45 lines
1.1 KiB
Lua
Executable File
45 lines
1.1 KiB
Lua
Executable File
local calc = {}
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local URL = require('socket.url')
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local HTTPS = require('ssl.https')
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local bindings = require('bindings')
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local utilities = require('utilities')
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calc.command = 'calc <expression>'
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calc.doc = [[```
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/calc <expression>
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Returns solutions to mathematical expressions and conversions between common units. Results provided by mathjs.org.
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```]]
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function calc:init()
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calc.triggers = utilities.triggers(self.info.username):t('calc', true).table
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end
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function calc:action(msg)
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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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bindings.sendMessage(self, msg.chat.id, calc.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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local url = 'https://api.mathjs.org/v1/?expr=' .. URL.escape(input)
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local output = HTTPS.request(url)
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if not output then
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bindings.sendReply(self, msg, self.config.errors.connection)
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return
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end
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output = '`' .. output .. '`'
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bindings.sendMessage(self, msg.chat.id, output, true, msg.message_id, true)
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end
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return calc
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