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Mikubot-2/otouto/plugins/preview.lua
Andreas Bielawski 72262be90c Upstream
2016-08-14 16:30:06 +02:00

41 lines
1.0 KiB
Lua

local preview = {}
preview.command = 'preview <link>'
function preview:init(config)
preview.triggers = utilities.triggers(self.info.username, config.cmd_pat):t('preview', true).table
preview.doc = [[```
]]..config.cmd_pat..[[preview <link>
Returns a full-message, "unlinked" preview.
```]]
end
function preview:action(msg)
local input = utilities.input_from_msg(msg)
if not input then
utilities.send_reply(self, msg, preview.doc, true)
return
end
input = utilities.get_word(input, 1)
if not input:match('^https?://.+') then
input = 'http://' .. input
end
local res = http.request(input)
if not res then
utilities.send_reply(self, msg, 'Bitte gebe einen validen Link an.')
return
end
if res:len() == 0 then
utilities.send_reply(self, msg, 'Sorry, dieser Link lässt uns keine Vorschau erstellen.')
return
end
-- Invisible zero-width, non-joiner.
local output = '<a href="' .. input .. '">' .. utilities.char.zwnj .. '</a>'
utilities.send_message(self, msg.chat.id, output, false, nil, 'HTML')
end
return preview