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feat: add GitHub Copilot as a third provider #1

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22 changes: 15 additions & 7 deletions src/bin/code-router.ts
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ import {
logout,
runClaudeOAuth,
runOpenAIOAuth,
runCopilotOAuth,
verifySubscriptions,
type ProviderSelection,
} from '../commands.js';
Expand Down Expand Up @@ -106,7 +107,8 @@ function normalizeProviderSelection(value: string): ProviderSelection {
normalized === 'all' ||
normalized === 'claude' ||
normalized === 'openai' ||
normalized === 'openrouter'
normalized === 'openrouter' ||
normalized === 'copilot'
) {
return normalized;
}
Expand All @@ -123,10 +125,10 @@ Usage:
code-router serve start [router flags]
code-router serve stop [--port PORT]
code-router serve apis [--provider openai|claude|openrouter|all]
code-router verify [--provider claude|openai|all] [--json]
code-router models [--provider claude|openai|openrouter|all] [--json]
code-router auth <claude|openai|status>
code-router logout <claude|openai|all>
code-router verify [--provider claude|openai|copilot|all] [--json]
code-router models [--provider claude|openai|copilot|openrouter|all] [--json]
code-router auth <claude|openai|copilot|status>
code-router logout <claude|openai|copilot|all>
code-router status [--json]

Flags:
Expand Down Expand Up @@ -534,11 +536,17 @@ async function main(): Promise<void> {
console.log('ChatGPT authentication saved.');
return;
}
if (target === 'copilot' || target === 'github-copilot') {
const enterpriseUrl = getOption(parsed.commandArgs, 'enterprise-url');
await runCopilotOAuth(enterpriseUrl);
console.log('Copilot authentication saved.');
return;
}
throw new Error(`Unsupported auth target: ${target}`);
}
case 'logout': {
const target = (parsed.commandArgs[0] || 'all') as 'claude' | 'openai' | 'all';
if (target !== 'claude' && target !== 'openai' && target !== 'all') {
const target = (parsed.commandArgs[0] || 'all') as 'claude' | 'openai' | 'copilot' | 'all';
if (target !== 'claude' && target !== 'openai' && target !== 'copilot' && target !== 'all') {
throw new Error(`Unsupported logout target: ${target}`);
}
await logout(target);
Expand Down
104 changes: 99 additions & 5 deletions src/commands.ts
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -14,8 +14,16 @@ import {
loadOpenAIAuthState,
saveOpenAIAuthState,
} from './openai-token-manager.js';
import { runCopilotOAuthFlow } from './copilot-oauth.js';
import {
COPILOT_TOKEN_FILE,
loadCopilotAuthState,
saveCopilotAuthState,
getValidCopilotAccessToken,
maskToken,
} from './copilot-token-manager.js';

export type ProviderSelection = 'all' | 'claude' | 'openai' | 'openrouter';
export type ProviderSelection = 'all' | 'claude' | 'openai' | 'openrouter' | 'copilot';

type StatusSnapshot = {
routerRunning: boolean;
Expand All @@ -24,19 +32,22 @@ type StatusSnapshot = {
claudeExpiresInMinutes: number | null;
chatgptConfigured: boolean;
chatgptSource: string | null;
copilotConfigured: boolean;
};

type ModelsResult = {
claude?: string[];
openai?: string[];
openrouter?: string[];
errors: Partial<Record<'claude' | 'openai' | 'openrouter', string>>;
copilot?: string[];
errors: Partial<Record<'claude' | 'openai' | 'openrouter' | 'copilot', string>>;
};

type VerifyResult = {
claude?: string;
openai?: string;
errors: Partial<Record<'claude' | 'openai', string>>;
copilot?: string;
errors: Partial<Record<'claude' | 'openai' | 'copilot', string>>;
};

const OPENAI_MODELS_URL =
Expand Down Expand Up @@ -274,6 +285,37 @@ async function deleteIfExists(path: string): Promise<void> {
}
}

async function verifyCopilotSubscription(): Promise<string> {
const accessToken = await getValidCopilotAccessToken();
const response = await fetch('https://api.githubcopilot.com/chat/completions', {
method: 'POST',
headers: {
Authorization: `Bearer ${accessToken}`,
'Content-Type': 'application/json',
'User-Agent': 'code-router/0.0.0',
'Openai-Intent': 'conversation-edits',
'x-initiator': 'user',
},
body: JSON.stringify({
model: 'gpt-4o',
max_tokens: 32,
messages: [{ role: 'user', content: 'Reply with exactly: ok' }],
}),
});

if (!response.ok) {
throw new Error(await response.text());
}

const payload = (await response.json()) as {
model?: string;
choices?: Array<{ message?: { content?: string } }>;
};
const model = payload.model || 'unknown';
const text = payload.choices?.[0]?.message?.content?.trim() || '(empty response)';
return `${model} -> ${text}`;
}

export async function loadStatusSnapshot(): Promise<StatusSnapshot> {
const tokens = await loadTokens();
const chatGPTAuthState = await loadOpenAIAuthState();
Expand All @@ -286,6 +328,8 @@ export async function loadStatusSnapshot(): Promise<StatusSnapshot> {
? `${chatGPTAuthState.source} auth file`
: null;

const copilotAuthState = await loadCopilotAuthState();

return {
routerRunning: await isRouterRunning(),
claudeConfigured: Boolean(tokens),
Expand All @@ -294,6 +338,7 @@ export async function loadStatusSnapshot(): Promise<StatusSnapshot> {
tokens?.expires_at ? Math.floor((tokens.expires_at - Date.now()) / 1000 / 60) : null,
chatgptConfigured: chatGPTConfigured,
chatgptSource: chatGPTSource,
copilotConfigured: Boolean(copilotAuthState?.accessToken),
};
}

Expand All @@ -306,6 +351,7 @@ export function formatStatusText(status: StatusSnapshot): string {
` ChatGPT: ${status.chatgptConfigured ? 'configured' : 'not configured'}${
status.chatgptConfigured && status.chatgptSource ? ` (${status.chatgptSource})` : ''
}`,
` Copilot: ${status.copilotConfigured ? 'configured' : 'not configured'}`,
` Router: ${status.routerRunning ? 'running' : 'not running'}`,
];

Expand All @@ -316,6 +362,7 @@ export async function listModels(provider: ProviderSelection): Promise<ModelsRes
const results: ModelsResult = { errors: {} };
const wantsClaude = provider === 'all' || provider === 'claude' || provider === 'openrouter';
const wantsOpenAI = provider === 'all' || provider === 'openai' || provider === 'openrouter';
const wantsCopilot = provider === 'all' || provider === 'copilot';

const [claudeResult, openAIResult] = await Promise.allSettled([
wantsClaude ? fetchAnthropicModels() : Promise.resolve([]),
Expand All @@ -338,6 +385,20 @@ export async function listModels(provider: ProviderSelection): Promise<ModelsRes
}
}

if (wantsCopilot) {
results.copilot = [
'gpt-4o',
'gpt-4o-mini',
'gpt-4.1',
'gpt-4.1-mini',
'gpt-5',
'gpt-5-mini',
'claude-sonnet-4',
'claude-sonnet-4-6',
'o4-mini',
];
}

if (provider === 'all' || provider === 'openrouter') {
const openRouterModels = [
...(results.openai || []).map((model) => `openai/${model}`),
Expand Down Expand Up @@ -382,6 +443,10 @@ export function formatModelsText(provider: ProviderSelection, models: ModelsResu
pushSection('ChatGPT', models.openai, models.errors.openai);
}

if (provider === 'all' || provider === 'copilot') {
pushSection('Copilot', models.copilot, models.errors.copilot);
}

if (provider === 'all' || provider === 'openrouter') {
pushSection('OpenRouter', models.openrouter, models.errors.openrouter);
}
Expand All @@ -395,10 +460,12 @@ export async function verifySubscriptions(
const results: VerifyResult = { errors: {} };
const wantsClaude = provider === 'all' || provider === 'claude';
const wantsOpenAI = provider === 'all' || provider === 'openai';
const wantsCopilot = provider === 'all' || provider === 'copilot';

const [claudeResult, openAIResult] = await Promise.allSettled([
const [claudeResult, openAIResult, copilotResult] = await Promise.allSettled([
wantsClaude ? verifyAnthropicSubscription() : Promise.resolve(''),
wantsOpenAI ? verifyOpenAISubscription() : Promise.resolve(''),
wantsCopilot ? verifyCopilotSubscription() : Promise.resolve(''),
]);

if (wantsClaude) {
Expand All @@ -417,6 +484,14 @@ export async function verifySubscriptions(
}
}

if (wantsCopilot) {
if (copilotResult.status === 'fulfilled') {
results.copilot = copilotResult.value;
} else {
results.errors.copilot = formatError(copilotResult.reason);
}
}

return results;
}

Expand All @@ -438,6 +513,12 @@ export function formatVerifyText(
);
}

if (provider === 'all' || provider === 'copilot') {
lines.push(
results.copilot ? `Copilot: OK ${results.copilot}` : `Copilot: ERROR ${results.errors.copilot}`
);
}

return lines.join('\n');
}

Expand Down Expand Up @@ -479,12 +560,25 @@ export async function runOpenAIOAuth(): Promise<void> {
}
}

export async function logout(target: 'claude' | 'openai' | 'all'): Promise<void> {
export async function runCopilotOAuth(enterpriseUrl?: string): Promise<void> {
const result = await runCopilotOAuthFlow(enterpriseUrl);
await saveCopilotAuthState({
accessToken: result.accessToken,
enterpriseUrl: result.enterpriseUrl,
createdAt: new Date().toISOString(),
});
}

export async function logout(target: 'claude' | 'openai' | 'copilot' | 'all'): Promise<void> {
if (target === 'claude' || target === 'all') {
await deleteIfExists(TOKEN_FILE);
}

if (target === 'openai' || target === 'all') {
await deleteIfExists(CHATGPT_KEY_FILE);
}

if (target === 'copilot' || target === 'all') {
await deleteIfExists(COPILOT_TOKEN_FILE);
}
}
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