import json
import pytest

from pathlib import Path

from transpose import Transpose, version, DEFAULT_CACHE_FILENAME
from transpose.exceptions import TransposeError

from .utils import STORE_DIR, TARGET_DIR, setup_env


@setup_env()
def test_init():
    t = Transpose(
        target_path=TARGET_DIR,
        store_path=STORE_DIR,
    )
    assert t.cache_filename == ".transpose.json"
    assert t.cache_path == Path(TARGET_DIR).joinpath(".transpose.json")

    t = Transpose(
        target_path=TARGET_DIR, store_path=STORE_DIR, cache_filename=".transpose.txt"
    )
    assert t.cache_filename == ".transpose.txt"
    assert t.cache_path == Path(TARGET_DIR).joinpath(".transpose.txt")


@setup_env()
def test_apply():
    store_path = Path(STORE_DIR)
    target_path = Path(TARGET_DIR)
    store_path.rmdir()
    target_path.rename(store_path)

    t = Transpose(
        target_path=STORE_DIR,
        store_path=STORE_DIR,
    )
    t.apply()

    assert store_path.is_dir() and not store_path.is_symlink()
    assert target_path.is_dir() and target_path.is_symlink()


@setup_env()
def test_store_restore():
    t = Transpose(
        target_path=TARGET_DIR,
        store_path=STORE_DIR,
    )
    t.store("TestStore")

    target_path = Path(TARGET_DIR)
    store_path = Path(STORE_DIR).joinpath("TestStore")

    assert store_path.is_dir() and not store_path.is_symlink()
    assert target_path.is_dir() and target_path.is_symlink()
    assert t.cache_path.is_file()

    t = Transpose(
        target_path=str(store_path),
        store_path=STORE_DIR,
    )
    t.restore()

    assert not store_path.exists()
    assert target_path.is_dir() and not target_path.is_symlink()
    assert not t.cache_path.exists()