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#include "Response.hpp"
Response::json Response::simple_response(std::string const &text, std::string const &session, bool success) {
std::vector<json> reply_vec;
reply_vec.emplace_back(create_text(text));
return create_response(std::move(reply_vec), session, success);
}
Response::json Response::create_annotation(Reply::AnnotationType annotationType, std::string const &extra) {
json annotation(crow::json::type::Object);
annotation["type"] = Reply::GetStringAnnotationType(annotationType);
if (extra.empty()) {
annotation["extra"] = json(crow::json::type::List);
} else {
annotation["extra"] = create_text(extra);
}
return annotation;
}
Response::json Response::create_annotation(Reply::AnnotationType annotationType, std::vector<json> &&extra) {
json annotation(crow::json::type::Object);
annotation["type"] = Reply::GetStringAnnotationType(annotationType);
annotation["extra"] = std::move(extra);
return annotation;
}
Response::json Response::create_text(std::string const &text) {
std::vector<json> annotations;
annotations.emplace_back(create_annotation());
return create_text(text, std::move(annotations));
}
Response::json Response::create_text(std::string const &text, std::vector<json> &&annotations) {
json reply(crow::json::type::Object);
reply["text"] = text;
reply["annotations"] = std::move(annotations);
return reply;
}
Response::json Response::create_response(std::vector<json> &&reply, std::string const &session, bool success) {
json response(crow::json::type::Object);
response["success"] = success;
response["session"] = session;
response["reply"] = std::move(reply);
return response;
}
static std::string const base64_chars =
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/";
std::string base64_encode(unsigned char const *input, unsigned int const len) {
std::string ret;
size_t i = 0;
unsigned char bytes[3];
unsigned char sextets[4];
while (i <= (len - 3)) {
bytes[0] = *(input++);
bytes[1] = *(input++);
bytes[2] = *(input++);
sextets[0] = (bytes[0] & 0xfc) >> 2; // Cuts last two bits off of first byte
sextets[1] = ((bytes[0] & 0x03) << 4) + ((bytes[1] & 0xf0)
>> 4); // Takes last two bits from first byte and adds it to first 4 bits of 2nd byte
sextets[2] = ((bytes[1] & 0x0f) << 2) + ((bytes[2] & 0xc0)
>> 6); // Takes last 4 bits of 2nd byte and adds it to first 2 bits of third byte
sextets[3] = bytes[2] & 0x3f; // takes last 6 bits of third byte
for (size_t j = 0; j < 4; ++j) {
ret += base64_chars[sextets[j]];
}
i += 3; // increases to go to third byte
}
if (i != len) {
size_t k = 0;
size_t j = len - i; // Find index of last byte
while (k < j) { // Sets first bytes
bytes[k] = *(input++);
++k;
}
while (j < 3) { // Set last bytes to 0x00
bytes[j] = '\0';
++j;
}
sextets[0] = (bytes[0] & 0xfc) >> 2; // Cuts last two bits off of first byte
sextets[1] = ((bytes[0] & 0x03) << 4) + ((bytes[1] & 0xf0)
>> 4); // Takes last two bits from first byte and adds it to first 4 bits of 2nd byte
sextets[2] = ((bytes[1] & 0x0f) << 2) + ((bytes[2] & 0xc0)
>> 6); // Takes last 4 bits of 2nd byte and adds it to first 2 bits of third byte
// No last one is needed, because if there were 4, then (i == len) == true
for (j = 0; j < (len - i) + 1; ++j) { // Gets sextets that include data
ret += base64_chars[sextets[j]]; // Appends them to string
}
while ((j++) < 4) // Appends remaining ='s
ret += '=';
}
return ret;
}
std::string base64_encode_file(std::string const &path) {
std::vector<char> temp;
std::ifstream infile;
infile.open(path, std::ios::binary); // Open file in binary mode
if (infile.is_open()) {
while (!infile.eof()) {
char c = (char) infile.get();
temp.push_back(c);
}
infile.close();
} else return "File could not be opened";
std::string ret(temp.begin(), temp.end() - 1);
ret = base64_encode((unsigned const char *) ret.c_str(), ret.size());
return ret;
}
Response::json Response::create_attachment(std::string const &file_path) {
std::string name = file_path;
if (auto pos = file_path.find_last_of('/'); pos != std::string::npos) {
name = file_path.substr(pos + 1);
}
return create_attachment(file_path, name);
}
Response::json Response::create_attachment(std::string const &file_path, std::string const &file_name) {
std::string type = "unknown";
if (auto pos = file_name.find_last_of('.'); pos != std::string::npos) {
type = file_name.substr(pos + 1);
}
return create_attachment(file_path, file_name, type);
}
Response::json
Response::create_attachment(std::string const &file_path, std::string const &file_name, std::string const &file_type) {
json attachment(crow::json::type::Object);
attachment["type"] = file_type;
attachment["name"] = file_name;
attachment["content"] = base64_encode_file(file_path);
return attachment;
}
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