import os
import threading
import time

from modules import devices
from modules.paths import script_path
import signal
import threading
import modules.paths
import modules.codeformer_model as codeformer
import modules.esrgan_model as esrgan
import modules.bsrgan_model as bsrgan
import modules.extras
import modules.face_restoration
import modules.gfpgan_model as gfpgan
import modules.img2img
import modules.ldsr_model as ldsr
import modules.lowvram
import modules.realesrgan_model as realesrgan
import modules.scripts
import modules.sd_hijack
import modules.sd_models
import modules.shared as shared
import modules.swinir_model as swinir
import modules.txt2img
import modules.ui
from modules import modelloader
from modules.paths import script_path
from modules.shared import cmd_opts

modelloader.cleanup_models()
modules.sd_models.setup_model(cmd_opts.ckpt_dir)
codeformer.setup_model(cmd_opts.codeformer_models_path)
gfpgan.setup_model(cmd_opts.gfpgan_models_path)
shared.face_restorers.append(modules.face_restoration.FaceRestoration())
modelloader.load_upscalers()
queue_lock = threading.Lock()


def wrap_queued_call(func):
    def f(*args, **kwargs):
        with queue_lock:
            res = func(*args, **kwargs)

        return res

    return f


def wrap_gradio_gpu_call(func):
    def f(*args, **kwargs):
        devices.torch_gc()

        shared.state.sampling_step = 0
        shared.state.job_count = -1
        shared.state.job_no = 0
        shared.state.job_timestamp = shared.state.get_job_timestamp()
        shared.state.current_latent = None
        shared.state.current_image = None
        shared.state.current_image_sampling_step = 0
        shared.state.interrupted = False

        with queue_lock:
            res = func(*args, **kwargs)

        shared.state.job = ""
        shared.state.job_count = 0

        devices.torch_gc()

        return res

    return modules.ui.wrap_gradio_call(f)


modules.scripts.load_scripts(os.path.join(script_path, "scripts"))

shared.sd_model = modules.sd_models.load_model()
shared.opts.onchange("sd_model_checkpoint", wrap_queued_call(lambda: modules.sd_models.reload_model_weights(shared.sd_model)))


def webui():
    # make the program just exit at ctrl+c without waiting for anything
    def sigint_handler(sig, frame):
        print(f'Interrupted with signal {sig} in {frame}')
        os._exit(0)

    signal.signal(signal.SIGINT, sigint_handler)

    while 1:

      demo = modules.ui.create_ui(
          txt2img=wrap_gradio_gpu_call(modules.txt2img.txt2img),
          img2img=wrap_gradio_gpu_call(modules.img2img.img2img),
          run_extras=wrap_gradio_gpu_call(modules.extras.run_extras),
          run_pnginfo=modules.extras.run_pnginfo,
          run_modelmerger=modules.extras.run_modelmerger
      )


      demo.launch(
          share=cmd_opts.share,
          server_name="0.0.0.0" if cmd_opts.listen else None,
          server_port=cmd_opts.port,
          debug=cmd_opts.gradio_debug,
          auth=[tuple(cred.split(':')) for cred in cmd_opts.gradio_auth.strip('"').split(',')] if cmd_opts.gradio_auth else None,
          inbrowser=cmd_opts.autolaunch,
          prevent_thread_lock=True
      )

      while 1:
        time.sleep(0.5)
        if getattr(demo,'do_restart',False):
          time.sleep(0.5)
          demo.close()
          time.sleep(0.5)
          break

      print('Reloading Scripts')
      modules.scripts.reload_scripts(os.path.join(script_path, "scripts"))
      print('Restarting Gradio')


if __name__ == "__main__":
    webui()