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Mikubot-2/plugins/currency.lua
2016-04-10 21:04:47 -07:00

63 lines
1.5 KiB
Lua
Executable File

local currency = {}
local HTTPS = require('ssl.https')
local bindings = require('bindings')
local utilities = require('utilities')
currency.command = 'cash [amount] <from> to <to>'
currency.doc = [[```
/cash [amount] <from> to <to>
Example: /cash 5 USD to EUR
Returns exchange rates for various currencies.
Source: Google Finance.
```]]
function currency:init()
currency.triggers = utilities.triggers(self.info.username):t('cash', true).table
end
function currency:action(msg)
local input = msg.text:upper()
if not input:match('%a%a%a TO %a%a%a') then
bindings.sendMessage(self, msg.chat.id, currency.doc, true, msg.message_id, true)
return
end
local from = input:match('(%a%a%a) TO')
local to = input:match('TO (%a%a%a)')
local amount = utilities.get_word(input, 2)
amount = tonumber(amount) or 1
local result = 1
local url = 'https://www.google.com/finance/converter'
if from ~= to then
url = url .. '?from=' .. from .. '&to=' .. to .. '&a=' .. amount
local str, res = HTTPS.request(url)
if res ~= 200 then
bindings.sendReply(self, msg, self.config.errors.connection)
return
end
str = str:match('<span class=bld>(.*) %u+</span>')
if not str then
bindings.sendReply(self, msg, self.config.errors.results)
return
end
result = string.format('%.2f', str)
end
local output = amount .. ' ' .. from .. ' = ' .. result .. ' ' .. to .. '\n\n'
output = output .. os.date('!%F %T UTC') .. '\nSource: Google Finance'
output = '`' .. output .. '`'
bindings.sendMessage(self, msg.chat.id, output, true, nil, true)
end
return currency