/*
 * ================================
 * eli960@qq.com
 * http:/linuxmail.cn/
 * 2017年07月22日
 * ================================
 */

#include "zcc/zcc_http.h"
#include <cctype>

zcc_namespace_begin;

std::map<std::string, std::string> http_cookie_parse(const char *raw_cookie)
{
 std::map<std::string, std::string> r;
 const char *q, *p, *ps = raw_cookie;
 std::string name, value;

 while (1)
 {
 while (*ps)
 {
 if ((*ps == ' ') || (*ps == '\t'))
 {
 ps++;
 continue;
 }
 break;
 }
 p = ps;
 while ((*p != '0円') && (*p != ';'))
 {
 p++;
 }
 do
 {
 q = ps;
 while (q < p)
 {
 if (*q == '=')
 {
 break;
 }
 q++;
 }
 if (q == p)
 {
 break;
 }
 name.clear();
 name.append(ps, q - ps);
 value.clear();
 q++;
 http_token_decode(q, (int)(p - q), value);
 } while (0);
 r[name] = value;

 if (*p == '0円')
 {
 break;
 }
 ps = p + 1;
 }
 return r;
}

std::string http_cookie_build_item(const char *name, const char *value, int64_t expires, const char *path, const char *domain, bool secure, bool httponly)
{
 unsigned char dec2hex[18] = "0123456789ABCDEF";
 std::string r;
 int ch;
 const unsigned char *p;

 r.append(name).append("=");
 if (empty(value))
 {
 r.append("deleted; expires=Thu, 01-Jan-1970 00:00:01 GMT; Max-Age=0;");
 return r;
 }

 // value
 r.append(http_token_encode(value, true));

 if (expires > 0)
 {
 r.append("; expires=").append(rfc7231_time(expires));
 r.append("; Max-Age=").append(std::to_string(expires - second()));
 }

 if (!empty(path))
 {
 r.append("; path=");
 // path
 p = (const unsigned char *)path;
 while ((ch = *p++))
 {
 if (std::isalnum(ch) || (ch == '/'))
 {
 r.push_back((char)ch);
 }
 else
 {
 r.push_back('%');
 r.push_back(dec2hex[ch >> 4]);
 r.push_back(dec2hex[ch & 0X0F]);
 }
 }
 }

 if (!empty(domain))
 {
 r.append("; domain=");
 // domain
 r.append(http_token_encode(domain, true));
 }

 if (secure)
 {
 r.append("; secure");
 }

 if (httponly)
 {
 r.append("; httponly");
 }

 return r;
}

zcc_namespace_end;