feat: add opencode support

server/modules/providers/list/opencode/opencode-auth.provider.ts

@@ -0,0 +1,111 @@
+import { readFile } from 'node:fs/promises';
+import os from 'node:os';
+import path from 'node:path';
+
+import spawn from 'cross-spawn';
+
+import type { IProviderAuth } from '@/shared/interfaces.js';
+import type { ProviderAuthStatus } from '@/shared/types.js';
+import { readObjectRecord, readOptionalString } from '@/shared/utils.js';
+
+type OpenCodeCredentialsStatus = {
+  authenticated: boolean;
+  email: string | null;
+  method: string | null;
+  error?: string;
+};
+
+const OPENCODE_ENV_CREDENTIAL_KEYS = [
+  'ANTHROPIC_API_KEY',
+  'OPENAI_API_KEY',
+  'GOOGLE_GENERATIVE_AI_API_KEY',
+  'GEMINI_API_KEY',
+  'GROQ_API_KEY',
+  'OPENROUTER_API_KEY',
+];
+
+export class OpenCodeProviderAuth implements IProviderAuth {
+  /**
+   * Checks whether the OpenCode CLI is available to the server process.
+   */
+  private checkInstalled(): boolean {
+    try {
+      const result = spawn.sync('opencode', ['--version'], { stdio: 'ignore', timeout: 5000 });
+      return !result.error && result.status === 0;
+    } catch {
+      return false;
+    }
+  }
+
+  /**
+   * Returns OpenCode CLI installation and credential status.
+   */
+  async getStatus(): Promise<ProviderAuthStatus> {
+    const installed = this.checkInstalled();
+    const credentials = await this.checkCredentials();
+
+    return {
+      installed,
+      provider: 'opencode',
+      authenticated: credentials.authenticated,
+      email: credentials.email,
+      method: credentials.method,
+      error: credentials.authenticated ? undefined : credentials.error || 'Not authenticated',
+    };
+  }
+
+  /**
+   * Reads OpenCode's auth store or falls back to provider API key environment variables.
+   */
+  private async checkCredentials(): Promise<OpenCodeCredentialsStatus> {
+    try {
+      const authPath = path.join(os.homedir(), '.local', 'share', 'opencode', 'auth.json');
+      const content = await readFile(authPath, 'utf8');
+      const auth = readObjectRecord(JSON.parse(content)) ?? {};
+
+      for (const [providerId, providerAuth] of Object.entries(auth)) {
+        const providerRecord = readObjectRecord(providerAuth);
+        if (!providerRecord) {
+          continue;
+        }
+
+        const hasCredential = Object.values(providerRecord).some(
+          (value) => readOptionalString(value) !== undefined || Boolean(readObjectRecord(value)),
+        );
+        if (hasCredential) {
+          return {
+            authenticated: true,
+            email: `${providerId} credentials`,
+            method: 'credentials_file',
+          };
+        }
+      }
+    } catch (error) {
+      const code = (error as NodeJS.ErrnoException).code;
+      if (code !== 'ENOENT') {
+        return {
+          authenticated: false,
+          email: null,
+          method: null,
+          error: error instanceof Error ? error.message : 'Failed to read OpenCode auth',
+        };
+      }
+    }
+
+    const envCredential = OPENCODE_ENV_CREDENTIAL_KEYS.find((key) => process.env[key]?.trim());
+    if (envCredential) {
+      return {
+        authenticated: true,
+        email: envCredential,
+        method: 'environment',
+      };
+    }
+
+    return {
+      authenticated: false,
+      email: null,
+      method: null,
+      error: 'OpenCode not configured',
+    };
+  }
+}