/* The Ebb Web Server
 * Copyright (c) 2008 Ry Dahl. This software is released under the MIT 
 * License. See README file for details.
 */
#ifndef ebb_h
#define ebb_h
#define EV_STANDALONE 1
#include <ev.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <glib.h>
#include "parser.h"
 
typedef struct ebb_server ebb_server;
typedef struct ebb_client ebb_client;
#define EBB_VERSION "0.1.0"
#define EBB_BUFFERSIZE (1024 * (80 + 33))
#define EBB_MAX_CLIENTS 200
#define EBB_TIMEOUT 30.0
#define EBB_MAX_ENV 500
#define EBB_TCP_COMMON          \
  unsigned open : 1;            \
  int fd;                       \
  struct sockaddr_in sockaddr;
 
/*** Ebb Client ***/
void ebb_client_close(ebb_client*);
/* user MUST call this function on each client passed by the request_cb */
void ebb_client_release(ebb_client*);
int ebb_client_read(ebb_client *client, char *buffer, int length);
void ebb_client_write_status(ebb_client*, int status, const char *human_status);
void ebb_client_write_header(ebb_client*, const char *field, const char *value);
void ebb_client_write(ebb_client*, const char *data, int length);
void ebb_client_begin_transmission( ebb_client *client);
 
struct ebb_env_item {
  enum { EBB_FIELD_VALUE_PAIR
       , EBB_REQUEST_METHOD
       , EBB_REQUEST_URI
       , EBB_FRAGMENT
       , EBB_REQUEST_PATH
       , EBB_QUERY_STRING
       , EBB_HTTP_VERSION
       , EBB_SERVER_PORT
       , EBB_CONTENT_LENGTH
       } type;
 const char *field;
 int field_length;
 const char *value;
 int value_length;
};
 
struct ebb_client {
  EBB_TCP_COMMON
  
  unsigned int in_use : 1;
  
  ebb_server *server;
  http_parser parser;
  
  char *request_buffer;
  ev_io read_watcher;
  size_t read, nread_from_body;
  
  char upload_file_filename[200];
  FILE *upload_file;
  
  int content_length;
  
  ev_io write_watcher;
  GString *response_buffer;
  size_t written;
  
  ev_timer timeout_watcher;
  
  unsigned int status_written : 1;
  unsigned int headers_written : 1;
  unsigned int body_written : 1;
  unsigned int began_transmission : 1;
  
  /* the ENV structure */
  int env_size;
  struct ebb_env_item env[EBB_MAX_ENV];
};
 
/*** Ebb Server ***/
 
typedef void (*ebb_request_cb)(ebb_client*, void*);
 
ebb_server* ebb_server_alloc(void);
void ebb_server_free(ebb_server*);
void ebb_server_init( ebb_server *server
                    , struct ev_loop *loop
                    , ebb_request_cb request_cb
                    , void *request_cb_data
                    );
int ebb_server_listen_on_port(ebb_server*, const int port);
int ebb_server_listen_on_socket(ebb_server*, const char *socketpath);
void ebb_server_unlisten(ebb_server*);
 
struct ebb_server {
  EBB_TCP_COMMON
  char *port;
  char *socketpath;
  ev_io request_watcher;
  ebb_client clients[EBB_MAX_CLIENTS];
  struct ev_loop *loop;
  void *request_cb_data;
  ebb_request_cb request_cb;
};
 
#endif