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#ifndef MBGL_STORAGE_DEFAULT_DEFAULT_FILE_SOURCE
#define MBGL_STORAGE_DEFAULT_DEFAULT_FILE_SOURCE
#include <mbgl/storage/file_source.hpp>
#include <mbgl/storage/file_cache.hpp>
#include <set>
#include <unordered_map>
#include <thread>
namespace mapbox { namespace util { template<typename... Types> class variant; } }
namespace mbgl {
namespace util { template <typename T> class AsyncQueue; }
class SharedRequestBase;
class DefaultFileSource : public FileSource {
public:
DefaultFileSource(FileCache *cache, const std::string &root = "");
DefaultFileSource(FileCache *cache, uv_loop_t *loop, const std::string &root = "");
~DefaultFileSource() override;
Request *request(const Resource &resource, uv_loop_t *loop, const Environment &env,
Callback callback) override;
void cancel(Request *request) override;
void request(const Resource &resource, const Environment &env, Callback callback) override;
void abort(const Environment &env) override;
enum class CacheHint : uint8_t { Full, Refresh, No };
void notify(SharedRequestBase *sharedRequest, const std::set<Request *> &observers,
std::shared_ptr<const Response> response, FileCache::Hint hint);
public:
const std::string assetRoot;
private:
struct ActionDispatcher;
struct AddRequestAction;
struct RemoveRequestAction;
struct ResultAction;
struct StopAction;
struct AbortAction;
using Action = mapbox::util::variant<AddRequestAction, RemoveRequestAction, ResultAction,
StopAction, AbortAction>;
using Queue = util::AsyncQueue<Action>;
void process(AddRequestAction &action);
void process(RemoveRequestAction &action);
void process(ResultAction &action);
void process(StopAction &action);
void process(AbortAction &action);
SharedRequestBase *find(const Resource &resource);
std::unordered_map<Resource, SharedRequestBase *, Resource::Hash> pending;
uv_loop_t *loop = nullptr;
FileCache *cache = nullptr;
Queue *queue = nullptr;
std::thread thread;
};
}
#endif
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