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dictionary.lua
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dictionary.lua
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--[[
Copyright 2020 Matthew Hesketh <matthew@matthewhesketh.com>
This code is licensed under the MIT. See LICENSE for details.
]]
local dictionary = {}
local mattata = require('mattata')
local https = require('ssl.https')
local url = require('socket.url')
local ltn12 = require('ltn12')
local json = require('dkjson')
function dictionary:init(configuration)
dictionary.commands = mattata.commands(self.info.username):command('dictionary'):command('define').table
dictionary.help = '/dictionary <word> - Looks up the given word in the Oxford Dictionary and returns the relevant definition(s). Alias: /define.'
dictionary.url = 'https://od-api.oxforddictionaries.com/api/v1/entries/en/'
dictionary.id = configuration.keys.dictionary.id
dictionary.key = configuration.keys.dictionary.key
end
function dictionary.on_message(_, message, _, language)
local input = mattata.input(message.text)
if not input then
return mattata.send_reply(message, dictionary.help)
end
local body = {}
local _, res = https.request({
['url'] = dictionary.url .. url.escape(input),
['headers'] = {
['app_id'] = dictionary.id,
['app_key'] = dictionary.key
},
['sink'] = ltn12.sink.table(body),
})
if res ~= 200 then
return mattata.send_reply(message, language.errors.connection)
end
body = table.concat(body)
local jdat = json.decode(body)
if not jdat or not jdat.results[1] or not jdat.results[1].word or not jdat.results[1].lexicalEntries then
return mattata.send_reply(message, language.errors.results)
end
local word = jdat.results[1].word
word = mattata.escape_html(word)
local results = #jdat.results[1].lexicalEntries
results = tonumber(results) > 4 and 4 or results
local definitions = {}
for i = 1, results do
if jdat.results[1] and jdat.results[1].lexicalEntries and jdat.results[1].lexicalEntries[i].entries and jdat.results[1].lexicalEntries[i].entries[1].senses and jdat.results[1].lexicalEntries[i].entries[1].senses[1].definitions then
local entry = jdat.results[1].lexicalEntries[i].entries[1].senses[1].definitions[1]
entry = entry:gsub(':$', ''):gsub('%.$', '')
entry = mattata.escape_html(entry)
table.insert(definitions, '• ' .. entry)
end
end
local output = '<b>' .. word .. '</b>\n\n' .. table.concat(definitions, '\n')
return mattata.send_message(message.chat.id, output, 'html')
end
return dictionary

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