odm/include/copcat.h

#pragma once
#include "cache.h"
#include "curlfuncs.h"
#include "merrors.h"
#include <json/json.h>

using michlib::Error;
using michlib::RetVal;

class CopernicusCatalog
{
 static const MString caturl;

 std::unique_ptr<GenericCache> cache;
 CURLRAII                      chandle;
 Json::Value                   catalog;

 // Download catalog
 Error GetCatalog();

 // Asset url from dataset
 RetVal<MString> AssetURL(const MString& prod, const MString& dataset, const MString& asset) const;

 public:
 CopernicusCatalog();

 // Download JSON from url
 RetVal<Json::Value> GetJSON(const MString& url) const;

 // List of products
 RetVal<std::vector<MString>> ProductList() const;

 // List of datasets in product
 RetVal<std::vector<MString>> DatasetList(const MString& prod) const;

 // URL of product
 RetVal<MString> ProductURL(const MString& prod) const;

 // URL of dataset
 RetVal<MString> DatasetURL(const MString& prod, const MString& dataset) const;

 // URL of native data (files) in dataset
 RetVal<MString> DatasetNativeURL(const MString& prod, const MString& dataset) const { return AssetURL(prod, dataset, "native"); }

 // URL of timechuncked data (files) in dataset
 RetVal<MString> DatasetTimeURL(const MString& prod, const MString& dataset) const { return AssetURL(prod, dataset, "timeChunked"); }

 // URL of geochuncked data (files) in dataset
 RetVal<MString> DatasetGeoURL(const MString& prod, const MString& dataset) const { return AssetURL(prod, dataset, "geoChunked"); }

 bool Valid() const { return catalog.isObject(); }

 explicit operator bool() const { return Valid(); }
};