add HearthstoneTokenBuilder class

1 files changed, 43 insertions, 0 deletions

diff --git a/battleNetApi/include/hearthstoneTokenBuilder.hpp b/battleNetApi/include/hearthstoneTokenBuilder.hpp
new file mode 100644
index 0000000..488aff4
--- /dev/null
+++ b/battleNetApi/include/hearthstoneTokenBuilder.hpp
@@ -0,0 +1,43 @@
+#include <chrono>
+#include <cstdint>
+#include <nlohmann/json.hpp>
+#include <string>
+#include <token.hpp>
+#include <tokenBuilder.hpp>
+#include <vector>
+
+using nlohmann::json;
+
+static constexpr std::uint64_t kTOKEN_CONTENT_MIN_LENGTH{10};
+
+class HearthstoneTokenBuilder : TokenBuilder {
+  private:
+    std::shared_ptr<Token> mCurrentToken;
+    bool mUpdateSourceFile{false};
+    std::vector<std::string> mJsonPaths;
+    bool isUpdateSourceFileAllowed() const;
+    const bool hasExpired(json iToken) const;
+    static size_t curlCallbackStringOutput(void *iPtr, size_t iSize,
+                                           size_t iNmemb,
+                                           std::string *iUserData);
+    std::chrono::seconds getCurrentTime() const;
+    std::pair<std::string, std::uint64_t> getTokenWithApi() const;
+    std::string getTokenFromLocalFile() const;
+    void writeTokenToLocalFile(
+        const std::pair<std::string, std::uint64_t> &iToken) const;
+
+  public:
+    HearthstoneTokenBuilder(const std::span<std::string> &iJsonPaths);
+    HearthstoneTokenBuilder(const std::string &iJsonPath);
+    HearthstoneTokenBuilder &addJsonPath(const std::string &iJsonPath);
+    HearthstoneTokenBuilder &addJsonPaths(const std::string &iJsonPath);
+    HearthstoneTokenBuilder &allowUpdateSourceFile();
+    /**
+     * @return Create an access token to perform API requests.
+     * First, the cache files are checked.
+     * A new token is computed if the token lifetimes expired,
+     * or if there is no token at all.
+     */
+    HearthstoneTokenBuilder &buildToken() override;
+    std::shared_ptr<Token> getToken() override;
+};