84 lines
2.7 KiB
Lua
84 lines
2.7 KiB
Lua
local reddit = {}
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local HTTP = require('socket.http')
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local URL = require('socket.url')
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local JSON = require('dkjson')
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local utilities = require('otouto.utilities')
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reddit.command = 'reddit [r/subreddit | query]'
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function reddit:init(config)
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reddit.triggers = utilities.triggers(self.info.username, config.cmd_pat, {'^/r/'}):t('reddit', true):t('r', true):t('r/', true).table
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reddit.doc = config.cmd_pat .. [[reddit [r/subreddit | query]
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Returns the top posts or results for a given subreddit or query. If no argument is given, returns the top posts from r/all. Querying specific subreddits is not supported.
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Aliases: ]] .. config.cmd_pat .. 'r, /r/subreddit'
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end
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local format_results = function(posts)
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local output = ''
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for _,v in ipairs(posts) do
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local post = v.data
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local title = post.title:gsub('%[', '('):gsub('%]', ')'):gsub('&', '&')
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if title:len() > 256 then
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title = title:sub(1, 253)
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title = utilities.trim(title) .. '...'
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end
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local short_url = 'redd.it/' .. post.id
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local s = '[' .. title .. '](' .. short_url .. ')'
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if post.domain and not post.is_self and not post.over_18 then
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s = '`[`[' .. post.domain .. '](' .. post.url:gsub('%)', '\\)') .. ')`]` ' .. s
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end
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output = output .. '• ' .. s .. '\n'
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end
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return output
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end
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reddit.subreddit_url = 'http://www.reddit.com/%s/.json?limit='
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reddit.search_url = 'http://www.reddit.com/search.json?q=%s&limit='
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reddit.rall_url = 'http://www.reddit.com/.json?limit='
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function reddit:action(msg, config)
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-- Eight results in PM, four results elsewhere.
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local limit = 4
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if msg.chat.type == 'private' then
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limit = 8
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end
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local text = msg.text_lower
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if text:match('^/r/.') then
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-- Normalize input so this hack works easily.
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text = msg.text_lower:gsub('^/r/', config.cmd_pat..'r r/')
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end
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local input = utilities.input(text)
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local source, url
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if input then
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if input:match('^r/.') then
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input = utilities.get_word(input, 1)
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url = reddit.subreddit_url:format(input) .. limit
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source = '*/' .. utilities.md_escape(input) .. '*\n'
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else
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input = utilities.input(msg.text)
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source = '*Results for* _' .. utilities.md_escape(input) .. '_ *:*\n'
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input = URL.escape(input)
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url = reddit.search_url:format(input) .. limit
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end
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else
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url = reddit.rall_url .. limit
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source = '*/r/all*\n'
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end
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local jstr, res = HTTP.request(url)
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if res ~= 200 then
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utilities.send_reply(self, msg, config.errors.connection)
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else
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local jdat = JSON.decode(jstr)
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if #jdat.data.children == 0 then
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utilities.send_reply(self, msg, config.errors.results)
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else
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local output = format_results(jdat.data.children)
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output = source .. output
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utilities.send_message(self, msg.chat.id, output, true, nil, true)
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end
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end
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end
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return reddit
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