# Tests for src/gdalraster.cpp
test_that("info() prints output to the console", {
	evt_file <- system.file("extdata/storml_evt.tif", package="gdalraster")
	ds <- new(GDALRaster, evt_file, TRUE)
	expect_output(ds$info())
	ds$close()
})

test_that("infoAsJSON() returns string output", {
	evt_file <- system.file("extdata/storml_evt.tif", package="gdalraster")
	tmp_file <- paste0(tempdir(), "/", "storml_evt_tmp.tif")
	file.copy(evt_file,  tmp_file)
	ds <- new(GDALRaster, tmp_file, TRUE)
	expect_type(ds$infoAsJSON(), "character")
	files <- ds$getFileList()
	on.exit(unlink(files))
	ds$close()
})

test_that("dataset parameters are correct", {
	lcp_file <- system.file("extdata/storm_lake.lcp", package="gdalraster")
	ds <- new(GDALRaster, lcp_file, TRUE)
	expect_length(ds$getFileList(), 2)
	ds$close()
	evt_file <- system.file("extdata/storml_evt.tif", package="gdalraster")
	ds <- new(GDALRaster, evt_file, TRUE)
	expect_equal(ds$getDriverShortName(), "GTiff")
	expect_equal(ds$getDriverLongName(), "GeoTIFF")
	expect_equal(ds$getRasterXSize(), 143)
	expect_equal(ds$getRasterYSize(), 107)
	expect_equal(ds$getGeoTransform(),
					c(323476.1,30.0,0.0,5105082.0,0.0,-30.0))
	expect_equal(ds$bbox(), c(323476.1,5101872.0,327766.1,5105082.0))
	expect_equal(ds$res(), c(30,30))
	expect_equal(ds$dim(), c(143,107,1))
	ds$close()
})

test_that("band-level parameters are correct", {
	evt_file <- system.file("extdata/storml_evt.tif", package="gdalraster")
	ds <- new(GDALRaster, evt_file, TRUE)
	expect_equal(ds$getBlockSize(1), c(143,28))
	expect_equal(ds$getOverviewCount(1), 0)
	expect_equal(ds$getDataTypeName(1), "Int16")
	expect_equal(ds$getNoDataValue(1), 32767)
	expect_equal(ds$getUnitType(1), "")
	expect_true(is.na(ds$getScale(1)))
	expect_true(is.na(ds$getOffset(1)))
	expect_equal(ds$getDescription(1), "")
	ds$close()
})

test_that("metadata are correct", {
	evt_file <- system.file("extdata/storml_evt.tif", package="gdalraster")
	ds <- new(GDALRaster, evt_file, TRUE)
	expect_equal(ds$getMetadata(band=0, domain=""), "AREA_OR_POINT=Area")
	expect_equal(ds$getMetadata(band=1, domain=""), 
				"RepresentationType=ATHEMATIC")
	expect_equal(ds$getMetadata(band=0, domain="IMAGE_STRUCTURE"),
				"INTERLEAVE=BAND")
	expect_equal(ds$getMetadata(band=1, domain="IMAGE_STRUCTURE"), "")
	expect_equal(ds$getMetadataItem(band=0, mdi_name="AREA_OR_POINT",
				domain=""), "Area")
	expect_equal(ds$getMetadataItem(band=0, "INTERLEAVE",
				domain="IMAGE_STRUCTURE"), "BAND")
	expect_equal(ds$getMetadataItem(band=1, mdi_name="COMPRESSION",
				domain="IMAGE_STRUCTURE"), "")
	expect_equal(length(ds$getMetadataDomainList(band=0)), 3)
	expect_equal(length(ds$getMetadataDomainList(band=1)), 1)
	ds$close()
})

test_that("open/close/re-open works", {
	elev_file <- system.file("extdata/storml_elev.tif", package="gdalraster")
	ds <- new(GDALRaster, elev_file, read_only=TRUE)
	dm <- ds$dim()
	r <- read_ds(ds)
	ds$close()
	mod_file <- paste0(tempdir(), "/", "storml_elev_mod.tif")
	rasterFromRaster(srcfile = elev_file,
					dstfile = mod_file,
					nbands = 1,
					dtName = "UInt32",
					init = DEFAULT_NODATA[["UInt32"]])
	ds <- new(GDALRaster, mod_file, read_only=TRUE)
	expect_true(ds$isOpen())
	expect_true(all(is.na(read_ds(ds))))
	ds$close()
	expect_false(ds$isOpen())
	expect_equal(ds$getFilename(), mod_file)
	ds$open(read_only=FALSE)
	expect_true(ds$isOpen())
	ds$setDescription(band=1, "test")
	expect_equal(ds$getDescription(band=1), "test")
	r[is.na(r)] <- DEFAULT_NODATA[["UInt32"]]
	ds$write(band=1, 0, 0, dm[1], dm[2], r)
	expect_silent(ds$flushCache())
	expect_false(all(is.na(read_ds(ds))))
	expect_true(any(is.na(read_ds(ds))))
	files <- ds$getFileList()
	on.exit(unlink(files))
	ds$close()
})

test_that("statistics are correct", {
	elev_file <- system.file("extdata/storml_elev.tif", package="gdalraster")
	mod_file <- paste0(tempdir(), "/", "storml_elev_mod.tif")
	file.copy(elev_file,  mod_file)
	ds <- new(GDALRaster, mod_file, read_only=FALSE)
	expect_equal(ds$getMinMax(band=1, approx_ok=FALSE), c(2438, 3046))
	stats <- round(ds$getStatistics(band=1, approx_ok=FALSE, force=TRUE))
	expect_equal(stats, c(2438, 3046, 2676, 133))
	if (as.integer(gdal_version()[2]) >= 3020000) {
		ds$flushCache()
		ds$clearStatistics()
		ds$flushCache()
		stats <- round(ds$getStatistics(band=1, approx_ok=TRUE, force=FALSE))
		expect_true(all(is.na(stats)))
	}
	files <- ds$getFileList()
	on.exit(unlink(files))
	ds$close()
})

test_that("get histogram works", {
	tcc_file <- system.file("extdata/storml_tcc.tif", package="gdalraster")
	f <- paste0(tempdir(), "/", "storml_tcc_test.tif")
	file.copy(tcc_file,  f)
	ds <- new(GDALRaster, f, read_only=TRUE)
	num_bins <- length(ds$getHistogram(1, -0.5, 100.5, 101, FALSE, FALSE))
	expect_equal(num_bins, 101)
	num_pixels <- sum(ds$getHistogram(1, -0.5, 100.5, 101, FALSE, FALSE))
	expect_equal(num_pixels, 15301)
	ds$close()
	deleteDataset(f)
	
	# default histogram
	f2 <- paste0(tempdir(), "/", "storml_tcc_test2.tif")
	file.copy(tcc_file,  f2)
	ds <- new(GDALRaster, f2, read_only=TRUE)
	expect_warning(ds$getDefaultHistogram(1, FALSE))
	expect_length(ds$getDefaultHistogram(1, TRUE), 4)
	ds$close()
	deleteDataset(f2)
})

test_that("floating point I/O works", {
	f <- paste0(tempdir(), "/", "testfloat.tif")
	create(format="GTiff", dst_filename=f, xsize=10, ysize=10,
			nbands=1, dataType="Float32")
	ds <- new(GDALRaster, f, read_only=FALSE)
	set.seed(42)
	z <- runif(10*10)
	ds$write(band=1, xoff=0, yoff=0, xsize=10, ysize=10, z)
	ds$open(read_only=TRUE)
	expect_equal(round(read_ds(ds),5), round(z,5))
	ds$open(read_only=FALSE)
	ds$setNoDataValue(band=1, -99999)
	ds$write(band=1, xoff=0, yoff=0, xsize=10, ysize=10, rep(-99999, 100))
	ds$open(read_only=TRUE)
	expect_true(all(is.na(read_ds(ds))))
	ds$open(read_only=FALSE)
	ds$deleteNoDataValue(band=1)
	ds$open(read_only=TRUE)
	expect_equal(read_ds(ds), rep(-99999, 100))
	files <- ds$getFileList()
	on.exit(unlink(files))
	ds$close()
})

test_that("complex I/O works", {
	f <- paste0(tempdir(), "/", "testcomplex.tif")
	create(format="GTiff", dst_filename=f, xsize=10, ysize=10,
			nbands=1, dataType="CFloat32")
	ds <- new(GDALRaster, f, read_only=FALSE)
	set.seed(42)
	z <- complex(real = stats::rnorm(100), imaginary = stats::rnorm(100))
	ds$write(band=1, xoff=0, yoff=0, xsize=10, ysize=10, z)
	ds$open(read_only=TRUE)
	expect_vector(read_ds(ds), ptype=complex(0), size=100)
	files <- ds$getFileList()
	on.exit(unlink(files))
	ds$close()
})

test_that("set unit type, scale and offset works", {
	elev_file <- system.file("extdata/storml_elev.tif", package="gdalraster")
	mod_file <- paste0(tempdir(), "/", "storml_elev_mod.tif")
	file.copy(elev_file,  mod_file)
	ds <- new(GDALRaster, mod_file, read_only=FALSE)
	ds$setUnitType(1, "m")
	ds$setScale(1, 1)
	ds$setOffset(1, 0)
	expect_equal(ds$getUnitType(1), "m")
	expect_equal(ds$getScale(1), 1)
	expect_equal(ds$getOffset(1), 0)
	files <- ds$getFileList()
	on.exit(unlink(files))
	ds$close()
})

test_that("build overviews runs without error", {
	elev_file <- system.file("extdata/storml_elev.tif", package="gdalraster")
	mod_file <- paste0(tempdir(), "/", "storml_elev.tif")
	file.copy(elev_file,  mod_file)
	ds <- new(GDALRaster, mod_file, read_only=FALSE)
	expect_no_error(ds$buildOverviews("BILINEAR", c(2,4,8), 0))
	expect_no_error(ds$buildOverviews("NONE", 0, 0))
	files <- ds$getFileList()
	on.exit(unlink(files))
	ds$close()
})

test_that("get/set color table works", {
	f <- system.file("extdata/storml_evc.tif", package="gdalraster")
	f2 <- paste0(tempdir(), "/", "storml_evc_ct.tif")
	calc("A", f, dstfile=f2, dtName="UInt16", nodata_value=32767,
			setRasterNodataValue=TRUE)
	ds <- new(GDALRaster, f2, read_only=FALSE)
	evc_csv <- system.file("extdata/LF20_EVC_220.csv", package="gdalraster")
	vat <- read.csv(evc_csv)
	ct <- vat[,c(1,3:5)]
	expect_warning(ds$setColorTable(1, ct, "RGB"))
	evc_ct <- ds$getColorTable(1)
	expect_equal(nrow(evc_ct), 400)
	expect_equal(ds$getPaletteInterp(1), "RGB")
	files <- ds$getFileList()
	on.exit(unlink(files))
	ds$close()
})

test_that("get/set band color interpretation works", {
	f <- paste0(tempdir(), "/", "test_col_interp.tif")
	create(format="GTiff", dst_filename=f, xsize=10, ysize=10,
			nbands=1, dataType="Byte")
	ds <- new(GDALRaster, f, read_only=FALSE)
	expect_equal(ds$getRasterColorInterp(1), "Gray")
	ds$setRasterColorInterp(1, "Palette")
	expect_equal(ds$getRasterColorInterp(1), "Palette")
	ds$setRasterColorInterp(1, "Red")
	expect_equal(ds$getRasterColorInterp(1), "Red")
	ds$setRasterColorInterp(1, "Green")
	expect_equal(ds$getRasterColorInterp(1), "Green")
	ds$setRasterColorInterp(1, "Blue")
	expect_equal(ds$getRasterColorInterp(1), "Blue")
	ds$setRasterColorInterp(1, "Alpha")
	expect_equal(ds$getRasterColorInterp(1), "Alpha")
	ds$setRasterColorInterp(1, "Hue")
	expect_equal(ds$getRasterColorInterp(1), "Hue")
	ds$setRasterColorInterp(1, "Saturation")
	expect_equal(ds$getRasterColorInterp(1), "Saturation")
	ds$setRasterColorInterp(1, "Lightness")
	expect_equal(ds$getRasterColorInterp(1), "Lightness")
	ds$setRasterColorInterp(1, "Cyan")
	expect_equal(ds$getRasterColorInterp(1), "Cyan")
	ds$setRasterColorInterp(1, "Magenta")
	expect_equal(ds$getRasterColorInterp(1), "Magenta")
	ds$setRasterColorInterp(1, "Yellow")
	expect_equal(ds$getRasterColorInterp(1), "Yellow")
	ds$setRasterColorInterp(1, "Black")
	expect_equal(ds$getRasterColorInterp(1), "Black")
	ds$setRasterColorInterp(1, "YCbCr_Y")
	expect_equal(ds$getRasterColorInterp(1), "YCbCr_Y")
	ds$setRasterColorInterp(1, "YCbCr_Cb")
	expect_equal(ds$getRasterColorInterp(1), "YCbCr_Cb")
	ds$setRasterColorInterp(1, "YCbCr_Cr")
	expect_equal(ds$getRasterColorInterp(1), "YCbCr_Cr")
	ds$setRasterColorInterp(1, "Gray")
	expect_equal(ds$getRasterColorInterp(1), "Gray")
	files <- ds$getFileList()
	on.exit(unlink(files))
	ds$close()
})

test_that("Int64 data type is detected", {
	skip_if(as.integer(gdal_version()[2]) < 3050000)
	
	f <- system.file("extdata/int64.tif", package="gdalraster")
	expect_warning(ds <- new(GDALRaster, f, TRUE))
	expect_equal(ds$getDataTypeName(1), "Int64")
	ds$close()
})

test_that("get/set default RAT works", {
	evt_file <- system.file("extdata/storml_evt.tif", package="gdalraster")
	f <- tempfile(fileext=".tif")
	file.copy(evt_file,  f)
	ds <- new(GDALRaster, f, read_only=FALSE)
	expect_true(is.null(ds$getDefaultRAT(band=1)))
	evt_csv <- system.file("extdata/LF20_EVT_220.csv", package="gdalraster")
	evt_tbl <- read.csv(evt_csv)
	evt_tbl <- evt_tbl[,1:7]
	rat <- buildRAT(ds, table_type="thematic", na_value=-9999, join_df=evt_tbl)
	ds$setDefaultRAT(band=1, rat)
	ds$flushCache()
	rat2 <- ds$getDefaultRAT(band=1)
	expect_equal(nrow(rat2), 24)
	expect_equal(ncol(rat2), 8)
	expect_equal(attr(rat2, "GDALRATTableType"), "thematic")
	expect_equal(attr(rat2$VALUE, "GFU"), "MinMax")
	expect_equal(attr(rat2$COUNT, "GFU"), "PixelCount")
	expect_equal(attr(rat2$EVT_NAME, "GFU"), "Name")
	expect_equal(attr(rat2$EVT_LF, "GFU"), "Generic")
	expect_equal(attr(rat2$B, "GFU"), "Blue")
	ds$close()
	deleteDataset(f)
})