#ifndef SCUFENG_HTTP_H_
#define SCUFENG_HTTP_H_

#include <netinet/in.h>
#include <stdint.h>

#include "scufcont/DArray.h"
#include "scufcont/DString.h"

#include "scufeng/engine.h"

#define SE_HTTP_METHODS_X(X) \
    X(SE_METHOD_GET)         \
    X(SE_METHOD_HEAD)        \
    X(SE_METHOD_POST)        \
    X(SE_METHOD_PUT)         \
    X(SE_METHOD_DELETE)      \
    X(SE_METHOD_CONNECT)     \
    X(SE_METHOD_OPTIONS)     \
    X(SE_METHOD_TRACE)       \
    X(SE_METHOD_PATCH)       \
    X(SE_METHOD_QUERY)

#define X(method) method,

typedef enum : uint8_t {
    SE_HTTP_METHODS_X(X)
} SEHttpMethod;

#undef X

typedef struct {
    char *key;
    char *value;
} SEHttpHeader;

SCDARRAY_HEADER(SEHttpHeader, SEHttpHeader)

typedef struct {
    in_port_t port;
    SEHttpMethod method;
    SCDString uri;
    SCDArray_SEHttpHeader headers;
    uint8_t *body;
    size_t body_len;
} SEHttpRequest;

// typedef struct {
//
// } SEHttpResponse;

const char *SEHttpMethod_to_str(const SEHttpMethod method);

/**
  @return SE_OUT_OF_MEMORY
  @return SE_SUCCESS
*/
SEResult SEHttpHeader_alloc(
    SEHttpHeader *const header,
    const char *key,
    const size_t key_len,
    const char *value,
    const size_t value_len
);

void SEHttpHeader_free(SEHttpHeader *const header);
void SEHttpHeader_print(const SEHttpHeader *const header, FILE *o);
size_t SEHttpHeader_data_size(const SEHttpHeader *const header);
size_t SEHttpHeader_data(const SEHttpHeader *const header, uint8_t *const buf);

/**
  @return SE_OUT_OF_MEMORY
  @return SE_SUCCESS
*/
SEResult SEHttpRequest_header_add(SEHttpRequest *const req, const SEHttpHeader *const header);

/**
  @return SE_OUT_OF_MEMORY
  @return SE_SUCCESS
*/
SEResult SEHttpRequest_header_add_c_str(
    SEHttpRequest *const req,
    const char *key,
    const size_t key_len,
    const char *value,
    const size_t value_len
);

/**
  @return SE_OUT_OF_MEMORY
  @return SE_SUCCESS
*/
SEResult SEHttpRequest_alloc(
    SEHttpRequest *const req,
    const char *host,
    const size_t host_len,
    const in_port_t port,
    const SEHttpMethod method,
    const char *uri,
    const size_t uri_len,
    const uint8_t *body,
    const size_t body_len
);

void SEHttpRequest_free(SEHttpRequest *const req);
void SEHttpRequest_print(const SEHttpRequest *const req, FILE *o);
size_t SEHttpRequest_headers_data_size(const SEHttpRequest *const req);
size_t SEHttpRequest_data_size(const SEHttpRequest *const req);
size_t SEHttpRequest_data(
    const SEHttpRequest *const req,
    uint8_t *const buf
);

/**
  @return SE_SUCCESS
  @return SE_ERRNO
  @return SE_GAI
  @return SE_COULD_NOT_CONNECT_TO_HOST
  @return SE_COULD_NOT_FIND_ADDRESS
  @return SE_OUT_OF_MEMORY
*/
SEResult SEHttpRequest_send(const SEHttpRequest *const req, int *const gai_err);

/**
  @return SE_SUCCESS
  @return SE_ERRNO
  @return SE_GAI
  @return SE_COULD_NOT_CONNECT_TO_HOST
  @return SE_COULD_NOT_FIND_ADDRESS
  @return SE_OUT_OF_MEMORY
*/
SEResult se_http_request_send(
    const char *const host,
    const size_t host_len,
    const in_port_t port,
    const SEHttpMethod method,
    const char *const uri,
    const size_t uri_len,
    const char *const *const headers,
    const size_t headers_len,
    const uint8_t *const body,
    const size_t body_len,
    int *const gai_err
);

#endif // SCUFENG_HTTP_H_