#!/usr/bin/env python3
"""Private transcript provider matching legacy Pidgin's accessible hierarchy."""
import ctypes
import os
import sys

import gi

gi.require_version("Gtk", "3.0")
gi.require_version("Atk", "1.0")
gi.require_version("GdkX11", "3.0")
from gi.repository import Atk, GdkX11, GLib, Gtk

if ctypes.CDLL(None).prctl(15, sys.argv[1].encode(), 0, 0, 0) != 0:
    raise RuntimeError("Cannot set fixture process identity")

chatWindow = Gtk.Window(title="Conversation fixture")
notebook = Gtk.Notebook()
transcript = Gtk.TextView(editable=False)
scroll = Gtk.ScrolledWindow()
scroll.add(transcript)
notebook.append_page(scroll, Gtk.Label(label="Conversation"))
chatWindow.add(notebook)
chatWindow.show_all()
buffer = transcript.get_buffer()
typingTag = buffer.create_tag("typing", scale=0.8)
weightTag = buffer.create_tag("typing-weight", weight=300)

foreground = Gtk.Window(title="Foreground fixture")
box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
editor = Gtk.Entry()
marker = Gtk.Label(label="Marker")
marker.get_accessible().set_role(Atk.Role.ALERT)
box.add(editor)
box.add(marker)
foreground.add(box)
foreground.show_all()
pendingInput = ""


def receive_command(source, condition):
    global pendingInput
    content = os.read(sys.stdin.fileno(), 4096)
    if not content:
        Gtk.main_quit()
        return False
    pendingInput += content.decode()
    while "\n" in pendingInput:
        command, pendingInput = pendingInput.split("\n", 1)
        if command == "message":
            buffer.insert(buffer.get_end_iter(), "Username: Hello\n")
        elif command == "typing":
            buffer.insert_with_tags(buffer.get_end_iter(), "Username is typing\n", typingTag)
        elif command == "typing-weight":
            buffer.insert_with_tags(buffer.get_end_iter(), "Username is typing\n", weightTag)
        elif command == "edit":
            editor.set_text("Typed input")
        elif command == "barrier":
            marker.set_text("Messaging barrier")
        elif command == "destroy":
            transcript.destroy()
        elif command == "quit":
            Gtk.main_quit()
            return False
    return True


GLib.io_add_watch(sys.stdin, GLib.IO_IN | GLib.IO_HUP, receive_command)
GLib.idle_add(lambda: print("ready", GdkX11.X11Window.get_xid(foreground.get_window()), flush=True) or False)
Gtk.main()