#!/usr/bin/env python
from __future__ import print_function

import os
import subprocess
import re
import sys

import logging
import logging.config
LOGGER_CONFIG_FILE = os.path.join(os.path.abspath(os.path.dirname(__file__)), 'logging.ini')
logging.config.fileConfig(LOGGER_CONFIG_FILE)
logger = logging.getLogger(__name__)

try:
    import xmlrunner
except:
    logger.error("xmlrunner needs to be installed to run these tests")
    logger.error("Try easy_install unittest-xml-reporting")
    sys.exit(1)

# Check whether we have matplotlib installed
HAS_MPL_WX = True
try:
    import matplotlib
    import wx
except ImportError:
    HAS_MPL_WX = False

SKIPPED_DIRS = ["sasrealspace", "calculatorview"]
if not HAS_MPL_WX:
    SKIPPED_DIRS.append("sasguiframe")

#COMMAND_SEP = ';'
#if os.name == 'nt':
#    COMMAND_SEP = '&'

def run_tests(dirs=None, run_all=False):
    test_root = os.path.abspath(os.path.dirname(__file__))
    run_one_py = os.path.join(test_root, 'run_one.py')
    passed = 0
    failed = 0
    n_tests = 0
    n_errors = 0
    n_failures = 0

    failure_text = []

    for d in (dirs if dirs else os.listdir(test_root)):

        # Check for modules to be skipped
        if d in SKIPPED_DIRS:
            continue


        # Go through modules looking for unit tests
        module_dir = os.path.join(test_root, d, "test")
        if os.path.isdir(module_dir):
            for f in os.listdir(module_dir):
                file_path = os.path.join(module_dir,f)
                if os.path.isfile(file_path) and f.startswith("utest_") and f.endswith(".py"):
                    module_name,_ = os.path.splitext(f)
                    code = '"%s" %s %s'%(sys.executable, run_one_py, file_path)
                    proc = subprocess.Popen(code, shell=True, stdout=subprocess.PIPE, stderr = subprocess.STDOUT)
                    std_out, std_err = proc.communicate()
                    std_out, std_err = std_out.decode(), (std_err.decode() if std_err else None)
                    #print(">>>>>> standard out", file_path, "\n", std_out, "\n>>>>>>>>> end stdout", file_path)
                    #print(">>>>>> standard err", file_path, "\n", std_err, "\n>>>>>>>>> end stderr", file_path)
                    #sys.exit()
                    m = re.search("Ran ([0-9]+) test", std_out)
                    if m is not None:
                        n_tests += int(m.group(1))
                        has_tests = True
                    else:
                        has_tests = False

                    has_failed = "FAILED (" in std_out
                    if has_failed:
                        if std_out:
                            failure_text.append("== %s std out ==\n%s"
                                                % (module_name, std_out))
                        if std_err:
                            failure_text.append("== %s std err ==\n%s"
                                                % (module_name, std_out))

                    m = re.search("FAILED \(.*errors=([0-9]+)", std_out)
                    if m is not None:
                        n_errors += int(m.group(1))
                    m = re.search("FAILED \(.*failures=([0-9]+)", std_out)
                    if m is not None:
                        n_failures += int(m.group(1))

                    if has_failed or not has_tests:
                        failed += 1
                        modpath = os.path.join(module_dir, module_name+".py")
                        print("Result for %s: FAILED    %s"
                              % (module_name, os.path.relpath(modpath, os.getcwd())))
                        #print(std_out)
                    else:
                        passed += 1
                        print("Result for %s: SUCCESS" % module_name)

    print("\n----------------------------------------------")
    if n_tests == 0:
        print("No tests.")
    else:
        print("Results by test modules:")
        print("    PASSED: %d" % passed)
        ratio = 100.0*failed/(failed+passed)
        print("    FAILED: %d    (%.0f%%)" % (failed,ratio))

        print("Results by tests:")
        print("    Tests run:    %d" % n_tests)
        print("    Tests failed: %d" % n_failures)
        print("    Test errors:  %d" % n_errors)
    print("----------------------------------------------")

    print("\n\n".join(failure_text))

    return failed

if __name__ == '__main__':
    run_all = (len(sys.argv) > 1 and sys.argv[1] == '-all')
    dirs = sys.argv[1:] if not run_all else sys.argv[2:]
    if run_tests(dirs=dirs, run_all=run_all)>0:
        sys.exit(1)
