--   This file is part of Reno desktop.
--
--  Reno desktop is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
--
--  Reno desktop is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
--
--  You should have received a copy of the GNU General Public License along with Reno desktop. If not, see <https://www.gnu.org/licenses/>. 
-- Client context menu base
local awmtk2 = require("awmtk2")
local wibox = require("wibox")
local awful = require("awful")
local gears = require("gears")
local builder = require("builder")
local ask = require("asckey")
local digger = require("digger")
local style = awmtk2.create_style("client_menu",
awmtk2.generic.composite_widget,{})
local templates = awmtk2.create_template_lib("client_menu",awmtk2.templates,{})
local t = awmtk2.build_templates(templates,style,false)

-- Create a global context menu for clients first
-- This saves us memory on not creating separate menus for every client
if not context_menu then
    -- load client menu config
    local config_file = io.open(root_path.."/themes/"..global.theme..'/config/client_menu.json',"r")
    local config
    if config_file then
        config = config_file:read("*a")
        config_file:close()
    else
        config = [[{"list":[{"widget":"widgets.clientcontrols"}]}]]
    end
    context_menu = awful.popup(t.popup(builder(
        config,
        {
            style = style.base,
        }
    )))
    -- Close context menu on right click
    context_menu:connect_signal("button::press",function(_,_,_,b)
        if b == 3 then
            context_menu.visible = false
        end
    end)
    -- Generate a list of all existing menu_root objects
    local menus = digger(context_menu.widget,"menu_root")
    local context_menu_size = context_menu.width * context_menu.height
    context_menu.widget:connect_signal("widget::size_changed",function()
        -- Attach callbacks to close context_menu to new buttons
        local already_managed = {}
        for _,v in pairs(menus) do
            already_managed[v] = true
        end
        menus = digger(context_menu.widget,"menu_root")
        for _,v in pairs(menus) do
            if not already_managed[v] then
                v:connect_signal("cascade::kill",function()
                    context_menu.visible = false
                end)
            end
        end
    end)
    -- Close all cascading menus if our menu becomes invisible
    context_menu:connect_signal("property::visible",function()
        local current_context_menu_size = context_menu.height * context_menu.width
        if current_context_menu_size ~= context_menu_size then
            context_menu:emit_signal("widget::size_changed")
            context_menu_size = current_context_menu_size
        end
        if not context_menu.visible then
            for _,v in pairs(menus) do
                v:emit_signal_recursive("cascade::kill")
            end
        end
    end)
    -- If client became unfocused, close menu
    client.connect_signal("focus",function()
        context_menu.visible = false
    end)
    -- If any of the menus emits cascade::kill, close the menu
    for _,v in pairs(menus) do
        v:connect_signal("cascade::kill",function()
            context_menu.visible = false
        end)
    end
end
root.keys(gears.table.join(
    root.keys(),
    ask.k(":client.menu",function()
        context_menu.visible = (not context_menu.visible)
        if context_menu.visible then
            context_menu.x = client.focus.x + 10
            context_menu.y = client.focus.y + 10
        end
    end,{description = "Open client menu", group = "client"})
))

return function(args)
    local widget = wibox.widget({
        widget = awful.widget.clienticon,
        client = args.client
    })
    widget:connect_signal("button::press",function()
        context_menu.visible = (not context_menu.visible)
        if context_menu.visible then 
            context_menu.x = mouse.coords().x
            context_menu.y = mouse.coords().y
        end
    end)
    return widget
end