import os
from pathlib import Path
import tempfile
import shutil
import sys
sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
from slic.utils.path import *
import slic.utils.ask_yes_no 

# Tests when user says yes to delete if the file exists 
def test_can_create_all_files_user_says_yes():
    slic.utils.ask_yes_no.ask_yes_no = lambda msg, **kwargs: True

    tmp_dir = tempfile.mkdtemp()
    f1 = os.path.join(tmp_dir, "a.txt")  # exists
    f2 = os.path.join(tmp_dir, "b.txt")  # does not exist
    f3 = os.path.join(tmp_dir, "c.txt")  # exists

    Path(f1).touch()
    Path(f3).touch()

    assert os.path.isfile(f1)
    assert not os.path.exists(f2)
    assert os.path.isfile(f3)

    result = can_create_all_files([f1, f2, f3])

    assert result is True
    assert not os.path.exists(f1)
    assert not os.path.exists(f3)
    assert not os.path.exists(f2)

    shutil.rmtree(tmp_dir)


# Tests when user says no to delete if the file exists 
def test_can_create_all_files_user_says_no():
    slic.utils.ask_yes_no.ask_yes_no = lambda msg, **kwargs: False

    tmp_dir = tempfile.mkdtemp()
    f1 = os.path.join(tmp_dir, "file1.txt")  # exists
    f2 = os.path.join(tmp_dir, "file2.txt")  # doesn't exist

    Path(f1).touch()

    result = can_create_all_files([f1, f2])

    assert result is False
    assert os.path.exists(f1)  # File must still exist

    shutil.rmtree(tmp_dir)


# Directory creation test
def test_make_missing_dir_creates_folder():
    tmp_dir = tempfile.mkdtemp()
    new_folder = os.path.join(tmp_dir, "nested/dir")

    assert not os.path.exists(new_folder)
    make_missing_dir(new_folder)
    assert os.path.isdir(new_folder)

    shutil.rmtree(tmp_dir)


# glob_files()
def test_glob_files_returns_matching_files_only():
    tmp_dir = tempfile.mkdtemp()

    Path(os.path.join(tmp_dir, "a.txt")).touch()
    Path(os.path.join(tmp_dir, "l.log")).touch()
    Path(os.path.join(tmp_dir, "b.txt")).touch()
    Path(os.path.join(tmp_dir, "note.md")).touch()
    os.mkdir(os.path.join(tmp_dir, "folder"))

    result = list(glob_files(tmp_dir, "*.txt"))
    result_names = sorted([f.name for f in result])

    assert result_names == ["a.txt", "b.txt"]

    shutil.rmtree(tmp_dir)

# filter_files()
def test_filter_files_excludes_directories():
    tmp_dir = tempfile.mkdtemp()

    f1 = Path(os.path.join(tmp_dir, "x.txt"))
    f3 = Path(os.path.join(tmp_dir, "y.log"))
    f2 = Path(os.path.join(tmp_dir, "y.txt"))
    d1 = Path(os.path.join(tmp_dir, "dir"))
    f4 = Path(os.path.join(tmp_dir, "y.json"))

    f1.touch()
    f3.touch()
    f2.touch()
    d1.mkdir()
    f4.touch()

    result = filter_files([f1, f3, f2, d1, f4])
    result_names = sorted([p.name for p in result])

    assert result_names == ["x.txt", "y.json", "y.log", "y.txt"]

    shutil.rmtree(tmp_dir)