# -*- coding: utf-8 -*-

import os

import shutil

import system_tests

class DoNotDestroyHardLinks(metaclass=system_tests.CaseMeta):

    def setUp(self):

        shutil.copy(self.orig_file, self.filename)

        os.link(self.filename, self.link_1)

        os.link(self.filename, self.link_2)

    def tearDown(self):

        for f in [self.filename, self.link_1, self.link_2]:

            os.remove(f)

    url = "http://dev.exiv2.org/issues/812"

    num = 812

    # original file, copy & hardlinks

    orig_file = "$data_path/exiv2-bug884c.jpg"

    filename = "$data_path/exiv2-bug$num.jpg"

    link_1 = "$data_path/exiv2-bug$num-B.jpg"

    link_2 = "$data_path/exiv2-bug$num-C.jpg"

    # list of files passed to exiv2 since we can't use * in the command

    file_list = "{!s} {!s} {!s}".format(filename, link_1,  link_2)

    commands = [

        """$exiv2 -u -v -M"set Exif.Photo.UserComment Test Bug $num" $filename""",

        "$exiv2 -PE -g UserComment $file_list",

        """$exiv2 -u -v -M"set Exif.Photo.UserComment Test Bug $num modified" $filename""",

        "$exiv2 -PE -g UserComment $file_list"

    ]

    first_change = "Exif.Photo.UserComment                       Undefined  20  Test Bug 812"

    second_change = "Exif.Photo.UserComment                       Undefined  29  Test Bug 812 modified"

    stdout = [

        """File 1/1: $filename

Set Exif.Photo.UserComment "Test Bug 812" (Comment)

""",

        """$filename  $first_change

$link_1  $first_change

$link_2  $first_change

""",

        """File 1/1: $filename

Set Exif.Photo.UserComment "Test Bug 812 modified" (Comment)

""",

        """$filename  $second_change

$link_1  $second_change

$link_2  $second_change

"""

    ]

    stderr = [""] * 4

    retval = [0] * 4