Add OCO_API_CUSTOM_HEADERS

README.md

@@ -109,6 +109,7 @@ Create a `.env` file and add OpenCommit config variables there like this:
 OCO_AI_PROVIDER=<openai (default), anthropic, azure, ollama, gemini, flowise, deepseek>
 OCO_API_KEY=<your OpenAI API token> // or other LLM provider API token
 OCO_API_URL=<may be used to set proxy path to OpenAI api>
+OCO_API_CUSTOM_HEADERS=<JSON string of custom HTTP headers to include in API requests>
 OCO_TOKENS_MAX_INPUT=<max model token limit (default: 4096)>
 OCO_TOKENS_MAX_OUTPUT=<max response tokens (default: 500)>
 OCO_DESCRIPTION=<postface a message with ~3 sentences description of the changes>

src/commands/config.ts

@@ -25,6 +25,7 @@ export enum CONFIG_KEYS {
   OCO_ONE_LINE_COMMIT = 'OCO_ONE_LINE_COMMIT',
   OCO_TEST_MOCK_TYPE = 'OCO_TEST_MOCK_TYPE',
   OCO_API_URL = 'OCO_API_URL',
+  OCO_API_CUSTOM_HEADERS = 'OCO_API_CUSTOM_HEADERS',
   OCO_OMIT_SCOPE = 'OCO_OMIT_SCOPE',
   OCO_GITPUSH = 'OCO_GITPUSH' // todo: deprecate
 }
@@ -204,6 +205,22 @@ export const configValidators = {
     return value;
   },
 
+  [CONFIG_KEYS.OCO_API_CUSTOM_HEADERS](value) {
+    try {
+      // Custom headers must be a valid JSON string
+      if (typeof value === 'string') {
+        JSON.parse(value);
+      }
+      return value;
+    } catch (error) {
+      validateConfig(
+        CONFIG_KEYS.OCO_API_CUSTOM_HEADERS,
+        false,
+        'Must be a valid JSON string of headers'
+      );
+    }
+  },
+
   [CONFIG_KEYS.OCO_TOKENS_MAX_INPUT](value: any) {
     value = parseInt(value);
     validateConfig(
@@ -380,6 +397,7 @@ export type ConfigType = {
   [CONFIG_KEYS.OCO_TOKENS_MAX_INPUT]: number;
   [CONFIG_KEYS.OCO_TOKENS_MAX_OUTPUT]: number;
   [CONFIG_KEYS.OCO_API_URL]?: string;
+  [CONFIG_KEYS.OCO_API_CUSTOM_HEADERS]?: string;
   [CONFIG_KEYS.OCO_DESCRIPTION]: boolean;
   [CONFIG_KEYS.OCO_EMOJI]: boolean;
   [CONFIG_KEYS.OCO_WHY]: boolean;
@@ -462,6 +480,7 @@ const getEnvConfig = (envPath: string) => {
     OCO_MODEL: process.env.OCO_MODEL,
     OCO_API_URL: process.env.OCO_API_URL,
     OCO_API_KEY: process.env.OCO_API_KEY,
+    OCO_API_CUSTOM_HEADERS: process.env.OCO_API_CUSTOM_HEADERS,
     OCO_AI_PROVIDER: process.env.OCO_AI_PROVIDER as OCO_AI_PROVIDER_ENUM,
 
     OCO_TOKENS_MAX_INPUT: parseConfigVarValue(process.env.OCO_TOKENS_MAX_INPUT),

src/engine/Engine.ts

@@ -11,6 +11,7 @@ export interface AiEngineConfig {
   maxTokensOutput: number;
   maxTokensInput: number;
   baseURL?: string;
+  customHeaders?: Record<string, string>;
 }
 
 type Client =

src/engine/ollama.ts

@@ -11,11 +11,18 @@ export class OllamaEngine implements AiEngine {
 
   constructor(config) {
     this.config = config;
+
+    // Combine base headers with custom headers
+    const headers = { 
+      'Content-Type': 'application/json',
+      ...config.customHeaders 
+    };
+
     this.client = axios.create({
       url: config.baseURL
         ? `${config.baseURL}/${config.apiKey}`
         : 'http://localhost:11434/api/chat',
-      headers: { 'Content-Type': 'application/json' }
+      headers
     });
   }
 

src/engine/openAi.ts

@@ -1,6 +1,7 @@
 import axios from 'axios';
 import { OpenAI } from 'openai';
 import { GenerateCommitMessageErrorEnum } from '../generateCommitMessageFromGitDiff';
+import { parseCustomHeaders } from '../utils/engine';
 import { removeContentTags } from '../utils/removeContentTags';
 import { tokenCount } from '../utils/tokenCount';
 import { AiEngine, AiEngineConfig } from './Engine';
@@ -14,11 +15,22 @@ export class OpenAiEngine implements AiEngine {
   constructor(config: OpenAiConfig) {
     this.config = config;
 
-    if (!config.baseURL) {
-      this.client = new OpenAI({ apiKey: config.apiKey });
-    } else {
-      this.client = new OpenAI({ apiKey: config.apiKey, baseURL: config.baseURL });
+    const clientOptions: OpenAI.ClientOptions = {
+      apiKey: config.apiKey
+    };
+
+    if (config.baseURL) {
+      clientOptions.baseURL = config.baseURL;
+    }
+
+    if (config.customHeaders) {
+      const headers = parseCustomHeaders(config.customHeaders);
+      if (Object.keys(headers).length > 0) {
+        clientOptions.defaultHeaders = headers;
+      }
     }
+
+    this.client = new OpenAI(clientOptions);
   }
 
   public generateCommitMessage = async (
@@ -42,7 +54,7 @@ export class OpenAiEngine implements AiEngine {
         this.config.maxTokensInput - this.config.maxTokensOutput
       )
         throw new Error(GenerateCommitMessageErrorEnum.tooMuchTokens);
-
+      
       const completion = await this.client.chat.completions.create(params);
 
       const message = completion.choices[0].message;

src/utils/engine.ts

@@ -12,16 +12,39 @@ import { GroqEngine } from '../engine/groq';
 import { MLXEngine } from '../engine/mlx';
 import { DeepseekEngine } from '../engine/deepseek';
 
+export function parseCustomHeaders(headers: any): Record<string, string> {
+  let parsedHeaders = {};
+
+  if (!headers) {
+    return parsedHeaders;
+  }
+
+  try {
+    if (typeof headers === 'object' && !Array.isArray(headers)) {
+      parsedHeaders = headers;
+    } else {
+      parsedHeaders = JSON.parse(headers);
+    }
+  } catch (error) {
+    console.warn('Invalid OCO_API_CUSTOM_HEADERS format, ignoring custom headers');
+  }
+
+  return parsedHeaders;
+}
+
 export function getEngine(): AiEngine {
   const config = getConfig();
   const provider = config.OCO_AI_PROVIDER;
 
+  const customHeaders = parseCustomHeaders(config.OCO_API_CUSTOM_HEADERS);
+
   const DEFAULT_CONFIG = {
     model: config.OCO_MODEL!,
     maxTokensOutput: config.OCO_TOKENS_MAX_OUTPUT!,
     maxTokensInput: config.OCO_TOKENS_MAX_INPUT!,
     baseURL: config.OCO_API_URL!,
-    apiKey: config.OCO_API_KEY!
+    apiKey: config.OCO_API_KEY!,
+    customHeaders
   };
 
   switch (provider) {

test/unit/config.test.ts

@@ -122,6 +122,30 @@
       expect(config.OCO_ONE_LINE_COMMIT).toEqual(false);
       expect(config.OCO_OMIT_SCOPE).toEqual(true);
     });
+
+    it('should handle custom HTTP headers correctly', async () => {
+      globalConfigFile = await generateConfig('.opencommit', {
+        OCO_API_CUSTOM_HEADERS: '{"X-Global-Header": "global-value"}'
+      });
+
+      envConfigFile = await generateConfig('.env', {
+        OCO_API_CUSTOM_HEADERS: '{"Authorization": "Bearer token123", "X-Custom-Header": "test-value"}'
+      });
+
+      const config = getConfig({
+        globalPath: globalConfigFile.filePath,
+        envPath: envConfigFile.filePath
+      });
+
+      expect(config).not.toEqual(null);
+      expect(config.OCO_API_CUSTOM_HEADERS).toEqual({"Authorization": "Bearer token123", "X-Custom-Header": "test-value"});
+
+      // No need to parse JSON again since it's already an object
+      const parsedHeaders = config.OCO_API_CUSTOM_HEADERS;
+      expect(parsedHeaders).toHaveProperty('Authorization', 'Bearer token123');
+      expect(parsedHeaders).toHaveProperty('X-Custom-Header', 'test-value');
+      expect(parsedHeaders).not.toHaveProperty('X-Global-Header');
+    });
 
     it('should handle empty local config correctly', async () => {
       globalConfigFile = await generateConfig('.opencommit', {