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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 <args/args.hxx>
#include <cstdlib>
#include <iostream>
#include <csignal>
#include <atomic>
#include <sstream>
using namespace std::literals::chrono_literals;
int main(int argc, char *argv[]) {
args::ArgumentParser argumentParser("Mapbox GL offline tool");
args::HelpFlag helpFlag(argumentParser, "help", "Display this help menu", {'h', "help"});
args::ValueFlag<std::string> tokenValue(argumentParser, "key", "Mapbox access token", {'t', "token"});
args::ValueFlag<std::string> styleValue(argumentParser, "URL", "Map stylesheet", {'s', "style"});
args::ValueFlag<std::string> outputValue(argumentParser, "file", "Output database file name", {'o', "output"});
args::ValueFlag<std::string> apiBaseValue(argumentParser, "URL", "API Base URL", {'a', "apiBaseURL"});
args::ValueFlag<double> northValue(argumentParser, "degrees", "North latitude", {"north"});
args::ValueFlag<double> westValue(argumentParser, "degrees", "West longitude", {"west"});
args::ValueFlag<double> southValue(argumentParser, "degrees", "South latitude", {"south"});
args::ValueFlag<double> eastValue(argumentParser, "degrees", "East longitude", {"east"});
args::ValueFlag<double> minZoomValue(argumentParser, "number", "Min zoom level", {"minZoom"});
args::ValueFlag<double> maxZoomValue(argumentParser, "number", "Max zoom level", {"maxZoom"});
args::ValueFlag<double> pixelRatioValue(argumentParser, "number", "Pixel ratio", {"pixelRatio"});
try {
argumentParser.ParseCLI(argc, argv);
} catch (args::Help) {
std::cout << argumentParser;
exit(0);
} catch (args::ParseError e) {
std::cerr << e.what() << std::endl;
std::cerr << argumentParser;
exit(1);
} catch (args::ValidationError e) {
std::cerr << e.what() << std::endl;
std::cerr << argumentParser;
exit(2);
}
std::string style = styleValue ? args::get(styleValue) : mbgl::util::default_styles::streets.url;
// Bay area
const double north = northValue ? args::get(northValue) : 37.2;
const double west = westValue ? args::get(westValue) : -122.8;
const double south = southValue ? args::get(southValue) : 38.1;
const double east = eastValue ? args::get(eastValue) : -121.7;
const double minZoom = minZoomValue ? args::get(minZoomValue) : 0.0;
const double maxZoom = maxZoomValue ? args::get(maxZoomValue) : 15.0;
const double pixelRatio = pixelRatioValue ? args::get(pixelRatioValue) : 1.0;
const std::string output = outputValue ? args::get(outputValue) : "offline.db";
const char* tokenEnv = getenv("MAPBOX_ACCESS_TOKEN");
const std::string token = tokenValue ? args::get(tokenValue) : (tokenEnv ? tokenEnv : std::string());
const std::string apiBaseURL = apiBaseValue ? args::get(apiBaseValue) : mbgl::util::API_BASE_URL;
using namespace mbgl;
util::RunLoop loop;
DefaultFileSource fileSource(output, ".");
std::unique_ptr<OfflineRegion> region;
fileSource.setAccessToken(token);
fileSource.setAPIBaseURL(apiBaseURL);
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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