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hackernews.lua
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hackernews.lua
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--[[
Based on a plugin by topkecleon. Licensed under GNU AGPLv3
https://github.com/topkecleon/otouto/blob/master/LICENSE.
Copyright 2020 Matthew Hesketh <matthew@matthewhesketh.com>
This code is licensed under the MIT. See LICENSE for details.
]]
local hackernews = {}
local mattata = require('mattata')
local https = require('ssl.https')
local json = require('dkjson')
function hackernews:init()
hackernews.commands = mattata.commands(self.info.username)
:command('hackernews')
:command('hn').table
hackernews.help = '/hackernews - Sends the top stories from Hacker News. Alias: /hn.'
end
function hackernews.get_results(hackernews_topstories, hackernews_result, hackernews_article)
local results = {}
local jstr, res = https.request(hackernews_topstories)
if res ~= 200
then
return false
end
local jdat = json.decode(jstr)
for i = 1, 8
do
local result_jstr, result_res = https.request(hackernews_result:format(jdat[i]))
if result_res ~= 200
then
return false
end
local result_jdat = json.decode(result_jstr)
local result
if result_jdat.url
then
result = string.format(
'\n• <code>[</code><a href="%s">%s</a><code>]</code> <a href="%s">%s</a>',
mattata.escape_html(hackernews_article:format(result_jdat.id)),
result_jdat.id,
mattata.escape_html(result_jdat.url),
mattata.escape_html(result_jdat.title)
)
else
result = string.format(
'\n• <code>[</code><a href="%s">%s</a><code>]</code> %s',
mattata.escape_html(hackernews_article:format(result_jdat.id)),
result_jdat.id,
mattata.escape_html(result_jdat.title)
)
end
table.insert(
results,
result
)
end
return results
end
function hackernews:on_message(message, configuration, language)
local results = hackernews.get_results('https://hacker-news.firebaseio.com/v0/topstories.json', 'https://hacker-news.firebaseio.com/v0/item/%s.json', 'https://news.ycombinator.com/item?id=%s')
if not results
then
return mattata.send_reply(
message,
language['errors']['connection']
)
end
local result_count = message.chat.id == message.from.id
and 8
or 4
local output = '<b>' .. language['hackernews']['1'] .. '</b>'
for i = 1, result_count
do
output = output .. results[i]
end
mattata.send_chat_action(message.chat.id)
return mattata.send_message(
message.chat.id,
output,
'html'
)
end
return hackernews

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hackernews.lua (2 KB)

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