-------------------------------------------------
-- Jira Widget for Awesome Window Manager
-- Shows the number of currently assigned issues
-- More details could be found here:
-- https://github.com/streetturtle/awesome-wm-widgets/tree/master/jira-widget

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

local awful = require("awful")
local wibox = require("wibox")
local watch = require("awful.widget.watch")
local json = require("json")
local spawn = require("awful.spawn")
local naughty = require("naughty")
local gears = require("gears")
local beautiful = require("beautiful")
local gfs = require("gears.filesystem")
local gs = require("gears.string")

local calendar_widget = {}

local function worker(args)

    local styles = {}
    local function rounded_shape(size, partial)
        if partial then
            return function(cr, width, height)
                gears.shape.partially_rounded_rect(cr, width, height,
                        false, true, false, true, 5)
            end
        else
            return function(cr, width, height)
                gears.shape.rounded_rect(cr, width, height, size)
            end
        end
    end
    styles.month   = { padding      = 4,
                       bg_color     = '#3B4252',
                       border_width = 2,
                       --shape        = rounded_shape(10)
    }
    styles.normal  = { shape    = rounded_shape(4) }
    styles.focus   = { fg_color = '#000000',
                       bg_color = '#88C0D0',
                       markup   = function(t) return '<b>' .. t .. '</b>' end,
                       shape    = rounded_shape(4)
    }
    styles.header  = { fg_color = '#8FBCBB',
                       markup   = function(t) return '<b>' .. t .. '</b>' end,
                       --shape    = rounded_shape(10)
                       bg_color = '#3B4252'
    }
    styles.weekday = { fg_color = '#88C0D0',
                       markup   = function(t) return '<b>' .. t .. '</b>' end,
                       bg_color = '#3B4252',
                       --shape    = rounded_shape(4)
    }
    local function decorate_cell(widget, flag, date)
        if flag=='monthheader' and not styles.monthheader then
            flag = 'header'
        end
        local props = styles[flag] or {}
        if props.markup and widget.get_text and widget.set_markup then
            widget:set_markup(props.markup(widget:get_text()))
        end
        -- Change bg color for weekends
        local d = {year=date.year, month=(date.month or 1), day=(date.day or 1)}
        local weekday = tonumber(os.date('%w', os.time(d)))
        local default_bg = (weekday==0 or weekday==6) and '#2E3440' or '#3B4252'
        local ret = wibox.widget {
            {
                {
                    widget,
                    halign = 'center',
                    widget = wibox.container.place
                },
                margins = (props.padding or 2) + (props.border_width or 0),
                widget  = wibox.container.margin
            },
            shape              = props.shape,
            shape_border_color = props.border_color or '#b9214f',
            shape_border_width = props.border_width or 0,
            fg                 = props.fg_color or '#D8DEE9',
            bg                 = props.bg_color or default_bg,
            widget             = wibox.container.background
        }
        return ret
    end

    local popup = awful.popup{
        visible = true,
        ontop = true,
        visible = false,
        shape = gears.shape.rounded_rect,
        border_width = 1,
        border_color = beautiful.bg_focus,
        maximum_width = 400,
        preferred_positions = top,
        offset = { y = 5 },
        widget = wibox.widget {
            date     = os.date('*t'),
            fn_embed = decorate_cell,
            widget   = wibox.widget.calendar.month,
            long_weekdays = true
        }
    }

    calendar_widget = wibox.widget.textbox()
    calendar_widget:set_text('calendar')

    calendar_widget:buttons(
            awful.util.table.join(
                    awful.button({}, 1, function()
                        if popup.visible then
                            popup.visible = not popup.visible
                        else
                            popup:move_next_to(mouse.current_widget_geometry)
                        end
                    end)
            )
    )

    return calendar_widget
end

return setmetatable(calendar_widget, { __call = function(_, ...) return worker(...) end })