#!/usr/bin/env pytest
###############################################################################
#
# Project:  GDAL/OGR Test Suite
# Purpose:  Test read/write functionality for ZMap driver.
# Author:   Even Rouault <even dot rouault at spatialys.com>
#
###############################################################################
# Copyright (c) 2011, Even Rouault <even dot rouault at spatialys.com>
#
# SPDX-License-Identifier: MIT
###############################################################################

import gdaltest
import pytest

from osgeo import gdal

pytestmark = pytest.mark.require_driver("ZMap")

###############################################################################
# Test CreateCopy() of byte.tif


def test_zmap_1():

    tst = gdaltest.GDALTest("ZMap", "byte.tif", 1, 4672)
    tst.testCreateCopy(
        vsimem=1,
        check_gt=(-67.00041667, 0.00083333, 0.0, 50.000416667, 0.0, -0.00083333),
    )


###############################################################################
# Test setting nodata value to -3.402823E+38


def test_zmap_nodata():

    src_ds = gdal.GetDriverByName("MEM").Create("", 2, 2, 1, gdal.GDT_Float32)
    src_ds.GetRasterBand(1).SetNoDataValue(-3.402823e38)
    filename = "/vsimem/out.zmap"
    gdal.GetDriverByName("ZMap").CreateCopy(filename, src_ds)
    ds = gdal.Open(filename)
    assert ds
    assert (
        ds.GetRasterBand(1).GetNoDataValue() == src_ds.GetRasterBand(1).GetNoDataValue()
    )
    ds = None
    gdal.GetDriverByName("ZMap").Delete(filename)


###############################################################################
# Test variant of the format where there is no flush at end of column


def test_zmap_no_flush_end_of_column(tmp_path):

    src_ds = gdal.GetDriverByName("MEM").Create("", 2, 5)
    src_ds.WriteRaster(0, 0, 2, 5, b"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09")
    filename = str(tmp_path / "out.zmap")
    with gdaltest.config_option("ZMAP_EMIT_EOL_AT_END_OF_COLUMN", "NO"):
        gdal.GetDriverByName("ZMap").CreateCopy(filename, src_ds)
    f = gdal.VSIFOpenL(filename, "rb")
    assert f
    data = gdal.VSIFReadL(1, 1000, f)
    gdal.VSIFCloseL(f)
    assert (
        data
        == b"!\n! Created by GDAL.\n!\n@GRID FILE, GRID, 4\n        20,               1E+30,          ,         7,         1\n         5,         2,     0.0000000,     2.0000000,    -5.0000000,     0.0000000\n0.0, 0.0, 0.0\n@\n           0.0000000           2.0000000           4.0000000           6.0000000\n           8.0000000           1.0000000           3.0000000           5.0000000\n           7.0000000           9.0000000\n"
    )
    ds = gdal.Open(filename)
    assert ds.ReadRaster(buf_type=gdal.GDT_Byte) == src_ds.ReadRaster()
