Change open router

action.yml

@@ -1,14 +1,14 @@
-name: 'Flutter AI Code Reviewer (Gemini)'
-description: 'Automated Flutter/Dart code review using Google Gemini AI with Clean Architecture standards'
+name: 'Flutter AI Code Reviewer (OpenRouter)'
+description: 'Automated Flutter/Dart code review using OpenRouter AI with Clean Architecture standards'
 author: 'vincetran'
 
 branding:
   icon: 'check-circle'
   color: 'blue'
 
 inputs:
-  gemini-api-key:
-    description: 'Google Gemini API key for AI code review'
+  openrouter-api-key:
+    description: 'OpenRouter API key for AI code review'
     required: true
   github-token:
     description: 'GitHub token for posting PR comments (use secrets.GITHUB_TOKEN)'
@@ -32,10 +32,10 @@ runs:
         python -m pip install --upgrade pip
         pip install -r ${{ github.action_path }}/scripts/requirements.txt
 
-    - name: Run Gemini AI Code Reviewer
+    - name: Run OpenRouter AI Code Reviewer
       shell: bash
       env:
-        GEMINI_API_KEY: ${{ inputs.gemini-api-key }}
+        OPENROUTER_API_KEY: ${{ inputs.openrouter-api-key }}
         GITHUB_TOKEN: ${{ inputs.github-token }}
         GITHUB_REPOSITORY: ${{ github.repository }}
         GITHUB_REF: ${{ github.ref }}

scripts/ai_review.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-"""AI reviewer script for GitHub Actions using Google Gemini.
+"""AI reviewer script for GitHub Actions using OpenRouter AI.
 
 This is the main orchestrator that coordinates all components:
 - Configuration validation
@@ -11,7 +11,7 @@
 For detailed implementation, see the reviewer package modules:
 - config.py: Configuration and environment variables
 - github_client.py: GitHub API operations
-- gemini_client.py: Gemini AI integration
+- openrouter_client.py: OpenRouter AI integration
 - prompt_builder.py: Prompt construction
 - utils.py: Helper functions
 """
@@ -20,7 +20,7 @@
 
 from reviewer.config import Config
 from reviewer.github_client import GitHubClient, GitHubAPIError
-from reviewer.gemini_client import GeminiClient, GeminiAPIError
+from reviewer.openrouter_client import OpenRouterClient, OpenRouterAPIError
 from reviewer.prompt_builder import PromptBuilder
 from reviewer.utils import (
     get_pr_number_from_ref,
@@ -53,7 +53,7 @@ def main():
 
     # Initialize clients
     github_client = GitHubClient(Config.GITHUB_REPOSITORY, Config.GITHUB_TOKEN)
-    gemini_client = GeminiClient(Config.GEMINI_API_KEY)
+    openrouter_client = OpenRouterClient(Config.OPENROUTER_API_KEY)
     prompt_builder = PromptBuilder(Config.REVIEW_LANGUAGE)
 
     # Step 1: Fetch PR diff
@@ -76,17 +76,17 @@ def main():
                 print(f"💬 Reviewing chunk {idx + 1}/{len(prompt_chunks)} "
                       f"({len(chunk.files)} files: {', '.join(chunk.files[:3])}...)")
             else:
-                print("💬 Sending prompt to Gemini AI...")
+                print("💬 Sending prompt to OpenRouter AI...")
 
-            review = gemini_client.generate_review(prompt)
+            review = openrouter_client.generate_review(prompt)
             all_reviews.append({
                 'chunk_index': idx,
                 'files': chunk.files,
                 'review': review
             })
 
-        except GeminiAPIError as e:
-            print(f"❌ Gemini call failed for chunk {idx + 1}: {e}")
+        except OpenRouterAPIError as e:
+            print(f"❌ OpenRouter call failed for chunk {idx + 1}: {e}")
 
             # If first chunk fails, post fallback comment and exit
             if idx == 0:

scripts/requirements.txt

@@ -1,2 +1 @@
-google-generativeai>=0.8.3
 requests>=2.32.3

scripts/reviewer/__init__.py

@@ -1,10 +1,10 @@
-"""AI Code Reviewer Package for Flutter/Dart projects using Google Gemini."""
+"""AI Code Reviewer Package for Flutter/Dart projects using OpenRouter AI."""
 
-__version__ = "1.0.0"
+__version__ = "3.0.0"
 
 from .config import Config
 from .github_client import GitHubClient, GitHubAPIError
-from .gemini_client import GeminiClient, GeminiAPIError
+from .openrouter_client import OpenRouterClient, OpenRouterAPIError
 from .prompt_builder import PromptBuilder
 from .diff_chunker import DiffChunker, DiffChunk
 from .utils import (
@@ -18,8 +18,8 @@
     "Config",
     "GitHubClient",
     "GitHubAPIError",
-    "GeminiClient",
-    "GeminiAPIError",
+    "OpenRouterClient",
+    "OpenRouterAPIError",
     "PromptBuilder",
     "DiffChunker",
     "DiffChunk",

scripts/reviewer/config.py

@@ -10,52 +10,42 @@ class Config:
     """Configuration class for managing environment variables and constants."""
 
     # Environment variables
-    GEMINI_API_KEY = os.getenv("GEMINI_API_KEY")
+    OPENROUTER_API_KEY = os.getenv("OPENROUTER_API_KEY")
     GITHUB_TOKEN = os.getenv("GITHUB_TOKEN")
     GITHUB_REPOSITORY = os.getenv("GITHUB_REPOSITORY")
     GITHUB_REF = os.getenv("GITHUB_REF", "")
     REVIEW_LANGUAGE = os.getenv("REVIEW_LANGUAGE", "vietnamese").lower()
 
+    # OpenRouter model configuration
+    # Model is controlled by project maintainers, users cannot override
+    # Change this value here to switch models:
+    # Free options:
+    #   - "x-ai/grok-4.1-fast:free" (Free, fast, supports reasoning)
+    #   - "google/gemini-2.0-flash-exp:free" (Free, high quality)
+    # Paid options:
+    #   - "anthropic/claude-3.5-sonnet" (Excellent for code review)
+    #   - "openai/gpt-4-turbo" (High quality)
+    OPENROUTER_MODEL = "x-ai/grok-4.1-fast:free"
+
     # Constants
     MAX_DIFF_LENGTH = 100000  # Limit diff size to avoid huge token payloads (increased from 12k)
     MAX_COMMENT_LENGTH = 60000  # GitHub has 65,536 char limit, use 60k for safety
-    COMMENT_HEADER = "🤖 **AI Code Review - Flutter (Gemini)**\n\n"
+    COMMENT_HEADER = "🤖 **AI Code Review - Flutter (OpenRouter)**\n\n"
 
     # Diff processing settings
     WARN_DIFF_TRUNCATED = True  # Warn in prompt if diff was truncated
 
-    # Gemini model preferences (ordered by priority)
-    # Flash models have higher quota (15 RPM) vs Pro models (2 RPM)
-    PREFERRED_MODEL_PATTERNS = [
-        'flash-latest',    # Best: gemini-flash-latest (15 RPM free tier)
-        '2.5-flash',       # Good: gemini-2.5-flash
-        '2.0-flash',       # Good: gemini-2.0-flash
-        'flash',           # Any flash model
-        'pro-latest',      # Lower priority: gemini-pro-latest (2 RPM only!)
-        'pro',             # Fallback: any pro model
-    ]
-
-    # Fallback models if detection fails
-    FALLBACK_MODELS = [
-        'models/gemini-flash-latest',
-        'models/gemini-2.5-flash',
-        'models/gemini-2.0-flash',
-        'models/gemini-pro-latest',
-    ]
-
-    # Models to exclude (special purpose models)
-    EXCLUDED_MODEL_KEYWORDS = [
-        'thinking', 'tts', 'image', 'gemma', 'learnlm'
-    ]
-
-    # Gemini generation settings
+    # OpenRouter generation settings
     GENERATION_CONFIG = {
         "temperature": 0.7,
         "top_p": 0.95,
-        "top_k": 40,
-        "max_output_tokens": 32000,  # Increased from 8192 to handle large reviews
+        "max_output_tokens": 32000,  # Max tokens for response
     }
 
+    # Enable reasoning for supported models (e.g., grok-4.1-fast)
+    # This is controlled by project, users cannot override
+    ENABLE_REASONING = True  # Set to False to disable reasoning
+
     # Retry configuration
     MAX_RETRIES = 2
     INITIAL_RETRY_DELAY = 5  # seconds
@@ -70,8 +60,8 @@ def validate(cls) -> list[str]:
         """
         errors = []
 
-        if not cls.GEMINI_API_KEY:
-            errors.append("GEMINI_API_KEY is not set")
+        if not cls.OPENROUTER_API_KEY:
+            errors.append("OPENROUTER_API_KEY is not set")
 
         if not cls.GITHUB_TOKEN:
             errors.append("GITHUB_TOKEN is not set")
@@ -90,10 +80,12 @@ def print_debug_info(cls):
         print("=" * 60)
         print("🔍 Environment Variables Check:")
         print("=" * 60)
-        print(f"   GITHUB_REF:        {cls.GITHUB_REF or '❌ NOT SET'}")
-        print(f"   GITHUB_REPOSITORY: {cls.GITHUB_REPOSITORY or '❌ NOT SET'}")
-        print(f"   GITHUB_TOKEN:      {'✅ SET (' + cls.GITHUB_TOKEN[:8] + '...)' if cls.GITHUB_TOKEN else '❌ NOT SET'}")
-        print(f"   GEMINI_API_KEY:    {'✅ SET' if cls.GEMINI_API_KEY else '❌ NOT SET'}")
-        print(f"   REVIEW_LANGUAGE:   {cls.REVIEW_LANGUAGE}")
+        print(f"   GITHUB_REF:           {cls.GITHUB_REF or '❌ NOT SET'}")
+        print(f"   GITHUB_REPOSITORY:    {cls.GITHUB_REPOSITORY or '❌ NOT SET'}")
+        print(f"   GITHUB_TOKEN:         {'✅ SET (' + cls.GITHUB_TOKEN[:8] + '...)' if cls.GITHUB_TOKEN else '❌ NOT SET'}")
+        print(f"   OPENROUTER_API_KEY:   {'✅ SET' if cls.OPENROUTER_API_KEY else '❌ NOT SET'}")
+        print(f"   OPENROUTER_MODEL:     {cls.OPENROUTER_MODEL} (configured in code)")
+        print(f"   REVIEW_LANGUAGE:      {cls.REVIEW_LANGUAGE}")
+        print(f"   ENABLE_REASONING:     {cls.ENABLE_REASONING} (configured in code)")
         print("=" * 60)
         print()