"""Host API required for Work Files.
# TODO @iLLiCiT implement functions:
    has_unsaved_changes
"""

from openpype.pipeline import (
    HOST_WORKFILE_EXTENSIONS,
    legacy_io,
)
from .lib import (
    execute_george,
    execute_george_through_file
)
from .pipeline import save_current_workfile_context


def open_file(filepath):
    """Open the scene file in Blender."""
    george_script = "tv_LoadProject '\"'\"{}\"'\"'".format(
        filepath.replace("\\", "/")
    )
    return execute_george_through_file(george_script)


def save_file(filepath):
    """Save the open scene file."""
    # Store context to workfile before save
    context = {
        "project": legacy_io.Session["AVALON_PROJECT"],
        "asset": legacy_io.Session["AVALON_ASSET"],
        "task": legacy_io.Session["AVALON_TASK"]
    }
    save_current_workfile_context(context)

    # Execute george script to save workfile.
    george_script = "tv_SaveProject {}".format(filepath.replace("\\", "/"))
    return execute_george(george_script)


def current_file():
    """Return the path of the open scene file."""
    george_script = "tv_GetProjectName"
    return execute_george(george_script)


def has_unsaved_changes():
    """Does the open scene file have unsaved changes?"""
    return False


def file_extensions():
    """Return the supported file extensions for Blender scene files."""
    return HOST_WORKFILE_EXTENSIONS["tvpaint"]


def work_root(session):
    """Return the default root to browse for work files."""
    return session["AVALON_WORKDIR"]