# Copyright (c) ModelScope Contributors. All rights reserved.
import gradio as gr
import psutil
import subprocess
import sys
from packaging import version
from typing import Type

from swift.utils import get_logger
from ..base import BaseUI
from ..llm_infer import Runtime

logger = get_logger()


class RolloutRuntime(Runtime):

    group = 'llm_grpo'

    cmd = 'rollout'

    locale_dict = {
        'rollout_runtime_tab': {
            'label': {
                'zh': '运行时',
                'en': 'Runtime'
            },
        },
        'rollout_running_cmd': {
            'label': {
                'zh': '运行命令',
                'en': 'Command line'
            },
            'info': {
                'zh': '执行的实际命令',
                'en': 'The actual command'
            }
        },
        'rollout_show_log': {
            'value': {
                'zh': '展示rollout状态',
                'en': 'Show running status'
            },
        },
        'rollout_stop_show_log': {
            'value': {
                'zh': '停止展示',
                'en': 'Stop showing running status'
            },
        },
        'rollout_log': {
            'label': {
                'zh': '日志输出',
                'en': 'Logging content'
            },
            'info': {
                'zh': '如果日志无更新请再次点击"展示rollout状态"',
                'en': 'Please press "Show running status" if the log content is not updating'
            }
        },
        'rollout_running_tasks': {
            'label': {
                'zh': '运行中rollout',
                'en': 'Running rollouts'
            },
            'info': {
                'zh': '所有的swift rollout命令启动的任务',
                'en': 'Started by swift rollout'
            }
        },
        'rollout_refresh_tasks': {
            'value': {
                'zh': '找回rollout',
                'en': 'Find rollout'
            },
        },
        'rollout_kill_task': {
            'value': {
                'zh': '杀死rollout',
                'en': 'Kill running task'
            },
        },
    }

    @classmethod
    def do_build_ui(cls, base_tab: Type['BaseUI']):
        with gr.Accordion(elem_id='rollout_runtime_tab', open=False, visible=True):
            with gr.Blocks():
                with gr.Row(equal_height=True):
                    gr.Dropdown(elem_id='rollout_running_tasks', scale=10, allow_custom_value=True)
                with gr.Row(equal_height=True):
                    gr.Button(elem_id='rollout_refresh_tasks', scale=1, variant='primary')
                    gr.Button(elem_id='rollout_show_log', scale=1, variant='primary')
                    gr.Button(elem_id='rollout_stop_show_log', scale=1)
                    gr.Button(elem_id='rollout_kill_task', scale=1)
                with gr.Row():
                    gr.Textbox(elem_id='rollout_log', lines=6, visible=False)

                concurrency_limit = {}
                if version.parse(gr.__version__) >= version.parse('4.0.0'):
                    concurrency_limit = {'concurrency_limit': 5}
                base_tab.element('rollout_show_log').click(cls.update_log, [], [cls.element('rollout_log')]).then(
                    cls.wait, [base_tab.element('rollout_running_tasks')], [cls.element('rollout_log')],
                    **concurrency_limit)

                base_tab.element('rollout_stop_show_log').click(cls.break_log_event,
                                                                [cls.element('rollout_running_tasks')], [])

                base_tab.element('rollout_refresh_tasks').click(
                    cls.refresh_tasks,
                    [base_tab.element('rollout_running_tasks')],
                    [base_tab.element('rollout_running_tasks')],
                )

    @classmethod
    def kill_task(cls, task):
        if task:
            pid, all_args = cls.parse_info_from_cmdline(task)
            log_file = all_args['log_file']
            parent_process = psutil.Process(int(pid))
            children = parent_process.children(recursive=True)
            commands = []
            if sys.platform == 'win32':
                commands.append(['taskkill', '/f', '/t', '/pid', pid])
                for child in children:
                    commands.append(['taskkill', '/f', '/t', '/pid', f'{str(child.pid)}'])
            else:
                commands.append(['pkill', '-9', '-f', log_file])
                for child in children:
                    commands.append(['kill', '-9', f'{str(child.pid)}'])
            for cmd in commands:
                try:
                    result = subprocess.run(cmd, capture_output=True, text=True)
                    assert result.returncode == 0
                except Exception as e:
                    raise e
            cls.break_log_event(task)
        return [cls.refresh_tasks()] + [gr.update(value=None)]
