--- src/client/scanner.h ---

#ifndef SCANNER_H
#define SCANNER_H

#include "chunk.h"
#include "queue.h"
typedef struct {
  Queue *directories;
} DirectoryScanner;

DirectoryScanner *directory_scanner_create(char *root_directory);
Chunk *directory_scanner_next(DirectoryScanner *scanner);
void directory_scanner_destroy(DirectoryScanner *scanner);

#endif
--- src/shared/queue.h ---

#ifndef QUEUE_H
#define QUEUE_H

#include <stdbool.h>
#include <threads.h>

typedef struct Queue {
  void **items;
  int front;
  int rear;
  int size;
  int capacity;
  void (*item_destroyer)(void *item);
} Queue;

Queue *queue_create(int capacity, void (*destroyer)(void *item));
void queue_destroy(Queue *queue);
bool queue_is_empty(Queue *queue);
bool queue_is_full(Queue *queue);
void queue_double_capacity(Queue *queue);
void queue_enqueue(Queue *queue, void *item);
void queue_enqueue_multithreaded(Queue *queue, void *item, mtx_t *mutex,
                                 cnd_t *condition_not_empty,
                                 cnd_t *condition_not_full);
void *queue_dequeue(Queue *queue);
void *queue_dequeue_multithreaded(Queue *queue, mtx_t *mutex,
                                  cnd_t *condition_not_empty,
                                  cnd_t *condition_not_full,
                                  bool *other_thread_done);

#endif
--- src/shared/config.h ---

#ifndef CONFIG_H
#define CONFIG_H

#include <stdbool.h>

typedef struct Config {
  char *version;
  char *send_directory;
  char *receive_root_directory;
  bool save_to_disk;
  bool use_multithreading;
  bool use_chunk_serialization;
  bool use_compression;
  bool use_multiprocessing;
  int num_connections;
} Config;

Config *config_create(char *version, char *send_directory,
                      char *receive_directory, bool save_to_disk,
                      bool use_multithreading, bool use_chunk_serialization,
                      bool use_compression, bool use_multiprocessing,
                      int num_connections);
void config_delete(Config *config);
void config_send(int file_descriptor, Config *config);
Config *config_receive(int file_descriptor);

#endif
--- src/shared/array_list.h ---

#ifndef ARRAY_LIST_H
#define ARRAY_LIST_H

#define INITIAL_ARRAY_SIZE 100

typedef struct ArrayList {
  void **items;
  int size;
  int capacity;
  void (*item_destroyer)(void *item);
} ArrayList;

ArrayList *array_list_create(void (*item_destroyer)(void *item));
void array_list_delete(ArrayList *array_list);
void array_list_clear(ArrayList *array_list);
void array_list_extend(ArrayList *array_list);
void array_list_add(ArrayList *array_list, void *item);
void **array_list_to_array(ArrayList *array_list);

#endif
--- src/shared/log.h ---

#ifndef LOG_H
#define LOG_H

typedef enum {
  LOG_LEVEL_DEBUG,
  LOG_LEVEL_INFO,
  LOG_LEVEL_WARNING,
  LOG_LEVEL_ERROR
} LogLevel;

void log_message(LogLevel log_level, char *message, ...);

#endif
--- src/shared/chunk.h ---

#ifndef CHUNK_H
#define CHUNK_H

#include "socket.h"
#include <sys/stat.h>

#define DESIRED_CHUNK_SIZE 10 * 1024 * 1024
#define FILE_PATH_SEPERATOR "#&&SEPP&&#"
#define FILE_PATH_DATA_SEPERATOR "#&&SEPD&&#"

typedef struct {
  char *path;
  struct stat stats;
  char *data;
} File;

typedef struct {
  char *path;
  DataFragment *data_fragment;
} FileReceive;

typedef struct {
  File **items;
  int element_count;
} Chunk;

typedef struct {
  void *data;
  unsigned long long data_size;
} Data;

File *file_create(const char *path, struct stat *stats);
void file_destroy(void *item);
void file_load_data(File *file);
void file_print(void *item);
void file_content_to_buffer(File *file, char *buffer);

FileReceive *file_receive_create(char *path, DataFragment *data_fragment);
void file_receive_destroy(void *file_receive);

Chunk *chunk_create(File **items, int element_count);
void chunk_destroy(void *chunk);
void chunk_print(void *chunk);
Data *chunk_format(Chunk *chunk);
Data *chunk_compress(Chunk *chunk);

Data *chunk_data_create(void *data, unsigned long long data_size);
void chunk_data_delete(void *chunk);
void chunk_data_to_disk(Data *chunk, char *root_directory);
#endif
--- src/shared/utils.h ---

#ifndef UTILS_H
#define UTILS_H

void mkdir_r(char *path);
char *str_dup(char *string);
void to_disk(char *path, void *data, unsigned long long data_size);
char *path_cat(char *path1, char *path2);

#endif
--- src/shared/multiprocessing.h ---

#ifndef MULTIPROCESSING_H
#define MULTIPROCESSING_H

#include <threads.h>

#include "config.h"
#include "queue.h"

typedef struct {
  Config *config;
  Queue *queue_scanner;
  mtx_t mutex_scanner;
  cnd_t condition_not_full_scanner;
  cnd_t condition_not_empty_scanner;
  bool scanner_done;
  Queue *queue_loader;
  mtx_t mutex_loader;
  cnd_t condition_not_full_loader;
  cnd_t condition_not_empty_loader;
  bool loader_done;
} PipelineContextSender;

typedef struct PipelineContextReceiver {
  Queue *queue;
  Config *config;
  int file_descriptor;
  mtx_t mutex;
  cnd_t condition_not_full;
  cnd_t condition_not_empty;
  bool receiver_done;
} PipelineContextReceiver;

PipelineContextSender *pipeline_context_sender_create(Config *config,
                                                      Queue *queue_scanner,
                                                      Queue *queue_loader);
void pipeline_context_sender_destroy(PipelineContextSender *context);
PipelineContextReceiver *pipeline_context_receiver_create(Config *config,
                                                          Queue *queue_receiver,
                                                          int file_descriptor);
void pipeline_context_receiver_destroy(PipelineContextReceiver *context);
#endif
--- src/shared/socket.h ---

#ifndef SOCKET_H
#define SOCKET_H

#include "array_list.h"
#include <netinet/in.h>

typedef unsigned long long NET_SIZE;
typedef int Status;
enum NET_STATUS { OK, ERROR, FINISHED, NEXT };

typedef struct Server {
  struct sockaddr_in address;
  unsigned int address_length;
  int file_descriptor;
} Server;

Server *server_create(int port);
void server_listen(Server *server, void (*handler)(int file_descriptor));
void server_delete(Server *server);

typedef struct Client {
  struct sockaddr_in address;
  unsigned int address_length;
  int file_descriptor;
} Client;

typedef struct DataFragment {
  void *data;
  unsigned long long size;
} DataFragment;

Client *client_create();
void client_disconnect(Client *client);
void client_delete(Client *client);
void client_connect(Client *client, char *host, int port);

DataFragment *data_fragment_create(void *data, unsigned long long size);
void data_fragment_delete(void *data_fragment);

void send_n_data(int file_descriptor, void *data, NET_SIZE data_size);
void receive_n_data(int file_descriptor, void *data, NET_SIZE data_size);
void send_str(int file_descriptor, char *data);
char *receive_str(int file_descriptor);
void send_data(int file_descriptor, void *data, unsigned long long data_size);
DataFragment *receive_data(int file_descriptor);
void send_int(int file_descriptor, int data);
int receive_int(int file_descriptor);
void send_status(int file_descriptor, Status status);
Status receive_status(int file_descriptor);

#endif
--- src/client/client.c ---

#include <stdio.h>
#include <string.h>
#include <threads.h>
#include <unistd.h>

#include "chunk.h"
#include "config.h"
#include "log.h"
#include "multiprocessing.h"
#include "queue.h"
#include "scanner.h"
#include "socket.h"
#include "utils.h"
#include <dirent.h>

int send_chunk(Client *client, Chunk *chunk, bool use_compression) {
  if (use_compression) {
    Data *data = chunk_compress(chunk);
    send_data(client->file_descriptor, data->data, data->data_size);
  } else {
    for (int i = 0; i < chunk->element_count; i++) {
      send_status(client->file_descriptor, NEXT);
      File *file = chunk->items[i];
      send_str(client->file_descriptor, file->path);
      send_data(client->file_descriptor, file->data, file->stats.st_size);
    }
    send_status(client->file_descriptor, FINISHED);
    if (receive_status(client->file_descriptor) != OK)
      return -1;
  }
  return 0;
}

int scan_directory_multithreaded(void *pipeline_context) {
  PipelineContextSender *context = (PipelineContextSender *)pipeline_context;
  mtx_lock(&context->mutex_scanner);
  DirectoryScanner *scanner =
      directory_scanner_create(context->config->send_directory);
  mtx_unlock(&context->mutex_scanner);

  Chunk *current_chunk;
  while ((current_chunk = directory_scanner_next(scanner)) != NULL)
    queue_enqueue_multithreaded(context->queue_scanner, current_chunk,
                                &context->mutex_scanner,
                                &context->condition_not_empty_scanner,
                                &context->condition_not_full_scanner);
  mtx_lock(&context->mutex_scanner);
  context->scanner_done = true;
  cnd_signal(&context->condition_not_empty_scanner);
  mtx_unlock(&context->mutex_scanner);

  directory_scanner_destroy(scanner);
  return thrd_success;
}

int load_files_multithreaded(void *pipeline_context) {
  PipelineContextSender *context = (PipelineContextSender *)pipeline_context;
  while (true) {
    Chunk *chunk = queue_dequeue_multithreaded(
        context->queue_scanner, &context->mutex_scanner,
        &context->condition_not_empty_scanner,
        &context->condition_not_full_scanner, &context->scanner_done);
    if (chunk == NULL) {
      mtx_lock(&context->mutex_loader);
      context->loader_done = true;
      cnd_signal(&context->condition_not_empty_loader);
      mtx_unlock(&context->mutex_loader);
      return thrd_success;
    }
    for (int i = 0; i < chunk->element_count; i++)
      file_load_data(chunk->items[i]);
    queue_enqueue_multithreaded(context->queue_loader, chunk,
                                &context->mutex_loader,
                                &context->condition_not_empty_loader,
                                &context->condition_not_full_loader);
  }
}

int send_chunks_multithreaded(void *pipeline_context) {
  PipelineContextSender *context = (PipelineContextSender *)pipeline_context;
  bool use_compression = context->config->use_compression;
  Client *client = client_create();
  client_connect(client, "127.0.0.1", 8080);
  config_send(client->file_descriptor, context->config);

  while (true) {
    Chunk *current_chunk = queue_dequeue_multithreaded(
        context->queue_loader, &context->mutex_loader,
        &context->condition_not_empty_loader,
        &context->condition_not_full_loader, &context->loader_done);
    if (current_chunk == NULL) {
      client_disconnect(client);
      client_delete(client);
      return thrd_success;
    }
    send_chunk(client, current_chunk, use_compression);
    chunk_destroy(current_chunk);
  }
}

int send_files(Config *config) {
  Client *client = client_create();
  client_connect(client, "127.0.0.1", 8080);
  config_send(client->file_descriptor, config);
  DirectoryScanner *scanner = directory_scanner_create(config->send_directory);
  Chunk *current_chunk;
  while ((current_chunk = directory_scanner_next(scanner)) != NULL) {
    chunk_print(current_chunk);
    for (int i = 0; i < current_chunk->element_count; i++)
      file_load_data(current_chunk->items[i]);
    send_chunk(client, current_chunk, config->use_compression);
    chunk_destroy(current_chunk);
  }
  printf("FINISHED");
  directory_scanner_destroy(scanner);
  client_disconnect(client);
  client_delete(client);
  return 0;
}

void handle_arg(char *argument_given, char *argument_to_set, bool *result,
                char *message) {
  if (strcmp(argument_given, argument_to_set) == 0) {
    *result = true;
    log_message(LOG_LEVEL_INFO, message);
  }
}

int send_files_multithreaded(Config *config) {
  PipelineContextSender *context =
      pipeline_context_sender_create(config, queue_create(100, chunk_destroy),
                                     queue_create(100, chunk_destroy));

  thrd_t scanner, loader, sender;
  if (thrd_create(&scanner, scan_directory_multithreaded, context) !=
          thrd_success ||
      thrd_create(&loader, load_files_multithreaded, context) != thrd_success ||
      thrd_create(&sender, send_chunks_multithreaded, context) !=
          thrd_success) {
    perror("Error creating threads.\n");
    return 1;
  }

  thrd_join(scanner, NULL);
  thrd_join(loader, NULL);
  thrd_join(sender, NULL);

  pipeline_context_sender_destroy(context);
  return 0;
}

int send_files_multiprocessed(Config *config) {
  int cores = sysconf(_SC_NPROCESSORS_ONLN);
  int pid = fork();
  if (pid == -1) {
    perror("Error Forking!");
    return 1;
  } else if (pid == 0) {
  }
  for (int i = 0; i < cores; i++) {
    int pid = fork();
    if (pid == -1) {
      perror("Error forking!");
      return 1;
    } else if (pid == 0) {
    }
  }
  return 0;
}

int main(int argc, char *argv[]) {
  Config *config = config_create(
      str_dup("1.0.0"), str_dup("/home/taptap/Nextcloud/Uni/moodle/MINT-Raum"),
      str_dup("./data_copied"), false, false, false, false, false, 1);
  for (int i = 1; i < argc; i++) {
    handle_arg(argv[i], "-m", &config->use_multithreading,
               "Enabled Multithreading");
    handle_arg(argv[i], "-s", &config->use_chunk_serialization,
               "Enabled Chunk Serialization");
    handle_arg(argv[i], "-c", &config->use_compression, "Enabled Compression");
    handle_arg(argv[i], "-p", &config->use_multiprocessing,
               "Enabled Multiprocessing");
  }

  if (config->use_multithreading)
    return send_files_multithreaded(config);
  else if (config->use_multiprocessing)
    return send_files_multiprocessed(config);
  return send_files(config);
}
--- src/client/scanner.c ---

#include "scanner.h"
#include "array_list.h"
#include "chunk.h"
#include "queue.h"
#include "utils.h"
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

DirectoryScanner *directory_scanner_create(char *root_directory) {
  DirectoryScanner *scanner = malloc(sizeof(DirectoryScanner));
  scanner->directories = queue_create(100, free);
  queue_enqueue(scanner->directories, str_dup(root_directory));
  return scanner;
}

void directory_scanner_destroy(DirectoryScanner *scanner) {
  if (scanner == NULL)
    return;
  queue_destroy(scanner->directories);
  free(scanner);
}

Chunk *chunk_data_to_chunk(ArrayList *chunk_data) {
  void **chunk_items = array_list_to_array(chunk_data);
  Chunk *chunk = chunk_create((File **)chunk_items, chunk_data->size);
  free(chunk_items);
  chunk_data->item_destroyer = NULL;
  array_list_delete(chunk_data);
  return chunk;
}

Chunk *directory_scanner_next(DirectoryScanner *scanner) {
  ArrayList *chunk_data = array_list_create(file_destroy);
  unsigned long long chunk_data_size = 0;

  while (!queue_is_empty(scanner->directories)) {
    char *path = (char *)queue_dequeue(scanner->directories);
    DIR *dir;
    struct dirent *entry;
    dir = opendir(path);
    if (dir == NULL) {
      perror("Could not open directory!");
      exit(EXIT_FAILURE);
    }
    printf("%s", path);
    while ((entry = readdir(dir)) != NULL) {
      if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) {
        continue;
      }
      char *cur_path = path_cat(path, entry->d_name);
      struct stat stats;
      stat(cur_path, &stats);
      if (!S_ISREG(stats.st_mode))
        queue_enqueue(scanner->directories, (void *)cur_path);
      else {
        File *file = file_create(cur_path, &stats);
        array_list_add(chunk_data, file);
        chunk_data_size += file->stats.st_size;
        if (chunk_data_size > DESIRED_CHUNK_SIZE)
          return chunk_data_to_chunk(chunk_data);
        free(cur_path);
      }
    }
    closedir(dir);
    free(path);
  }
  if (chunk_data->size > 0)
    return chunk_data_to_chunk(chunk_data);
  return NULL;
}
--- src/shared/multiprocessing.c ---

#include "multiprocessing.h"
#include "config.h"
#include "queue.h"
#include <stdio.h>
#include <stdlib.h>
#include <threads.h>

PipelineContextSender *pipeline_context_sender_create(Config *config,
                                                      Queue *queue_scanner,
                                                      Queue *queue_loader) {
  PipelineContextSender *context = malloc(sizeof(PipelineContextSender));
  context->config = config;
  context->queue_scanner = queue_scanner;
  context->queue_loader = queue_loader;
  context->scanner_done = false;
  context->loader_done = false;
  if (mtx_init(&context->mutex_scanner, mtx_plain) != thrd_success ||
      cnd_init(&context->condition_not_full_scanner) != thrd_success ||
      cnd_init(&context->condition_not_empty_scanner) != thrd_success ||
      mtx_init(&context->mutex_loader, mtx_plain) != thrd_success ||
      cnd_init(&context->condition_not_full_loader) != thrd_success ||
      cnd_init(&context->condition_not_empty_loader) != thrd_success) {
    perror("Error initializing synchronization objects!");
    exit(EXIT_FAILURE);
  }
  return context;
}

void pipeline_context_sender_destroy(PipelineContextSender *context) {
  config_delete(context->config);
  queue_destroy(context->queue_scanner);
  queue_destroy(context->queue_loader);
  mtx_destroy(&context->mutex_scanner);
  cnd_destroy(&context->condition_not_full_scanner);
  cnd_destroy(&context->condition_not_empty_scanner);
  mtx_destroy(&context->mutex_loader);
  cnd_destroy(&context->condition_not_full_loader);
  cnd_destroy(&context->condition_not_empty_loader);
  free(context);
}

PipelineContextReceiver *pipeline_context_receiver_create(Config *config,
                                                          Queue *queue,
                                                          int file_descriptor) {
  PipelineContextReceiver *context = malloc(sizeof(PipelineContextReceiver));
  context->config = config;
  context->queue = queue;
  context->file_descriptor = file_descriptor;
  context->receiver_done = false;
  if (mtx_init(&context->mutex, mtx_plain) != thrd_success ||
      cnd_init(&context->condition_not_full) != thrd_success ||
      cnd_init(&context->condition_not_empty) != thrd_success) {
    perror("Error initializing synchronization objects!");
    exit(EXIT_FAILURE);
  }
  return context;
}

void pipeline_context_receiver_destroy(PipelineContextReceiver *context) {
  config_delete(context->config);
  queue_destroy(context->queue);
  mtx_destroy(&context->mutex);
  cnd_destroy(&context->condition_not_full);
  cnd_destroy(&context->condition_not_empty);
  free(context);
}
--- src/shared/array_list.c ---

#include "array_list.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

ArrayList *array_list_create(void (*item_destroyer)(void *item)) {
  ArrayList *list = (ArrayList *)malloc(sizeof(ArrayList));
  if (list == NULL) {
    perror("FATAL ERROR: Could not allocate memory for array list struct");
    exit(EXIT_FAILURE);
  }

  list->items = malloc(INITIAL_ARRAY_SIZE * sizeof(void *));
  if (list->items == NULL) {
    perror("FATAL ERROR: Could not allocate memory for list items");
    free(list);
    exit(EXIT_FAILURE);
  }
  list->size = 0;
  list->capacity = INITIAL_ARRAY_SIZE;
  list->item_destroyer = item_destroyer;
  return list;
}

void array_list_delete(ArrayList *array_list) {
  if (array_list == NULL)
    return;
  if (array_list->item_destroyer != NULL) {
    for (int i = 0; i < array_list->size; i++) {
      array_list->item_destroyer(array_list->items[i]);
      array_list->items[i] = NULL;
    }
  }
  free(array_list->items);
  free(array_list);
}

void array_list_clear(ArrayList *array_list) {
  if (array_list == NULL)
    return;
  for (int i = 0; i < array_list->size; i++)
    array_list->items[i] = NULL;
  array_list->size = 0;
}

void array_list_extend(ArrayList *array_list) {
  if (array_list == NULL)
    return;
  int new_capacity = array_list->capacity * 2;
  if (new_capacity == 0)
    new_capacity = INITIAL_ARRAY_SIZE;
  array_list->items = realloc(array_list->items, new_capacity * sizeof(void *));
  if (array_list->items == NULL) {
    perror("FATAL ERROR: Could not reallocate memory for array list struct");
    exit(EXIT_FAILURE);
  }
  array_list->capacity = new_capacity;
}

void array_list_add(ArrayList *array_list, void *item) {
  if (array_list == NULL) {
    return;
  }
  if (array_list->capacity == array_list->size) {
    array_list_extend(array_list);
  }
  array_list->items[array_list->size] = item;
  array_list->size += 1;
}

void **array_list_to_array(ArrayList *array_list) {
  if (array_list == NULL) {
    return NULL;
  }
  void **array = malloc(array_list->size * sizeof(void *));
  if (array == NULL) {
    perror("Could not malloc space for array from array list!");
    return NULL;
  }
  memcpy(array, array_list->items, array_list->size * sizeof(void *));
  return array;
}
--- src/shared/utils.c ---

#include "utils.h"
#include "libgen.h"
#include "sys/stat.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void mkdir_r(char *path) {
  char *path_duplicate = malloc(strlen(path) + 1);
  strcpy(path_duplicate, path);
  char *path_current = (char *)malloc((strlen(path) + 2) * sizeof(char));
  char *path_current_position = path_current;
  const char *delimiter = "/";
  char *part = strtok(path_duplicate, delimiter);
  // struct stat st;
  while (part != NULL) {
    strcpy(path_current_position, part);
    path_current_position += strlen(part) * sizeof(char);
    strcpy(path_current_position, "/");
    path_current_position += sizeof(char);
    struct stat st;
    if (stat(path_current, &st) != 0) {
      if (mkdir(path_current, 0755) != 0) {
        perror("Could not create directory");
        exit(EXIT_FAILURE);
      }
    }
    part = strtok(NULL, delimiter);
  }
  free(path_duplicate);
  free(path_current);
}

char *str_dup(char *string) {
  if (string == NULL)
    return NULL;
  char *new_string = (char *)malloc(strlen(string) + 1);
  strcpy(new_string, string);
  return new_string;
}

void to_disk(char *path, void *data, unsigned long long data_size) {
  char *directory = str_dup(path);
  directory = dirname(directory);
  mkdir_r(directory);
  FILE *file_pointer = fopen(path, "wb");
  if (file_pointer == NULL) {
    perror("Could not open File");
    exit(EXIT_FAILURE);
  }
  fwrite(data, 1, data_size, file_pointer);
  fclose(file_pointer);
  free(directory);
}

char *path_cat(char *path1, char *path2) {
  if (path1 == NULL || *path1 == '\0')
    return str_dup(path2);
  if (path2 == NULL || *path2 == '\0')
    return str_dup(path1);
  int path1_len = strlen(path1);
  int path2_len = strlen(path2);
  char *path2_pointer = path2;
  if (path1[path1_len - 1] == '/')
    path1_len -= 1;
  if (path2[0] == '/') {
    path2_pointer += 1;
    path2_len -= 1;
  }
  char *new_path = malloc(path1_len + path2_len + 2);
  memcpy(new_path, path1, path1_len);
  new_path[path1_len] = '/';
  memcpy(new_path + path1_len + 1, path2_pointer, path2_len);
  new_path[path1_len + path2_len + 1] = '\0';
  return new_path;
}
--- src/shared/queue.c ---

#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <threads.h>

#include "queue.h"

Queue *queue_create(int capacity, void (*destroyer)(void *item)) {
  Queue *queue = (Queue *)malloc(sizeof(Queue));
  if (queue == NULL) {
    perror("FATAL ERROR: Could not allocate memory for queue structure");
    exit(EXIT_FAILURE);
  }

  queue->items = malloc(capacity * sizeof(void *));
  if (queue->items == NULL) {
    perror("FATAL ERROR: Could not allocate memory for queue items");
    free(queue);
    exit(EXIT_FAILURE);
  }

  for (int i = 0; i < capacity; ++i) {
    queue->items[i] = NULL;
  }

  queue->capacity = capacity;
  queue->front = 0;
  queue->rear = 0;
  queue->size = 0;
  queue->item_destroyer = destroyer;

  return queue;
}

void queue_destroy(Queue *queue) {
  if (queue == NULL)
    return;

  for (int i = 0; i < queue->size; ++i) {
    int index = (queue->front + i) % queue->capacity;
    queue->item_destroyer(queue->items[index]);
  }
  free(queue->items);
  free(queue);
}

bool queue_is_empty(Queue *queue) {
  if (queue == NULL)
    return true;
  return queue->size == 0;
}

bool queue_is_full(Queue *queue) {
  if (queue == NULL)
    return false;
  return queue->size == queue->capacity;
}

void queue_double_capacity(Queue *queue) {
  if (queue == NULL)
    return;
  unsigned int new_capacity = queue->capacity * 2;
  if (new_capacity <= 1)
    new_capacity = 100;
  void **new_items = malloc(new_capacity * sizeof(void *));
  if (new_items == NULL) {
    perror("FATAL ERROR: Could not allocate memory for doubling capacity of "
           "queue.");
    exit(EXIT_FAILURE);
  }
  for (int i = 0; i < queue->size; i++)
    new_items[i] = queue->items[(i + queue->front) % queue->capacity];
  free(queue->items);
  queue->items = new_items;
  queue->front = 0;
  queue->rear = queue->size;
  queue->capacity = new_capacity;
}

void queue_enqueue(Queue *queue, void *item) {
  if (queue == NULL || item == NULL) {
    perror("ERROR: Cannot enqueue with a null queue or item.\n");
    exit(EXIT_FAILURE);
  }
  if (queue_is_full(queue))
    queue_double_capacity(queue);
  queue->items[queue->rear] = item;
  queue->rear = (queue->rear + 1) % queue->capacity;
  queue->size++;
}

void queue_enqueue_multithreaded(Queue *queue, void *item, mtx_t *mutex,
                                 cnd_t *condition_not_empty,
                                 cnd_t *condition_not_full) {
  mtx_lock(mutex);
  while (queue_is_full(queue))
    cnd_wait(condition_not_full, mutex);
  queue_enqueue(queue, item);
  cnd_signal(condition_not_empty);
  mtx_unlock(mutex);
}

void *queue_dequeue(Queue *queue) {
  if (queue == NULL || queue_is_empty(queue)) {
    perror("ERROR: Could not dequeue from null or empty queue.");
    return NULL;
  }

  void *item = queue->items[queue->front];
  queue->items[queue->front] = NULL;
  queue->front = (queue->front + 1) % queue->capacity;
  queue->size--;
  return item;
}

void *queue_dequeue_multithreaded(Queue *queue, mtx_t *mutex,
                                  cnd_t *condition_not_empty,
                                  cnd_t *condition_not_full,
                                  bool *other_thread_done) {
  mtx_lock(mutex);
  while (queue_is_empty(queue) && !*other_thread_done)
    cnd_wait(condition_not_empty, mutex);
  if (queue_is_empty(queue) && *other_thread_done) {
    mtx_unlock(mutex);
    return NULL;
  }
  void *item = queue_dequeue(queue);
  cnd_signal(condition_not_full);
  mtx_unlock(mutex);
  return item;
}
--- src/shared/chunk.c ---

#include <dirent.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <zstd.h>

#include "chunk.h"
#include "log.h"
#include "socket.h"

File *file_create(const char *path, struct stat *stats) {
  File *file = (File *)malloc(sizeof(File));
  if (file == NULL) {
    perror("FATAL ERROR: Could not allocate memory for file struct");
    exit(EXIT_FAILURE);
  }

  file->stats = *stats;

  int path_len = strlen(path);
  file->path = (char *)malloc(path_len + 1);
  if (file->path == NULL) {
    perror("FATAL ERROR: Could not allocate memory for path file string");
    free(file);
    exit(EXIT_FAILURE);
  }

  strcpy(file->path, path);
  file->data = NULL;
  return file;
}

void file_destroy(void *item) {
  if (item == NULL)
    return;
  File *file = (File *)item;
  free(file->data);
  file->data = NULL;
  free(file->path);
  file->path = NULL;
  free(file);
}

void file_load_data(File *file) {
  if (file == NULL)
    return;
  file->data = malloc(file->stats.st_size);
  if (file->data == NULL) {
    perror("Could not allocate memeor y for file data!");
    exit(EXIT_FAILURE);
  }
  file_content_to_buffer(file, file->data);
}

void file_print(void *item) {
  if (item == NULL)
    return;
  printf("%s\n", ((File *)item)->path);
}

void file_content_to_buffer(File *file, char *buffer) {
  if (buffer == NULL) {
    perror("Buffer is to write file content to is NULL!");
    exit(EXIT_FAILURE);
  }
  FILE *file_pointer = fopen(file->path, "rb");
  if (file_pointer == NULL) {
    perror("Could not open the file!");
    exit(EXIT_FAILURE);
  }
  size_t bytes_read = fread(buffer, 1, file->stats.st_size, file_pointer);
  if (bytes_read != (size_t)file->stats.st_size) {
    perror("Read to many or to less bytes from File!");
    exit(EXIT_FAILURE);
  }
  fclose(file_pointer);
}

FileReceive *file_receive_create(char *path, DataFragment *data_fragment) {
  FileReceive *file = malloc(sizeof(FileReceive));
  file->path = path;
  file->data_fragment = data_fragment;
  return file;
}

void file_receive_destroy(void *file_receive) {
  if (file_receive == NULL)
    return;
  FileReceive *file = (FileReceive *)file_receive;
  data_fragment_delete(file->data_fragment);
  free(file->path);
  free(file);
}

Chunk *chunk_create(File **items, int element_count) {
  Chunk *chunk = (Chunk *)malloc(sizeof(Chunk));
  if (chunk == NULL) {
    perror("FATAL ERROR: Could not allocate memory for chunk structure");
    exit(EXIT_FAILURE);
  }

  chunk->items = (File **)malloc(element_count * sizeof(File *));
  if (chunk->items == NULL) {
    perror("FATAL ERROR: Could not allocate memory for items of chunk "
           "structure");
    free(chunk);
    exit(EXIT_FAILURE);
  }

  for (int i = 0; i < element_count; i++) {
    chunk->items[i] = items[i];
  }
  chunk->element_count = element_count;
  return chunk;
}

void chunk_destroy(void *item) {
  if (item == NULL) {
    return;
  }
  Chunk *chunk = (Chunk *)item;
  for (int i = 0; i < chunk->element_count; ++i) {
    if (chunk->items[i] != NULL) {
      file_destroy(chunk->items[i]);
    }
  }
  free(chunk->items);
  free(chunk);
}

void chunk_print(void *item) {
  if (item == NULL)
    return;
  Chunk *chunk = (Chunk *)item;
  for (int i = 0; i < chunk->element_count; ++i)
    if (chunk->items[i] != NULL)
      file_print(chunk->items[i]);
}

Data *chunk_format(Chunk *chunk) {
  unsigned long long buffer_size = 0;
  for (int i = 0; i < chunk->element_count; ++i) {
    buffer_size += sizeof(int);
    buffer_size += strlen(chunk->items[i]->path);
    buffer_size += sizeof(unsigned long long);
    buffer_size += chunk->items[i]->stats.st_size;
  }

  char *data = malloc(buffer_size);
  if (data == NULL) {
    perror("Could not allocate data for ChunkFormated!");
    exit(EXIT_FAILURE);
  }
  char *current_data_pointer = data;
  for (int i = 0; i < chunk->element_count; ++i) {
    File *file = chunk->items[i];
    // add path len
    int path_length = (int)strlen(file->path);
    memcpy(current_data_pointer, &path_length, sizeof(int));
    current_data_pointer += sizeof(int);
    // add path
    memcpy(current_data_pointer, file->path, path_length);
    current_data_pointer += path_length;
    // add file data len
    unsigned long long file_length = file->stats.st_size;
    memcpy(current_data_pointer, &file_length, sizeof(unsigned long long));
    current_data_pointer += sizeof(unsigned long long);
    // add file data
    file_content_to_buffer(file, current_data_pointer);
    current_data_pointer += file_length;
  }
  if (current_data_pointer - data != (long)(long)buffer_size) {
    perror("Buffer of Chunk wasn't filled enough!");
    exit(EXIT_FAILURE);
  }
  return chunk_data_create(data, buffer_size);
}

Data *chunk_compress(Chunk *chunk) {
  unsigned long long data_size = 0;
  for (int i = 0; i < chunk->element_count; i++) {
    data_size += sizeof(unsigned long long);
    data_size += strlen(chunk->items[i]->path);
    data_size += sizeof(unsigned long long);
    data_size += chunk->items[i]->stats.st_size;
  }
  char *data = malloc(data_size);
  char *data_pointer = data;
  for (int i = 0; i < chunk->element_count; i++) {
    // path length
    unsigned long long path_len = strlen(chunk->items[i]->path);
    memcpy(data_pointer, &path_len, sizeof(unsigned long long));
    data_pointer += sizeof(unsigned long long);
    memcpy(data_pointer, chunk->items[i]->path, path_len);
    data_pointer += path_len;
    // file data
    unsigned long long data_size = chunk->items[i]->stats.st_size;
    memcpy(data_pointer, &data_size, sizeof(unsigned long long));
    data_pointer += data_size;
    memcpy(data_pointer, chunk->items[i]->data, data_size);
    data_pointer += data_size;
  }
  size_t compressed_data_size = ZSTD_compressBound(data_size);
  void *compressed_data = malloc(compressed_data_size);
  if (compressed_data == NULL) {
    log_message(ERROR, "Could not allocate memory for compressed Chunk");
    exit(EXIT_FAILURE);
  }
  // TODO
}

Data *chunk_data_create(void *data, unsigned long long data_size) {
  Data *chunk_formated = malloc(sizeof(Data));
  if (chunk_formated == NULL) {
    perror("Could not allocate memory for ChunkFormated");
    exit(EXIT_FAILURE);
  }
  chunk_formated->data = data;
  chunk_formated->data_size = data_size;
  return chunk_formated;
}

void chunk_data_delete(void *chunk) {
  Data *chunk_data = (Data *)chunk;
  free(chunk_data->data);
  free(chunk_data);
}

// void chunk_data_to_disk(ChunkData *chunk_formated, char *root_directory) {
//   char *current_data_pointer = chunk_formated->data;
//   while (current_data_pointer - (char *)chunk_formated->data <
//          chunk_formated->data_size) {
//     // get path length
//     int path_length = 0;
//     memcpy(&path_length, (int *)current_data_pointer, sizeof(int));
//     current_data_pointer += sizeof(int);
//     // get path
//     int path_dir_size =
//         (strlen(root_directory) + path_length + 1) * sizeof(char);
//     char *path = (char *)malloc(path_dir_size);
//     if (path == NULL) {
//       perror("Could not allocate memory for path!");
//       exit(EXIT_FAILURE);
//     }
//     snprintf(path, path_dir_size, "%s%.*s", root_directory, path_length,
//              current_data_pointer);
//     current_data_pointer += sizeof(char) * path_length;
//     // get data length
//     unsigned long long data_size = 0;
//     memcpy(&data_size, (unsigned long long *)current_data_pointer,
//            sizeof(unsigned long long));
//     current_data_pointer += sizeof(unsigned long long);
//     // create File Receive
//     FileReceive *file =
//         file_receive_create(path, data_size, current_data_pointer);
//     file_receive_print(file);
//     file_receive_to_disk(file);
//     current_data_pointer += sizeof(char) * data_size;
//   }
// }
--- src/shared/socket.c ---

#include "socket.h"
#include "log.h"
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

Server *server_create(int port) {
  Server *server = (Server *)malloc(sizeof(Server));
  if (server == NULL) {
    perror("Could not allocate space for Server");
    exit(EXIT_FAILURE);
  }

  int file_descriptor = socket(AF_INET, SOCK_STREAM, 0);
  if (file_descriptor < 0) {
    perror("Could not create Socket!");
    exit(EXIT_FAILURE);
  }
  server->file_descriptor = file_descriptor;
  int opt = 1;
  if (setsockopt(server->file_descriptor, SOL_SOCKET, SO_REUSEADDR, &opt,
                 sizeof(opt))) {
    perror("Error setting a socket option!");
    close(server->file_descriptor);
    free(server);
    exit(EXIT_FAILURE);
  }

  server->address.sin_family = AF_INET;
  server->address.sin_addr.s_addr = INADDR_ANY;
  server->address.sin_port = htons(port);
  server->address_length = sizeof(server->address);

  if (bind(server->file_descriptor, (struct sockaddr *)&server->address,
           server->address_length) < 0) {
    perror("Could not bind server");
    close(server->file_descriptor);
    free(server);
    exit(EXIT_FAILURE);
  }

  return server;
}

void server_delete(Server *server) {
  free(server);
  server = NULL;
};

void server_listen(Server *server, void (*handler)(int file_descriptor)) {
  log_message(LOG_LEVEL_INFO, "Start Listening on Port: %d",
              server->address.sin_port);
  if (listen(server->file_descriptor, 3) < 0) {
    perror("Could not listen on port!");
    exit(EXIT_FAILURE);
  }

  int file_descriptor =
      accept(server->file_descriptor, (struct sockaddr *)&server->address,
             &server->address_length);
  if (server->file_descriptor < 0) {
    perror("Could not accept the connection");
    exit(EXIT_FAILURE);
  }
  log_message(LOG_LEVEL_INFO, "Received Connection");
  handler(file_descriptor);
  close(server->file_descriptor);
  close(file_descriptor);
}

Client *client_create() {
  int file_descriptor = socket(AF_INET, SOCK_STREAM, 0);
  if (file_descriptor < 0) {
    perror("Could not create Socket!");
    exit(EXIT_FAILURE);
  };

  Client *client = (Client *)malloc(sizeof(Client));
  client->file_descriptor = file_descriptor;
  client->address.sin_family = AF_INET;
  client->address_length = sizeof(client->address);
  return client;
}

void client_connect(Client *client, char *host, int port) {
  client->address.sin_port = htons(port);

  if (inet_pton(AF_INET, host, &client->address.sin_addr) <= 0) {
    perror("Could not convert host address!");
    exit(EXIT_FAILURE);
  }

  if (connect(client->file_descriptor, (struct sockaddr *)&client->address,
              client->address_length) < 0) {
    perror("Could not connect to Server!");
    exit(EXIT_FAILURE);
  }
}

void client_disconnect(Client *client) { close(client->file_descriptor); }

void client_delete(Client *client) {
  if (client == NULL)
    return;
  free(client);
}

DataFragment *data_fragment_create(void *data, unsigned long long size) {
  DataFragment *data_fragment = malloc(sizeof(DataFragment));
  data_fragment->data = data;
  data_fragment->size = size;
  return data_fragment;
}

void data_fragment_delete(void *data_fragment) {
  if (data_fragment == NULL)
    return;
  DataFragment *fragment = (DataFragment *)data_fragment;
  free(fragment->data);
  free(fragment);
}

void send_n_data(int file_descriptor, void *data, NET_SIZE data_size) {
  log_message(LOG_LEVEL_DEBUG, "    Sending n Data: %d", data_size);
  NET_SIZE total_bytes_send = 0;
  while (total_bytes_send < data_size) {
    long long bytes_send =
        send(file_descriptor, (char *)data + total_bytes_send,
             data_size - total_bytes_send, 0);
    if (bytes_send == 0) {
      perror("Could not send data!");
      exit(EXIT_FAILURE);
    }
    total_bytes_send += bytes_send;
  }
  log_message(LOG_LEVEL_DEBUG, "    Send n Data: %d", total_bytes_send);
}

void receive_n_data(int file_descriptor, void *data, NET_SIZE data_size) {
  log_message(LOG_LEVEL_DEBUG, "    Receiving n Data: %d", data_size);
  NET_SIZE total_bytes_received = 0;
  while (total_bytes_received < data_size) {
    long long bytes_received =
        recv(file_descriptor, data + total_bytes_received,
             data_size - total_bytes_received, 0);
    if (bytes_received == -1 || bytes_received == 0) {
      perror("Could not receive bytes!");
      exit(EXIT_FAILURE);
    }
    total_bytes_received += bytes_received;
  }
  log_message(LOG_LEVEL_DEBUG, "    Received n Data: %d", total_bytes_received);
}

void send_str(int file_descriptor, char *data) {
  NET_SIZE size = strlen(data);
  send_n_data(file_descriptor, &size, sizeof(NET_SIZE));
  send_n_data(file_descriptor, data, size);
  log_message(LOG_LEVEL_DEBUG, "Send String: %s", data);
}

char *receive_str(int file_descriptor) {
  NET_SIZE size;
  receive_n_data(file_descriptor, &size, sizeof(NET_SIZE));
  char *data = (char *)malloc(size + 1);
  receive_n_data(file_descriptor, data, size);
  data[size] = '\0';
  log_message(LOG_LEVEL_DEBUG, "Received String: %s", data);
  return data;
}

void send_data(int file_descriptor, void *data, unsigned long long data_size) {
  send_n_data(file_descriptor, &data_size, sizeof(unsigned long long));
  send_n_data(file_descriptor, data, data_size);
  log_message(LOG_LEVEL_DEBUG, "Send %lld data", data_size);
}

DataFragment *receive_data(int file_descriptor) {
  unsigned long long size = 0;
  receive_n_data(file_descriptor, &size, sizeof(unsigned long long));
  void *data = malloc(size);
  receive_n_data(file_descriptor, data, size);
  log_message(LOG_LEVEL_DEBUG, "Received %lld data", size);
  return data_fragment_create(data, size);
}

void send_int(int file_descriptor, int data) {
  send_n_data(file_descriptor, &data, sizeof(int));
  log_message(LOG_LEVEL_DEBUG, "Send Int: %d", data);
}

int receive_int(int file_descriptor) {
  int data;
  receive_n_data(file_descriptor, &data, sizeof(int));
  log_message(LOG_LEVEL_DEBUG, "Received Int: %d", data);
  return data;
}

void send_status(int file_descriptor, Status status) {
  send_n_data(file_descriptor, &status, sizeof(Status));
  log_message(LOG_LEVEL_DEBUG, "Send Status: %d", status);
}

Status receive_status(int file_descriptor) {
  Status data;
  receive_n_data(file_descriptor, &data, sizeof(Status));
  log_message(LOG_LEVEL_DEBUG, "Received Status: %d", data);
  return data;
}
--- src/shared/log.c ---

#include "log.h"
#include <stdarg.h>
#include <stdio.h>
#include <time.h>

static const char *log_level_strings[] = {"DEBUG", "INFO", "WARN", "ERROR"};
static LogLevel current_log_level = LOG_LEVEL_DEBUG;

void log_message(LogLevel log_level, char *format, ...) {
  if (log_level < current_log_level)
    return;
  time_t now = time(NULL);
  struct tm *t = localtime(&now);

  // Print timestamp and log level to the file
  printf("%04d-%02d-%02d %02d:%02d:%02d [%s]: ", t->tm_year + 1900,
         t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec,
         log_level_strings[log_level]);

  va_list args;
  va_start(args, format);
  vprintf(format, args);
  va_end(args);
  printf("\n");
}
--- src/shared/config.c ---

#include "config.h"
#include "socket.h"
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>

Config *config_create(char *version, char *send_directory,
                      char *receive_directory, bool save_to_disk,
                      bool use_multithreading, bool use_chunk_serialization,
                      bool use_compression, bool use_multiprocessing,
                      int num_connections) {

  Config *config = malloc(sizeof(Config));
  config->version = version;
  config->send_directory = send_directory;
  config->receive_root_directory = receive_directory;
  config->save_to_disk = save_to_disk;
  config->use_multithreading = use_multithreading;
  config->use_chunk_serialization = use_chunk_serialization;
  config->use_compression = use_compression;
  config->use_multiprocessing = use_multiprocessing;
  config->num_connections = num_connections;
  return config;
}

void config_delete(Config *config) {
  free(config->version);
  free(config->send_directory);
  free(config->receive_root_directory);
  free(config);
}

void config_send(int file_descriptor, Config *config) {
  send_str(file_descriptor, config->version);
  send_str(file_descriptor, config->send_directory);
  send_str(file_descriptor, config->receive_root_directory);
  send_int(file_descriptor, config->save_to_disk);
  send_int(file_descriptor, config->use_multithreading);
  send_int(file_descriptor, config->use_chunk_serialization);
  send_int(file_descriptor, config->use_compression);
  send_int(file_descriptor, config->use_multiprocessing);
  send_int(file_descriptor, config->num_connections);
  if (receive_status(file_descriptor) != OK) {
    perror("Error transmitting config!");
    exit(EXIT_FAILURE);
  }
}

Config *config_receive(int file_descriptor) {
  Config *config = (Config *)malloc(sizeof(Config));
  config->version = receive_str(file_descriptor);
  config->send_directory = receive_str(file_descriptor);
  config->receive_root_directory = receive_str(file_descriptor);
  config->save_to_disk = receive_int(file_descriptor);
  config->use_multithreading = receive_int(file_descriptor);
  config->use_chunk_serialization = receive_int(file_descriptor);
  config->use_compression = receive_int(file_descriptor);
  config->use_multiprocessing = receive_int(file_descriptor);
  config->num_connections = receive_int(file_descriptor);
  send_status(file_descriptor, OK);
  return config;
}
--- src/server/server.c ---

#include "chunk.h"
#include "config.h"
#include "multiprocessing.h"
#include "queue.h"
#include "socket.h"
#include "unistd.h"
#include "utils.h"
#include <stdio.h>
#include <stdlib.h>
#include <threads.h>

FileReceive *receive_file_receive(int file_descriptor) {
  char *path = (char *)receive_str(file_descriptor);
  printf("%s\n", path);
  DataFragment *file_data_fragment = receive_data(file_descriptor);
  FileReceive *file = file_receive_create(path, file_data_fragment);
  return file;
}

int receive_thread(void *pipeline_context) {
  PipelineContextReceiver *context =
      (PipelineContextReceiver *)pipeline_context;
  mtx_lock(&context->mutex);
  int file_descriptor = context->file_descriptor;
  mtx_unlock(&context->mutex);

  while (receive_status(file_descriptor) == NEXT) {
    FileReceive *file = receive_file_receive(file_descriptor);
    queue_enqueue_multithreaded(context->queue, file, &context->mutex,
                                &context->condition_not_empty,
                                &context->condition_not_full);
  }
  mtx_lock(&context->mutex);
  context->receiver_done = true;
  cnd_signal(&context->condition_not_empty);
  mtx_unlock(&context->mutex);
  return thrd_success;
}

int write_thread(void *pipeline_context) {
  PipelineContextReceiver *context =
      (PipelineContextReceiver *)pipeline_context;
  mtx_lock(&context->mutex);
  bool save_to_disk = context->config->save_to_disk;
  char *root_directory = str_dup(context->config->receive_root_directory);
  mtx_unlock(&context->mutex);

  while (true) {
    FileReceive *file = queue_dequeue_multithreaded(
        context->queue, &context->mutex, &context->condition_not_empty,
        &context->condition_not_full, &context->receiver_done);
    if (file == NULL) {
      free(root_directory);
      return thrd_success;
    }
    if (save_to_disk)
      to_disk(path_cat(root_directory, file->path), file->data_fragment->data,
              file->data_fragment->size);
  }
}

int receive_files(Config *config, int file_descriptor) {
  Status status = receive_status(file_descriptor);
  while (status == NEXT) {
    FileReceive *file = receive_file_receive(file_descriptor);
    if (config->save_to_disk)
      to_disk(path_cat(config->receive_root_directory, file->path),
              file->data_fragment->data, file->data_fragment->size);
    file_receive_destroy(file);
    status = receive_status(file_descriptor);
  }
  if (status != FINISHED) {
    send_status(file_descriptor, ERROR);
    return -1;
  }
  send_status(file_descriptor, OK);
  return 0;
}

void handler(int file_descriptor) {
  Config *config = config_receive(file_descriptor);
  if (config->use_multithreading) {
    PipelineContextReceiver *context = pipeline_context_receiver_create(
        config, queue_create(100, file_receive_destroy), file_descriptor);
    thrd_t receiver, writer;
    if (thrd_create(&receiver, receive_thread, context) != thrd_success ||
        thrd_create(&writer, write_thread, context) != thrd_success) {
      perror("Error creating Threads!");
      exit(EXIT_FAILURE);
    }
    thrd_join(receiver, NULL);
    thrd_join(writer, NULL);
    pipeline_context_receiver_destroy(context);
  } else
    receive_files(config, file_descriptor);
  close(file_descriptor);
}

int main() {
  Server *server = server_create(8080);
  server_listen(server, handler);
  server_delete(server);
  return 0;
}
--- Makefile ---

CC = gcc
CFLAGS = -Wall -g -pthread -std=c11 -Isrc/shared -Isrc/server -Isrc/client
LIBS = -lzstd

OBJ_DIR = obj
SRC_DIR = src
SHARED_SRCS = $(wildcard src/shared/*.c)
SHARED_OBJS = $(patsubst $(SRC_DIR)/shared/%.c, $(OBJ_DIR)/shared/%.o, $(SHARED_SRCS))

SERVER = server
SERVER_SRCS = $(wildcard src/server/*.c)
SERVER_OBJS = $(patsubst $(SRC_DIR)/server/%.c, $(OBJ_DIR)/server/%.o, $(SERVER_SRCS))

CLIENT = client
CLIENT_SRCS = $(wildcard src/client/*.c)
CLIENT_OBJS = $(patsubst $(SRC_DIR)/client/%.c, $(OBJ_DIR)/client/%.o, $(CLIENT_SRCS))

all: $(SERVER) $(CLIENT)

$(SERVER): $(SHARED_OBJS) $(SERVER_OBJS)
	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
$(CLIENT): $(SHARED_OBJS) $(CLIENT_OBJS)
	$(CC) $(CFLAGS) -o $@ $^ $(LIBS)

$(OBJ_DIR)/%.o: $(SRC_DIR)/%.c
	@mkdir -p $(dir $@)
	$(CC) $(CFLAGS) -c $< -o $@

.PHONY: all clean

clean:
	rm -r $(OBJ_DIR) $(SERVER) $(CLIENT)