'''
Created on 22 nov. 2016

@author: olivier.massot
'''
import os
import re

import file


# regex for ignoring lines in file comparison
CMP_IGNORE_LINES = ["<dataroot xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" generated=\"\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\"/?>"]

def compare_dirs(source_dir, reference_dir):
    print("** Compare {} to {} **".format(source_dir, reference_dir))
    err_code = 0
    list_source_dir = file.flist(source_dir, recursive=True, listdirs=False, listfiles=True, complete_paths=True)

    list_reference_dir = file.flist(reference_dir, recursive=True, listdirs=False, listfiles=True, complete_paths=True)

    if len(list_source_dir) != len(list_reference_dir):
        print(">> number of dirs / files does not match")
        print("Diff:")
        lst_source_names = [f.replace(source_dir, "") for f in list_source_dir]
        lst_ref_names = [f.replace(reference_dir, "") for f in list_reference_dir]

        for name in list(set(lst_source_names) - set(lst_ref_names)):
            print("+ " + name)
            err_code += 1
        for name in list(set(lst_ref_names) - set(lst_source_names)):
            print("- " + name)
            err_code += 1


    for source_path in list_source_dir:
        ref_path = source_path.replace(source_dir, reference_dir)
        identical = compare_files(source_path, ref_path)
        if not identical:
            err_code += 1

    return err_code

def compare_files(path1, path2):
    """ return True if files are identicals """
    linecount = 0
    with open(path1, "r") as file1:

        with open(path2, "r") as file2:

            for line in file1:
                linecount += 1

                if line != file2.readline():
                    ignore = False
                    try:
                        for ignore_regex in CMP_IGNORE_LINES:
                            if re.match(ignore_regex, line) != None:
                                ignore = True
                    except:
                        pass
                    if not ignore:
                        print("> {} : source and ref differ at line {}".format(path1, linecount))
                        return False
    return True


def clean_sources(sources_path):
    print("Clean the sources")

    # remove the source code of test module and macros
    for file_path in ("modules\\test_methods.bas",
                      "macros\\test_export.bas",
                      "macros\\test_import.bas"):
        sources_path = os.path.abspath(sources_path)
        try:
            os.remove(file.fjoin(sources_path, file_path))
        except FileNotFoundError:
            pass

def verify_log(log_path):
    error_count = 0
    critical_found = False
    with open(os.path.abspath(log_path), "r") as log_file:
        for line in log_file:
            if "ERROR" in line:
                error_count += 1
            if "CRITICAL" in line:
                critical_found = True
                print("CRITICAL ERROR found in the log file ({})".format(log_path))
                break
    if error_count > 0:
        print("Warning: ERRORS found in the log file ({})".format(log_path))

    return 0 if not critical_found else 1