# window.py
#
# Copyright 2024 Jeffser
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.
#
# SPDX-License-Identifier: GPL-3.0-or-later
"""
Handles the main window
"""
import json, threading, os, re, base64, gettext, uuid, shutil, logging
from io import BytesIO
from PIL import Image
from pypdf import PdfReader
from datetime import datetime

import gi
gi.require_version('GtkSource', '5')
gi.require_version('GdkPixbuf', '2.0')

from gi.repository import Adw, Gtk, Gdk, GLib, GtkSource, Gio, GdkPixbuf

from . import dialogs, connection_handler
from .custom_widgets import message_widget, chat_widget, model_widget
from .internal import config_dir, data_dir, cache_dir, source_dir

logger = logging.getLogger(__name__)

@Gtk.Template(resource_path='/com/jeffser/Alpaca/window.ui')
class AlpacaWindow(Adw.ApplicationWindow):
    app_dir = os.getenv("FLATPAK_DEST")

    __gtype_name__ = 'AlpacaWindow'

    localedir = os.path.join(source_dir, 'locale')

    gettext.bindtextdomain('com.jeffser.Alpaca', localedir)
    gettext.textdomain('com.jeffser.Alpaca')
    _ = gettext.gettext

    #Variables
    ready = False #Used with welcome dialog
    attachments = {}
    header_bar = Gtk.Template.Child()

    #Override elements
    overrides_group = Gtk.Template.Child()

    #Elements
    split_view_overlay = Gtk.Template.Child()
    regenerate_button : Gtk.Button = None
    selected_chat_row : Gtk.ListBoxRow = None
    create_model_base = Gtk.Template.Child()
    create_model_name = Gtk.Template.Child()
    create_model_system = Gtk.Template.Child()
    create_model_modelfile = Gtk.Template.Child()
    tweaks_group = Gtk.Template.Child()
    preferences_dialog = Gtk.Template.Child()
    shortcut_window : Gtk.ShortcutsWindow  = Gtk.Template.Child()
    file_preview_dialog = Gtk.Template.Child()
    file_preview_text_view = Gtk.Template.Child()
    file_preview_image = Gtk.Template.Child()
    welcome_dialog = Gtk.Template.Child()
    welcome_carousel = Gtk.Template.Child()
    welcome_previous_button = Gtk.Template.Child()
    welcome_next_button = Gtk.Template.Child()
    main_overlay = Gtk.Template.Child()
    manage_models_overlay = Gtk.Template.Child()
    chat_stack = Gtk.Template.Child()
    message_text_view = Gtk.Template.Child()
    send_button = Gtk.Template.Child()
    stop_button = Gtk.Template.Child()
    attachment_container = Gtk.Template.Child()
    attachment_box = Gtk.Template.Child()
    file_filter_tar = Gtk.Template.Child()
    file_filter_gguf = Gtk.Template.Child()
    file_filter_attachments = Gtk.Template.Child()
    attachment_button = Gtk.Template.Child()
    chat_right_click_menu = Gtk.Template.Child()
    model_tag_list_box = Gtk.Template.Child()
    navigation_view_manage_models = Gtk.Template.Child()
    file_preview_open_button = Gtk.Template.Child()
    file_preview_remove_button = Gtk.Template.Child()
    secondary_menu_button = Gtk.Template.Child()
    model_searchbar = Gtk.Template.Child()
    no_results_page = Gtk.Template.Child()
    model_link_button = Gtk.Template.Child()
    launch_dialog = Gtk.Template.Child()
    launch_status = Gtk.Template.Child()
    launch_level_bar = Gtk.Template.Child()
    manage_models_dialog = Gtk.Template.Child()
    model_scroller = Gtk.Template.Child()

    chat_list_container = Gtk.Template.Child()
    chat_list_box = None
    ollama_instance = None
    model_manager = None
    add_chat_button = Gtk.Template.Child()
    instance_idle_timer = Gtk.Template.Child()

    background_switch = Gtk.Template.Child()
    remote_connection_switch = Gtk.Template.Child()
    remote_connection_entry = Gtk.Template.Child()
    remote_bearer_token_entry = Gtk.Template.Child()

    banner = Gtk.Template.Child()

    style_manager = Adw.StyleManager()

    @Gtk.Template.Callback()
    def stop_message(self, button=None):
        self.chat_list_box.get_current_chat().stop_message()

    @Gtk.Template.Callback()
    def send_message(self, button=None):
        if button and not button.get_visible():
            return
        if not self.message_text_view.get_buffer().get_text(self.message_text_view.get_buffer().get_start_iter(), self.message_text_view.get_buffer().get_end_iter(), False):
            return
        current_chat = self.chat_list_box.get_current_chat()
        if current_chat.busy == True:
            return

        self.chat_list_box.send_tab_to_top(self.chat_list_box.get_selected_row())

        current_model = self.model_manager.get_selected_model()
        if current_model is None:
            self.show_toast(_("Please select a model before chatting"), self.main_overlay)
            return
        message_id = self.generate_uuid()

        attached_images = []
        attached_files = {}
        for name, content in self.attachments.items():
            if content["type"] == 'image':
                if self.model_manager.verify_if_image_can_be_used():
                    attached_images.append(os.path.join(data_dir, "chats", current_chat.get_name(), message_id, name))
            else:
                attached_files[os.path.join(data_dir, "chats", current_chat.get_name(), message_id, name)] = content['type']
            if not os.path.exists(os.path.join(data_dir, "chats", current_chat.get_name(), message_id)):
                os.makedirs(os.path.join(data_dir, "chats", current_chat.get_name(), message_id))
            shutil.copy(content['path'], os.path.join(data_dir, "chats", current_chat.get_name(), message_id, name))
            content["button"].get_parent().remove(content["button"])
        self.attachments = {}
        self.attachment_box.set_visible(False)
        raw_message = self.message_text_view.get_buffer().get_text(self.message_text_view.get_buffer().get_start_iter(), self.message_text_view.get_buffer().get_end_iter(), False)
        current_chat.add_message(message_id, None)
        m_element = current_chat.messages[message_id]

        if len(attached_files) > 0:
            m_element.add_attachments(attached_files)
        if len(attached_images) > 0:
            m_element.add_images(attached_images)
        m_element.set_text(raw_message)
        m_element.add_footer(datetime.now())
        m_element.add_action_buttons()

        data = {
            "model": current_model,
            "messages": self.convert_history_to_ollama(current_chat),
            "options": {"temperature": self.ollama_instance.tweaks["temperature"], "seed": self.ollama_instance.tweaks["seed"]},
            "keep_alive": f"{self.ollama_instance.tweaks['keep_alive']}m",
            "stream": True
        }

        self.message_text_view.get_buffer().set_text("", 0)

        bot_id=self.generate_uuid()
        current_chat.add_message(bot_id, current_model)
        m_element_bot = current_chat.messages[bot_id]
        m_element_bot.set_text()
        threading.Thread(target=self.run_message, args=(data, m_element_bot, current_chat)).start()

    @Gtk.Template.Callback()
    def welcome_carousel_page_changed(self, carousel, index):
        logger.debug("Showing welcome carousel")
        if index == 0:
            self.welcome_previous_button.set_sensitive(False)
        else:
            self.welcome_previous_button.set_sensitive(True)
        if index == carousel.get_n_pages()-1:
            self.welcome_next_button.set_label(_("Close"))
            self.welcome_next_button.set_tooltip_text(_("Close"))
            self.welcome_next_button.set_sensitive(self.ready)
        else:
            self.welcome_next_button.set_label(_("Next"))
            self.welcome_next_button.set_tooltip_text(_("Next"))
            self.welcome_next_button.set_sensitive(True)

    @Gtk.Template.Callback()
    def welcome_previous_button_activate(self, button):
        self.welcome_carousel.scroll_to(self.welcome_carousel.get_nth_page(self.welcome_carousel.get_position()-1), True)

    @Gtk.Template.Callback()
    def welcome_next_button_activate(self, button):
        if button.get_label() == "Next":
            self.welcome_carousel.scroll_to(self.welcome_carousel.get_nth_page(self.welcome_carousel.get_position()+1), True)
        else:
            self.welcome_dialog.force_close()

    @Gtk.Template.Callback()
    def change_remote_connection(self, switcher, *_):
        logger.debug("Connection switched")
        if self.remote_connection_switch.get_active() and not self.remote_connection_entry.get_text():
            self.remote_connection_switch.set_active(False)
            return
        self.ollama_instance.remote = self.remote_connection_switch.get_active()
        if self.ollama_instance.remote:
            self.ollama_instance.stop()
        else:
            self.ollama_instance.start()
        if self.model_manager:
            self.model_manager.update_local_list()
        self.save_server_config()

    @Gtk.Template.Callback()
    def change_remote_url(self, entry):
        if entry.get_text() and not entry.get_text().startswith("http"):
            entry.set_text("http://{}".format(entry.get_text()))
            return
        if entry.get_text() and entry.get_text() != entry.get_text().rstrip('/'):
            entry.set_text(entry.get_text().rstrip('/'))
            return
        self.remote_connection_switch.set_sensitive(entry.get_text())
        logger.debug(f"Changing remote url: {self.ollama_instance.remote_url}")
        self.ollama_instance.remote_url = entry.get_text()
        if not entry.get_text():
            self.remote_connection_switch.set_active(False)
        if self.ollama_instance.remote and self.model_manager and entry.get_text():
            self.model_manager.update_local_list()
        self.save_server_config()

    @Gtk.Template.Callback()
    def change_remote_bearer_token(self, entry):
        self.ollama_instance.bearer_token = entry.get_text()
        if self.ollama_instance.remote_url and self.ollama_instance.remote and self.model_manager:
            self.model_manager.update_local_list()
        self.save_server_config()

    @Gtk.Template.Callback()
    def switch_run_on_background(self):
        logger.debug("Switching run on background")
        self.set_hide_on_close(self.background_switch.get_active())
        self.save_server_config()

    @Gtk.Template.Callback()
    def closing_app(self, user_data):
        with open(os.path.join(data_dir, "chats", "selected_chat.txt"), 'w') as f:
            f.write(self.chat_list_box.get_selected_row().chat_window.get_name())
        if self.get_hide_on_close():
            logger.info("Hiding app...")
        else:
            logger.info("Closing app...")
            self.ollama_instance.stop()
            self.get_application().quit()

    @Gtk.Template.Callback()
    def model_spin_changed(self, spin):
        value = spin.get_value()
        if spin.get_name() != "temperature":
            value = round(value)
        else:
            value = round(value, 1)
        if self.ollama_instance.tweaks[spin.get_name()] != value:
            self.ollama_instance.tweaks[spin.get_name()] = value
            self.save_server_config()

    @Gtk.Template.Callback()
    def instance_idle_timer_changed(self, spin):
        self.ollama_instance.idle_timer_delay = round(spin.get_value())
        self.save_server_config()

    @Gtk.Template.Callback()
    def create_model_start(self, button):
        name = self.create_model_name.get_text().lower().replace(":", "")
        modelfile_buffer = self.create_model_modelfile.get_buffer()
        modelfile_raw = modelfile_buffer.get_text(modelfile_buffer.get_start_iter(), modelfile_buffer.get_end_iter(), False)
        modelfile = ["FROM {}".format(self.create_model_base.get_subtitle()), "SYSTEM {}".format(self.create_model_system.get_text())]
        for line in modelfile_raw.split('\n'):
            if not line.startswith('SYSTEM') and not line.startswith('FROM'):
                modelfile.append(line)
        threading.Thread(target=self.model_manager.pull_model, kwargs={"model_name": name, "modelfile": '\n'.join(modelfile)}).start()
        self.navigation_view_manage_models.pop()

    @Gtk.Template.Callback()
    def override_changed(self, entry):
        name = entry.get_name()
        value = entry.get_text()
        if self.ollama_instance:
            if value:
                self.ollama_instance.overrides[name] = value
            elif name in self.ollama_instance.overrides:
                del self.ollama_instance.overrides[name]
            if not self.ollama_instance.remote:
                self.ollama_instance.reset()
            self.save_server_config()

    @Gtk.Template.Callback()
    def link_button_handler(self, button):
        os.system(f'xdg-open "{button.get_name()}"'.replace("{selected_chat}", self.chat_list_box.get_current_chat().get_name()))

    @Gtk.Template.Callback()
    def model_search_toggle(self, button):
        self.model_searchbar.set_search_mode(button.get_active())
        self.model_manager.pulling_list.set_visible(not button.get_active() and len(list(self.model_manager.pulling_list)) > 0)
        self.model_manager.local_list.set_visible(not button.get_active() and len(list(self.model_manager.local_list)) > 0)

    @Gtk.Template.Callback()
    def model_search_changed(self, entry):
        results = 0
        for model in list(self.model_manager.available_list):
            model.set_visible(re.search(entry.get_text(), '{} {} {} {} {}'.format(model.get_name(), model.model_title, model.model_author, model.model_description, (_('image') if model.image_recognition else '')), re.IGNORECASE))
            if model.get_visible():
                results += 1
        if entry.get_text() and results == 0:
            self.no_results_page.set_visible(True)
            self.model_scroller.set_visible(False)
        else:
            self.model_scroller.set_visible(True)
            self.no_results_page.set_visible(False)

    @Gtk.Template.Callback()
    def on_clipboard_paste(self, textview):
        logger.debug("Pasting from clipboard")
        clipboard = Gdk.Display.get_default().get_clipboard()
        clipboard.read_text_async(None, self.cb_text_received)
        clipboard.read_texture_async(None, self.cb_image_received)

    def convert_model_name(self, name:str, mode:int) -> str: # mode=0 name:tag -> Name (tag)   |   mode=1 Name (tag) -> name:tag
        try:
            if mode == 0:
                return "{} ({})".format(name.split(":")[0].replace("-", " ").title(), name.split(":")[1])
            if mode == 1:
                return "{}:{}".format(name.split(" (")[0].replace(" ", "-").lower(), name.split(" (")[1][:-1])
        except Exception as e:
            pass

    def check_alphanumeric(self, editable, text, length, position, allowed_chars):
        new_text = ''.join([char for char in text if char.isalnum() or char in allowed_chars])
        if new_text != text:
            editable.stop_emission_by_name("insert-text")

    def create_model(self, model:str, file:bool):
        modelfile_buffer = self.create_model_modelfile.get_buffer()
        modelfile_buffer.delete(modelfile_buffer.get_start_iter(), modelfile_buffer.get_end_iter())
        self.create_model_system.set_text('')
        if not file:
            response = self.ollama_instance.request("POST", "api/show", json.dumps({"name": self.convert_model_name(model, 1)}))
            if response.status_code == 200:
                data = json.loads(response.text)
                modelfile = []
                for line in data['modelfile'].split('\n'):
                    if line.startswith('SYSTEM'):
                        self.create_model_system.set_text(line[len('SYSTEM'):].strip())
                    if not line.startswith('SYSTEM') and not line.startswith('FROM') and not line.startswith('#'):
                        modelfile.append(line)
                self.create_model_name.set_text(self.convert_model_name(model, 1).split(':')[0] + "-custom")
                modelfile_buffer.insert(modelfile_buffer.get_start_iter(), '\n'.join(modelfile), len('\n'.join(modelfile).encode('utf-8')))
            else:
                ##TODO ERROR MESSAGE
                return
            self.create_model_base.set_subtitle(self.convert_model_name(model, 1))
        else:
            self.create_model_name.set_text(os.path.splitext(os.path.basename(model))[0])
            self.create_model_base.set_subtitle(model)
        self.navigation_view_manage_models.push_by_tag('model_create_page')

    def show_toast(self, message:str, overlay):
        logger.info(message)
        toast = Adw.Toast(
            title=message,
            timeout=2
        )
        overlay.add_toast(toast)

    def show_notification(self, title:str, body:str, icon:Gio.ThemedIcon=None):
        if not self.is_active():
            logger.info(f"{title}, {body}")
            notification = Gio.Notification.new(title)
            notification.set_body(body)
            if icon:
                notification.set_icon(icon)
            self.get_application().send_notification(None, notification)

    def preview_file(self, file_path, file_type, presend_name):
        logger.debug(f"Previewing file: {file_path}")
        file_path = file_path.replace("{selected_chat}", self.chat_list_box.get_current_chat().get_name())
        if not os.path.isfile(file_path):
            self.show_toast(_("Missing file"), self.main_overlay)
            return
        content = self.get_content_of_file(file_path, file_type)
        if presend_name:
            self.file_preview_remove_button.set_visible(True)
            self.file_preview_remove_button.set_name(presend_name)
        else:
            self.file_preview_remove_button.set_visible(False)
        if content:
            if file_type == 'image':
                self.file_preview_image.set_visible(True)
                self.file_preview_text_view.set_visible(False)
                image_data = base64.b64decode(content)
                loader = GdkPixbuf.PixbufLoader.new()
                loader.write(image_data)
                loader.close()
                pixbuf = loader.get_pixbuf()
                texture = Gdk.Texture.new_for_pixbuf(pixbuf)
                self.file_preview_image.set_from_paintable(texture)
                self.file_preview_image.set_size_request(240, 240)
                self.file_preview_dialog.set_title(os.path.basename(file_path))
                self.file_preview_open_button.set_name(file_path)
            else:
                self.file_preview_image.set_visible(False)
                self.file_preview_text_view.set_visible(True)
                buffer = self.file_preview_text_view.get_buffer()
                buffer.delete(buffer.get_start_iter(), buffer.get_end_iter())
                buffer.insert(buffer.get_start_iter(), content, len(content.encode('utf-8')))
                if file_type == 'youtube':
                    self.file_preview_dialog.set_title(content.split('\n')[0])
                    self.file_preview_open_button.set_name(content.split('\n')[2])
                elif file_type == 'website':
                    self.file_preview_open_button.set_name(content.split('\n')[0])
                else:
                    self.file_preview_dialog.set_title(os.path.basename(file_path))
                    self.file_preview_open_button.set_name(file_path)
            self.file_preview_dialog.present(self)

    def convert_history_to_ollama(self, chat):
        messages = []
        for message_id, message in chat.messages_to_dict().items():
            new_message = message.copy()
            if 'model' in new_message:
                del new_message['model']
            if 'date' in new_message:
                del new_message['date']
            if 'files' in message and len(message['files']) > 0:
                del new_message['files']
                new_message['content'] = ''
                for name, file_type in message['files'].items():
                    file_path = os.path.join(data_dir, "chats", chat.get_name(), message_id, name)
                    file_data = self.get_content_of_file(file_path, file_type)
                    if file_data:
                        new_message['content'] += f"```[{name}]\n{file_data}\n```"
                new_message['content'] += message['content']
            if 'images' in message and len(message['images']) > 0:
                new_message['images'] = []
                for name in message['images']:
                    file_path = os.path.join(data_dir, "chats", chat.get_name(), message_id, name)
                    image_data = self.get_content_of_file(file_path, 'image')
                    if image_data:
                        new_message['images'].append(image_data)
            messages.append(new_message)
        return messages

    def generate_chat_title(self, message, old_chat_name):
        logger.debug("Generating chat title")
        prompt = f"""
Generate a title following these rules:
    - The title should be based on the prompt at the end
    - Keep it in the same language as the prompt
    - The title needs to be less than 30 characters
    - Use only alphanumeric characters and spaces
    - Just write the title, NOTHING ELSE

```PROMPT
{message['content']}
```"""
        current_model = self.model_manager.get_selected_model()
        data = {"model": current_model, "prompt": prompt, "stream": False}
        if 'images' in message:
            data["images"] = message['images']
        response = self.ollama_instance.request("POST", "api/generate", json.dumps(data))
        if response.status_code == 200:
            new_chat_name = json.loads(response.text)["response"].strip().removeprefix("Title: ").removeprefix("title: ").strip('\'"').replace('\n', ' ').title().replace('\'S', '\'s')
            new_chat_name = new_chat_name[:50] + (new_chat_name[50:] and '...')
            self.chat_list_box.rename_chat(old_chat_name, new_chat_name)

    def save_server_config(self):
        with open(os.path.join(config_dir, "server.json"), "w+", encoding="utf-8") as f:
            data = {
                'remote_url': self.ollama_instance.remote_url,
                'remote_bearer_token': self.ollama_instance.bearer_token,
                'run_remote': self.ollama_instance.remote,
                'local_port': self.ollama_instance.local_port,
                'run_on_background': self.background_switch.get_active(),
                'model_tweaks': self.ollama_instance.tweaks,
                'ollama_overrides': self.ollama_instance.overrides,
                'idle_timer': self.ollama_instance.idle_timer_delay
            }

            json.dump(data, f, indent=6)

    def verify_connection(self):
        try:
            response = self.ollama_instance.request("GET", "api/tags")
            if response.status_code == 200:
                self.save_server_config()
                #self.update_list_local_models()
            return response.status_code == 200
        except Exception as e:
            logger.error(e)
            return False

    def on_theme_changed(self, manager, dark, buffer):
        logger.debug("Theme changed")
        if manager.get_dark():
            source_style = GtkSource.StyleSchemeManager.get_default().get_scheme('Adwaita-dark')
        else:
            source_style = GtkSource.StyleSchemeManager.get_default().get_scheme('Adwaita')
        buffer.set_style_scheme(source_style)

    def switch_send_stop_button(self, send:bool):
        self.stop_button.set_visible(not send)
        self.send_button.set_visible(send)

    def run_message(self, data:dict, message_element:message_widget.message, chat:chat_widget.chat):
        logger.debug("Running message")
        chat.busy = True
        self.chat_list_box.get_tab_by_name(chat.get_name()).spinner.set_visible(True)
        if len(data['messages']) == 1 and chat.get_name().startswith(_("New Chat")):
            threading.Thread(target=self.generate_chat_title, args=(data['messages'][0].copy(), chat.get_name())).start()

        if chat.welcome_screen:
            chat.welcome_screen.set_visible(False)
        if chat.regenerate_button:
            chat.container.remove(chat.regenerate_button)
        self.switch_send_stop_button(False)
        if self.regenerate_button:
            GLib.idle_add(self.chat_list_box.get_current_chat().remove, self.regenerate_button)
        try:
            response = self.ollama_instance.request("POST", "api/chat", json.dumps(data), lambda data, message_element=message_element: GLib.idle_add(message_element.update_message, data))
            if response.status_code != 200:
                raise Exception('Network Error')
        except Exception as e:
            chat.busy = False
            GLib.idle_add(message_element.add_action_buttons)
            GLib.idle_add(chat.show_regenerate_button, message_element)
            GLib.idle_add(self.connection_error)


    def save_history(self, chat:chat_widget.chat=None):
        logger.debug("Saving history")
        history = None
        if chat and os.path.exists(os.path.join(data_dir, "chats", "chats.json")):
            history = {'chats': {chat.get_name(): {'messages': chat.messages_to_dict()}}}
            try:
                with open(os.path.join(data_dir, "chats", "chats.json"), "r", encoding="utf-8") as f:
                    data = json.load(f)
                    for chat_tab in self.chat_list_box.tab_list:
                        if chat_tab.chat_window.get_name() != chat.get_name():
                            history['chats'][chat_tab.chat_window.get_name()] = data['chats'][chat_tab.chat_window.get_name()]
                history['chats'][chat.get_name()] = {'messages': chat.messages_to_dict()}
            except Exception as e:
                logger.error(e)
                history = None
        if not history:
            history = {'chats': {}}
            for chat_tab in self.chat_list_box.tab_list:
                history['chats'][chat_tab.chat_window.get_name()] = {'messages': chat_tab.chat_window.messages_to_dict()}

        with open(os.path.join(data_dir, "chats", "chats.json"), "w+", encoding="utf-8") as f:
            json.dump(history, f, indent=4)

    def load_history(self):
        logger.debug("Loading history")
        if os.path.exists(os.path.join(data_dir, "chats", "chats.json")):
            try:
                with open(os.path.join(data_dir, "chats", "chats.json"), "r", encoding="utf-8") as f:
                    data = json.load(f)
                    selected_chat = None
                    if len(list(data)) == 0:
                        data['chats'][_("New Chat")] = {"messages": {}}
                    if os.path.exists(os.path.join(data_dir, "chats", "selected_chat.txt")):
                        with open(os.path.join(data_dir, "chats", "selected_chat.txt"), 'r') as scf:
                            selected_chat = scf.read()
                    elif 'selected_chat' in data and data['selected_chat'] in data['chats']:
                        selected_chat = data['selected_chat']
                    if not selected_chat or selected_chat not in data['chats']:
                        selected_chat = list(data['chats'])[0]
                    if len(data['chats'][selected_chat]['messages'].keys()) > 0:
                        last_model_used = data['chats'][selected_chat]['messages'][list(data["chats"][selected_chat]["messages"])[-1]]["model"]
                        self.model_manager.change_model(last_model_used)
                    for chat_name in data['chats']:
                        self.chat_list_box.append_chat(chat_name)
                        chat_container = self.chat_list_box.get_chat_by_name(chat_name)
                        if chat_name == selected_chat:
                            self.chat_list_box.select_row(self.chat_list_box.tab_list[-1])
                        chat_container.load_chat_messages(data['chats'][chat_name]['messages'])

            except Exception as e:
                logger.error(e)
                self.chat_list_box.prepend_chat(_("New Chat"))
        else:
            self.chat_list_box.prepend_chat(_("New Chat"))


    def generate_numbered_name(self, chat_name:str, compare_list:list) -> str:
        if chat_name in compare_list:
            for i in range(len(compare_list)):
                if "." in chat_name:
                    if f"{'.'.join(chat_name.split('.')[:-1])} {i+1}.{chat_name.split('.')[-1]}" not in compare_list:
                        chat_name = f"{'.'.join(chat_name.split('.')[:-1])} {i+1}.{chat_name.split('.')[-1]}"
                        break
                else:
                    if f"{chat_name} {i+1}" not in compare_list:
                        chat_name = f"{chat_name} {i+1}"
                        break
        return chat_name

    def generate_uuid(self) -> str:
        return f"{datetime.today().strftime('%Y%m%d%H%M%S%f')}{uuid.uuid4().hex}"

    def connection_error(self):
        logger.error("Connection error")
        if self.ollama_instance.remote:
            dialogs.reconnect_remote(self)
        else:
            self.ollama_instance.reset()
            self.show_toast(_("There was an error with the local Ollama instance, so it has been reset"), self.main_overlay)

    def get_content_of_file(self, file_path, file_type):
        if not os.path.exists(file_path): return None
        if file_type == 'image':
            try:
                with Image.open(file_path) as img:
                    width, height = img.size
                    max_size = 240
                    if width > height:
                        new_width = max_size
                        new_height = int((max_size / width) * height)
                    else:
                        new_height = max_size
                        new_width = int((max_size / height) * width)
                    resized_img = img.resize((new_width, new_height), Image.LANCZOS)
                    with BytesIO() as output:
                        resized_img.save(output, format="PNG")
                        image_data = output.getvalue()
                    return base64.b64encode(image_data).decode("utf-8")
            except Exception as e:
                logger.error(e)
                self.show_toast(_("Cannot open image"), self.main_overlay)
        elif file_type == 'plain_text' or file_type == 'youtube' or file_type == 'website':
            with open(file_path, 'r', encoding="utf-8") as f:
                return f.read()
        elif file_type == 'pdf':
            reader = PdfReader(file_path)
            if len(reader.pages) == 0:
                return None
            text = ""
            for i, page in enumerate(reader.pages):
                text += f"\n- Page {i}\n{page.extract_text(extraction_mode='layout', layout_mode_space_vertically=False)}\n"
            return text

    def remove_attached_file(self, name):
        logger.debug("Removing attached file")
        button = self.attachments[name]['button']
        button.get_parent().remove(button)
        del self.attachments[name]
        if len(self.attachments) == 0:
            self.attachment_box.set_visible(False)

    def attach_file(self, file_path, file_type):
        logger.debug(f"Attaching file: {file_path}")
        file_name = self.generate_numbered_name(os.path.basename(file_path), self.attachments.keys())
        content = self.get_content_of_file(file_path, file_type)
        if content:
            button_content = Adw.ButtonContent(
                label=file_name,
                icon_name={
                    "image": "image-x-generic-symbolic",
                    "plain_text": "document-text-symbolic",
                    "pdf": "document-text-symbolic",
                    "youtube": "play-symbolic",
                    "website": "globe-symbolic"
                }[file_type]
            )
            button = Gtk.Button(
                vexpand=True,
                valign=3,
                name=file_name,
                css_classes=["flat"],
                tooltip_text=file_name,
                child=button_content
            )
            self.attachments[file_name] = {"path": file_path, "type": file_type, "content": content, "button": button}
            #button.connect("clicked", lambda button: dialogs.remove_attached_file(self, button))
            button.connect("clicked", lambda button : self.preview_file(file_path, file_type, file_name))
            self.attachment_container.append(button)
            self.attachment_box.set_visible(True)

    def chat_actions(self, action, user_data):
        chat_row = self.selected_chat_row
        chat_name = chat_row.label.get_label()
        action_name = action.get_name()
        if action_name in ('delete_chat', 'delete_current_chat'):
            dialogs.delete_chat(self, chat_name)
        elif action_name in ('duplicate_chat', 'duplicate_current_chat'):
            self.chat_list_box.duplicate_chat(chat_name)
        elif action_name in ('rename_chat', 'rename_current_chat'):
            dialogs.rename_chat(self, chat_name)
        elif action_name in ('export_chat', 'export_current_chat'):
            self.chat_list_box.export_chat(chat_name)

    def current_chat_actions(self, action, user_data):
        self.selected_chat_row = self.chat_list_box.get_selected_row()
        self.chat_actions(action, user_data)

    def cb_text_received(self, clipboard, result):
        try:
            text = clipboard.read_text_finish(result)
            #Check if text is a Youtube URL
            youtube_regex = re.compile(
                r'(https?://)?(www\.)?(youtube|youtu|youtube-nocookie)\.(com|be)/'
                r'(watch\?v=|embed/|v/|.+\?v=)?([^&=%\?]{11})')
            url_regex = re.compile(
                r'http[s]?://'
                r'(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\\(\\),]|'
                r'(?:%[0-9a-fA-F][0-9a-fA-F]))+'
                r'(?:\\:[0-9]{1,5})?'
                r'(?:/[^\\s]*)?'
            )
            if youtube_regex.match(text):
                try:
                    dialogs.youtube_caption(self, text)
                except Exception as e:
                    logger.error(e)
                    self.show_toast(_("This video is not available"), self.main_overlay)
            elif url_regex.match(text):
                dialogs.attach_website(self, text)
        except Exception as e:
            logger.error(e)

    def cb_image_received(self, clipboard, result):
        try:
            texture = clipboard.read_texture_finish(result)
            if texture:
                if self.model_manager.verify_if_image_can_be_used():
                    pixbuf = Gdk.pixbuf_get_from_texture(texture)
                    if not os.path.exists(os.path.join(cache_dir, 'tmp/images/')):
                        os.makedirs(os.path.join(cache_dir, 'tmp/images/'))
                    image_name = self.generate_numbered_name('image.png', os.listdir(os.path.join(cache_dir, os.path.join(cache_dir, 'tmp/images'))))
                    pixbuf.savev(os.path.join(cache_dir, 'tmp/images/{}'.format(image_name)), "png", [], [])
                    self.attach_file(os.path.join(cache_dir, 'tmp/images/{}'.format(image_name)), 'image')
                else:
                    self.show_toast(_("Image recognition is only available on specific models"), self.main_overlay)
        except Exception as e:
            pass

    def handle_enter_key(self):
        self.send_message()
        return True

    def on_file_drop(self, drop_target, value, x, y):
        files = value.get_files()
        for file in files:
            extension = os.path.splitext(file.get_path())[1][1:]
            if extension in ('png', 'jpeg', 'jpg', 'webp', 'gif'):
                self.attach_file(file.get_path(), 'image')
            elif extension in ('txt', 'md', 'html', 'css', 'js', 'py', 'java', 'json', 'xml'):
                self.attach_file(file.get_path(), 'plain_text')
            elif extension == 'pdf':
                self.attach_file(file.get_path(), 'pdf')

    def prepare_alpaca(self, local_port:int, remote_url:str, remote:bool, tweaks:dict, overrides:dict, bearer_token:str, idle_timer_delay:int, save:bool, show_launch_dialog:bool):
        #Show launch dialog
        if show_launch_dialog:
            GLib.idle_add(self.launch_dialog.present, self)

        #Instance
        self.launch_level_bar.set_value(0)
        self.launch_status.set_description(_('Loading instance'))
        self.ollama_instance = connection_handler.instance(local_port, remote_url, remote, tweaks, overrides, bearer_token, idle_timer_delay)

        #User Preferences
        self.launch_level_bar.set_value(1)
        self.launch_status.set_description(_('Applying user preferences'))
        for element in list(list(list(list(self.tweaks_group)[0])[1])[0]):
            if element.get_name() in self.ollama_instance.tweaks:
                element.set_value(self.ollama_instance.tweaks[element.get_name()])

        for element in list(list(list(list(self.overrides_group)[0])[1])[0]):
            if element.get_name() in self.ollama_instance.overrides:
                element.set_text(self.ollama_instance.overrides[element.get_name()])

        self.set_hide_on_close(self.background_switch.get_active())
        self.remote_connection_entry.set_text(self.ollama_instance.remote_url)
        self.remote_connection_switch.set_sensitive(self.remote_connection_entry.get_text())
        self.remote_bearer_token_entry.set_text(self.ollama_instance.bearer_token)
        self.remote_connection_switch.set_active(self.ollama_instance.remote)
        self.instance_idle_timer.set_value(self.ollama_instance.idle_timer_delay)

        #Model Manager
        self.model_manager = model_widget.model_manager_container()
        self.model_scroller.set_child(self.model_manager)
        self.launch_level_bar.set_value(2)
        self.launch_status.set_description(_('Updating list of local models'))
        self.model_manager.update_local_list()
        self.launch_level_bar.set_value(3)
        self.launch_status.set_description(_('Updating list of available models'))
        self.model_manager.update_available_list()

        #Chat History
        self.launch_level_bar.set_value(4)
        self.launch_status.set_description(_('Loading chats'))
        GLib.idle_add(self.load_history)
        self.launch_level_bar.set_value(5)

        #Close launch dialog
        if show_launch_dialog:
            GLib.idle_add(self.launch_dialog.force_close)
        #Save preferences
        if save:
            self.save_server_config()
        GLib.idle_add(self.welcome_next_button.set_sensitive, True)

    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        self.banner.set_revealed(Gio.PowerProfileMonitor.dup_default().get_power_saver_enabled())
        Gio.PowerProfileMonitor.dup_default().connect("notify::power-saver-enabled", lambda monitor, *_: self.banner.set_revealed(monitor.get_power_saver_enabled()))
        self.banner.connect('button-clicked', lambda *_: self.banner.set_revealed(False))

        message_widget.window = self
        chat_widget.window = self
        model_widget.window = self
        connection_handler.window = self

        drop_target = Gtk.DropTarget.new(Gdk.FileList, Gdk.DragAction.COPY)
        drop_target.connect('drop', self.on_file_drop)
        self.message_text_view.add_controller(drop_target)

        self.chat_list_box = chat_widget.chat_list()
        self.chat_list_container.set_child(self.chat_list_box)
        GtkSource.init()
        if not os.path.exists(os.path.join(data_dir, "chats")):
            os.makedirs(os.path.join(data_dir, "chats"))
        enter_key_controller = Gtk.EventControllerKey.new()
        enter_key_controller.connect("key-pressed", lambda controller, keyval, keycode, state: self.handle_enter_key() if keyval==Gdk.KEY_Return and not (state & Gdk.ModifierType.SHIFT_MASK) else None)
        self.message_text_view.add_controller(enter_key_controller)
        self.set_help_overlay(self.shortcut_window)
        self.get_application().set_accels_for_action("win.show-help-overlay", ['<primary>slash'])

        universal_actions = {
            'new_chat': [lambda *_: self.chat_list_box.new_chat(), ['<primary>n']],
            'clear': [lambda *_: dialogs.clear_chat(self), ['<primary>e']],
            'import_chat': [lambda *_: self.chat_list_box.import_chat(), ['<primary>i']],
            'create_model_from_existing': [lambda *_: dialogs.create_model_from_existing(self)],
            'create_model_from_file': [lambda *_: dialogs.create_model_from_file(self)],
            'create_model_from_name': [lambda *_: dialogs.create_model_from_name(self)],
            'duplicate_chat': [self.chat_actions],
            'duplicate_current_chat': [self.current_chat_actions],
            'delete_chat': [self.chat_actions],
            'delete_current_chat': [self.current_chat_actions],
            'rename_chat': [self.chat_actions],
            'rename_current_chat': [self.current_chat_actions, ['F2']],
            'export_chat': [self.chat_actions],
            'export_current_chat': [self.current_chat_actions],
            'toggle_sidebar': [lambda *_: self.split_view_overlay.set_show_sidebar(not self.split_view_overlay.get_show_sidebar()), ['F9']],
            'manage_models': [lambda *_: self.manage_models_dialog.present(self), ['<primary>m']]
        }

        for action_name, data in universal_actions.items():
            self.get_application().create_action(action_name, data[0], data[1] if len(data) > 1 else None)

        self.message_text_view.connect("paste-clipboard", self.on_clipboard_paste)
        self.file_preview_remove_button.connect('clicked', lambda button : dialogs.remove_attached_file(self, button.get_name()))
        self.attachment_button.connect("clicked", lambda button, file_filter=self.file_filter_attachments: dialogs.attach_file(self, file_filter))
        self.create_model_name.get_delegate().connect("insert-text", lambda *_: self.check_alphanumeric(*_, ['-', '.', '_']))
        self.remote_connection_entry.connect("entry-activated", lambda entry : entry.set_css_classes([]))
        self.set_focus(self.message_text_view)
        if os.path.exists(os.path.join(config_dir, "server.json")):
            try:
                with open(os.path.join(config_dir, "server.json"), "r", encoding="utf-8") as f:
                    data = json.load(f)
                    self.background_switch.set_active(data['run_on_background'])
                    if 'idle_timer' not in data:
                        data['idle_timer'] = 0
                    threading.Thread(target=self.prepare_alpaca, args=(data['local_port'], data['remote_url'], data['run_remote'], data['model_tweaks'], data['ollama_overrides'], data['remote_bearer_token'], round(data['idle_timer']), False, not data['run_remote'])).start()
            except Exception as e:
                logger.error(e)
                threading.Thread(target=self.prepare_alpaca, args=(11435, '', False, {'temperature': 0.7, 'seed': 0, 'keep_alive': 5}, {}, '', 0, True, True)).start()
        else:
            threading.Thread(target=self.prepare_alpaca, args=(11435, '', False, {'temperature': 0.7, 'seed': 0, 'keep_alive': 5}, {}, '', 0, True, False)).start()
            self.welcome_dialog.present(self)