Added verbose flag (-v) with detailed thread progress reporting showing nonce, best difficulty achieved, mining rate, and target

VERSION

@@ -1 +1 @@
-0.1.22
+0.1.23

event_miner.c

@@ -56,6 +56,11 @@ struct mining_context {
     // Control flag (only main thread modifies)
     volatile int should_stop;
     
+    // Verbose mode and progress tracking
+    int verbose_enabled;
+    int best_leading_zeros;
+    time_t thread_start_time;
+    
     // Legacy fields for compatibility during transition
     volatile int found;
     cJSON* result_event;
@@ -72,6 +77,7 @@ typedef struct {
     int threads;
     char* event_file;
     int timeout_sec;
+    int verbose;
     int help;
 } args_t;
 
@@ -88,6 +94,7 @@ static void cleanup_context(mining_context_t* ctx);
 static void solution_found_callback(cJSON* solution, void* user_data);
 static void progress_report_callback(int thread_id, uint64_t attempts, void* user_data);
 static void error_report_callback(int thread_id, int error_code, void* user_data);
+static void verbose_pow_callback(int current_difficulty, uint64_t nonce, void* user_data);
 
 // Usage information
 static void usage(const char* prog_name) {
@@ -99,6 +106,7 @@ static void usage(const char* prog_name) {
     fprintf(stderr, "Optional arguments:\n");
     fprintf(stderr, "  -e <filename>         Read event from file (default: stdin)\n");
     fprintf(stderr, "  --timeout_sec <sec>   Timeout in seconds (default: no timeout)\n");
+    fprintf(stderr, "  -v                    Verbose mode - show mining progress\n");
     fprintf(stderr, "  -h, --help           Show this help message\n\n");
     fprintf(stderr, "Examples:\n");
     fprintf(stderr, "  echo '{\"kind\":1,...}' | %s -pow 4 -nsec nsec1... -threads 8\n", prog_name);
@@ -150,6 +158,8 @@ static int parse_arguments(int argc, char* argv[], args_t* args) {
                 return -1;
             }
             i++; // Skip the next argument
+        } else if (strcmp(argv[i], "-v") == 0) {
+            args->verbose = 1;
         } else if (strcmp(argv[i], "-h") == 0 || strcmp(argv[i], "--help") == 0) {
             args->help = 1;
             return 0;
@@ -265,10 +275,50 @@ static void error_report_callback(int thread_id, int error_code, void* user_data
     (void)user_data;    // Suppress unused parameter warning
 }
 
+// Verbose PoW callback - receives progress from nostr_add_proof_of_work
+static void verbose_pow_callback(int current_difficulty, uint64_t nonce, void* user_data) {
+    mining_context_t* ctx = (mining_context_t*)user_data;
+    
+    // Only report if verbose mode is enabled
+    if (!ctx->verbose_enabled) {
+        return;
+    }
+    
+    // Update best difficulty achieved by this thread
+    if (current_difficulty > ctx->best_leading_zeros) {
+        ctx->best_leading_zeros = current_difficulty;
+    }
+    
+    // Calculate mining rate (attempts per second)
+    time_t current_time = time(NULL);
+    time_t elapsed = current_time - ctx->thread_start_time;
+    double rate = elapsed > 0 ? (double)nonce / elapsed : 0.0;
+    
+    // Format rate for display
+    char rate_str[32];
+    if (rate > 1000000) {
+        snprintf(rate_str, sizeof(rate_str), "%.1fM/sec", rate / 1000000.0);
+    } else if (rate > 1000) {
+        snprintf(rate_str, sizeof(rate_str), "%.1fk/sec", rate / 1000.0);
+    } else {
+        snprintf(rate_str, sizeof(rate_str), "%.0f/sec", rate);
+    }
+    
+    // Print progress report
+    printf("[Thread %d] nonce: %llu, best: %d zeros, rate: %s, target: %d\n", 
+           ctx->thread_id, (unsigned long long)nonce, ctx->best_leading_zeros, 
+           rate_str, ctx->target_difficulty);
+    fflush(stdout);
+}
+
 // Mining thread function - New callback-based approach
 static void* miner_thread(void* arg) {
     mining_context_t* ctx = (mining_context_t*)arg;
     
+    // Initialize thread-specific timing for verbose mode
+    ctx->thread_start_time = time(NULL);
+    ctx->best_leading_zeros = 0;
+    
     // Create a copy of the event for this thread
     char* event_str = cJSON_Print(ctx->event);
     if (!event_str) {
@@ -292,9 +342,11 @@ static void* miner_thread(void* arg) {
     
     // Mine until solution found or signaled to stop by main thread
     while (!ctx->should_stop) {
-        // Attempt mining
+        // Attempt mining with verbose callback if enabled
+        void (*progress_cb)(int, uint64_t, void*) = ctx->verbose_enabled ? verbose_pow_callback : NULL;
+        
         int result = nostr_add_proof_of_work(local_event, ctx->private_key, 
-                                           ctx->target_difficulty, NULL, NULL);
+                                           ctx->target_difficulty, progress_cb, ctx);
         
         attempts++;
         
@@ -501,6 +553,7 @@ int main(int argc, char* argv[]) {
     ctx.target_difficulty = args.pow;
     ctx.thread_count = args.threads;
     ctx.timeout_seconds = args.timeout_sec > 0 ? args.timeout_sec : 0;
+    ctx.verbose_enabled = args.verbose;
     
     // Start mining
     int mining_result = mine_event(&ctx);