feat: add support acp in common chat (#369)

sources/ChatView/ConversationCoordinator.hpp

@@ -0,0 +1,100 @@
+// Copyright (C) 2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Additional attribution terms under GPLv3 §7(b) apply — see LICENSE
+
+#pragma once
+
+#include <optional>
+
+#include <QObject>
+#include <QString>
+#include <QStringList>
+
+#include "ConversationPorts.hpp"
+
+namespace QodeAssist::Chat {
+
+class ConversationCoordinator : public QObject
+{
+    Q_OBJECT
+
+public:
+    struct Ports
+    {
+        IConversationPort *ops = nullptr;
+        IAgentCatalogPort *catalog = nullptr;
+        ICompressionPort *compression = nullptr;
+        ISendPort *send = nullptr;
+    };
+
+    explicit ConversationCoordinator(const Ports &ports, QObject *parent = nullptr);
+
+    void requestSend(const QString &message, const QStringList &attachments);
+    bool refuseWhileReadOnly();
+    bool hasDeferredSend() const;
+
+    void chooseAgent(const Acp::AgentDefinition &agent);
+    void chooseLlm();
+    void confirmSwitch();
+    void cancelSwitch();
+    bool switchPending() const;
+
+    void restoreAgentBinding(const Acp::AgentBinding &binding);
+    Acp::AgentBinding bindingForSave() const;
+
+    QString sessionIssue() const;
+    bool readOnly() const;
+    bool canStartFreshSession() const;
+
+    bool canHandOverSummary() const;
+    QString summaryHandoverTooltip() const;
+    void startFreshSession();
+    void handOverSummary();
+
+    void shrinkContext();
+    bool canShrinkContext() const;
+    QString shrinkContextTooltip() const;
+
+    QString agentTitle() const;
+
+    void conversationReset();
+
+public slots:
+    void titleSuggested(const QString &title);
+    void agentSessionUnavailable(const QString &reason);
+    void summaryProduced(const QString &summary);
+    void compressionSettled();
+
+signals:
+    void sessionIssueChanged();
+    void agentTitleChanged();
+    void boundToAgent(const QodeAssist::Acp::AgentDefinition &agent);
+    void boundToLlm();
+    void switchConfirmationNeeded(const QString &targetName);
+    void switchCancelled();
+    void errorSurfaced(const QString &message);
+
+private:
+    struct DeferredSend
+    {
+        QString message;
+        QStringList attachments;
+        bool active = false;
+    };
+
+    void setSessionIssue(const QString &issue, bool recoverable);
+    bool deferSendForAutoCompress(const QString &message, const QStringList &attachments);
+    void bindAgentNow(const Acp::AgentDefinition &agent);
+    void bindLlmNow();
+
+    Ports m_ports;
+    std::optional<Acp::AgentDefinition> m_pendingAgent;
+    bool m_pendingLlmSwitch = false;
+    DeferredSend m_deferredSend;
+    QString m_agentTitle;
+    QString m_sessionIssue;
+    bool m_sessionRecoverable = false;
+    Acp::AgentBinding m_quarantinedBinding;
+};
+
+} // namespace QodeAssist::Chat