Installation

# Required for pricehistory endpoint
sessionid=YOUR_STEAM_SESSION_ID
steamLoginSecure=YOUR_STEAM_LOGIN_SECURE_COOKIE

# Optional Steam cookies
browserid=YOUR_BROWSER_ID
steamCountry=US

def validate_required_fields(self, items: list):
    """Validate that each item has all required fields."""
    valid_apiids = {'priceoverview', 'itemordershistogram', 'itemordersactivity', 'pricehistory'}
    
    for index, item in enumerate(items):
        # Check universal required fields
        required = ['market_hash_name', 'apiid', 'polling-interval-in-seconds', 'appid']
        
        for field in required:
            if field not in item:
                print(f"\n❌ CONFIG ERROR: Item {index + 1} missing required field '{field}'")
                exit(1)
        
        # Validate apiid is recognized
        if item['apiid'] not in valid_apiids:
            print(f"\n❌ CONFIG ERROR: Item {index + 1} has invalid apiid '{item['apiid']}'")
            exit(1)
        
        # Check endpoint-specific required fields
        if item['apiid'] in ('itemordershistogram', 'itemordersactivity'):
            if 'item_nameid' not in item:
                print(f"\n❌ CONFIG ERROR: Item {index + 1} missing 'item_nameid'")
                exit(1)

def validate_config_feasibility(self, rate_limit: int, window_seconds: int, items: list):
    """Validate that config is feasible given rate limits."""
    total_reqs = 0

    for item in items:
        reqs_per_window = window_seconds // item['polling-interval-in-seconds']
        total_reqs += reqs_per_window

    if total_reqs > rate_limit:
        print(f"\n❌ CONFIG ERROR: Infeasible configuration")
        print(f"   Calculated: {total_reqs} requests per {window_seconds}s")
        print(f"   Limit: {rate_limit} requests per {window_seconds}s")
        exit(1)

    # Success - config is feasible
    utilization = (total_reqs / rate_limit) * 100
    print(f"  ✓ Config feasible: {total_reqs} req/{window_seconds}s ({utilization:.1f}% capacity)")