 1);
                    $this->db->where('a.user_username', $username);
                    $hslakses = $this->db->get()->row();

                    $kec = $hslakses->nama_kec;
                    $kel = $hslakses->nama_kel;
                } else {
                    $kec = '';
                    $kel = '';
                }

                if (!empty($hasilakun->user_image)) {
                    $avatar = base_url('img/icon/' . $hasilakun->user_image);
                } else {
                    $avatar = base_url('img/no-image.jpg');
                }

                $response[] = array(
                    'resp_error' => false,
                    'resp_msg'   => 'Success',
                    'username'   => trim($hasilakun->user_username),
                    'nama'       => trim($hasilakun->penduduk_nama),
                    'avatar'     => $avatar,
                    'level'      => trim($hasilakun->user_level),
                    'kecamatan'  => $kec,
                    'kelurahan'  => $kel,
                );
            }
        }
        $this->response($response, 200);
    }