externalize config for weather widget

1 files changed, 131 insertions, 116 deletions

diff --git a/weather-widget/weather.lua b/weather-widget/weather.lua
index d5f07f8..d060fd2 100644
--- a/weather-widget/weather.lua
+++ b/weather-widget/weather.lua
@@ -16,126 +16,141 @@ local secrets = require("awesome-wm-widgets.secrets")
 
 local path_to_icons = "/usr/share/icons/Arc/status/symbolic/"
 
-local icon_widget = wibox.widget {
-    {
-        id = "icon",
-        resize = false,
-        widget = wibox.widget.imagebox,
-    },
-    layout = wibox.container.margin(_ , 0, 0, 3),
-    set_image = function(self, path)
-        self.icon.image = path
-    end,
-}
-
-local temp_widget = wibox.widget{
-    font = "Play 9",
-    widget = wibox.widget.textbox,
-}
-
-local weather_widget = wibox.widget {
-    icon_widget,
-    temp_widget,
-    layout = wibox.layout.fixed.horizontal,
-}
-
---- Maps openWeatherMap icons to Arc icons
-local icon_map = {
-    ["01d"] = "weather-clear-symbolic.svg",
-    ["02d"] = "weather-few-clouds-symbolic.svg",
-    ["03d"] = "weather-clouds-symbolic.svg",
-    ["04d"] = "weather-overcast-symbolic.svg",
-    ["09d"] = "weather-showers-scattered-symbolic.svg",
-    ["10d"] = "weather-showers-symbolic.svg",
-    ["11d"] = "weather-storm-symbolic.svg",
-    ["13d"] = "weather-snow-symbolic.svg",
-    ["50d"] = "weather-fog-symbolic.svg",
-    ["01n"] = "weather-clear-night-symbolic.svg",
-    ["02n"] = "weather-few-clouds-night-symbolic.svg",
-    ["03n"] = "weather-clouds-night-symbolic.svg",
-    ["04n"] = "weather-overcast-symbolic.svg",
-    ["09n"] = "weather-showers-scattered-symbolic.svg",
-    ["10n"] = "weather-showers-symbolic.svg",
-    ["11n"] = "weather-storm-symbolic.svg",
-    ["13n"] = "weather-snow-symbolic.svg",
-    ["50n"] = "weather-fog-symbolic.svg"
-}
-
---- Return wind direction as a string.
-local function to_direction(degrees)
-    -- Ref: https://www.campbellsci.eu/blog/convert-wind-directions
-    if degrees == nil then
-        return "Unknown dir"
-    end
-    local directions = {
-        "N",
-        "NNE",
-        "NE",
-        "ENE",
-        "E",
-        "ESE",
-        "SE",
-        "SSE",
-        "S",
-        "SSW",
-        "SW",
-        "WSW",
-        "W",
-        "WNW",
-        "NW",
-        "NNW",
-        "N",
+local weather_widget = {}
+
+local function worker(args)
+
+    local args = args or {}
+
+    local font = args.font or 'Play 9'
+    local city = args.city or 'Montreal,ca'
+    local api_key = args.api_key or naughty.notify{preset = naughty.config.presets.critical, text = 'OpenweatherMap API key is not set'}
+    local units = args.units or 'metric'
+
+    local icon_widget = wibox.widget {
+        {
+            id = "icon",
+            resize = false,
+            widget = wibox.widget.imagebox,
+        },
+        layout = wibox.container.margin(_, 0, 0, 3),
+        set_image = function(self, path)
+            self.icon.image = path
+        end,
+    }
+
+    local temp_widget = wibox.widget {
+        font = font,
+        widget = wibox.widget.textbox,
+    }
+
+    weather_widget = wibox.widget {
+        icon_widget,
+        temp_widget,
+        layout = wibox.layout.fixed.horizontal,
     }
-    return directions[math.floor((degrees % 360) / 22.5) + 1]
-end
 
-local weather_timer = gears.timer({ timeout = 60 })
-local resp
-
-weather_timer:connect_signal("timeout", function ()
-    local resp_json, status = http.request('https://api.openweathermap.org/data/2.5/weather?q='
-            .. secrets.weather_widget_city
-            .. '&appid=' .. secrets.weather_widget_api_key
-            .. '&units=' .. secrets.weather_widget_units)
-    if (status ~= 200 and resp_json ~= nil) then
-        local err_resp = json.decode(resp_json)
-        naughty.notify{
-            title = 'Weather Widget Error',
-            text = err_resp.message,
-            preset = naughty.config.presets.critical,
+    --- Maps openWeatherMap icons to Arc icons
+    local icon_map = {
+        ["01d"] = "weather-clear-symbolic.svg",
+        ["02d"] = "weather-few-clouds-symbolic.svg",
+        ["03d"] = "weather-clouds-symbolic.svg",
+        ["04d"] = "weather-overcast-symbolic.svg",
+        ["09d"] = "weather-showers-scattered-symbolic.svg",
+        ["10d"] = "weather-showers-symbolic.svg",
+        ["11d"] = "weather-storm-symbolic.svg",
+        ["13d"] = "weather-snow-symbolic.svg",
+        ["50d"] = "weather-fog-symbolic.svg",
+        ["01n"] = "weather-clear-night-symbolic.svg",
+        ["02n"] = "weather-few-clouds-night-symbolic.svg",
+        ["03n"] = "weather-clouds-night-symbolic.svg",
+        ["04n"] = "weather-overcast-symbolic.svg",
+        ["09n"] = "weather-showers-scattered-symbolic.svg",
+        ["10n"] = "weather-showers-symbolic.svg",
+        ["11n"] = "weather-storm-symbolic.svg",
+        ["13n"] = "weather-snow-symbolic.svg",
+        ["50n"] = "weather-fog-symbolic.svg"
+    }
+
+    --- Return wind direction as a string.
+    local function to_direction(degrees)
+        -- Ref: https://www.campbellsci.eu/blog/convert-wind-directions
+        if degrees == nil then
+            return "Unknown dir"
+        end
+        local directions = {
+            "N",
+            "NNE",
+            "NE",
+            "ENE",
+            "E",
+            "ESE",
+            "SE",
+            "SSE",
+            "S",
+            "SSW",
+            "SW",
+            "WSW",
+            "W",
+            "WNW",
+            "NW",
+            "NNW",
+            "N",
         }
-    elseif (resp_json ~= nil) then
-        resp = json.decode(resp_json)
-        icon_widget.image = path_to_icons .. icon_map[resp.weather[1].icon]
-        temp_widget:set_text(string.gsub(resp.main.temp, "%.%d+", "")
-                .. '°'
-                .. (secrets.weather_widget_units == 'metric' and 'C' or 'F'))
+        return directions[math.floor((degrees % 360) / 22.5) + 1]
     end
-end)
-weather_timer:start()
-weather_timer:emit_signal("timeout")
-
---- Notification with weather information. Popups when mouse hovers over the icon
-local notification
-weather_widget:connect_signal("mouse::enter", function()
-    notification = naughty.notify{
-        icon = path_to_icons .. icon_map[resp.weather[1].icon],
-        icon_size=20,
-        text =
-            '<big>' .. resp.weather[1].main .. ' (' .. resp.weather[1].description .. ')</big><br>' ..
-            '<b>Humidity:</b> ' .. resp.main.humidity .. '%<br>' ..
-            '<b>Temperature:</b> ' .. resp.main.temp .. '°'
+
+    local weather_timer = gears.timer({ timeout = 60 })
+    local resp
+
+    weather_timer:connect_signal("timeout", function()
+        local resp_json, status = http.request('https://api.openweathermap.org/data/2.5/weather?q='
+                .. city
+                .. '&appid=' .. api_key
+                .. '&units=' .. units)
+        if (status ~= 200 and resp_json ~= nil) then
+            local err_resp = json.decode(resp_json)
+            naughty.notify {
+                title = 'Weather Widget Error',
+                text = err_resp.message,
+                preset = naughty.config.presets.critical,
+            }
+        elseif (resp_json ~= nil) then
+            resp = json.decode(resp_json)
+            icon_widget.image = path_to_icons .. icon_map[resp.weather[1].icon]
+            temp_widget:set_text(string.gsub(resp.main.temp, "%.%d+", "")
+                    .. '°'
+                    .. (units == 'metric' and 'C' or 'F'))
+        end
+    end)
+    weather_timer:start()
+    weather_timer:emit_signal("timeout")
+
+    --- Notification with weather information. Popups when mouse hovers over the icon
+    local notification
+    weather_widget:connect_signal("mouse::enter", function()
+        notification = naughty.notify {
+            icon = path_to_icons .. icon_map[resp.weather[1].icon],
+            icon_size = 20,
+            text = '<big>' .. resp.weather[1].main .. ' (' .. resp.weather[1].description .. ')</big><br>' ..
+                    '<b>Humidity:</b> ' .. resp.main.humidity .. '%<br>' ..
+                    '<b>Temperature:</b> ' .. resp.main.temp .. '°'
                     .. (secrets.weather_widget_units == 'metric' and 'C' or 'F') .. '<br>' ..
-            '<b>Pressure:</b> ' .. resp.main.pressure .. 'hPa<br>' ..
-            '<b>Clouds:</b> ' .. resp.clouds.all .. '%<br>' ..
-            '<b>Wind:</b> ' .. resp.wind.speed .. 'm/s (' .. to_direction(resp.wind.deg) .. ')',
-        timeout = 5, hover_timeout = 10,
-        width = 200
-    }
-end)
+                    '<b>Pressure:</b> ' .. resp.main.pressure .. 'hPa<br>' ..
+                    '<b>Clouds:</b> ' .. resp.clouds.all .. '%<br>' ..
+                    '<b>Wind:</b> ' .. resp.wind.speed .. 'm/s (' .. to_direction(resp.wind.deg) .. ')',
+            timeout = 5, hover_timeout = 10,
+            width = 200
+        }
+    end)
 
-weather_widget:connect_signal("mouse::leave", function()
-    naughty.destroy(notification)
-end)
+    weather_widget:connect_signal("mouse::leave", function()
+        naughty.destroy(notification)
+    end)
+
+    return weather_widget
+end
 
-return weather_widget
+return setmetatable(weather_widget, { __call = function(_, ...)
+    return worker(...)
+end })