237 lines
7.5 KiB
Lua
237 lines
7.5 KiB
Lua
-- 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.
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local gImages = {}
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function gImages:init(config)
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if not cred_data.google_apikey then
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print('Fehlender Key: google_apikey.')
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print('gImages.lua wird nicht aktiviert.')
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return
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elseif not cred_data.google_cse_id then
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print('Fehlender Key: google_cse_id.')
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print('gImages.lua wird nicht aktiviert.')
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return
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end
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gImages.triggers = {
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"^/[Ii][Mm][Gg] (.*)$",
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"^/[Ii] (.*)$"
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}
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gImages.doc = [[*
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]]..config.cmd_pat..[[img* _<Suchbegriff>_
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Sucht Bild mit Google und versendet es (SafeSearch aktiv)
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Alias: *]]..config.cmd_pat..[[i*]]
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end
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gImages.command = 'img <Suchbegriff>'
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-- Yes, the callback is copied from below, but I can't think of another method :\
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function gImages:callback(callback, msg, self, config, input)
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if not msg then return end
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utilities.answer_callback_query(self, callback, 'Suche nochmal nach "'..URL.unescape(input)..'"')
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utilities.send_typing(self, msg.chat.id, 'upload_photo')
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local hash = 'telegram:cache:gImages'
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local results = redis:smembers(hash..':'..string.lower(URL.unescape(input)))
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if not results[1] then
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print('doing web request')
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results = gImages:get_image(input)
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if results == 403 then
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utilities.send_reply(self, msg, config.errors.quotaexceeded, true)
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return
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elseif not results then
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utilities.send_reply(self, msg, config.errors.results, true)
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return
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end
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gImages:cache_result(results, input)
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end
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-- Random image from table
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local i = math.random(#results)
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-- Thanks to Amedeo for this!
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local failed = true
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local nofTries = 0
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while failed and nofTries < #results do
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if results[i].image then
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img_url = results[i].link
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mimetype = results[i].mime
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context = results[i].image.contextLink
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else -- from cache
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img_url = results[i]
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mimetype = redis:hget(hash..':'..img_url, 'mime')
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context = redis:hget(hash..':'..img_url, 'contextLink')
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end
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-- It's important to save the image with the right ending!
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if mimetype == 'image/gif' then
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file = download_to_file(img_url)
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elseif mimetype == 'image/png' then
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file = download_to_file(img_url)
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elseif mimetype == 'image/jpeg' then
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file = download_to_file(img_url)
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else
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file = nil
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end
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if not file then
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nofTries = nofTries + 1
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i = i+1
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if i > #results then
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i = 1
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end
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else
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failed = false
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end
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end
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if failed then
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utilities.send_reply(self, msg, 'Fehler beim Herunterladen eines Bildes.', true)
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return
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end
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if mimetype == 'image/gif' then
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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..'"}]]}')
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else
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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..'"}]]}')
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end
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if not result then
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utilities.send_reply(self, msg, config.errors.connection, true, '{"inline_keyboard":[[{"text":"Nochmal versuchen","callback_data":"@'..self.info.username..' gImages:'..input..'"}]]}')
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return
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end
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end
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function gImages:get_image(input)
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local apikey = cred_data.google_apikey
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local cseid = cred_data.google_cse_id
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local BASE_URL = 'https://www.googleapis.com/customsearch/v1'
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local url = BASE_URL..'/?searchType=image&alt=json&num=10&key='..apikey..'&cx='..cseid..'&safe=high'..'&q=' .. input .. '&fields=items(link,mime,image(contextLink))'
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local jstr, res = https.request(url)
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local jdat = json.decode(jstr).items
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if not jdat then
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return 'NORESULTS'
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end
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if jdat.error then
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if jdat.error.code == 403 then
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return 403
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else
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return false
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end
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end
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return jdat
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end
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function gImages:cache_result(results, text)
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local cache = {}
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for v in pairs(results) do
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cache[v] = results[v].link
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end
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for n, link in pairs(cache) do
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redis:hset('telegram:cache:gImages:'..link, 'mime', results[n].mime)
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redis:hset('telegram:cache:gImages:'..link, 'contextLink', results[n].image.contextLink)
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redis:expire('telegram:cache:gImages:'..link, 1209600)
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end
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cache_data('gImages', string.lower(text), cache, 1209600, 'set')
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end
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function gImages:action(msg, config, matches)
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local input = utilities.input(msg.text)
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if not input then
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if msg.reply_to_message and msg.reply_to_message.text then
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input = msg.reply_to_message.text
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else
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utilities.send_message(self, msg.chat.id, gImages.doc, true, msg.message_id, true)
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return
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end
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end
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print ('Überprüfe, ob das Wort auf der Blackliste steht: '..input)
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if is_blacklisted(input) then
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utilities.send_reply(self, msg, 'Vergiss es!')
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return
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end
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utilities.send_typing(self, msg.chat.id, 'upload_photo')
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local hash = 'telegram:cache:gImages'
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local results = redis:smembers(hash..':'..string.lower(input))
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if not results[1] then
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print('doing web request')
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results = gImages:get_image(URL.escape(input))
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if results == 403 then
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utilities.send_reply(self, msg, config.errors.quotaexceeded, true)
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return
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elseif not results or results == 'NORESULTS' then
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utilities.send_reply(self, msg, config.errors.results, true)
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return
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end
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gImages:cache_result(results, input)
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end
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-- Random image from table
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local i = math.random(#results)
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-- Thanks to Amedeo for this!
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local failed = true
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local nofTries = 0
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while failed and nofTries < #results do
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if results[i].image then
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img_url = results[i].link
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mimetype = results[i].mime
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context = results[i].image.contextLink
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else -- from cache
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img_url = results[i]
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mimetype = redis:hget(hash..':'..img_url, 'mime')
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context = redis:hget(hash..':'..img_url, 'contextLink')
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end
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-- It's important to save the image with the right ending!
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if mimetype == 'image/gif' then
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file = download_to_file(img_url)
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elseif mimetype == 'image/png' then
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file = download_to_file(img_url)
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elseif mimetype == 'image/jpeg' then
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file = download_to_file(img_url)
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else
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file = nil
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end
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if not file then
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nofTries = nofTries + 1
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i = i+1
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if i > #results then
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i = 1
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end
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else
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failed = false
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end
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end
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if failed then
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utilities.send_reply(self, msg, 'Fehler beim Herunterladen eines Bildes.', true)
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return
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end
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if mimetype == 'image/gif' then
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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)..'"}]]}')
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else
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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)..'"}]]}')
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end
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if not result then
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utilities.send_reply(self, msg, config.errors.connection, true, '{"inline_keyboard":[[{"text":"Nochmal versuchen","callback_data":"@'..self.info.username..' gImages:'..URL.escape(input)..'"}]]}')
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return
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end
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end
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return gImages |