collarbone-annihilation/iu9-ca-web-chat
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api/geetMessageNeighbours

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Андреев Григорий 2024-08-26 00:13:56 +03:00
parent 2ad4f5b52d
commit 45a1662eae
8 changed files with 83 additions and 13 deletions
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1
building/main.cpp
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@ -159,6 +159,7 @@ struct CAWebChat {
"backend_logic/when_api_getchatmemberlist.cpp",
"backend_logic/when_api_getuserinfo.cpp",
"backend_logic/when_api_getmessageinfo.cpp",
"backend_logic/when_api_getmessageneighbours.cpp",
};
for (std::string& u: T.units)
u = "web_chat/iu9_ca_web_chat_lib/" + u;

2
src/http_server/engine_engine_number_9/http_structures/client_request_parse.cpp
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@ -111,7 +111,7 @@ namespace een9 {
status = -1;
return status;
}
res.body.reserve(body_size);
res.body.reserve(std::min(100000ul, body_size));
}
}
if (!res.has_body) {

13
src/http_server/engine_engine_number_9/http_structures/cookies.cpp
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@ -43,7 +43,7 @@ namespace een9 {
pos++;
return hv.substr(S, pos - S);
};
auto read_to_space_or_dq_or_semc = [&]() -> std::string {
auto read_to_space_or_semc = [&]() -> std::string {
size_t S = pos;
while (hv.size() > pos && !isSPACE(hv[pos]) && hv[pos] != '"' && hv[pos] != ';')
pos++;
@ -68,16 +68,7 @@ namespace een9 {
THROW("Incorrect Cookie header line, missing =");
pos++;
skip_ows();
std::string value_of_pechenye;
if (isThis('"')) {
pos++;
value_of_pechenye = read_to_space_or_dq_or_semc();
if (!isThis('"'))
THROW("Incorrect Cookie header line, missing \"");
pos++;
} else {
value_of_pechenye = read_to_space_or_dq_or_semc();
}
std::string value_of_pechenye = read_to_space_or_semc();
// ASSERT(isCookieValue(value_of_pechenye), "Incorrect Cookie value");
result.emplace_back(name_of_pechenye, value_of_pechenye);
skip_ows();

20
src/web_chat/iu9_ca_web_chat_lib/backend_logic/server_data_interact.cpp
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@ -80,12 +80,32 @@ namespace iu9cawebchat {
int status = sqlite_stmt_step(req, {{0, &previousId}, {1, &senderUserId}, {2, &exists}, {3, &isSystem}},
{{4, &msg_text}});
if (status == SQLITE_ROW) {
if (!(bool)exists.value)
een9_THROW("Message existed, but now it isn't");
return {(bool)isSystem.value, msg_text.value, senderUserId.exist ? senderUserId.value : -1,
previousId.exist ? previousId.value : -1};
}
een9_THROW("No such message");
}
std::pair<int64_t, RowMessage_Content> lookup_message_content_rev_side(SqliteConnection& conn, int64_t chatId, int64_t prevMsgId) {
een9_ASSERT(prevMsgId >= 0, "V durku dobro pozhalovat");
SqliteStatement req(conn,
"SELECT `id`, `senderUserId`, `exists`, `isSystem`, `text` FROM `message` WHERE "
"`chatId` = ?1 AND `previous` = ?2", {{1, chatId}, {2, prevMsgId}}, {});
fsql_integer_or_null id, senderUserId, exists, isSystem;
fsql_text8_or_null msg_text;
int status = sqlite_stmt_step(req, {{0, &id}, {1, &senderUserId}, {2, &exists}, {3, &isSystem}},
{{4, &msg_text}});
if (status == SQLITE_ROW) {
een9_ASSERT_pl(exists.value == 1);
return {id.value,
{(bool)isSystem.value, msg_text.value, senderUserId.exist ? senderUserId.value : -1, prevMsgId}};
}
return {-1, {}};
}
int64_t get_role_of_user_in_chat(SqliteConnection& conn, int64_t userId, int64_t chatId) {
SqliteStatement req(conn,
"SELECT `role` FROM `user_chat_membership` WHERE `userId` = ?1 AND `chatId` = ?2",

4
src/web_chat/iu9_ca_web_chat_lib/backend_logic/server_data_interact.h
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@ -41,6 +41,9 @@ namespace iu9cawebchat {
RowMessage_Content lookup_message_content(SqliteConnection& conn, int64_t chatId, int64_t msgId);
/* If prevMsgId is id of the last message in chat, and there is no message ahead of it, .first = -1 */
std::pair<int64_t, RowMessage_Content> lookup_message_content_rev_side(SqliteConnection& conn, int64_t chatId, int64_t prevMsgId);
int64_t get_role_of_user_in_chat(SqliteConnection& conn, int64_t userId, int64_t chatId);
/* ============================= API ====================================*/
@ -50,6 +53,7 @@ namespace iu9cawebchat {
json::JSON internalapi_getChatMemberList(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
json::JSON internalapi_getUserInfo(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
json::JSON internalapi_getMessageInfo(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
json::JSON internalapi_getMessageNeighbours(SqliteConnection& conn, int64_t uid, const json::JSON& Sent);
// todo: complete the list
}

1
src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getmessageinfo.cpp
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@ -2,7 +2,6 @@
#include <engine_engine_number_9/baza_throw.h>
namespace iu9cawebchat {
/* This is literally the most dumb and useless query */
json::JSON internalapi_getMessageInfo(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
int64_t chatId = Sent["chatId"].g().asInteger().get_int();
int64_t msgId = Sent["id"].g().asInteger().get_int();

52
src/web_chat/iu9_ca_web_chat_lib/backend_logic/when_api_getmessageneighbours.cpp Normal file
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@ -0,0 +1,52 @@
#include "server_data_interact.h"
#include <engine_engine_number_9/baza_throw.h>
namespace iu9cawebchat {
/* This is literally the most dumb and useless query */
json::JSON internalapi_getMessageNeighbours(SqliteConnection& conn, int64_t uid, const json::JSON& Sent) {
int64_t chatId = Sent["chatId"].g().asInteger().get_int();
if (get_role_of_user_in_chat(conn, uid, chatId) == user_chat_role_deleted)
een9_THROW("Authentication failure");
bool dir_forward = Sent["direction"].g().asString() == "forward";
int64_t amount = Sent["amount"].g().asInteger().get_int();
if (amount < 0)
een9_THROW("Incorrect amount");
json::JSON Recv;
Recv["status"] = json::JSON(0l);
Recv["messages"] = json::JSON(json::array);
std::vector<json::JSON>& messages = Recv["messages"].g().asArray();
if (dir_forward) {
int64_t curMsg = Sent["id"].g().asInteger().get_int();
if (curMsg < 0)
een9_THROW("forward message lookup from the beginning of chat is not supported yet");
while (true) {
/* At this point, curMsg is non-negative */
std::pair<int64_t, RowMessage_Content> nxt = lookup_message_content_rev_side(conn, chatId, curMsg);
if (nxt.first < 0)
break;
messages.emplace_back();
json::JSON& message = messages.back();
message["id"] = json::JSON(nxt.first);
message["previous"] = json::JSON(curMsg);
message["content"]["text"] = json::JSON(nxt.second.text);
message["content"]["isSystem"] = json::JSON(nxt.second.isSystem);
message["content"]["sender"] = json::JSON(nxt.second.senderUserId);
curMsg = nxt.first;
}
} else {
int64_t curMsg = Sent["previousMsgId"].g().asInteger().get_int();
while (curMsg >= 0) {
RowMessage_Content curRow = lookup_message_content(conn, chatId, curMsg);
messages.emplace_back();
json::JSON& message = messages.back();
message["id"] = json::JSON(curMsg);
message["previous"] = json::JSON(curRow.previous);
message["content"]["text"] = json::JSON(curRow.text);
message["content"]["isSystem"] = json::JSON(curRow.isSystem);
message["content"]["sender"] = json::JSON(curRow.senderUserId);
curMsg = curRow.previous;
}
}
return Recv;
}
}

3
src/web_chat/iu9_ca_web_chat_lib/run.cpp
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@ -96,6 +96,9 @@ namespace iu9cawebchat {
if (req.uri_path == "/internalapi/getMessageInfo") {
return when_internalapi_getmessageinfo(wgd, req, logged_in_user);
}
// if (req.uri_path == "/internalapi/getMessageNeighbours") {
// return when
// }
// todo: write all the other interfaces
} catch (const std::exception& e) {
guard_.rollback = true;