MPV script to translate current line of subtitle

subtranslate.lua

-- Simple mpv script to translate subtitle using crow (online) or sdcv (offline) dictionaries.

-- INSTALLATION:
-- To install it, first install crow (https://crow-translate.github.io) and/or sdcv (http://dushistov.github.io/sdcv/) on your marchine with your favorite dicts and then,
-- copy this file to '~/.config/mpv/scripts/' (Linux) or '%AppData%\mpv\scripts\' (Windows).
-- sdcv help:
-- you can download offline dicts from http://download.huzheng.org/Quick/ (or anywhere else) and copy extracted dic folder to '~/.stardict/dic/'

-- CONFIGURATION:
local config = {
    auto_start = false, -- false means this app need to start via key_binding. true means this app starts automatickly when video pauses.
    key_binding = 'CTRL+SPACE', -- key binding to manual start this app.
    dictionary = 'crow', -- one of 'sdcv', 'crow'.
    crow_options = { -- no need to care if you are using sdcv.
        source_language = 'en', -- check crow cli app for more options.
        target_language = 'fa' -- check crow cli app for more options.
    },
    sdvc_options = { -- no need to care if you are using crow.
        dictionary_name = 'quick_eng-persian-e2009', -- sdcv dictionary (need to be installed in '~/.stardict/dic/' or '%AppData%\stardict\dic\' on your marchine and should be accessable by sdcv). Tip: you can download mentioned dict from http://download.huzheng.org/Quick
    },
}

-- USAGE:
-- To use it, when subtitle is showing something just press CTRL+SPACE key and select your favorite
-- part of visibled subtitle with CTRL+ARROW_KEYS and hit CTRL+ENTER to translate.




local utils = require 'mp.utils'

local ass = {
	start = mp.get_property_osd('osd-ass-cc/0')..'{\\a2}',
	stop = mp.get_property_osd('osd-ass-cc/1'),
	color = '{\\1c&H00CCFF&}',
	white = '{\\1c&HFFFFFF&}'
}

function split (input)
    local t = {}
    for _str in string.gmatch(input, '([^'..'\n'..']+)') do
        for str in string.gmatch(_str, '([^'..' '..']+)') do
            local replaced_str = str:gsub('[^a-zA-Z0-9_-\\ \']', '')
            table.insert(t, replaced_str)
        end
    end
    return t
end

function length(input)
    local count = 0
    for _ in pairs(input) do count = count + 1 end
    return count
end

function show(str)
    mp.osd_message(str, 9999)
end

function clear()
    mp.osd_message('')
end

function _draw(input, highlighted, translated)

    local result = ''
    if highlighted == nil then
        result = result..ass.color..input..ass.white
    else
        result = result..ass.white..input:gsub(highlighted, ass.color..highlighted..ass.white)
    end
    clear()
    show(ass.start..translated..'\n---------------------------\n'..result..ass.stop)
end

function _translate(input)
    local ret = ''
    if config.dictionary == 'sdcv' then
        local script = { args = {'sdcv' ,'-n', '-u', config.sdvc_options.dictionary_name, input } }
        local result = utils.subprocess(script)
        local i = 1
        for str in string.gmatch(result.stdout:gsub('<BR>', '\n'), '([^'..'\n'..']+)') do
            if i > 2 then
                ret = ret..str..' \n'
            end
            i = i + 1
        end
        ret = ret:sub(1, -2)
        ret = ret..'،'
    else
        local script = { args = { 'crow', '-l', config.crow_options.source_language, '-t', config.crow_options.target_language, '-b', input } }
        local result = utils.subprocess(script)
        ret = result.stdout:sub(1, -2)
    end
    return ret
end

function _get_range(arr, start_index, end_index)
    local ret = ''
    for k, v in pairs(arr) do
        if k == start_index then
            ret = v
        elseif (k > start_index and k <= end_index) then
            ret = ret..' '..v
        end
    end
    return ret
end

local selection_start = 0
local selection_end = 0
local translated = nil
local is_showing = false
local sub = ''
local parsed_sub = {}
local sub_length = 0

function auto_draw()
    local highlighted = _get_range(parsed_sub, selection_start, selection_end)

    if translated == nil then
        _draw(sub, highlighted, 'Press CTRL+ENTER to translate.')
    else
        _draw(sub, highlighted, translated)
    end
end


function start()
    mp.set_property_bool('pause', true)
    mp.add_timeout(0.1, function ()
        clear()
        mp.set_property_bool('sub-visibility', false)

        is_showing = true
        selection_start = 1
        selection_end = 1
        sub = mp.get_property('sub-text')
        parsed_sub = split(sub)
        sub_length = length(parsed_sub)
        translated = nil
        auto_draw()
        mp.add_key_binding('CTRL+LEFT', 'move_prev_1', move_prev, 'repeatable')
        mp.add_key_binding('LEFT', 'move_prev_2', move_prev, 'repeatable')
        mp.add_key_binding('CTRL+UP', 'move_prev_3', move_prev, 'repeatable')
        mp.add_key_binding('UP', 'move_prev_4', move_prev, 'repeatable')
        mp.add_key_binding('SHIFT+LEFT', 'add_prev_1', add_prev, 'repeatable')
        mp.add_key_binding('SHIFT+UP', 'add_prev_2', add_prev, 'repeatable')
        mp.add_key_binding('CTRL+RIGHT', 'move_next_1', move_next, 'repeatable')
        mp.add_key_binding('RIGHT', 'move_next_2', move_next, 'repeatable')
        mp.add_key_binding('CTRL+DOWN', 'move_next_3', move_next, 'repeatable')
        mp.add_key_binding('DOWN', 'move_next_4', move_next, 'repeatable')
        mp.add_key_binding('SHIFT+RIGHT', 'add_next_1', add_next, 'repeatable')
        mp.add_key_binding('SHIFT+DOWN', 'add_next_2', add_next, 'repeatable')
        mp.add_key_binding('CTRL+ENTER', 'translate_1', translate)
        mp.add_key_binding('ENTER', 'translate_2', translate)
        mp.add_key_binding('SHIFT+ENTER', 'translate_3', translate)
        mp.add_key_binding('CTRL+ESC', 'stop_1', stop)
        mp.add_key_binding('ESC', 'stop_2', stop)
        mp.add_key_binding('SHIFT+ESC', 'stop_3', stop)
    end)
end

function stop()
    clear()
    mp.set_property_bool('sub-visibility', true)
    mp.remove_key_binding('move_prev_1')
    mp.remove_key_binding('move_prev_2')
    mp.remove_key_binding('move_prev_3')
    mp.remove_key_binding('move_prev_4')
    mp.remove_key_binding('add_prev_1')
    mp.remove_key_binding('add_prev_2')
    mp.remove_key_binding('move_next_1')
    mp.remove_key_binding('move_next_2')
    mp.remove_key_binding('move_next_3')
    mp.remove_key_binding('move_next_4')
    mp.remove_key_binding('add_next_1')
    mp.remove_key_binding('add_next_2')
    mp.remove_key_binding('translate_1')
    mp.remove_key_binding('translate_2')
    mp.remove_key_binding('translate_3')
    mp.remove_key_binding('stop_1')
    mp.remove_key_binding('stop_2')
    mp.remove_key_binding('stop_3')
    is_showing = false 
 end

function move_next()
    if is_showing == false then
        return
    end
    selection_start = selection_start + 1
    selection_end = selection_start
    if selection_start > sub_length then
        selection_start = 1
        selection_end = 1
    end
    translated = nil
    auto_draw()
end
function add_next()
    if is_showing == false then
        return
    end
    selection_end = selection_end + 1
    if selection_end > sub_length then
        selection_end = sub_length
    end
    translated = nil
    auto_draw()
end
function move_prev()
    if is_showing == false then
        return
    end
    selection_start = selection_end - 1
    selection_end = selection_start
    if selection_start < 1 then
        selection_start = sub_length
        selection_end = sub_length
    end
    translated = nil
    auto_draw()
end
function add_prev()
    if is_showing == false then
        return
    end
    selection_end = selection_end - 1
    if selection_end < selection_start then
        selection_end = selection_start
    end
    translated = nil
    auto_draw()
end
function translate()
    local highlighted = _get_range(parsed_sub, selection_start, selection_end)

    if config.dictionary == 'sdcv' then
        translated = _translate(highlighted)
    else
        local waiting_text = 'Translating...'
        _draw(sub, highlighted, waiting_text)
        translated = _translate(highlighted)
    end
    _draw(sub, highlighted, translated)
end

function on_pause_change(name, value)
    if value == false then
        stop()
    elseif value == true and config.auto_start == true then
        start()
    end
end

mp.observe_property('pause', 'bool', on_pause_change)
mp.add_key_binding(config.key_binding, 'start', start)

Hello,
I can't get it to work. I installed crow, changed the .lua to my language and script does not work. It shows up, but does not output anything after displaying "translating" message. Do I need to change anything in crow? (I've never used it before). I'm using windows, when I was trying to look up codes using CLI I found out that cli usage for windows is kinda broken, so I suspect that's the reason why it is not working.
crow-translate/crow-translate#296
This is what I found, so it probably needs "| more"? But I don't know how to do it, I do not know how to code or anything, my "skills" end on cmd commands like cd, ping, ipconfig xd.
I tried to redneck this:

local script = { args = { 'crow', '-l', config.crow_options.source_language, '-t', config.crow_options.target_language, '-b', input, '| more' } }

but surprise surprise, it did not work.
send help