From d72b28198a09556a04307ade3039843baf6d1a84 Mon Sep 17 00:00:00 2001
From: abs3nt <abs3nt@asdf.cafe>
Date: Tue, 28 Feb 2023 17:39:42 -0800
Subject: [PATCH] currency

---
 cmd/currency.go | 240 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 240 insertions(+)
 create mode 100644 cmd/currency.go

diff --git a/cmd/currency.go b/cmd/currency.go
new file mode 100644
index 0000000..1fbea3d
--- /dev/null
+++ b/cmd/currency.go
@@ -0,0 +1,240 @@
+/*
+Copyright © 2023 NAME HERE <EMAIL ADDRESS>
+*/
+package cmd
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+var currencies = []string{
+	"USD",
+	"AED",
+	"AFN",
+	"ALL",
+	"AMD",
+	"ANG",
+	"AOA",
+	"ARS",
+	"AUD",
+	"AWG",
+	"AZN",
+	"BAM",
+	"BBD",
+	"BDT",
+	"BGN",
+	"BHD",
+	"BIF",
+	"BMD",
+	"BND",
+	"BOB",
+	"BRL",
+	"BSD",
+	"BTN",
+	"BWP",
+	"BYN",
+	"BZD",
+	"CAD",
+	"CDF",
+	"CHF",
+	"CLP",
+	"CNY",
+	"COP",
+	"CRC",
+	"CUP",
+	"CVE",
+	"CZK",
+	"DJF",
+	"DKK",
+	"DOP",
+	"DZD",
+	"EGP",
+	"ERN",
+	"ETB",
+	"EUR",
+	"FJD",
+	"FKP",
+	"FOK",
+	"GBP",
+	"GEL",
+	"GGP",
+	"GHS",
+	"GIP",
+	"GMD",
+	"GNF",
+	"GTQ",
+	"GYD",
+	"HKD",
+	"HNL",
+	"HRK",
+	"HTG",
+	"HUF",
+	"IDR",
+	"ILS",
+	"IMP",
+	"INR",
+	"IQD",
+	"IRR",
+	"ISK",
+	"JEP",
+	"JMD",
+	"JOD",
+	"JPY",
+	"KES",
+	"KGS",
+	"KHR",
+	"KID",
+	"KMF",
+	"KRW",
+	"KWD",
+	"KYD",
+	"KZT",
+	"LAK",
+	"LBP",
+	"LKR",
+	"LRD",
+	"LSL",
+	"LYD",
+	"MAD",
+	"MDL",
+	"MGA",
+	"MKD",
+	"MMK",
+	"MNT",
+	"MOP",
+	"MRU",
+	"MUR",
+	"MVR",
+	"MWK",
+	"MXN",
+	"MYR",
+	"MZN",
+	"NAD",
+	"NGN",
+	"NIO",
+	"NOK",
+	"NPR",
+	"NZD",
+	"OMR",
+	"PAB",
+	"PEN",
+	"PGK",
+	"PHP",
+	"PKR",
+	"PLN",
+	"PYG",
+	"QAR",
+	"RON",
+	"RSD",
+	"RUB",
+	"RWF",
+	"SAR",
+	"SBD",
+	"SCR",
+	"SDG",
+	"SEK",
+	"SGD",
+	"SHP",
+	"SLE",
+	"SLL",
+	"SOS",
+	"SRD",
+	"SSP",
+	"STN",
+	"SYP",
+	"SZL",
+	"THB",
+	"TJS",
+	"TMT",
+	"TND",
+	"TOP",
+	"TRY",
+	"TTD",
+	"TVD",
+	"TWD",
+	"TZS",
+	"UAH",
+	"UGX",
+	"UYU",
+	"UZS",
+	"VES",
+	"VND",
+	"VUV",
+	"WST",
+	"XAF",
+	"XCD",
+	"XDR",
+	"XOF",
+	"XPF",
+	"YER",
+	"ZAR",
+	"ZMW",
+	"ZWL",
+}
+
+var api_url = "https://open.er-api.com/v6/latest/"
+
+type Response struct {
+	Rates map[string]float64
+}
+
+// unitsCmd represents the units command
+var currencyCmd = &cobra.Command{
+	Use:     "currency",
+	Aliases: []string{"c", "money"},
+	Short:   "converts money",
+	Long:    `converts monee`,
+	Args:    cobra.MatchAll(cobra.ExactArgs(3), cobra.OnlyValidArgs),
+	ValidArgsFunction: func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) >= 2 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		return getCurrencyNames(toComplete), cobra.ShellCompDirectiveNoFileComp
+	},
+	RunE: func(cmd *cobra.Command, args []string) error {
+		currencyFrom := args[0]
+		currencyTo := args[1]
+		amount, err := strconv.ParseFloat(args[2], 64)
+		if err != nil {
+			return err
+		}
+		res, err := http.Get(api_url + currencyFrom)
+		if err != nil {
+			return err
+		}
+		defer res.Body.Close()
+		body, err := io.ReadAll(res.Body)
+		if err != nil {
+			return err
+		}
+		var response Response
+		json.Unmarshal(body, &response)
+		fmt.Println(response.Rates[currencyTo] * amount)
+		return nil
+	},
+}
+
+func getCurrencyNames(in string) []string {
+	out := []string{}
+	for _, name := range currencies {
+		if in == "" {
+			out = append(out, name)
+		} else {
+			if strings.HasPrefix(name, in) {
+				out = append(out, name)
+			}
+		}
+	}
+	return out
+}
+
+func init() {
+	rootCmd.AddCommand(currencyCmd)
+}