/*
 +----------------------------------------------------------------------+
 | Swoole                                                               |
 +----------------------------------------------------------------------+
 | Copyright (c) 2012-2015 The Swoole Group                             |
 +----------------------------------------------------------------------+
 | This source file is subject to version 2.0 of the Apache license,    |
 | that is bundled with this package in the file LICENSE, and is        |
 | available through the world-wide-web at the following url:           |
 | http://www.apache.org/licenses/LICENSE-2.0.html                      |
 | If you did not receive a copy of the Apache2.0 license and are unable|
 | to obtain it through the world-wide-web, please send a note to       |
 | license@swoole.com so we can mail you a copy immediately.            |
 +----------------------------------------------------------------------+
 | Author: Tianfeng Han  <mikan.tenny@gmail.com>                        |
 +----------------------------------------------------------------------+
 */

#ifndef SWOOLE_HTTP_H_
#define SWOOLE_HTTP_H_

#include "thirdparty/php_http_parser.h"
#include "thirdparty/multipart_parser.h"

#ifdef SW_USE_HTTP2
#include <nghttp2/nghttp2.h>
#endif

enum http_response_flag
{
    HTTP_RESPONSE_SERVER           = 1u << 1,
    HTTP_RESPONSE_CONNECTION       = 1u << 2,
    HTTP_RESPONSE_CONTENT_LENGTH   = 1u << 3,
    HTTP_RESPONSE_DATE             = 1u << 4,
    HTTP_RESPONSE_CONTENT_TYPE     = 1u << 5,
};

typedef struct
{
    enum php_http_method method;
    int version;
    char *path;
    uint32_t path_len;
    const char *ext;
    uint32_t ext_len;
    uint8_t post_form_urlencoded;

    swString *post_buffer;
    uint32_t post_length;

    zval *zobject;
    zval *zserver;
    zval *zheader;
    zval *zget;
    zval *zpost;
    zval *zcookie;
    zval *zrequest;
    zval *zfiles;
    zval *ztmpfiles;
#if PHP_MAJOR_VERSION >= 7
    zval _zobject;
    zval _zrequest;
    zval _zserver;
    zval _zheader;
    zval _zget;
    zval _zpost;
    zval _zfiles;
    zval _zcookie;
    zval _ztmpfiles;
#endif
} http_request;

typedef struct
{
    enum php_http_method method;
    int version;
    int status;
    zval *zobject;
    zval *zheader;
    zval *zcookie;
    zval *ztrailer;

#if PHP_MAJOR_VERSION >= 7
    zval _zobject;
    zval _zheader;
    zval _zcookie;
    zval _ztrailer;
#endif
} http_response;

typedef struct
{
    int fd;

    uint32_t end :1;
    uint32_t send_header :1;
    uint32_t gzip_enable :1;
    uint32_t gzip_level :4;
    uint32_t chunk :1;
    uint32_t keepalive :1;
    uint32_t http2 :1;
    uint32_t upgrade :1;
    uint32_t detached :1;

    uint32_t request_read :1;
    uint32_t current_header_name_allocated :1;
    uint32_t content_sender_initialized :1;

#ifdef SW_USE_HTTP2
    uint8_t priority;
    uint32_t stream_id;
#endif

    http_request request;
    http_response response;

    php_http_parser parser;
    multipart_parser *mt_parser;
    struct _swoole_http_client *client;

    uint16_t input_var_num;
    char *current_header_name;
    size_t current_header_name_len;
    char *current_input_name;
    char *current_form_data_name;
    size_t current_form_data_name_len;
    char *current_form_data_value;
    zval *current_multipart_header;

} http_context;

typedef struct _swoole_http_client
{
    int fd;
    uint32_t http2 :1;

#ifdef SW_USE_HTTP2
    uint32_t init :1;
    swHashMap *streams;
    nghttp2_hd_inflater *deflater;
    nghttp2_hd_inflater *inflater;
    uint32_t window_size;
    uint32_t remote_window_size;
#endif

} swoole_http_client;

/**
 * WebSocket
 */
int swoole_websocket_onMessage(swEventData *);
int swoole_websocket_onHandshake(swListenPort *port, http_context *);
void swoole_websocket_onOpen(http_context *);
void swoole_websocket_onRequest(http_context *);

/**
 * Http Context
 */
http_context* swoole_http_context_new(swoole_http_client* client TSRMLS_DC);
void swoole_http_context_free(http_context *ctx TSRMLS_DC);
int swoole_http_parse_form_data(http_context *ctx, const char *boundary_str, int boundary_len TSRMLS_DC);

#define swoole_http_server_array_init(name, class)    SW_MAKE_STD_ZVAL(z##name);\
array_init(z##name);\
zend_update_property(swoole_http_##class##_class_entry_ptr, z##class##_object, ZEND_STRL(#name), z##name TSRMLS_CC);\
ctx->class.z##name = sw_zend_read_property(swoole_http_##class##_class_entry_ptr, z##class##_object, ZEND_STRL(#name), 0 TSRMLS_CC);\
sw_copy_to_stack(ctx->class.z##name, ctx->class._z##name);\
sw_zval_ptr_dtor(&z##name);\
z##name = ctx->class.z##name;

#define http_strncasecmp(const_str, at, length) ((length >= sizeof(const_str)-1) &&\
        (strncasecmp(at, ZEND_STRL(const_str)) == 0))

#ifdef SW_USE_HTTP2
/**
 * Http v2
 */
int swoole_http2_onFrame(swoole_http_client *client, swEventData *req);
int swoole_http2_do_response(http_context *ctx, swString *body);
void swoole_http2_free(swoole_http_client *client);
#endif

extern zend_class_entry swoole_http_server_ce;
extern zend_class_entry *swoole_http_server_class_entry_ptr;

extern zend_class_entry swoole_http_response_ce;
extern zend_class_entry *swoole_http_response_class_entry_ptr;

extern zend_class_entry swoole_http_request_ce;
extern zend_class_entry *swoole_http_request_class_entry_ptr;

extern swString *swoole_http_buffer;
#ifdef SW_HAVE_ZLIB
extern swString *swoole_zlib_buffer;
#endif

#endif /* SWOOLE_HTTP_H_ */