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import { GDALFunctions } from '../../allCFunctions';
import { getGdalError } from '../helper/error';
import { drivers } from '../helper/drivers';
import { getOptions, clearOptions } from '../helper/options';
import { OUTPUTPATH, getRealOutputPath } from '../helper/const';
import { getFileListFromDataset } from '../helper/getFileList';
/**
* gdal_translate function can be used to convert raster data between different formats,
* potentially performing some operations like subsettings, resampling,
* and rescaling pixels in the process.
*
* {@link https://gdal.org/programs/gdal_translate.html}
*
* @module a/gdal_translate
* @async
* @param {TypeDefs.Dataset} dataset Dataset to be converted.
* @param {Array} [options] Options ({@link https://gdal.org/programs/gdal_translate.html#description})
* @param {string} [outputName] Destination file name without extension.
* @return {Promise<TypeDefs.FilePath>} "Promise" returns paths of created files.
* @example
* const Gdal = await initGdalJs();
* const dataset = (await Gdal.open('data.tif')).datasets[0];
* const options = [
* '-of', 'PNG'
* ];
* const filePath = await Gdal.gdal_translate(dataset, options);
*
*/
export default function gdal_translate(dataset, options = [], outputName = null) {
return new Promise((resolve, reject) => {
const optStr = getOptions(options);
const config = optStr.config;
Object.entries(config).forEach(([key, value]) => {
GDALFunctions.CPLSetConfigOption(key, value);
});
const translateOptionsPtr = GDALFunctions.GDALTranslateOptionsNew(optStr.ptr, null);
const driverIndex = options.indexOf('-of') + 1;
let ext = 'unknown';
if (driverIndex !== 0) {
const driverName = options[driverIndex];
const driver = drivers.raster[driverName];
if (driver) ext = driver.extension;
}
const finalOutputName = outputName || dataset.path.split('.', 1)[0];
const filePath = `${OUTPUTPATH}/${finalOutputName}.${ext}`;
const datasetPtr = GDALFunctions.GDALTranslate(filePath, dataset.pointer, translateOptionsPtr, null);
const outputFiles = getFileListFromDataset(datasetPtr);
GDALFunctions.GDALTranslateOptionsFree(translateOptionsPtr);
clearOptions(optStr);
GDALFunctions.GDALClose(datasetPtr);
if (GDALFunctions.CPLGetLastErrorNo() >= 3) {
const error = getGdalError();
reject(error);
} else {
resolve({
local: filePath,
real: `${getRealOutputPath()}/${finalOutputName}.${ext}`,
all: outputFiles.map((file) => ({
local: file,
real: file.replace(`${OUTPUTPATH}/`, `${getRealOutputPath()}/`),
})),
});
}
});
}
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