-------------------------------------------------
-- Run Shell for Awesome Window Manager
-- More details could be found here:
-- https://github.com/streetturtle/awesome-wm-widgets/tree/master/run-shell

-- @author Pavel Makhov
-- @copyright 2018 Pavel Makhov
-- @copyright 2019 Pavel Makhov
-------------------------------------------------

local awful = require("awful")
local gfs = require("gears.filesystem")
local wibox = require("wibox")
local gears = require("gears")
local naughty = require("naughty")
local completion = require("awful.completion")

local run_shell = awful.widget.prompt()

local widget = {}

function widget.new()
    local widget_instance = {
        _cached_wiboxes = {},
        _cmd_pixelate = [[sh -c 'ffmpeg -loglevel panic -f x11grab -video_size 1920x1060 -y -i :0.0+%s,20 -vf ]]
            .. [[frei0r=pixeliz0r -vframes 1 /tmp/i3lock-%s.png ; echo done']],
        _cmd_blur = [[sh -c 'ffmpeg -loglevel panic -f x11grab -video_size 1920x1060 -y -i :0.0+%s,20 ]]
            .. [[-filter_complex "boxblur=9" -vframes 1 /tmp/i3lock-%s.png ; echo done']]
    }

    function widget_instance:_create_wibox()
        local w = wibox {
            visible = false,
            ontop = true,
            height = mouse.screen.geometry.height,
            width = mouse.screen.geometry.width,
        }

        w:setup {
            {
                {
                    {
                        {
                            markup = '<span font="awesomewm-font 14" color="#ffffff">a</span>',
                            widget = wibox.widget.textbox,
                        },
                        id = 'icon',
                        left = 10,
                        layout = wibox.container.margin
                    },
                    {
                        run_shell,
                        left = 10,
                        layout = wibox.container.margin,
                    },
                    id = 'left',
                    layout = wibox.layout.fixed.horizontal
                },
                widget = wibox.container.background,
                bg = '#333333',
                shape = function(cr, width, height)
                    gears.shape.rounded_rect(cr, width, height, 3)
                end,
                shape_border_color = '#74aeab',
                shape_border_width = 1,
                forced_width = 200,
                forced_height = 50
            },
            layout = wibox.container.place
        }

        return w
    end

    function widget_instance:launch()
        local s = mouse.screen
        if not self._cached_wiboxes[s] then
            self._cached_wiboxes[s] = {}
        end
        if not self._cached_wiboxes[s][1] then
            self._cached_wiboxes[s][1] = self:_create_wibox()
        end
        local w = self._cached_wiboxes[s][1]
        local rnd = math.random()
        awful.spawn.with_line_callback(
            string.format(self._cmd_blur, tostring(awful.screen.focused().geometry.x), rnd), {
            stdout = function()
                w.visible = true
                w.bgimage = '/tmp/i3lock-' .. rnd ..'.png'
                awful.placement.top(w, { margins = { top = 20 }, parent = awful.screen.focused() })
                awful.prompt.run {
                    prompt = 'Run: ',
                    bg_cursor = '#74aeab',
                    textbox = run_shell.widget,
                    completion_callback = completion.shell,
                    exe_callback = function(...)
                        run_shell:spawn_and_handle_error(...)
                    end,
                    history_path = gfs.get_cache_dir() .. "/history",
                    done_callback = function()
                        w.visible = false
                        w.bgimage = ''
                        awful.spawn([[bash -c 'rm -f /tmp/i3lock*']])
                    end
                }
            end,
            stderr = function(line)
                naughty.notify { text = "ERR:" .. line }
            end,
        })

    end

    return widget_instance
end

local function get_default_widget()
    if not widget.default_widget then
        widget.default_widget = widget.new()
    end
    return widget.default_widget
end

function widget.launch(...)
    return get_default_widget():launch(...)
end

return widget