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Mikubot-2/otouto/plugins/gImages.lua

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-- You need a Google API key and a Google Custom Search Engine set up to use this, in config.google_api_key and config.google_cse_key, respectively.
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-- You must also sign up for the CSE in the Google Developer Console, and enable image results.
local gImages = {}
local HTTPS = require('ssl.https')
HTTPS.timeout = 10
local URL = require('socket.url')
local JSON = require('dkjson')
local redis = (loadfile "./otouto/redis.lua")()
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local utilities = require('otouto.utilities')
local bindings = require('otouto.bindings')
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function gImages:init(config)
if not cred_data.google_apikey then
print('Missing config value: google_apikey.')
print('gImages.lua will not be enabled.')
return
elseif not cred_data.google_cse_id then
print('Missing config value: google_cse_id.')
print('gImages.lua will not be enabled.')
return
end
gImages.triggers = utilities.triggers(self.info.username, config.cmd_pat):t('img', true):t('i', true).table
gImages.doc = [[*
]]..config.cmd_pat..[[img* _<Suchbegriff>_
Sucht Bild mit Google und versendet es (SafeSearch aktiv)
Alias: *]]..config.cmd_pat..[[i*]]
end
gImages.command = 'img <Suchbegriff>'
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-- Yes, the callback is copied from below, but I can't think of another method :\
function gImages:callback(callback, msg, self, config, input)
if not msg then return end
utilities.answer_callback_query(self, callback, 'Suche nochmal nach "'..URL.unescape(input)..'"')
utilities.send_typing(self, msg.chat.id, 'upload_photo')
local hash = 'telegram:cache:gImages'
local results = redis:smembers(hash..':'..string.lower(URL.unescape(input)))
if not results[1] then
print('doing web request')
results = gImages:get_image(input)
if results == 403 then
utilities.send_reply(self, msg, config.errors.quotaexceeded, true)
return
elseif not results then
utilities.send_reply(self, msg, config.errors.results, true)
return
end
gImages:cache_result(results, input)
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end
-- Random image from table
local i = math.random(#results)
-- Thanks to Amedeo for this!
local failed = true
local nofTries = 0
while failed and nofTries < #results do
if results[i].image then
img_url = results[i].link
mimetype = results[i].mime
context = results[i].image.contextLink
else -- from cache
img_url = results[i]
mimetype = redis:hget(hash..':'..img_url, 'mime')
context = redis:hget(hash..':'..img_url, 'contextLink')
end
-- It's important to save the image with the right ending!
if mimetype == 'image/gif' then
file = download_to_file(img_url, 'img.gif')
elseif mimetype == 'image/png' then
file = download_to_file(img_url, 'img.png')
elseif mimetype == 'image/jpeg' then
file = download_to_file(img_url, 'img.jpg')
else
file = nil
end
if not file then
nofTries = nofTries + 1
i = i+1
if i > #results then
i = 1
end
else
failed = false
end
end
if failed then
utilities.send_reply(self, msg, 'Fehler beim Herunterladen eines Bildes.', true, '{"inline_keyboard":[[{"text":"Nochmal versuchen","callback_data":"@'..self.info.username..' gImages:'..input..'"}]]}')
return
end
if mimetype == 'image/gif' then
result = utilities.send_document(self, msg.chat.id, file, nil, msg.message_id, '{"inline_keyboard":[[{"text":"Seite aufrufen","url":"'..context..'"},{"text":"Bild aufrufen","url":"'..img_url..'"},{"text":"Nochmal suchen","callback_data":"@'..self.info.username..' gImages:'..input..'"}]]}')
else
result = utilities.send_photo(self, msg.chat.id, file, nil, msg.message_id, '{"inline_keyboard":[[{"text":"Seite aufrufen","url":"'..context..'"},{"text":"Bild aufrufen","url":"'..img_url..'"},{"text":"Nochmal suchen","callback_data":"@'..self.info.username..' gImages:'..input..'"}]]}')
end
if not result then
utilities.send_reply(self, msg, config.errors.connection, true, '{"inline_keyboard":[[{"text":"Nochmal versuchen","callback_data":"gImages:'..input..'"}]]}')
return
end
end
function gImages:get_image(input)
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local apikey = cred_data.google_apikey -- 100 requests is RIDICULOUS, Google!
local cseid = cred_data.google_cse_id
local BASE_URL = 'https://www.googleapis.com/customsearch/v1'
local url = BASE_URL..'/?searchType=image&alt=json&num=10&key='..apikey..'&cx='..cseid..'&safe=high'..'&q=' .. input .. '&fields=items(link,mime,image(contextLink))'
local jstr, res = HTTPS.request(url)
local jdat = JSON.decode(jstr).items
if not jdat then
return 'NORESULTS'
end
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if jdat.error then
if jdat.error.code == 403 then
return 403
else
return false
end
end
return jdat
end
function gImages:cache_result(results, text)
local cache = {}
for v in pairs(results) do
table.insert(cache, results[v].link)
end
for n, link in pairs(cache) do
redis:hset('telegram:cache:gImages:'..link, 'mime', results[n].mime)
redis:hset('telegram:cache:gImages:'..link, 'contextLink', results[n].image.contextLink)
redis:expire('telegram:cache:gImages:'..link, 1209600)
end
cache_data('gImages', string.lower(text), cache, 1209600, 'set')
end
function gImages:action(msg, config, matches)
local input = utilities.input(msg.text)
if not input then
if msg.reply_to_message and msg.reply_to_message.text then
input = msg.reply_to_message.text
else
utilities.send_message(self, msg.chat.id, gImages.doc, true, msg.message_id, true)
return
end
end
print ('Checking if search contains blacklisted word: '..input)
if is_blacklisted(input) then
utilities.send_reply(self, msg, 'Vergiss es! ._.')
return
end
utilities.send_typing(self, msg.chat.id, 'upload_photo')
local hash = 'telegram:cache:gImages'
local results = redis:smembers(hash..':'..string.lower(input))
if not results[1] then
print('doing web request')
results = gImages:get_image(URL.escape(input))
if results == 403 then
utilities.send_reply(self, msg, config.errors.quotaexceeded, true)
return
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elseif not results or results == 'NORESULTS' then
utilities.send_reply(self, msg, config.errors.results, true)
return
end
gImages:cache_result(results, input)
end
-- Random image from table
local i = math.random(#results)
-- Thanks to Amedeo for this!
local failed = true
local nofTries = 0
while failed and nofTries < #results do
if results[i].image then
img_url = results[i].link
mimetype = results[i].mime
context = results[i].image.contextLink
else -- from cache
img_url = results[i]
mimetype = redis:hget(hash..':'..img_url, 'mime')
context = redis:hget(hash..':'..img_url, 'contextLink')
end
-- It's important to save the image with the right ending!
if mimetype == 'image/gif' then
file = download_to_file(img_url, 'img.gif')
elseif mimetype == 'image/png' then
file = download_to_file(img_url, 'img.png')
elseif mimetype == 'image/jpeg' then
file = download_to_file(img_url, 'img.jpg')
else
file = nil
end
if not file then
nofTries = nofTries + 1
i = i+1
if i > #results then
i = 1
end
else
failed = false
end
end
if failed then
utilities.send_reply(self, msg, 'Fehler beim Herunterladen eines Bildes.', true, '{"inline_keyboard":[[{"text":"Nochmal versuchen","callback_data":"gImages:'..URL.escape(input)..'"}]]}')
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return
end
if mimetype == 'image/gif' then
result = utilities.send_document(self, msg.chat.id, file, nil, msg.message_id, '{"inline_keyboard":[[{"text":"Seite aufrufen","url":"'..context..'"},{"text":"Bild aufrufen","url":"'..img_url..'"},{"text":"Nochmal suchen","callback_data":"@'..self.info.username..' gImages:'..URL.escape(input)..'"}]]}')
else
result = utilities.send_photo(self, msg.chat.id, file, nil, msg.message_id, '{"inline_keyboard":[[{"text":"Seite aufrufen","url":"'..context..'"},{"text":"Bild aufrufen","url":"'..img_url..'"},{"text":"Nochmal suchen","callback_data":"@'..self.info.username..' gImages:'..URL.escape(input)..'"}]]}')
end
if not result then
utilities.send_reply(self, msg, config.errors.connection, true, '{"inline_keyboard":[[{"text":"Nochmal versuchen","callback_data":"gImages:'..URL.escape(input)..'"}]]}')
return
end
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end
return gImages