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#include <curl/curl.h>
#include <hearthstoneTokenBuilder.hpp>
#include <iostream>
#include <memory>
HearthstoneTokenBuilder::HearthstoneTokenBuilder(const std::string &iJsonPath) {
mJsonPaths.push_back(iJsonPath);
}
HearthstoneTokenBuilder::HearthstoneTokenBuilder(
const std::span<std::string> &iJsonPaths) {
mJsonPaths.append_range(iJsonPaths);
}
HearthstoneTokenBuilder &
HearthstoneTokenBuilder::addJsonPath(const std::string &iJsonPath) {
mJsonPaths.push_back(iJsonPath);
return *this;
}
HearthstoneTokenBuilder &
HearthstoneTokenBuilder::addJsonPaths(const std::string &iJsonPath) {
mJsonPaths.push_back(iJsonPath);
return *this;
}
HearthstoneTokenBuilder &HearthstoneTokenBuilder::buildToken() {
if (hasExpired()) {
const std::pair<std::string, std::uint64_t> kTokenContent{
getTokenWithApi()};
writeTokenToLocalFile(kTokenContent);
}
// return getTokenFromLocalFile();
if (aTokenContainer.empty()) {
return std::nullopt;
}
Token aOutputToken{aTokenContainer.front()};
aTokenContainer.pop();
// mCurrentToken = std::make_unique<Token>(...);
return *this;
}
std::shared_ptr<Token> HearthstoneTokenBuilder::getToken() {
return mCurrentToken;
}
HearthstoneTokenBuilder &HearthstoneTokenBuilder::allowUpdateSourceFile() {
mUpdateSourceFile = true;
return *this;
}
bool HearthstoneTokenBuilder::isUpdateSourceFileAllowed() const {
return mUpdateSourceFile;
}
const bool HearthstoneTokenBuilder::hasExpired(json iCredentials) const {
if (not iCredentials.contains("Token") or
not iCredentials["Token"].contains("ExpirationTime") or
not iCredentials["Token"].contains("Content")) {
return true;
}
if (iCredentials["Token"]["Content"].dump().length() <
kTOKEN_CONTENT_MIN_LENGTH) {
return true;
}
const std::uint64_t kExpirationTime{
iCredentials["Token"]["ExpirationTime"]};
const std::uint64_t kCurrentTime{static_cast<std::uint64_t>(
std::chrono::duration_cast<std::chrono::seconds>(
std::chrono::high_resolution_clock::now().time_since_epoch())
.count())};
return kCurrentTime >= kExpirationTime;
}
size_t HearthstoneTokenBuilder::curlCallbackStringOutput(
void *iPtr, size_t iSize, size_t iNmemb, std::string *iUserData) {
size_t newLength{iSize * iNmemb};
try {
iUserData->append(static_cast<char *>(iPtr), newLength);
} catch (std::bad_alloc &e) {
// handle memory problem
return 0;
}
return newLength;
}
std::chrono::seconds HearthstoneTokenBuilder::getCurrentTime() const {
return std::chrono::duration_cast<std::chrono::seconds>(
std::chrono::utc_clock::now().time_since_epoch());
}
std::pair<std::string, std::uint64_t>
HearthstoneTokenBuilder::getTokenWithApi() const {
std::ifstream aCredentialsFile{mFilePath};
json aCredentials = json::parse(aCredentialsFile);
if (not aCredentials.contains("Agent") or
not aCredentials["Agent"].contains("Username") or
not aCredentials["Agent"].contains("Password")) {
std::cerr << "Please define Agent/Username and Agent/Password in the "
"JSON credentials file\n";
std::exit(EXIT_FAILURE);
}
const std::string kAgentUsername{aCredentials["Agent"]["Username"]};
const std::string kAgentPassword{aCredentials["Agent"]["Password"]};
CURL *aCurl{curl_easy_init()};
std::string aTokenInfo;
if (aCurl and not kAgentUsername.empty() and not kAgentPassword.empty()) {
curl_easy_setopt(aCurl, CURLOPT_URL, "https://oauth.battle.net/token");
curl_easy_setopt(aCurl, CURLOPT_SSL_VERIFYPEER, 0L);
curl_easy_setopt(aCurl, CURLOPT_SSL_VERIFYHOST, 0L);
curl_easy_setopt(aCurl, CURLOPT_WRITEFUNCTION,
curlCallbackStringOutput);
curl_easy_setopt(aCurl, CURLOPT_WRITEDATA, &aTokenInfo);
curl_easy_setopt(
aCurl, CURLOPT_USERPWD,
std::format("{}:{}", kAgentUsername, kAgentPassword).data());
curl_easy_setopt(aCurl, CURLOPT_POSTFIELDS,
"grant_type=client_credentials");
CURLcode result_code{curl_easy_perform(aCurl)};
curl_easy_cleanup(aCurl);
if (result_code != CURLE_OK) {
std::cerr << "ERROR: token request failed" << std::endl;
std::exit(EXIT_FAILURE);
}
}
json aTokenJson = json::parse(aTokenInfo);
return std::make_pair(aTokenJson["access_token"], aTokenJson["expires_in"]);
}
std::string HearthstoneTokenBuilder::getTokenFromLocalFile() const {
std::ifstream aTokenFile{mFilePath};
return json::parse(aTokenFile)["Token"]["Content"];
}
void HearthstoneTokenBuilder::writeTokenToLocalFile(
const std::pair<std::string, std::uint64_t> &iToken) const {
std::ifstream aTokenFileInput{mFilePath};
json aCredentialsFile = json::parse(aTokenFileInput);
aCredentialsFile["Token"]["Content"] = iToken.first;
aCredentialsFile["Token"]["ExpirationTime"] =
std::chrono::duration_cast<std::chrono::seconds>(
getCurrentTime() + std::chrono::seconds(iToken.second))
.count();
std::ofstream aTokenFileOutput{mFilePath};
aTokenFileOutput << std::setw(4) << aCredentialsFile;
}
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