1 files changed, 76 insertions, 0 deletions
diff --git a/bin/offline.cpp b/bin/offline.cpp
new file mode 100644
index 0000000000..a0adb6c2aa
--- /dev/null
+++ b/bin/offline.cpp
@@ -0,0 +1,76 @@
+#include <mbgl/util/run_loop.hpp>
+#include <mbgl/util/string.hpp>
+#include <mbgl/util/io.hpp>
+
+#include <mbgl/storage/default_file_source.hpp>
+
+#include <cstdlib>
+#include <iostream>
+
+using namespace std::literals::chrono_literals;
+
+int main(int, char * []) {
+    using namespace mbgl;
+
+    unlink("offline.db");
+
+    util::RunLoop loop;
+    DefaultFileSource fileSource("offline.db", ".");
+
+    fileSource.setAccessToken(getenv("MAPBOX_ACCESS_TOKEN"));
+
+    LatLngBounds bayArea = LatLngBounds::hull(LatLng(37.2, -122.8), LatLng(38.1, -121.7));
+    OfflineTilePyramidRegionDefinition definition("mapbox://styles/mapbox/streets-v8", bayArea, 0, 15, 1.0);
+    OfflineRegionMetadata metadata;
+
+    class Observer : public OfflineRegionObserver {
+    public:
+        Observer(util::RunLoop& loop_)
+            : loop(loop_),
+              start(SystemClock::now()) {
+        }
+
+        void statusChanged(OfflineRegionStatus status) override {
+            std::string bytesPerSecond = "-";
+
+            auto elapsedSeconds = (SystemClock::now() - start) / 1s;
+            if (elapsedSeconds != 0) {
+                bytesPerSecond = util::toString(status.completedResourceSize / elapsedSeconds);
+            }
+
+            std::cout << status.completedResourceCount << " / " << status.requiredResourceCount
+                      << " resources"
+                      << (status.requiredResourceCountIsIndeterminate ? " (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;
+        }
+
+        util::RunLoop& loop;
+        SystemTimePoint start;
+    };
+
+    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);
+            fileSource.setOfflineRegionObserver(*region, std::make_unique<Observer>(loop));
+            fileSource.setOfflineRegionDownloadState(*region, OfflineRegionDownloadState::Active);
+        }
+    });
+
+    loop.run();
+    return 0;
+}