fix CMake, add comments

.gitignore

@@ -32,4 +32,5 @@
 *.app
 
 .vscode/
-build/
+build/
+20230927_181109North_Carolina_VIPER_Rutherford_T-Control__TO_41003_FROM_1610051.mp3

CMakeLists.txt

@@ -6,15 +6,14 @@ set(CMAKE_CXX_STANDARD_REQUIRED True)
 
 find_package(CURL REQUIRED)
 
+# For the main executable
 add_executable(sdrTrunkTranscriber main.cpp curlHelper.cpp)
+target_link_libraries(sdrTrunkTranscriber CURL::libcurl)
 
-# Add GoogleTest
+# For tests
 enable_testing()
 find_package(GTest REQUIRED)
 include_directories(${GTEST_INCLUDE_DIRS})
 
-# Create test executable
-add_executable(runTests test.cpp)
-target_link_libraries(runTests ${GTEST_LIBRARIES} pthread)
-
-target_link_libraries(sdrTrunkTranscriber CURL::libcurl)
+add_executable(runTests test.cpp curlHelper.cpp)  # Include curlHelper.cpp here
+target_link_libraries(runTests ${GTEST_LIBRARIES} pthread CURL::libcurl)  # Include CURL::libcurl here

curlHelper.cpp

@@ -2,20 +2,23 @@
 #include <stdexcept>
 
 const std::string API_URL = "https://api.openai.com/v1/audio/transcriptions";
-extern const char* ENV_OPENAI_API_KEY;
+const char* ENV_OPENAI_API_KEY = std::getenv("OPENAI_API_KEY");
 
+// Callback function to write the CURL response to a string
 size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp)
 {
     ((std::string *)userp)->append((char *)contents, size * nmemb);
     return size * nmemb;
 }
 
+// Setup CURL headers
 void setupCurlHeaders(CURL *curl, struct curl_slist *&headers)
 {
     headers = curl_slist_append(headers, ("Authorization: Bearer " + std::string(ENV_OPENAI_API_KEY)).c_str());
     curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
 }
 
+// Setup CURL post fields
 void setupCurlPostFields(CURL *curl, curl_mime *&mime, const std::string &file_path)
 {
     curl_mimepart *part;
@@ -48,6 +51,7 @@ void setupCurlPostFields(CURL *curl, curl_mime *&mime, const std::string &file_p
     curl_mime_data(part, "en", CURL_ZERO_TERMINATED);
 }
 
+// Make a CURL request and return the response
 std::string makeCurlRequest(CURL *curl, curl_mime *mime)
 {
     std::string response;
@@ -62,6 +66,7 @@ std::string makeCurlRequest(CURL *curl, curl_mime *mime)
     return response;
 }
 
+// Transcribe audio using CURL
 std::string curl_transcribe_audio(const std::string &file_path)
 {
     CURL *curl = curl_easy_init();

curlHelper.h

@@ -2,8 +2,17 @@
 #include <string>
 #include <curl/curl.h>
 
+// Callback function to write the CURL response to a string
 size_t WriteCallback(void* contents, size_t size, size_t nmemb, void* userp);
+
+// Setup CURL headers
 void setupCurlHeaders(CURL* curl, struct curl_slist*& headers);
+
+// Setup CURL post fields
 void setupCurlPostFields(CURL* curl, curl_mime*& mime, const std::string& file_path);
+
+// Make a CURL request and return the response
 std::string makeCurlRequest(CURL* curl, curl_mime* mime);
+
+// Transcribe audio using CURL
 std::string curl_transcribe_audio(const std::string& file_path);

main.cpp

@@ -3,26 +3,31 @@
 #include <stdexcept>
 #include "curlHelper.h"
 
-int main(int argc, char *argv[])
-{
+int main(int argc, char *argv[]) {
     const char* ENV_OPENAI_API_KEY = std::getenv("OPENAI_API_KEY");
 
+    if (argc == 2 && std::string(argv[1]) == "--help") {
+        std::cout << "Usage: ./sdrTrunkTranscriber <file_path>" << std::endl;
+        return 0;
+    }
+
     if (ENV_OPENAI_API_KEY == nullptr) {
-        throw std::runtime_error("OPENAI_API_KEY environment variable not set");
+        std::cerr << "OPENAI_API_KEY environment variable not set" << std::endl;
+        return 1;
     }
-    if (argc < 2)
-    {
-        std::cout << "Usage: ./program <file_path>" << std::endl;
+
+    if (argc < 2) {
+        std::cout << "Usage: ./sdrTrunkTranscriber <file_path>" << std::endl;
         return 1;
     }
+
     std::string file_path = argv[1];
-    try
-    {
+    try {
         std::cout << curl_transcribe_audio(file_path) << std::endl;
-    }
-    catch (const std::exception &e)
-    {
+    } catch (const std::runtime_error &e) {
+        std::cerr << "Runtime Error: " << e.what() << std::endl;
+    } catch (const std::exception &e) {
         std::cerr << "Error: " << e.what() << std::endl;
     }
     return 0;
-}
+}