#include "test_multiprocessing.h"
#include "multiprocessing.h"
#include "config.h"
#include "queue.h"
#include "utils.h"
#include "test_utils.h"
#include <stdlib.h>

/* Test pipeline_context_sender_create/destroy with valid arguments */
static void test_sender_create_destroy() {
  Config* cfg = config_create(str_dup("1.0"), str_dup("/src"), str_dup("/dst"), false, false, false,
                              false, false, 0, false, 0);
  EXPECT_NOT_NULL(cfg);

  Queue* q_scanner = queue_create(5, NULL);
  EXPECT_NOT_NULL(q_scanner);

  Queue* q_loader = queue_create(10, NULL);
  EXPECT_NOT_NULL(q_loader);

  PipelineContextSender* ctx = pipeline_context_sender_create(cfg, q_scanner, q_loader);
  EXPECT_NOT_NULL(ctx);
  EXPECT_EQ_STR(ctx->config->version, "1.0");
  EXPECT_EQ_INT(ctx->queue_scanner->capacity, 5);
  EXPECT_EQ_INT(ctx->queue_loader->capacity, 10);
  EXPECT_FALSE(ctx->scanner_done);
  EXPECT_FALSE(ctx->loader_done);
  EXPECT_NULL(ctx->manifest);

  pipeline_context_sender_destroy(ctx);
}

/* Test pipeline_context_receiver_create/destroy with valid arguments */
static void test_receiver_create_destroy() {
  Config* cfg = config_create(str_dup("2.0"), str_dup("/src"), str_dup("/dst"), true, true, false,
                              false, false, 0, false, 0);
  EXPECT_NOT_NULL(cfg);

  Queue* q = queue_create(20, NULL);
  EXPECT_NOT_NULL(q);

  PipelineContextReceiver* ctx = pipeline_context_receiver_create(cfg, q, 42);
  EXPECT_NOT_NULL(ctx);
  EXPECT_EQ_STR(ctx->config->version, "2.0");
  EXPECT_EQ_INT(ctx->queue->capacity, 20);
  EXPECT_EQ_INT(ctx->file_descriptor, 42);
  EXPECT_FALSE(ctx->receiver_done);

  pipeline_context_receiver_destroy(ctx);
}

/* Test that create handles various queue capacities */
static void test_sender_queue_capacities() {
  Config* cfg = config_create(str_dup("3.0"), str_dup("/src"), str_dup("/dst"), false, false, false,
                              false, false, 0, false, 0);
  EXPECT_NOT_NULL(cfg);

  /* Single-element queues */
  Queue* q1 = queue_create(1, NULL);
  Queue* q2 = queue_create(1, NULL);
  PipelineContextSender* ctx = pipeline_context_sender_create(cfg, q1, q2);
  EXPECT_NOT_NULL(ctx);
  EXPECT_EQ_INT(ctx->queue_scanner->capacity, 1);
  EXPECT_EQ_INT(ctx->queue_loader->capacity, 1);
  pipeline_context_sender_destroy(ctx);
}

/* Test that create handles zero-capacity queues */
static void test_sender_zero_capacity() {
  Config* cfg = config_create(str_dup("4.0"), str_dup("/src"), str_dup("/dst"), false, false, false,
                              false, false, 0, false, 0);
  EXPECT_NOT_NULL(cfg);

  Queue* q1 = queue_create(0, NULL);
  Queue* q2 = queue_create(0, NULL);
  PipelineContextSender* ctx = pipeline_context_sender_create(cfg, q1, q2);
  EXPECT_NOT_NULL(ctx);
  EXPECT_EQ_INT(ctx->queue_scanner->capacity, 0);
  EXPECT_EQ_INT(ctx->queue_loader->capacity, 0);
  pipeline_context_sender_destroy(ctx);
}

/* Test receiver with zero file_descriptor */
static void test_receiver_fd_zero() {
  Config* cfg = config_create(str_dup("5.0"), str_dup("/src"), str_dup("/dst"), false, false, false,
                              false, false, 0, false, 0);
  Queue* q = queue_create(5, NULL);
  PipelineContextReceiver* ctx = pipeline_context_receiver_create(cfg, q, 0);
  EXPECT_NOT_NULL(ctx);
  EXPECT_EQ_INT(ctx->file_descriptor, 0);
  EXPECT_FALSE(ctx->receiver_done);
  pipeline_context_receiver_destroy(ctx);
}

void test_multiprocessing() {
  test_sender_create_destroy();
  test_receiver_create_destroy();
  test_sender_queue_capacities();
  test_sender_zero_capacity();
  test_receiver_fd_zero();
}