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fix: update model aliases and enhance event parsing for Copilot provider #220

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fix: update model aliases and enhance event parsing for Copilot provider #220

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5 changes: 5 additions & 0 deletions src/models.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -130,6 +130,11 @@ const BUILTIN_ALIASES: Record<string, string> = {
'anthropic--claude-4.5-opus': 'claude-opus-4-5',
'anthropic--claude-4.5-sonnet': 'claude-sonnet-4-5',
'anthropic--claude-4.5-haiku': 'claude-haiku-4-5',
'claude-sonnet-4.6': 'claude-sonnet-4-6',
'claude-sonnet-4.5': 'claude-sonnet-4-5',
'claude-opus-4.7': 'claude-opus-4-7',
'claude-opus-4.6': 'claude-opus-4-6',
'claude-opus-4.5': 'claude-opus-4-5',
'cursor-auto': 'claude-sonnet-4-5',
'cursor-agent-auto': 'claude-sonnet-4-5',
'copilot-auto': 'claude-sonnet-4-5',
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18 changes: 16 additions & 2 deletions src/providers/copilot.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,7 @@ type LegacyCopilotEvent =
| { type: 'session.model_change'; timestamp?: string; data: { newModel: string } }
| { type: 'user.message'; timestamp?: string; data: { content: string; interactionId?: string } }
| { type: 'assistant.message'; timestamp?: string; data: { messageId: string; outputTokens: number; interactionId?: string; toolRequests?: LegacyToolRequest[] } }
| { type: string; timestamp?: string; data: Record<string, unknown> }

function parseLegacyEvents(content: string, sessionId: string, seenKeys: Set<string>): ParsedProviderCall[] {
const results: ParsedProviderCall[] = []
Expand All @@ -85,8 +86,14 @@ function parseLegacyEvents(content: string, sessionId: string, seenKeys: Set<str
continue
}

// Some newer events include the model ID explicitly.
const data = event.data as { newModel?: string; model?: string }
if (typeof data.model === 'string' && data.model) {
currentModel = data.model
}

if (event.type === 'session.model_change') {
currentModel = event.data.newModel ?? currentModel
currentModel = data.newModel ?? currentModel
continue
}

Expand Down Expand Up @@ -158,6 +165,7 @@ const transcriptToolCallModelHints: Array<{ prefix: string; model: string }> = [
{ prefix: 'toolu_bdrk_', model: COPILOT_ANTHROPIC_AUTO },
{ prefix: 'toolu_vrtx_', model: COPILOT_ANTHROPIC_AUTO },
{ prefix: 'tooluse_', model: COPILOT_ANTHROPIC_AUTO },
{ prefix: 'toolu_', model: COPILOT_ANTHROPIC_AUTO },
// OpenAI tool-call IDs.
{ prefix: 'call_', model: COPILOT_OPENAI_AUTO },
]
Expand All @@ -166,6 +174,12 @@ function inferModelFromToolCallIds(events: TranscriptEvent[]): string {
const modelCounts = new Map<string, number>()

for (const e of events) {
// Some newer events (like tool.execution_complete) explicitly include the model ID.
const data = e.data as { model?: string }
if (typeof data.model === 'string' && data.model) {
modelCounts.set(data.model, (modelCounts.get(data.model) ?? 0) + 100)
}

if (e.type !== 'assistant.message') continue
const msg = e as { data: { toolRequests?: TranscriptToolRequest[] } }
for (const t of msg.data.toolRequests ?? []) {
Expand All @@ -182,7 +196,7 @@ function inferModelFromToolCallIds(events: TranscriptEvent[]): string {
return [...modelCounts.entries()].sort((a, b) => b[1] - a[1])[0]![0]
}

return 'copilot-auto'
return COPILOT_OPENAI_AUTO
}

function parseTranscriptEvents(content: string, sessionId: string, seenKeys: Set<string>): ParsedProviderCall[] {
Expand Down
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