#!/usr/bin/env python3
# Copyright 2017 The Australian National University
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


def fib(n):
    if n in (0, 1):
        return 1
    return fib(n - 1) + fib(n - 2)


DEFAULT_SCALE_FACTOR = 10


def target(driver, args):
    from callback import get_callback
    cb_cls = get_callback(args[0])

    def main(argv):
        cb_param = argv[1]

        scale_factor = int(argv[2])
        n = int(argv[3])

        cb = cb_cls(cb_param)
        s = 0

        cb.begin()
        for j in range(scale_factor):
            s += fib(n)
        cb.end()
        cb.report()

        return int(s != fib(n) * scale_factor)

    return main, None

if __name__ == "__main__":
    import sys
    main, _ = target(None, sys.argv[1:])
    main([sys.argv[0]] + sys.argv[2:])