import os
import inspect
import globals
import sys

# the debug levels:
# 0 = minimum output (default)
# 1 = major stages
# 2 = verbose
# n = custom setting


def check(check, str):
    if not check:
        (frame, filename, line_number, function_name, lines,
         index) = inspect.getouterframes(inspect.currentframe())[1]
        sys.stderr.write("ERROR: file {0}: line {1}: {2}\n".format(
            os.path.basename(filename), line_number, str))
        logger.log("ERROR: file {0}: line {1}: {2}\n".format(
            os.path.basename(filename), line_number, str))

        assert 0


def error(str, return_value=0):
    (frame, filename, line_number, function_name, lines,
     index) = inspect.getouterframes(inspect.currentframe())[1]
    sys.stderr.write("ERROR: file {0}: line {1}: {2}\n".format(
        os.path.basename(filename), line_number, str))
    logger.log("ERROR: file {0}: line {1}: {2}\n".format(
        os.path.basename(filename), line_number, str))

    assert return_value == 0


def warning(str):
    (frame, filename, line_number, function_name, lines,
     index) = inspect.getouterframes(inspect.currentframe())[1]
    sys.stderr.write("WARNING: file {0}: line {1}: {2}\n".format(
        os.path.basename(filename), line_number, str))
    logger.log("WARNING: file {0}: line {1}: {2}\n".format(
        os.path.basename(filename), line_number, str))


def print_raw(str):
    print(str)
    log(str)


def log(str):
    if  globals.OPTS.output_name != '':
        if log.create_file:
            compile_log = open(globals.OPTS.output_path +
                               globals.OPTS.output_name + '.log', "w+")
            log.create_file = 0
        else:
            compile_log = open(globals.OPTS.output_path +
                               globals.OPTS.output_name + '.log', "a")

        if len(log.setup_output) != 0:
            for line in log.setup_output:
                compile_log.write(line)
            log.setup_output = []
        compile_log.write(str + '\n')
    else:
        log.setup_output.append(str + "\n")


# use a static list of strings to store messages until the global paths are set up
log.setup_output = []
log.create_file = 1


def info(lev, str):
    from globals import OPTS
    if (OPTS.debug_level >= lev):
        frm = inspect.stack()[1]
        mod = inspect.getmodule(frm[0])
        # classname = frm.f_globals['__name__']
        if mod.__name__ == None:
            class_name = ""
        else:
            class_name = mod.__name__
        print_raw("[{0}/{1}]: {2}".format(class_name,
                                          frm[0].f_code.co_name, str))