# Copyright 2022 (c) Anna Schumaker.
"""Set up GObject Introspection, and custom styling, and icons."""
import pathlib
import sys
import sqlite3
import gi
import xdg.BaseDirectory

gi.require_version("Pango", "1.0")
gi.require_version("Gdk", "4.0")
gi.require_version("Gtk", "4.0")
gi.require_version("Adw", "1")
gi.require_version("Gst", "1.0")

gi.importlib.import_module("gi.repository.Gio")
gi.importlib.import_module("gi.repository.Gtk")
gi.importlib.import_module("gi.repository.Gst").init(sys.argv)

DEBUG_STR = "-debug" if __debug__ else ""
APPLICATION_ID = f"com.nowheycreamery.emmental{DEBUG_STR}"

CSS_FILE = pathlib.Path(__file__).parent / "emmental.css"
CSS_PRIORITY = gi.repository.Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION
CSS_PROVIDER = gi.repository.Gtk.CssProvider()
CSS_PROVIDER.load_from_path(str(CSS_FILE))

CACHE_DIR = pathlib.Path(xdg.BaseDirectory.save_cache_path("emmental"))
CACHE_DIR = CACHE_DIR / DEBUG_STR.lstrip("-")

DATA_DIR = pathlib.Path(xdg.BaseDirectory.save_data_path("emmental"))

RESOURCE_PATH = "/com/nowheycreamery/emmental"
RESOURCE_ICONS = f"{RESOURCE_PATH}/icons/scalable/apps"
RESOURCE_FILE = pathlib.Path(__file__).parent.parent / "emmental.gresource"
RESOURCE = gi.repository.Gio.Resource.load(str(RESOURCE_FILE))
gi.repository.Gio.resources_register(RESOURCE)


def add_style():
    """Add our stylesheet to the default display."""
    style = gi.repository.Gtk.StyleContext
    style.add_provider_for_display(gi.repository.Gdk.Display.get_default(),
                                   CSS_PROVIDER, CSS_PRIORITY)


def __version_string(subsystem, major, minor, micro):
    return f"  ⋅ {subsystem} {major}.{minor}.{micro}"


def env_string() -> str:
    """Return a string with the version numbers of our dependencies."""
    gst = gi.repository.Gst.version()
    strs = [__version_string("Python", sys.version_info.major,
                             sys.version_info.minor, sys.version_info.micro),
            __version_string("Gtk", gi.repository.Gtk.MAJOR_VERSION,
                             gi.repository.Gtk.MINOR_VERSION,
                             gi.repository.Gtk.MICRO_VERSION),
            __version_string("Libadwaita", gi.repository.Adw.MAJOR_VERSION,
                             gi.repository.Adw.MINOR_VERSION,
                             gi.repository.Adw.MICRO_VERSION),
            __version_string("GStreamer", gst.major, gst.minor, gst.micro),
            __version_string("Pango", gi.repository.Pango.VERSION_MAJOR,
                             gi.repository.Pango.VERSION_MINOR,
                             gi.repository.Pango.VERSION_MICRO),
            __version_string("SQLite", sqlite3.sqlite_version_info[0],
                             sqlite3.sqlite_version_info[1],
                             sqlite3.sqlite_version_info[2])]
    return "\n".join(strs)


def print_env() -> None:
    """Print the environment versions to stdout."""
    print(env_string())