import subprocess

#
# Check if config contains all the listed params
#
def contains(params, config):
    for p in params:
        if p not in config:
            return False
    return True

# Check if a config boolean is set
def configtrue(name, config):
    if name in config and config[name]:
        return True
    return False

# Get a configuration variable, check overrides, first, the defaults
def getconfigvar(name, config, target, stepnum):
    step = "step" + str(stepnum)
    if target in config['overrides']:
        if step in config['overrides'][target] and name in config['overrides'][target][step]:
            return config['overrides'][target][step][name]
        if name in config['overrides'][target]:
            return config['overrides'][target][name]
    if name in config['defaults']: 
        return config['defaults'][name]
    return False

def getconfiglist(name, config, target, stepnum):
    ret = []
    step = "step" + str(stepnum)
    if target in config['overrides']:
        if step in config['overrides'][target] and name in config['overrides'][target][step]:
            ret.extend(config['overrides'][target][step][name])
        if name in config['overrides'][target]:
            ret.extend(config['overrides'][target][name])
    if name in config['defaults']: 
        ret.extend(config['defaults'][name])
    return ret

#
# Run a command, trigger a traceback with command output if it fails
#
def runcmd(cmd):
    return subprocess.check_output(cmd, stderr=subprocess.STDOUT)

def printheader(msg):
    print("\n\n")
    print("====================================================================================================")
    print(msg)
    print("====================================================================================================")