Added APOD plugin.

Gets Astronomy Picture of the Day, from NASA.

README.md

@@ -19,6 +19,7 @@ Here is a list of most otouto plugins.
 |--------|---------|----------|-------|
 | help.lua | /help | Returns a list of commands. | /h |
 | about.lua | /about | Returns the about text as configured in config.lua. |
+| apod.lua | /apod [query] | Gets Astronomy Picture of the Day for current day, or for a specific date (YYYY-MM-DD). | |
 | ping.lua | /ping | The simplest plugin ever! |
 | echo.lua | /echo <text> | Repeats a string of text. |
 | gSearch.lua | /google <query> | Returns Google web results. | /g, /gnsfw |
@@ -93,7 +94,7 @@ Where the key is the preconfigured response (where #NAME will be replaced with t
 ##Setup
 You **must** have Lua (5.2+), LuaSocket, and LuaSec installed. For uploading photos and other files, you must have curl installed. The fortune.lua plugin requires that fortune is installed.
 
-For weather.lua, lastfm.lua, and bible.lua to work, you must have API keys for [OpenWeatherMap](http://openweathermap.org), [last.fm](http://last.fm), and [Biblia.com](http://biblia.com), respectively. cats.lua uses an API key (via [The Cat API](http://thecatapi.com)) to get more results, though it is not required.
+For weather.lua, lastfm.lua, and bible.lua to work, you must have API keys for [OpenWeatherMap](http://openweathermap.org), [last.fm](http://last.fm), and [Biblia.com](http://biblia.com), respectively. cats.lua uses an API key (via [The Cat API](http://thecatapi.com)) to get more results, though it is not required. apod.lua uses an API key (via [NASA API](https://api.nasa.gov/)) to have more queries per minute, but it can be used with a demo API key (DEMO_KEY).
 
 **Before you do anything, open config.lua in a text editor and make the following changes:**
 
@@ -145,5 +146,5 @@ otouto uses dkjson, a pure-Lua JSON parser. This is provided with the code and d
 ##Contributors
 The creator and maintainer of otouto is [topkecleon](http://github.com/topkecleon). He can be contacted via [Telegram](http://telegram.me/topkecleon), [Twitter](http://twitter.com/topkecleon), or [email](mailto:topkecleon@outlook.com).
 
-Other developers who have contributed to otouto are [Juan Potato](http://github.com/JuanPotato), [Tiago Danin](http://github.com/TiagoDanin), [Ender](http://github.com/luksireiku), and [Iman Daneshi](http://github.com/Imandaneshi).
+Other developers who have contributed to otouto are [Juan Potato](http://github.com/JuanPotato), [Tiago Danin](http://github.com/TiagoDanin), [Ender](http://github.com/luksireiku), [Iman Daneshi](http://github.com/Imandaneshi) and [HeitorPB](https://github.com/heitorPB).
 

config.lua

@@ -6,6 +6,7 @@ return {
 	owm_api_key = '',
 	biblia_api_key = '',
 	thecatapi_key = '',
+	nasaapi_key = '',
 	time_offset = 0,
 	lang = 'en',
 	antisquig = false,
@@ -99,7 +100,8 @@ telegram.me/otouto
 		'cats.lua',
 		'hearthstone.lua',
 		'shout.lua',
-		-- Put new plugins here.
+		'apod.lua',
+		-- Put new plugins above this line.
 		'help.lua',
 		'greetings.lua'
 	}

plugins/apod.lua

@@ -0,0 +1,73 @@
+-- TODO:
+-- 	inline bot stuff
+
+if not config.nasaapi_key then
+	print('Missing config value: nasaapi_key.')
+	print('You can use the simple key DEMO_KEY, but it is very limited.')
+	print('apod.lua will not be enabled.')
+	return
+end
+
+local command = 'apod [query]'
+local doc = [[```
+/apod [query]
+Returns the Astronomy Picture of the Day.
+
+If the query is a date, in the format YYYY-MM-DD,
+the APOD of that day is returned.
+```]]
+
+local triggers = {
+	'^/apod[@'..bot.username..']*'
+}
+
+local action = function(msg)
+
+	local input = msg.text:input()
+	local caption = '' 
+	local date = '*'
+	--local date_url = ''
+
+	local url = 'https://api.nasa.gov/planetary/apod?api_key=' .. config.nasaapi_key
+
+	if input then
+		url = url .. '&date=' .. URL.escape(input)
+	--	date_url = string.sub(date,3,4) .. string.sub(date,6,7) .. string.sub(date,9,10)
+		date = date .. input
+	else
+	--	date_url = os.date("%y%m%d")
+		date = date .. os.date("%Y-%m-%d")
+	end
+
+	date = date .. '*\n'
+
+	local jstr, res = HTTPS.request(url)
+	if res ~= 200 then
+		sendReply(msg, config.errors.connection)
+		return
+	end
+
+	local jdat = JSON.decode(jstr)
+
+	if jdat.error then
+		sendReply(msg, config.errors.results)
+		return
+	end
+
+	--local weburl = 'http://apod.nasa.gov/apod/ap' .. date_url .. '.html'
+	--caption = date .. '[' .. jdat.title  .. '](' .. weburl .. ')\n'
+	caption = date .. '[' .. jdat.title  .. '](' .. jdat.url .. ')\n'
+
+	if jdat.copyright then
+		caption = caption .. 'Copyright: ' .. jdat.copyright
+	end
+
+	sendMessage(msg.chat.id, caption, false, nil, true)
+end
+
+return {
+	action = action,
+	triggers = triggers,
+	doc = doc,
+	command = command
+}