import sys, os

import gradio as gr
import modules
from types import SimpleNamespace

from modules import script_callbacks, shared
from modules.shared import cmd_opts, opts
from webui import wrap_gradio_gpu_call

from modules.ui_components import ToolButton, FormRow, FormGroup
from modules.ui import create_override_settings_dropdown
import modules.scripts as scripts

from modules.sd_samplers import samplers_for_img2img
from modules.ui import setup_progressbar, create_sampler_and_steps_selection, ordered_ui_categories, create_output_panel

from scripts.core import vid2vid, txt2vid, utils
import traceback

def V2VArgs():
    seed = -1
    width = 1024
    height = 576
    cfg_scale = 5.5
    steps = 15
    prompt = ""
    n_prompt = "text, letters, logo, brand, close up, cropped, out of frame, worst quality, low quality, jpeg artifacts, ugly, duplicate, morbid, mutilated, extra fingers, mutated hands, poorly drawn hands, poorly drawn face, mutation, deformed, blurry, dehydrated, bad anatomy, bad proportions, extra limbs, cloned face, disfigured, gross proportions, malformed limbs, missing arms, missing legs, extra arms, extra legs, fused fingers, too many fingers, long neck"
    processing_strength = 0.85
    fix_frame_strength = 0.15
    return locals()

def T2VArgs():
    seed = -1
    width = 768
    height = 512
    cfg_scale = 5.5
    steps = 15
    prompt = ""
    n_prompt = "((blur, blurr, blurred, blurry, fuzzy, unclear, unfocus, bocca effect)), text, letters, logo, brand, close up, cropped, out of frame, worst quality, low quality, jpeg artifacts, ugly, duplicate, morbid, mutilated, extra fingers, mutated hands, poorly drawn hands, poorly drawn face, mutation, deformed, blurry, dehydrated, bad anatomy, bad proportions, extra limbs, cloned face, disfigured, gross proportions, malformed limbs, missing arms, missing legs, extra arms, extra legs, fused fingers, too many fingers, long neck"
    processing_strength = 0.75
    fix_frame_strength = 0.35
    return locals()

def setup_common_values(mode, d):
    with gr.Row():
        width = gr.Slider(label='Width', minimum=64, maximum=2048, step=64, value=d.width, interactive=True)
        height = gr.Slider(label='Height', minimum=64, maximum=2048, step=64, value=d.height, interactive=True)
    with gr.Row(elem_id=f'{mode}_prompt_toprow'):
        prompt = gr.Textbox(label='Prompt', lines=3, interactive=True, elem_id=f"{mode}_prompt", placeholder="Enter your prompt here...")
    with gr.Row(elem_id=f'{mode}_n_prompt_toprow'):
        n_prompt = gr.Textbox(label='Negative prompt', lines=3, interactive=True, elem_id=f"{mode}_n_prompt", value=d.n_prompt)
    with gr.Row():
        cfg_scale = gr.Slider(label='CFG scale', minimum=1, maximum=100, step=1, value=d.cfg_scale, interactive=True)
    with gr.Row():
        seed = gr.Number(label='Seed (this parameter controls how the first frame looks like and the color distribution of the consecutive frames as they are dependent on the first one)', value = d.seed, Interactive = True, precision=0)
    with gr.Row():
        processing_strength = gr.Slider(label="Processing strength (Step 1)", value=d.processing_strength, minimum=0, maximum=1, step=0.05, interactive=True)
        fix_frame_strength = gr.Slider(label="Fix frame strength (Step 2)", value=d.fix_frame_strength, minimum=0, maximum=1, step=0.05, interactive=True)
    with gr.Row():
        sampler_index = gr.Dropdown(label='Sampling method', elem_id=f"{mode}_sampling", choices=[x.name for x in samplers_for_img2img], value=samplers_for_img2img[0].name, type="index", interactive=True)
        steps = gr.Slider(label="Sampling steps", minimum=1, maximum=150, step=1, elem_id=f"{mode}_steps", value=d.steps, interactive=True)

    return width, height, prompt, n_prompt, cfg_scale, seed, processing_strength, fix_frame_strength, sampler_index, steps

def inputs_ui():
    v2v_args = SimpleNamespace(**V2VArgs())
    t2v_args = SimpleNamespace(**T2VArgs())
    with gr.Tabs():
        glo_sdcn_process_mode = gr.State(value='vid2vid')

        with gr.Tab('vid2vid') as tab_vid2vid:
            with gr.Row():
                gr.HTML('Input video (each frame will be used as initial image for SD and as input image to CN): *REQUIRED')
            with gr.Row():
                v2v_file = gr.File(label="Input video", interactive=True, file_count="single", file_types=["video"], elem_id="vid_to_vid_chosen_file")

            v2v_width, v2v_height, v2v_prompt, v2v_n_prompt, v2v_cfg_scale, v2v_seed, v2v_processing_strength, v2v_fix_frame_strength, v2v_sampler_index, v2v_steps = setup_common_values('vid2vid', v2v_args)
            
            with gr.Accordion("Extra settings",open=False):
              gr.HTML('# Occlusion mask params:')
              with gr.Row():
                with gr.Column(scale=1, variant='compact'):
                  v2v_occlusion_mask_blur = gr.Slider(label='Occlusion blur strength', minimum=0, maximum=10, step=0.1, value=3, interactive=True) 
                  gr.HTML('')
                  v2v_occlusion_mask_trailing = gr.Checkbox(label="Occlusion trailing", info="Reduce ghosting but adds more flickering to the video", value=True, interactive=True)
                with gr.Column(scale=1, variant='compact'):
                  v2v_occlusion_mask_flow_multiplier = gr.Slider(label='Occlusion flow multiplier', minimum=0, maximum=10, step=0.1, value=5, interactive=True) 
                  v2v_occlusion_mask_difo_multiplier = gr.Slider(label='Occlusion diff origin multiplier', minimum=0, maximum=10, step=0.1, value=2, interactive=True)
                  v2v_occlusion_mask_difs_multiplier = gr.Slider(label='Occlusion diff styled multiplier', minimum=0, maximum=10, step=0.1, value=0, interactive=True)

              with gr.Row():
                with gr.Column(scale=1, variant='compact'):
                  gr.HTML('# Step 1 params:')
                  v2v_step_1_seed = gr.Number(label='Seed', value = -1, Interactive = True, precision=0)
                  gr.HTML('<br>')
                  v2v_step_1_blend_alpha = gr.Slider(label='Warped prev frame vs Current frame blend alpha', minimum=0, maximum=1, step=0.1, value=1, interactive=True) 
                  v2v_step_1_processing_mode = gr.Radio(["Process full image then blend in occlusions", "Inpaint occlusions"], type="index", \
                                                        label="Processing mode", value="Process full image then blend in occlusions", interactive=True)
                  
                  
                with gr.Column(scale=1, variant='compact'):
                  gr.HTML('# Step 2 params:')
                  v2v_step_2_seed = gr.Number(label='Seed', value = 8888, Interactive = True, precision=0)

            with FormRow(elem_id="vid2vid_override_settings_row") as row:
                v2v_override_settings = create_override_settings_dropdown("vid2vid", row)

            with FormGroup(elem_id=f"script_container"):
                v2v_custom_inputs = scripts.scripts_img2img.setup_ui()
            
        with gr.Tab('txt2vid') as tab_txt2vid:
            with gr.Row():
                gr.HTML('Control video (each frame will be used as input image to CN): *NOT REQUIRED')
            with gr.Row():
                t2v_file = gr.File(label="Input video", interactive=True, file_count="single", file_types=["video"], elem_id="tex_to_vid_chosen_file")
                t2v_init_image = gr.Image(label="Input image", interactive=True, file_count="single", file_types=["image"], elem_id="tex_to_vid_init_image")

            t2v_width, t2v_height, t2v_prompt, t2v_n_prompt, t2v_cfg_scale, t2v_seed, t2v_processing_strength, t2v_fix_frame_strength, t2v_sampler_index, t2v_steps = setup_common_values('txt2vid', t2v_args)
            
            with gr.Row():
                t2v_length = gr.Slider(label='Length (in frames)', minimum=10, maximum=2048, step=10, value=40, interactive=True)
                t2v_fps = gr.Slider(label='Video FPS', minimum=4, maximum=64, step=4, value=12, interactive=True)

            gr.HTML('<br>')
            t2v_cn_frame_send = gr.Radio(["None", "Current generated frame", "Previous generated frame", "Current reference video frame"], type="index", \
                label="What frame should be send to CN?", value="None", interactive=True)
            
            with FormRow(elem_id="txt2vid_override_settings_row") as row:
                t2v_override_settings = create_override_settings_dropdown("txt2vid", row)

            with FormGroup(elem_id=f"script_container"):
                t2v_custom_inputs = scripts.scripts_txt2img.setup_ui()
    
    tab_vid2vid.select(fn=lambda: 'vid2vid', inputs=[], outputs=[glo_sdcn_process_mode])
    tab_txt2vid.select(fn=lambda: 'txt2vid', inputs=[], outputs=[glo_sdcn_process_mode])
         
    return locals()

def process(*args):
    msg = 'Done'
    try:    
      if args[0] == 'vid2vid':
        yield from vid2vid.start_process(*args)
      elif args[0] == 'txt2vid':
        yield from txt2vid.start_process(*args)
      else:
        msg = f"Unsupported processing mode: '{args[0]}'"
        raise Exception(msg)
    except Exception as error:
      # handle the exception
      msg = f"An exception occurred while trying to process the frame: {error}"
      print(msg)
      traceback.print_exc()
    
    yield msg, gr.Image.update(), gr.Image.update(), gr.Image.update(), gr.Image.update(), gr.Video.update(), gr.Button.update(interactive=True), gr.Button.update(interactive=False)

def stop_process(*args):
    utils.shared.is_interrupted = True
    return gr.Button.update(interactive=False)



def on_ui_tabs():
  modules.scripts.scripts_current = modules.scripts.scripts_img2img
  modules.scripts.scripts_img2img.initialize_scripts(is_img2img=True)

  with gr.Blocks(analytics_enabled=False) as sdcnanim_interface:
    components = {}
    
    #dv = SimpleNamespace(**T2VOutputArgs())
    with gr.Row(elem_id='sdcn-core').style(equal_height=False, variant='compact'):
      with gr.Column(scale=1, variant='panel'):
        #with gr.Tabs():
        components = inputs_ui()
          
        with gr.Accordion("Export settings", open=False):
          export_settings_button = gr.Button('Export', elem_id=f"sdcn_export_settings_button")
          export_setting_json = gr.Code(value='')


      with gr.Column(scale=1, variant='compact'):
        with gr.Row(variant='compact'):
          run_button = gr.Button('Generate', elem_id=f"sdcn_anim_generate", variant='primary')
          stop_button = gr.Button('Interrupt', elem_id=f"sdcn_anim_interrupt", variant='primary', interactive=False)
        
        save_frames_check = gr.Checkbox(label="Save frames into a folder nearby a video (check it before running the generation if you also want to save frames separately)", value=True, interactive=True)
        gr.HTML('<br>')

        with gr.Column(variant="panel"):
          sp_progress = gr.HTML(elem_id="sp_progress", value="")
          
          with gr.Row(variant='compact'):
            img_preview_curr_frame = gr.Image(label='Current frame', elem_id=f"img_preview_curr_frame", type='pil').style(height=240)
            img_preview_curr_occl = gr.Image(label='Current occlusion', elem_id=f"img_preview_curr_occl", type='pil').style(height=240)
          with gr.Row(variant='compact'):
            img_preview_prev_warp = gr.Image(label='Previous frame warped', elem_id=f"img_preview_curr_frame", type='pil').style(height=240)
            img_preview_processed = gr.Image(label='Processed', elem_id=f"img_preview_processed", type='pil').style(height=240)

          video_preview = gr.Video(interactive=False)
        
        with gr.Row(variant='compact'):
          dummy_component = gr.Label(visible=False)

      components['glo_save_frames_check'] = save_frames_check
      
      # Define parameters for the action methods.
      utils.shared.v2v_custom_inputs_size = len(components['v2v_custom_inputs'])
      utils.shared.t2v_custom_inputs_size = len(components['t2v_custom_inputs'])
      #print('v2v_custom_inputs', len(components['v2v_custom_inputs']), components['v2v_custom_inputs'])
      #print('t2v_custom_inputs', len(components['t2v_custom_inputs']), components['t2v_custom_inputs'])
      method_inputs = [components[name] for name in utils.get_component_names()] + components['v2v_custom_inputs'] + components['t2v_custom_inputs']

      method_outputs = [
        sp_progress,
        img_preview_curr_frame,
        img_preview_curr_occl,
        img_preview_prev_warp,
        img_preview_processed,
        video_preview,
        run_button,
        stop_button,
      ]

      run_button.click(
        fn=process, #wrap_gradio_gpu_call(start_process, extra_outputs=[None, '', '']), 
        inputs=method_inputs,
        outputs=method_outputs,
        show_progress=True,
      )

      stop_button.click(
        fn=stop_process,
        outputs=[stop_button],
        show_progress=False
      )

      export_settings_button.click(
        fn=utils.export_settings,
        inputs=method_inputs,
        outputs=[export_setting_json],
        show_progress=False
      )

    modules.scripts.scripts_current = None

    # define queue - required for generators
    sdcnanim_interface.queue(concurrency_count=1)
  return [(sdcnanim_interface, "SD-CN-Animation", "sd_cn_animation_interface")]


script_callbacks.on_ui_tabs(on_ui_tabs)