[aisdk] Pass correct CallID and args on computer use tool call (#578)

## Summary
TSIA

## How was it tested?
Unit test; running testpitot locally

## Community Contribution License

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project maintainers under the terms of the [Apache 2
License](https://www.apache.org/licenses/LICENSE-2.0).

By creating this pull request I represent that I have the right to
license the contributions to the project maintainers under the Apache 2
License as stated in the [Community Contribution
License](https://github.com/jetify-com/opensource/blob/main/CONTRIBUTING.md#community-contribution-license).

Author: ipince

aisdk/ai/provider/openai/internal/codec/decode.go

@@ -187,9 +187,11 @@ func decodeComputerCall(computerCall responses.ResponseComputerToolCall) (*api.T
 
 	// Create tool call block with provider metadata
 	return &api.ToolCallBlock{
-		ToolCallID:       computerCall.ID, // TODO: use computerCall.CallID instead
+		// The CallID is what's needed to respond to the tool call, not the "ID" field.
+		// https://platform.openai.com/docs/api-reference/responses/object#responses-object-output-computer_tool_call
+		ToolCallID:       computerCall.CallID,
 		ToolName:         ComputerUseToolID,
-		Args:             json.RawMessage(computerCall.RawJSON()), // TODO: pass the Action instead.
+		Args:             json.RawMessage(computerCall.Action.RawJSON()), // The Action is the only argument to the computer call.
 		ProviderMetadata: api.NewProviderMetadata(map[string]any{ProviderName: metadata}),
 	}, nil
 }

aisdk/ai/provider/openai/internal/codec/decode_test.go

@@ -640,22 +640,24 @@ func TestDecodeToolCalls(t *testing.T) {
 			},
 		},
 		{
-			name: "computer call",
+			name: "computer call with no safety checks field",
 			response: `{
 				"output": [
 					{
 						"type": "computer_call",
 						"id": "comp1",
-						"command": "ls -la",
-						"working_directory": "/tmp"
+						"call_id": "call_123",
+						"action": {
+							"type": "screenshot"
+						}
 					}
 				]
 			}`,
 			want: []api.ContentBlock{
 				&api.ToolCallBlock{
-					ToolCallID: "comp1",
+					ToolCallID: "call_123",
 					ToolName:   "openai.computer_use_preview",
-					Args:       json.RawMessage(`{"command":"ls -la","working_directory":"/tmp","id":"comp1","type":"computer_call"}`),
+					Args:       json.RawMessage(`{"type":"screenshot"}`),
 					ProviderMetadata: api.NewProviderMetadata(map[string]any{
 						"openai": &Metadata{
 							ComputerSafetyChecks: []ComputerSafetyCheck{},
@@ -670,9 +672,10 @@ func TestDecodeToolCalls(t *testing.T) {
 				"output": [
 					{
 						"type": "computer_call",
-						"id": "comp2",
-						"command": "rm -rf /",
-						"working_directory": "/",
+						"call_id": "call_123",
+						"action": {
+							"type": "screenshot"
+						},
 						"pending_safety_checks": [
 							{
 								"id": "check1",
@@ -690,9 +693,9 @@ func TestDecodeToolCalls(t *testing.T) {
 			}`,
 			want: []api.ContentBlock{
 				&api.ToolCallBlock{
-					ToolCallID: "comp2",
+					ToolCallID: "call_123",
 					ToolName:   "openai.computer_use_preview",
-					Args:       json.RawMessage(`{"command":"rm -rf /","working_directory":"/","id":"comp2","type":"computer_call","pending_safety_checks":[{"id":"check1","code":"file_access","message":"File access requested"},{"id":"check2","code":"dangerous_command","message":"Potentially dangerous command detected"}]}`),
+					Args:       json.RawMessage(`{"type":"screenshot"}`),
 					ProviderMetadata: api.NewProviderMetadata(map[string]any{
 						"openai": &Metadata{
 							ComputerSafetyChecks: []ComputerSafetyCheck{
@@ -718,18 +721,19 @@ func TestDecodeToolCalls(t *testing.T) {
 				"output": [
 					{
 						"type": "computer_call",
-						"id": "comp3",
-						"command": "echo hello",
-						"working_directory": "/tmp",
+						"call_id": "call_123",
+						"action": {
+							"type": "screenshot"
+						},
 						"pending_safety_checks": []
 					}
 				]
 			}`,
 			want: []api.ContentBlock{
 				&api.ToolCallBlock{
-					ToolCallID: "comp3",
+					ToolCallID: "call_123",
 					ToolName:   "openai.computer_use_preview",
-					Args:       json.RawMessage(`{"command":"echo hello","working_directory":"/tmp","id":"comp3","type":"computer_call","pending_safety_checks":[]}`),
+					Args:       json.RawMessage(`{"type":"screenshot"}`),
 					ProviderMetadata: api.NewProviderMetadata(map[string]any{
 						"openai": &Metadata{
 							ComputerSafetyChecks: []ComputerSafetyCheck{},