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#include <mbgl/util/default_styles.hpp>
#include <mbgl/util/run_loop.hpp>
#include <mbgl/util/string.hpp>
#include <mbgl/storage/default_file_source.hpp>
#include <cstdlib>
#include <iostream>
#include <csignal>
#include <atomic>
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunknown-pragmas"
#pragma GCC diagnostic ignored "-Wunused-local-typedefs"
#pragma GCC diagnostic ignored "-Wshadow"
#include <boost/program_options.hpp>
#pragma GCC diagnostic pop
namespace po = boost::program_options;
using namespace std::literals::chrono_literals;
int main(int argc, char *argv[]) {
std::string style = mbgl::util::default_styles::streets.url;
double north = 37.2, west = -122.8, south = 38.1, east = -121.7; // Bay area
double minZoom = 0.0, maxZoom = 15.0, pixelRatio = 1.0;
std::string output = "offline.db";
const char* tokenEnv = getenv("MAPBOX_ACCESS_TOKEN");
std::string token = tokenEnv ? tokenEnv : std::string();
po::options_description desc("Allowed options");
desc.add_options()
("style,s", po::value(&style)->value_name("URL"), "Map stylesheet")
("north", po::value(&north)->value_name("degrees")->default_value(north), "North latitude")
("west", po::value(&west)->value_name("degrees")->default_value(west), "West longitude")
("south", po::value(&south)->value_name("degrees")->default_value(south), "South latitude")
("east", po::value(&east)->value_name("degrees")->default_value(east), "East longitude")
("minZoom", po::value(&minZoom)->value_name("number")->default_value(minZoom), "Min zoom level")
("maxZoom", po::value(&maxZoom)->value_name("number")->default_value(maxZoom), "Max zoom level")
("pixelRatio", po::value(&pixelRatio)->value_name("number")->default_value(pixelRatio), "Pixel ratio")
("token,t", po::value(&token)->value_name("key")->default_value(token), "Mapbox access token")
("output,o", po::value(&output)->value_name("file")->default_value(output), "Output database file name")
;
try {
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, desc), vm);
po::notify(vm);
} catch(std::exception& e) {
std::cout << "Error: " << e.what() << std::endl << desc;
exit(1);
}
using namespace mbgl;
util::RunLoop loop;
DefaultFileSource fileSource(output, ".");
std::unique_ptr<OfflineRegion> region;
fileSource.setAccessToken(token);
LatLngBounds boundingBox = LatLngBounds::hull(LatLng(north, west), LatLng(south, east));
OfflineTilePyramidRegionDefinition definition(style, boundingBox, minZoom, maxZoom, pixelRatio);
OfflineRegionMetadata metadata;
class Observer : public OfflineRegionObserver {
public:
Observer(OfflineRegion& region_, DefaultFileSource& fileSource_, util::RunLoop& loop_)
: region(region_),
fileSource(fileSource_),
loop(loop_),
start(util::now()) {
}
void statusChanged(OfflineRegionStatus status) override {
if (status.downloadState == OfflineRegionDownloadState::Inactive) {
std::cout << "stopped" << std::endl;
loop.stop();
return;
}
std::string bytesPerSecond = "-";
auto elapsedSeconds = (util::now() - start) / 1s;
if (elapsedSeconds != 0) {
bytesPerSecond = util::toString(status.completedResourceSize / elapsedSeconds);
}
std::cout << status.completedResourceCount << " / " << status.requiredResourceCount
<< " resources"
<< (status.requiredResourceCountIsPrecise ? "; " : " (indeterminate); ")
<< status.completedResourceSize << " bytes downloaded"
<< " (" << bytesPerSecond << " bytes/sec)"
<< std::endl;
if (status.complete()) {
std::cout << "Finished" << std::endl;
loop.stop();
}
}
void responseError(Response::Error error) override {
std::cerr << error.reason << " downloading resource: " << error.message << std::endl;
}
void mapboxTileCountLimitExceeded(uint64_t limit) override {
std::cerr << "Error: reached limit of " << limit << " offline tiles" << std::endl;
}
OfflineRegion& region;
DefaultFileSource& fileSource;
util::RunLoop& loop;
Timestamp start;
};
static auto stop = [&] {
if (region) {
std::cout << "Stopping download... ";
fileSource.setOfflineRegionDownloadState(*region, OfflineRegionDownloadState::Inactive);
}
};
std::signal(SIGINT, [] (int) { stop(); });
fileSource.createOfflineRegion(definition, metadata, [&] (std::exception_ptr error, optional<OfflineRegion> region_) {
if (error) {
std::cerr << "Error creating region: " << util::toString(error) << std::endl;
loop.stop();
exit(1);
} else {
assert(region_);
region = std::make_unique<OfflineRegion>(std::move(*region_));
fileSource.setOfflineRegionObserver(*region, std::make_unique<Observer>(*region, fileSource, loop));
fileSource.setOfflineRegionDownloadState(*region, OfflineRegionDownloadState::Active);
}
});
loop.run();
return 0;
}
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