71 lines
2.1 KiB
Lua
71 lines
2.1 KiB
Lua
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-- contrib/btc_all.lua
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-- Copyright (C) 2017 0x5b <dragen15051@gmail.com>
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-- Copyright (C) 2017 Joerg Thalheim <joerg@thalheim.io>
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-- Copyright (C) 2019 Nguyễn Gia Phong <vn.mcsinyx@gmail.com>
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--
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-- This file is part of Vicious.
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--
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-- Vicious is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as
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-- published by the Free Software Foundation, either version 2 of the
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-- License, or (at your option) any later version.
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--
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-- Vicious is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with Vicious. If not, see <https://www.gnu.org/licenses/>.
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-- {{{ Grab environment
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local pcall = pcall
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local helpers = require("vicious.helpers")
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local spawn = require("vicious.spawn")
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local success, json = pcall(require, "cjson")
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if not success then
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json = require("json")
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end
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local string = {
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sub = string.sub,
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upper = string.upper,
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}
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-- }}}
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-- Btc: provides current bitcoin price
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-- vicious.widgets.btc
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local btc_all = {}
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-- {{ Bitcoin widget type
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function btc_all.async(format, warg, callback)
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-- Default values
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if not warg then warg = "usd" end
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local btc = { ["{price}"] = "N/A" }
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local currency_code = string.upper(warg)
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local url = "https://api.coindesk.com/v1/bpi/currentprice/" .. currency_code .. ".json"
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local cmd = "curl "..helpers.shellquote(url)
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-- {{ Checking response
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local function parse(response)
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-- If 'response' is not json, 'json.decode' will return Error
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local status, data = pcall(function() return json.decode(response) end)
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if not status or not data then
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return btc
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end
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btc["{price}"] = string.sub(data["bpi"][currency_code]["rate"], 0, -3)
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return btc
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end
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-- }}
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spawn.easy_async(cmd, function(stdout) callback(parse(stdout)) end)
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end
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-- }}}
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return helpers.setasyncall(btc_all)
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