#!/usr/bin/env python

#######################################################
# Copyright (c) 2019, ArrayFire
# All rights reserved.
#
# This file is distributed under 3-clause BSD license.
# The complete license agreement can be obtained at:
# http://arrayfire.com/licenses/BSD-3-Clause
########################################################

import array as host

import arrayfire as af

from . import _util


def simple_index(verbose=False):
    display_func = _util.display_func(verbose)
    a = af.randu(5, 5)
    display_func(a)
    b = af.Array(a)
    display_func(b)

    c = a.copy()
    display_func(c)
    display_func(a[0, 0])
    display_func(a[0])
    display_func(a[:])
    display_func(a[:, :])
    display_func(a[0:3, ])
    display_func(a[-2:-1, -1])
    display_func(a[0:5])
    display_func(a[0:5:2])

    idx = af.Array(host.array("i", [0, 3, 2]))
    display_func(idx)
    aa = a[idx]
    display_func(aa)

    a[0] = 1
    display_func(a)
    a[0] = af.randu(1, 5)
    display_func(a)
    a[:] = af.randu(5, 5)
    display_func(a)
    a[:, -1] = af.randu(5, 1)
    display_func(a)
    a[0:5:2] = af.randu(3, 5)
    display_func(a)
    a[idx, idx] = af.randu(3, 3)
    display_func(a)

    a = af.randu(5, 1)
    b = af.randu(5, 1)
    display_func(a)
    display_func(b)
    for ii in af.ParallelRange(1, 3):
        a[ii] = b[ii]

    display_func(a)

    for ii in af.ParallelRange(2, 5):
        b[ii] = 2
    display_func(b)

    a = af.randu(3, 2)
    rows = af.constant(0, 1, dtype=af.Dtype.s32)
    b = a[:, rows]
    display_func(b)
    for r in range(rows.elements()):
        display_func(r)
        display_func(b[:, r])

    a = af.randu(3)
    c = af.randu(3)
    b = af.constant(1, 3, dtype=af.Dtype.b8)
    display_func(a)
    a[b] = c
    display_func(a)


_util.tests["index"] = simple_index