initial tool call stream

1 files changed, 43 insertions, 0 deletions

diff --git a/internal/message/content.go b/internal/message/content.go
index f52449f4a..beebe354e 100644
--- a/internal/message/content.go
+++ b/internal/message/content.go
@@ -233,6 +233,40 @@ func (m *Message) AppendReasoningContent(delta string) {
 	}
 }
 
+func (m *Message) FinishToolCall(toolCallID string) {
+	for i, part := range m.Parts {
+		if c, ok := part.(ToolCall); ok {
+			if c.ID == toolCallID {
+				m.Parts[i] = ToolCall{
+					ID:       c.ID,
+					Name:     c.Name,
+					Input:    c.Input,
+					Type:     c.Type,
+					Finished: true,
+				}
+				return
+			}
+		}
+	}
+}
+
+func (m *Message) AppendToolCallInput(toolCallID string, inputDelta string) {
+	for i, part := range m.Parts {
+		if c, ok := part.(ToolCall); ok {
+			if c.ID == toolCallID {
+				m.Parts[i] = ToolCall{
+					ID:       c.ID,
+					Name:     c.Name,
+					Input:    c.Input + inputDelta,
+					Type:     c.Type,
+					Finished: c.Finished,
+				}
+				return
+			}
+		}
+	}
+}
+
 func (m *Message) AddToolCall(tc ToolCall) {
 	for i, part := range m.Parts {
 		if c, ok := part.(ToolCall); ok {
@@ -246,6 +280,15 @@ func (m *Message) AddToolCall(tc ToolCall) {
 }
 
 func (m *Message) SetToolCalls(tc []ToolCall) {
+	// remove any existing tool call part it could have multiple
+	parts := make([]ContentPart, 0)
+	for _, part := range m.Parts {
+		if _, ok := part.(ToolCall); ok {
+			continue
+		}
+		parts = append(parts, part)
+	}
+	m.Parts = parts
 	for _, toolCall := range tc {
 		m.Parts = append(m.Parts, toolCall)
 	}