diff options
Diffstat (limited to 'awesome/lain/widgets/weather.lua')
-rw-r--r-- | awesome/lain/widgets/weather.lua | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/awesome/lain/widgets/weather.lua b/awesome/lain/widgets/weather.lua new file mode 100644 index 0000000..d1624fa --- /dev/null +++ b/awesome/lain/widgets/weather.lua @@ -0,0 +1,130 @@ + +--[[ + + Licensed under GNU General Public License v2 + * (c) 2015, Luke Bonham + +--]] + +local newtimer = require("lain.helpers").newtimer +local async = require("lain.asyncshell") +local json = require("lain.util").dkjson +local lain_icons = require("lain.helpers").icons_dir +local naughty = require("naughty") +local wibox = require("wibox") + +local math = { floor = math.floor } +local string = { format = string.format, + gsub = string.gsub } + +local setmetatable = setmetatable + +-- OpenWeatherMap +-- current weather and X-days forecast +-- lain.widgets.weather + +local function worker(args) + local weather = {} + local args = args or {} + local timeout = args.timeout or 900 -- 15 min + local timeout_forecast = args.timeout or 86400 -- 24 hrs + local current_call = "curl -s 'http://api.openweathermap.org/data/2.5/weather?id=%s&units=%s&lang=%s'" + local forecast_call = "curl -s 'http://api.openweathermap.org/data/2.5/forecast/daily?id=%s&units=%s&lang=%s&cnt=%s'" + local city_id = args.city_id or 0 -- placeholder + local units = args.units or "metric" + local lang = args.lang or "en" + local cnt = args.cnt or 7 + local date_cmd = args.date_cmd or "date -u -d @%d +'%%a %%d'" + local icons_path = args.icons_path or lain_icons .. "openweathermap/" + local w_notification_preset = args.w_notification_preset or {} + local settings = args.settings or function() end + + weather.widget = wibox.widget.textbox('') + weather.icon = wibox.widget.imagebox() + + function weather.show(t_out) + weather.hide() + weather.notification = naughty.notify({ + text = weather.notification_text, + icon = weather.icon_path, + timeout = t_out, + preset = w_notification_preset + }) + end + + function weather.hide() + if weather.notification ~= nil then + naughty.destroy(weather.notification) + weather.notification = nil + end + end + + function weather.attach(obj) + obj:connect_signal("mouse::enter", function() + weather.show(0) + end) + obj:connect_signal("mouse::leave", function() + weather.hide() + end) + end + + function weather.forecast_update() + local cmd = string.format(forecast_call, city_id, units, lang, cnt) + async.request(cmd, function(f) + j = f:read("*a") + f:close() + weather_now, pos, err = json.decode(j, 1, nil) + + if not err and weather_now ~= nil and tonumber(weather_now["cod"]) == 200 then + weather.notification_text = '' + for i = 1, weather_now["cnt"] do + local f = assert(io.popen(string.format(date_cmd, weather_now["list"][i]["dt"]))) + day = string.gsub(f:read("a"), "\n", "") + f:close() + + tmin = math.floor(weather_now["list"][i]["temp"]["min"]) + tmax = math.floor(weather_now["list"][i]["temp"]["max"]) + desc = weather_now["list"][i]["weather"][1]["description"] + + weather.notification_text = weather.notification_text .. + string.format("<b>%s</b>: %s, %d - %d ", day, desc, tmin, tmax) + + if i < weather_now["cnt"] then + weather.notification_text = weather.notification_text .. "\n" + end + end + else + weather.icon_path = icons_path .. "na.png" + weather.notification_text = "API/connection error or bad/not set city ID" + end + end) + end + + function weather.update() + local cmd = string.format(current_call, city_id, units, lang) + async.request(cmd, function(f) + j = f:read("*a") + f:close() + weather_now, pos, err = json.decode(j, 1, nil) + + if not err and weather_now ~= nil and tonumber(weather_now["cod"]) == 200 then + weather.icon_path = icons_path .. weather_now["weather"][1]["icon"] .. ".png" + weather.icon:set_image(weather.icon_path) + widget = weather.widget + settings() + else + weather.widget._layout.text = " N/A " -- tries to avoid textbox bugs + weather.icon:set_image(icons_path .. "na.png") + end + end) + end + + weather.attach(weather.widget) + + newtimer("weather", timeout, weather.update) + newtimer("weather_forecast", timeout, weather.forecast_update) + + return setmetatable(weather, { __index = weather.widget }) +end + +return setmetatable({}, { __call = function(_, ...) return worker(...) end }) |