import extensions
import modules.shared as shared
import gradio as gr

extension_state = {}
available_extensions = []

def load_extensions():
    global extension_state
    for i,ext in enumerate(shared.args.extensions):
        if ext in available_extensions:
            print(f'Loading the extension "{ext}"... ', end='')
            ext_string = f"extensions.{ext}.script"
            exec(f"import {ext_string}")
            extension_state[ext] = [True, i]
            print(f'Ok.')

def apply_extensions(text, typ):
    for ext in sorted(extension_state, key=lambda x : extension_state[x][1]):
        if extension_state[ext][0] == True:
            ext_string = f"extensions.{ext}.script"
            if typ == "input" and hasattr(eval(ext_string), "input_modifier"):
                text = eval(f"{ext_string}.input_modifier(text)")
            elif typ == "output" and hasattr(eval(ext_string), "output_modifier"):
                text = eval(f"{ext_string}.output_modifier(text)")
            elif typ == "bot_prefix" and hasattr(eval(ext_string), "bot_prefix_modifier"):
                text = eval(f"{ext_string}.bot_prefix_modifier(text)")
    return text

def update_extensions_parameters(*kwargs):
    i = 0
    for ext in sorted(extension_state, key=lambda x : extension_state[x][1]):
        if extension_state[ext][0] == True:
            params = eval(f"extensions.{ext}.script.params")
            for param in params:
                if len(kwargs) >= i+1:
                    params[param] = eval(f"kwargs[{i}]")
                    i += 1

def get_params(name):
    return eval(f"extensions.{name}.script.params")

def create_extensions_block():
    extensions_ui_elements = []
    default_values = []
    if not (shared.args.chat or shared.args.cai_chat):
        gr.Markdown('## Extensions parameters')
    for ext in sorted(extension_state, key=lambda x : extension_state[x][1]):
        if extension_state[ext][0] == True:
            params = get_params(ext)
            for param in params:
                _id = f"{ext}-{param}"
                default_value = shared.settings[_id] if _id in shared.settings else params[param]
                default_values.append(default_value)
                if type(params[param]) == str:
                    extensions_ui_elements.append(gr.Textbox(value=default_value, label=f"{ext}-{param}"))
                elif type(params[param]) in [int, float]:
                    extensions_ui_elements.append(gr.Number(value=default_value, label=f"{ext}-{param}"))
                elif type(params[param]) == bool:
                    extensions_ui_elements.append(gr.Checkbox(value=default_value, label=f"{ext}-{param}"))

    update_extensions_parameters(*default_values)
    btn_extensions = gr.Button("Apply")
    btn_extensions.click(update_extensions_parameters, [*extensions_ui_elements], [])