From cf6323e11726cc52b4d988efdcd0eca7d17d18d8 Mon Sep 17 00:00:00 2001 From: razamatan Date: Tue, 14 Sep 2021 14:34:48 -0700 Subject: [PATCH] introduce helpers.uri (curl replacement) & migrate widget/weather to it - new dependency: needs libsoup gi installation (smaller than gvfs) - [breaking] weather: `(current/|forecast)_call` changed to `(current|forecast)_uri` - [breaking] weather: use scoped (non-global) `now.current` and `now.forecast` to avoid `weather_now` clobbering. see #550 for more details. - weather: display something useful by default - weather: render the hour of the forecast by default since the default forecast is 5 days by 3h increments - weather: add degree symbol to temperatures by default --- helpers.lua | 21 +++++++++++++++++ widget/weather.lua | 56 ++++++++++++++++++++++++---------------------- 2 files changed, 50 insertions(+), 27 deletions(-) diff --git a/helpers.lua b/helpers.lua index ef9e08b..4a91bf0 100644 --- a/helpers.lua +++ b/helpers.lua @@ -7,6 +7,7 @@ local spawn = require("awful.spawn") local timer = require("gears.timer") +local gdebug = require("gears.debug") local debug = require("debug") local io = { lines = io.lines, open = io.open } @@ -14,6 +15,7 @@ local pairs = pairs local rawget = rawget local tsort = table.sort local unpack = unpack or table.unpack -- lua 5.1 retro-compatibility +local lgi = require("lgi") -- Lain helper functions for internal use -- lain.helpers @@ -132,6 +134,25 @@ end -- }}} +-- {{{ Network functions + +-- fetch a http uri using lgi.Soup +function helpers.uri(uri, callback, error_handler) + error_handler = error_handler or gdebug.print_error + local ss = lgi.Soup.Session() + local msg = lgi.Soup.Message.new('GET', uri) + ss:send_and_read_async(msg, lgi.GLib.PRIORITY_DEFAULT, nil, function(_, resp, _) + local buf, err = ss:send_and_read_finish(resp) + if err then + error_handler(err) + elseif buf then + callback(buf:get_data()) + end + end) +end + +-- }}} + -- {{{ A map utility helpers.map_table = {} diff --git a/widget/weather.lua b/widget/weather.lua index 93028b5..3ea1fad 100644 --- a/widget/weather.lua +++ b/widget/weather.lua @@ -17,17 +17,18 @@ local type = type local tonumber = tonumber -- OpenWeatherMap --- current weather and X-days forecast +-- current weather and 5d/3h forecast -- lain.widget.weather local function factory(args) args = args or {} - local weather = { widget = args.widget or wibox.widget.textbox() } + -- weather.now will hold the 'current' and 'forecast' state + local weather = { widget = args.widget or wibox.widget.textbox(), now = {} } local APPID = args.APPID -- mandatory api key local timeout = args.timeout or 900 -- 15 min - local current_call = args.current_call or "curl -s 'https://api.openweathermap.org/data/2.5/weather?lat=%s&lon=%s&APPID=%s&units=%s&lang=%s'" - local forecast_call = args.forecast_call or "curl -s 'https://api.openweathermap.org/data/2.5/forecast?lat=%s&lon=%s&APPID=%s&cnt=%s&units=%s&lang=%s'" + local current_uri = args.current_uri or "https://api.openweathermap.org/data/2.5/weather?lat=%s&lon=%s&APPID=%s&units=%s&lang=%s" + local forecast_uri = args.forecast_uri or "https://api.openweathermap.org/data/2.5/forecast?lat=%s&lon=%s&APPID=%s&cnt=%s&units=%s&lang=%s" local lat = args.lat or 0 -- placeholder local lon = args.lon or 0 -- placeholder local units = args.units or "metric" @@ -37,15 +38,15 @@ local function factory(args) local notification_preset = args.notification_preset or {} local notification_text_fun = args.notification_text_fun or function (wn) - local day = os.date("%a %d", wn["dt"]) + local day = os.date("%a %d %H:%M", wn["dt"]) local temp = math.floor(wn["main"]["temp"]) local desc = wn["weather"][1]["description"] - return string.format("%s: %s, %d ", day, desc, temp) + return string.format("%s: %s, %d°", day, desc, temp) end local weather_na_markup = args.weather_na_markup or " N/A " local followtag = args.followtag or false local showpopup = args.showpopup or "on" - local settings = args.settings or function() end + local settings = args.settings or function(_, _) end weather.widget:set_markup(weather_na_markup) weather.icon_path = icons_path .. "na.png" @@ -88,18 +89,17 @@ local function factory(args) end function weather.forecast_update() - local cmd = string.format(forecast_call, lat, lon, APPID, cnt, units, lang) + local uri = string.format(forecast_uri, lat, lon, APPID, cnt, units, lang) + helpers.uri(uri, function(f) + local forecast, _, err = json.decode(f, 1, nil) - helpers.async(cmd, function(f) - local err - weather_now, _, err = json.decode(f, 1, nil) - - if not err and type(weather_now) == "table" and tonumber(weather_now["cod"]) == 200 then + if not err and type(weather.forecast) == "table" and tonumber(forecast["cod"]) == 200 then + weather.now.forecast = forecast weather.notification_text = "" - for i = 1, weather_now["cnt"], math.floor(weather_now["cnt"] / cnt) do + for i = 1, forecast["cnt"], math.floor(forecast["cnt"] / cnt) do weather.notification_text = weather.notification_text .. - notification_text_fun(weather_now["list"][i]) - if i < weather_now["cnt"] then + notification_text_fun(forecast["list"][i]) + if i < forecast["cnt"] then weather.notification_text = weather.notification_text .. "\n" end end @@ -108,17 +108,18 @@ local function factory(args) end function weather.update() - local cmd = string.format(current_call, lat, lon, APPID, units, lang) + local uri = string.format(current_uri, lat, lon, APPID, units, lang) + helpers.uri(uri, function(f) + local current, _, err = json.decode(f, 1, nil) - helpers.async(cmd, function(f) - local err - weather_now, _, err = json.decode(f, 1, nil) - - if not err and type(weather_now) == "table" and tonumber(weather_now["cod"]) == 200 then - local sunrise = tonumber(weather_now["sys"]["sunrise"]) - local sunset = tonumber(weather_now["sys"]["sunset"]) - local icon = weather_now["weather"][1]["icon"] + if not err and type(current) == "table" and tonumber(current["cod"]) == 200 then + weather.now.current = current + local sunrise = tonumber(current["sys"]["sunrise"]) + local sunset = tonumber(current["sys"]["sunset"]) + local icon = current["weather"][1]["icon"] local loc_now = os.time() + local city = current["name"] + local temp = current["main"]["temp"] if sunrise <= loc_now and loc_now <= sunset then icon = string.gsub(icon, "n", "d") @@ -127,8 +128,8 @@ local function factory(args) end weather.icon_path = icons_path .. icon .. ".png" - widget = weather.widget - settings() + weather.widget:set_markup(string.format(" %s %d° ", city, temp)) + settings(weather.widget, weather.now) else weather.icon_path = icons_path .. "na.png" weather.widget:set_markup(weather_na_markup) @@ -138,6 +139,7 @@ local function factory(args) end) end + if showpopup == "on" then weather.attach(weather.widget) end weather.timer = helpers.newtimer("weather-" .. lat .. ":" .. lon, timeout, weather.update, false, true)