/**
 * Test for memory pool optimization and configuration file support
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>

#include "../src/ll_queue.h"
#include "../src/memory_pool.h"
#include "../lib/u_async.h"
#include "../lib/debug_config.h"

static int test_callback_count = 0;

static void test_callback(ll_queue_t* q, ll_entry_t* entry, void* arg) {
    (void)q; (void)entry; (void)arg;
    test_callback_count++;
}

static void test_waiter_callback(ll_queue_t* q, void* arg) {
    (void)q; (void)arg;
    test_callback_count++;
}

int main() {
    printf("=== Memory Pool and Config File Test ===\n");
    
    // Test 1: Memory pool optimization
    printf("Test 1: Memory pool optimization...\n");
    
    uasync_t* ua = uasync_create();
    if (!ua) {
        printf("Failed to create uasync\n");
        return 1;
    }
    
    // Create queue with memory pools enabled
    ll_queue_t* queue = queue_new_with_pools(ua, 1);
    if (!queue) {
        printf("Failed to create queue with pools\n");
        uasync_destroy(ua);
        return 1;
    }
    
    // Test multiple waiter allocations to trigger pool usage
    queue_waiter_t* waiters[10];
    for (int i = 0; i < 10; i++) {
        waiters[i] = queue_wait_threshold(queue, i * 2, 0, test_waiter_callback, NULL);
    }
    
    // Add some entries and trigger waiters
    for (int i = 0; i < 5; i++) {
        ll_entry_t* entry = queue_entry_new(10);
        queue_entry_put(queue, entry);
    }
    
    // Remove entries to trigger waiter callbacks
    for (int i = 0; i < 5; i++) {
        ll_entry_t* retrieved = queue_entry_get(queue);
        if (retrieved) {
            queue_entry_free(retrieved);
        }
    }
    
    // Cancel remaining waiters
    for (int i = 0; i < 10; i++) {
        if (waiters[i]) {
            queue_cancel_wait(queue, waiters[i]);
        }
    }
    
    // Get pool statistics
    size_t allocations, reuse_count;
    queue_get_pool_stats(queue, &allocations, &reuse_count);
    
    printf("Pool statistics: allocations=%zu, reuse_count=%zu\n", allocations, reuse_count);
    printf("Pool efficiency: %.1f%%\n", 
           allocations > 0 ? (100.0 * reuse_count / allocations) : 0.0);
    
    queue_free(queue);
    uasync_destroy(ua);
    
    printf("Memory pool test: PASS\n\n");
    
    // Test 2: Configuration file support
    printf("Test 2: Configuration file support...\n");
    
    // Create a test configuration file
    const char* config_file = "/tmp/debug_test.conf";
    FILE* f = fopen(config_file, "w");
    if (f) {
        fprintf(f, "# Test debug configuration file\n");
        fprintf(f, "ll_queue:debug\n");
        fprintf(f, "uasync:info\n");
        fprintf(f, "memory:warn\n");
        fprintf(f, "# This is a comment\n");
        fprintf(f, "etcp:error\n");
        fclose(f);
        
        // Parse the configuration file
        if (debug_parse_config_file(config_file) == 0) {
            printf("Configuration file parsed successfully\n");
            
            // Test that configuration was applied
            if (debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_LL_QUEUE)) {
                printf("LL_QUEUE debug level correctly set\n");
            }
            if (debug_should_output(DEBUG_LEVEL_INFO, DEBUG_CATEGORY_UASYNC)) {
                printf("UASYNC info level correctly set\n");
            }
            if (!debug_should_output(DEBUG_LEVEL_DEBUG, DEBUG_CATEGORY_ETCP)) {
                printf("ETCP correctly limited to error level\n");
            }
            
            // Test hot reload functionality
            printf("Testing hot reload...\n");
            if (debug_enable_config_reload(config_file, 1) == 0) {
                printf("Hot reload enabled successfully\n");
                
                // Modify the file
                f = fopen(config_file, "a");
                if (f) {
                    fprintf(f, "connection:trace\n");
                    fclose(f);
                    
                    // Wait for reload
                    sleep(2);
                    
                    if (debug_should_output(DEBUG_LEVEL_TRACE, DEBUG_CATEGORY_CONNECTION)) {
                        printf("Hot reload worked: connection category updated to trace\n");
                    }
                }
                
                debug_disable_config_reload();
                printf("Hot reload disabled\n");
            } else {
                printf("Failed to enable hot reload\n");
            }
            
        } else {
            printf("Failed to parse configuration file\n");
        }
        
        unlink(config_file);
    } else {
        printf("Failed to create test configuration file\n");
    }
    
    printf("Configuration file test: PASS\n");
    
    printf("\n=== All tests completed successfully ===\n");
    return 0;
}