# From git_driver.py:11-86
def create_fork(repo_owner, repo_name):
    # Check if user owns the repository
    if username.lower() == repo_owner.lower():
        # No fork needed - work directly on the repo
        return original_repo_data
    
    # Check if fork already exists
    # If not, create a temporary staging fork
    fork_data = create_new_fork()

# From containers.py:18-51
@app.function(secrets=[modal.Secret.from_name("GROQ_API_KEY")])
def run_script(repo_url: str) -> list[CodeChange]:
    # Clone repository into isolated container
    subprocess.run(["git", "clone", repo_url, "repository"])
    
    # Scan for outdated patterns using Groq AI
    data = fetch_updates(os.getcwd() + "/repository")
    
    return [change.model_dump(mode="json") for change in data]

# From modal_write.py:33-186
@app.function(
    timeout=300,  # 5 minutes per file
    max_containers=100,  # Process 100 files in parallel
    min_containers=3,  # Keep 3 warm for faster response
)
def process_file(job):
    # Initialize Groq client with instructor
    client = instructor.from_groq(Groq(api_key=GROQ_API_KEY))
    
    # Generate refactored code with explanations
    job_report = client.chat.completions.create(
        model="llama-3.3-70b-versatile",
        response_model=JobReport,
        messages=[...]
    )
    
    # Validate syntax and calculate confidence score
    validation_result, confidence_score = validate_and_score(
        file_path, old_code, job_report.refactored_code
    )

# From changelog_formatter.py:363-430
def generate_pr_description(file_changes: List[FileChange]) -> str:
    # Calculate accurate diff statistics
    total_added, total_removed = calculate_diff_stats()
    
    # Extract key changes from AI explanations
    key_changes = extract_key_changes(old_code, new_code, explanation)
    
    # Generate file-by-file breakdown
    # - What changed (specific modernizations)
    # - Why it changed (AI reasoning)
    # - Impact (lines added/removed)

# From git_driver.py:114-180
def create_and_push_branch(repo, origin, files_to_stage):
    # Create unique branch name
    new_branch_name = f"dependify-{uuid.uuid4().hex[:8]}"
    new_branch = repo.create_head(new_branch_name)
    new_branch.checkout()
    
    # Stage all refactored files
    repo.index.add(files_to_stage)
    
    # Commit with descriptive message
    commit_message = """🤖 Automated code modernization by Dependify
    
    This commit contains automated refactoring to update outdated syntax
    and improve code quality using AI-powered analysis.
    
    Generated with Dependify 2.0
    """
    repo.index.commit(commit_message)
    
    # Push to remote with authentication
    origin.push(new_branch)

# From git_driver.py:182-302
def create_pull_request(new_branch_name, repo_owner, repo_name, 
                       base_branch, head_owner, is_own_repo, 
                       changelog_markdown):
    # Determine PR head based on ownership
    if is_own_repo:
        head = new_branch_name  # Direct branch in user's repo
    else:
        head = f"{head_owner}:{new_branch_name}"  # Fork branch
    
    # Create PR with detailed changelog
    data = {
        "title": "🤖 Automated code modernization by Dependify",
        "head": head,
        "base": base_branch,
        "body": changelog_markdown
    }
    
    response = requests.post(github_pr_url, json=data)