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Mikubot-2/otouto/plugins/expand.lua

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local expand = {}
local http = require('socket.http')
local utilities = require('otouto.utilities')
function expand:init(config)
expand.triggers = {
"^/expand (https?://[%w-_%.%?%.:/%+=&]+)$"
}
expand.doc = [[*
]]..config.cmd_pat..[[expand* _<Kurz-URL>_: Verlängert Kurz-URL (301er/302er)]]
end
expand.command = 'expand <Kurz-URL>'
function expand:action(msg, config, matches)
local response_body = {}
local request_constructor = {
url = matches[1],
method = "HEAD",
sink = ltn12.sink.table(response_body),
headers = {},
redirect = false
}
local ok, response_code, response_headers, response_status_line = http.request(request_constructor)
if ok and response_headers.location then
utilities.send_reply(self, msg, response_headers.location)
return
else
utilities.send_reply(self, msg, "Fehler beim Erweitern der URL.")
return
end
end
return expand