Function _load_credentials

src/codegraphcontext/cli/main.py:287–483

Loads configuration and credentials from various sources into environment variables. Uses per-variable precedence - each variable is loaded from the highest priority source. Priority order (highest to lowest): 1. Runtime environment variables (shell/CI) 2. Local `.env` in projec

()

# ============================================================================

def _load_credentials():
    """
    Loads configuration and credentials from various sources into environment variables.
    Uses per-variable precedence - each variable is loaded from the highest priority source.
    Priority order (highest to lowest):
    1. Runtime environment variables (shell/CI)
    2. Local `.env` in project directory (project-specific overrides)
    3. Global `~/.codegraphcontext/.env` (user defaults, including `cgc config set`)
    4. Local `mcp.json` env vars (project defaults)
    1. Local `mcp.json` env vars (highest - explicit MCP server config)
    2. ``<cwd>/.codegraphcontext/.env`` only (no parent-directory walk)
    3. Global `~/.codegraphcontext/.env` (lowest - user defaults)

    Step 2 skips duplicate loading when that file is the same path as the global file.
    Arbitrary repo-root `.env` files are not loaded—only CodeGraphContext config paths.
    """
    from dotenv import dotenv_values
    from codegraphcontext.cli.config_manager import (
        ensure_config_dir,
        codegraphcontext_dotenv_at_cwd,
    )
    
    # Ensure config directory exists (lazy initialization)
    ensure_config_dir()
    
    # Snapshot runtime environment BEFORE merging config files.
    # These values must remain highest priority.
    runtime_env = dict(os.environ)

    # Collect all config sources in precedence order (lowest to highest)
    config_sources = []
    config_source_names = []
    key_source_map = {}
    key_defined_in = {}

    def _append_source(source_name: str, source_values: dict):
        if not source_values:
            return
        config_sources.append(source_values)
        config_source_names.append(source_name)
        for k, v in source_values.items():
            if v is None:
                continue
            key_source_map[k] = source_name
            key_defined_in.setdefault(k, []).append(source_name)

    # 4. Local mcp.json (lowest priority - project defaults)
    mcp_file_path = Path.cwd() / "mcp.json"
    if mcp_file_path.exists():
        try:
            with open(mcp_file_path, "r") as f:
                mcp_config = json.load(f)
            server_env = mcp_config.get("mcpServers", {}).get("CodeGraphContext", {}).get("env", {})
            _append_source("mcp.json", server_env)
        except Exception as e:
            console.print(f"[yellow]Warning: Could not load mcp.json: {e}[/yellow]")
    
    # 3. Global .env file (user defaults)