import os
import subprocess
def getAlgParams(f):
    params = []
    booleanparams = []
    numparams = []
    lines = open(f)
    line = lines.readline().strip('\n').strip()
    name = line
    if '|' in name:
        tokens = name.split('|')
        cmdname = tokens[1]
    else:
        cmdname = name
    line = lines.readline().strip('\n').strip()
    group = line
    line = lines.readline().strip('\n').strip()
    while line != '':
        if line.startswith('Hardcoded'):
            pass
        elif line.startswith('AllowUnmatching'):
            pass
        elif line.startswith('Extent'):
            extentParamNames = line[6:].strip().split(' ')
            params.extend(["-" + p  for p in extentParamNames])
        else:
            tokens = line.split("|")
            if tokens[0] == "ParameterBoolean":
                booleanparams.append("-" + tokens[1].strip())
            elif tokens[0] == "ParameterNumber":
                numparams.append("-" + tokens[1].strip())
            else:
                params.append("-" + tokens[1])
        line = lines.readline().strip('\n').strip()
    lines.close()
    return cmdname, group, params, booleanparams, numparams

def testDescriptionFile(f):
    usage = ""
    cmdname,group,params,booleanparams,numparams = getAlgParams(f)
    command = [r'd:\saga2.1.2\saga_cmd.exe', group, cmdname]
    for p in params:
        command.append(p)
        command.append("dummy")
    for p in numparams:
        command.append(p)
        command.append("0")
    command.extend(booleanparams)
    proc = subprocess.Popen(
        command,
        shell=True,
        stdout=subprocess.PIPE,
        stdin=open(os.devnull),
        stderr=subprocess.STDOUT,
        universal_newlines=True,
        ).stdout
    lines = []
    for line in iter(proc.readline, ''):
        lines.append(line)
        if "Usage" in line:
            usage = line

    if usage and not lines[0].startswith("_"):
        print "-" * 50
        print f + " [ERROR]"
        print lines
        print usage
        print "Name in description:" + cmdname
        print "Parameters in description:" + str(params)
        print "-" * 50
        print


if __name__ == '__main__':
    folder = os.path.join(os.path.dirname(__file__), "description")
    for descriptionFile in os.listdir(folder):
        if descriptionFile.endswith('txt'):
            testDescriptionFile(os.path.join(folder, descriptionFile))