From 0e4a45eff4dd8ab29f8dd79e419d33a89a808939 Mon Sep 17 00:00:00 2001
From: George Hazan <ghazan@miranda.im>
Date: Thu, 23 Mar 2023 21:52:25 +0300
Subject: group chats unserialization

---
 src/mir_app/src/chat.h           |  2 ++
 src/mir_app/src/chat_manager.cpp |  2 +-
 src/mir_app/src/chat_svc.cpp     | 12 +++++++--
 src/mir_app/src/chat_tools.cpp   | 55 +++++++++++++++++++++++++++++++++++++++-
 4 files changed, 67 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/mir_app/src/chat.h b/src/mir_app/src/chat.h
index c41c5344a8..04fa195b9c 100644
--- a/src/mir_app/src/chat.h
+++ b/src/mir_app/src/chat.h
@@ -84,6 +84,7 @@ SESSION_INFO* SM_FindSessionByIndex(const char *pszModule, int iItem);
 STATUSINFO*   TM_AddStatus(STATUSINFO **ppStatusList, const wchar_t *pszStatus, int *iCount);
 uint16_t      TM_StringToWord(STATUSINFO *pStatusList, const wchar_t *pszStatus);
 
+USERINFO*     UM_AddUser(SESSION_INFO *si, const wchar_t *pszUID, const wchar_t *pszNick, uint16_t wStatus);
 USERINFO*     UM_FindUserFromIndex(SESSION_INFO *si, int index);
 BOOL          UM_RemoveAll(SESSION_INFO *si);
 BOOL          UM_SetStatusEx(SESSION_INFO *si, const wchar_t* pszText, int flags);
@@ -132,5 +133,6 @@ void          Chat_RemoveContact(MCONTACT hContact);
 
 CMStringW     Chat_GetFolderName(SESSION_INFO *si = nullptr);
 void          Chat_Serialize(SESSION_INFO *si);
+bool          Chat_Unserialize(SESSION_INFO *si);
 
 #pragma comment(lib,"comctl32.lib")
diff --git a/src/mir_app/src/chat_manager.cpp b/src/mir_app/src/chat_manager.cpp
index a448c77be0..23984f3601 100644
--- a/src/mir_app/src/chat_manager.cpp
+++ b/src/mir_app/src/chat_manager.cpp
@@ -570,7 +570,7 @@ STATUSINFO* TM_AddStatus(STATUSINFO **ppStatusList, const wchar_t *pszStatus, in
 		return node;
 
 	}
-	return FALSE;
+	return nullptr;
 }
 
 static STATUSINFO* TM_FindStatus(STATUSINFO *pStatusList, const wchar_t *pszStatus)
diff --git a/src/mir_app/src/chat_svc.cpp b/src/mir_app/src/chat_svc.cpp
index 9fd2d559ba..64132cdde5 100644
--- a/src/mir_app/src/chat_svc.cpp
+++ b/src/mir_app/src/chat_svc.cpp
@@ -255,10 +255,18 @@ MIR_APP_DLL(SESSION_INFO*) Chat_NewSession(
 		mir_snwprintf(szTemp, L"Server: %s", si->ptszName);
 	else
 		wcsncpy_s(szTemp, si->ptszName, _TRUNCATE);
+
 	si->hContact = AddRoom(pszModule, ptszID, szTemp, si->iType);
 	si->iPopupFlags = Chat::iPopupFlags;
 	si->iTrayFlags = Chat::iTrayIconFlags;
-	db_set_s(si->hContact, si->pszModule, "Topic", "");
+
+	bool bRestored = false;
+	if (mi->bPersistent)
+		bRestored = Chat_Unserialize(si);
+
+	if (!bRestored)
+		db_set_s(si->hContact, si->pszModule, "Topic", "");
+
 	db_unset(si->hContact, "CList", "StatusMsg");
 	if (si->ptszStatusbarText)
 		db_set_ws(si->hContact, si->pszModule, "StatusBar", si->ptszStatusbarText);
@@ -423,7 +431,7 @@ static void AddUser(SESSION_INFO *si, GCEVENT &gce)
 {
 	uint16_t status = TM_StringToWord(si->pStatuses, gce.pszStatus.w);
 
-	USERINFO *ui = g_chatApi.UM_AddUser(si, gce.pszUID.w, gce.pszNick.w, status);
+	USERINFO *ui = UM_AddUser(si, gce.pszUID.w, gce.pszNick.w, status);
 	if (ui == nullptr)
 		return;
 
diff --git a/src/mir_app/src/chat_tools.cpp b/src/mir_app/src/chat_tools.cpp
index 744797f205..ee13b56e43 100644
--- a/src/mir_app/src/chat_tools.cpp
+++ b/src/mir_app/src/chat_tools.cpp
@@ -867,7 +867,8 @@ void Chat_Serialize(SESSION_INFO *si)
 	JSONNode pUserList(JSON_ARRAY); pUserList.set_name("users");
 	for (auto &it : si->arUsers) {
 		JSONNode user;
-		user << JSONNode("id", T2Utf(it->pszUID).get()) << JSONNode("nick", T2Utf(it->pszNick).get()) << JSONNode("role", it->Status);
+		user << JSONNode("id", T2Utf(it->pszUID).get()) << JSONNode("nick", T2Utf(it->pszNick).get())
+			<< JSONNode("role", it->Status) << JSONNode("isMe", it == si->pMe);
 		pUserList << user;
 	}
 
@@ -886,3 +887,55 @@ void Chat_Serialize(SESSION_INFO *si)
 		}
 	}
 }
+
+bool Chat_Unserialize(SESSION_INFO *si)
+{
+	FILE *in = _wfopen(Chat_GetFolderName(si), L"r");
+	if (in == nullptr)
+		return false;
+
+	CMStringA szJson;
+	unsigned iFileLength = filelength(fileno(in));
+	szJson.Truncate(iFileLength);
+	fread(szJson.GetBuffer(), 1, iFileLength, in);
+	fclose(in);
+
+	JSONNode root = JSONNode::parse(szJson);
+	if (!root)
+		return false;
+
+	CMStringW str = root["name"].as_mstring();
+	if (!str.IsEmpty())
+		si->ptszName = str.Detach();
+
+	str = root["topic"].as_mstring();
+	if (!str.IsEmpty())
+		si->ptszTopic = str.Detach();
+
+	for (auto &it : root["roles"])
+		if (auto *pStatus = TM_AddStatus(&si->pStatuses, it["name"].as_mstring(), &si->iStatusCount))
+			si->iStatusCount++;
+
+	for (auto &it : root["users"]) {
+		int iStatus = it["role"].as_int();
+		USERINFO *ui = UM_AddUser(si, it["id"].as_mstring(), it["nick"].as_mstring(), iStatus);
+		if (ui == nullptr)
+			continue;
+
+		if (g_chatApi.OnAddUser)
+			g_chatApi.OnAddUser(si, ui);
+
+		if (it["isMe"].as_bool())
+			si->pMe = ui;
+		ui->Status = iStatus;
+		ui->Status |= si->pStatuses->iStatus;
+
+		if (g_chatApi.OnNewUser)
+			g_chatApi.OnNewUser(si, ui);
+	}
+
+	if (si->pDlg)
+		si->pDlg->UpdateNickList();
+
+	return true;
+}
-- 
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