321 lines
9.4 KiB
Bash
Executable File
321 lines
9.4 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Original Author: Jonas-Taha El Sesiy https://github.com/elsesiy
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# Modifications: Alexander Epstein
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unset base
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unset exchangeTo
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old="false"
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currentVersion="1.22.1"
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unset configuredClient
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## This function determines which http get tool the system has installed and returns an error if there isnt one
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getConfiguredClient()
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{
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if command -v curl &>/dev/null; then
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configuredClient="curl"
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elif command -v wget &>/dev/null; then
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configuredClient="wget"
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elif command -v http &>/dev/null; then
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configuredClient="httpie"
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elif command -v fetch &>/dev/null; then
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configuredClient="fetch"
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else
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echo "Error: This tool reqires either curl, wget, httpie or fetch to be installed." >&2
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return 1
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fi
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}
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## Allows to call the users configured client without if statements everywhere
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httpGet()
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{
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case "$configuredClient" in
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curl) curl -A curl -s "$@" ;;
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wget) wget -qO- "$@" ;;
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httpie) http -b GET "$@" ;;
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fetch) fetch -q "$@" ;;
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esac
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}
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## Top 10 cryptocurrencies as base
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checkValidCurrency()
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{
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if [[ $1 != "BTC" && $1 != "ETH" \
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&& $1 != "XRP" && $1 != "LTC" && $1 != "XEM" \
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&& $1 != "ETC" && $1 != "DASH" && $1 != "MIOTA" \
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&& $1 != "XMR" && $1 != "STRAT" && $1 != "BCH" ]]; then
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echo "1"
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else
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echo "0"
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fi
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}
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checkTargetCurrency()
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{
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if [[ $1 != "AUD" && $1 != "BRL" \
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&& $1 != "CAD" && $1 != "CHF" && $1 != "CNY" \
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&& $1 != "EUR" && $1 != "GBP" && $1 != "HKD" \
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&& $1 != "IDR" && $1 != "INR" && $1 != "JPY" && $1 != "KRW" \
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&& $1 != "MXN" && $1 != "RUB" && $1 != "USD" ]]; then
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echo "1"
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else
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echo "0"
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fi
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}
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## Grabs the base currency from the user and validates it with all the possible currency
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## types available on the API and guides user through input (doesnt take in arguments)
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getBase()
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{
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echo -n "What is the base currency: "
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read -r base
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base=$(echo $base | tr /a-z/ /A-Z/)
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if [[ $(checkValidCurrency $base) == "1" ]]; then
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unset base
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echo "Invalid base currency"
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getBase
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fi
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}
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## Checks base currency from the user and validates it with all the possible currency
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## types available on the API (requires argument)
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checkBase()
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{
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base=$1
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base=$(echo $base | tr /a-z/ /A-Z/)
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if [[ $(checkValidCurrency $base) == "1" ]]; then
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unset base
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echo "Invalid base currency"
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exit 1
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fi
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}
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# Matches the symbol to the appropriate ids regarding the API calling.
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transformBase()
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{
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case "$base" in
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"ETH") reqId="ethereum" ;;
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"BTC") reqId="bitcoin" ;;
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"XRP") reqId="ripple" ;;
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"LTC") reqId="litecoin" ;;
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"XEM") reqId="nem" ;;
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"ETC") reqId="ethereum-classic" ;;
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"DASH") reqId="dash" ;;
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"MIOTA") reqId="iota" ;;
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"XMR") reqId="monero" ;;
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"STRAT") reqId="stratis" ;;
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"BCH") reqId="bitcoin-cash" ;;
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esac
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}
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## Grabs the exchange to currency from the user and validates it with all the possible currency
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## types available on the API and guides user through input (doesnt take in arguments)
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getExchangeTo()
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{
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echo -n "What currency to exchange to: "
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read -r exchangeTo
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exchangeTo=$(echo $exchangeTo | tr /a-z/ /A-Z/)
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if [[ $(checkTargetCurrency $exchangeTo) == "1" ]]; then
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echo "Invalid exchange currency"
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unset exchangeTo
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getExchangeTo
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fi
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}
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## Grabs the exchange to currency from the user and validates it with all the possible currency
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## types available on the API (requires arguments)
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checkExchangeTo()
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{
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exchangeTo=$1
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exchangeTo=$(echo $exchangeTo | tr /a-z/ /A-Z/)
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if [[ $(checkTargetCurrency $exchangeTo) == "1" ]]; then
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echo "Invalid exchange currency"
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unset exchangeTo
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exit 1
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fi
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}
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## Get the amount that will be exchanged and validate that the user has entered a number (decimals are allowed)
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## doesnt take in argument, it guides user through input
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getAmount()
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{
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echo -n "What is the amount being exchanged: "
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read -r amount
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if [[ ! "$amount" =~ ^[0-9]+(\.[0-9]+)?$ ]]; then
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echo "The amount has to be a number"
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unset amount
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getAmount
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fi
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}
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## Get the amount that will be exchanged
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## validate that the user has entered a number (decimals are allowed and requires argument)
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checkAmount()
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{
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amount=$1
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if [[ ! "$amount" =~ ^[0-9]+(\.[0-9]+)?$ ]]; then
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echo "The amount has to be a number"
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unset amount
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exit 1
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fi
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}
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checkInternet()
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{
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httpGet github.com > /dev/null 2>&1 || { echo "Error: no active internet connection" >&2; return 1; } # query github with a get request
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}
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## Grabs the exchange rate and does the math for converting the currency
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convertCurrency()
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{
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exchangeTo=$(echo "$exchangeTo" | tr '[:upper:]' '[:lower:]')
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exchangeRate=$(httpGet "https://api.coinmarketcap.com/v1/ticker/$reqId/?convert=$exchangeTo" | grep -Eo "\"price_$exchangeTo\": \"[0-9 .]*" | sed s/"\"price_$exchangeTo\": \""//g) > /dev/null
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if ! command -v bc &>/dev/null; then
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oldRate=$exchangeRate
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exchangeRate=$(echo $exchangeRate | grep -Eo "^[0-9]*" )
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amount=$(echo $amount | grep -Eo "^[0-9]*" )
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exchangeAmount=$(( $exchangeRate * $amount ))
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exchangeRate=$oldRate
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else
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exchangeAmount=$( echo "$exchangeRate * $amount" | bc )
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fi
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exchangeTo=$(echo "$exchangeTo" | tr '[:lower:]' '[:upper:]')
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cat <<EOF
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=========================
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| $base to $exchangeTo
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| Rate: $exchangeRate
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| $base: $amount
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| $exchangeTo: $exchangeAmount
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=========================
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EOF
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}
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update()
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{
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# Author: Alexander Epstein https://github.com/alexanderepstein
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# Update utility version 2.2.0
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# To test the tool enter in the defualt values that are in the examples for each variable
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repositoryName="Bash-Snippets" #Name of repostiory to be updated ex. Sandman-Lite
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githubUserName="alexanderepstein" #username that hosts the repostiory ex. alexanderepstein
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nameOfInstallFile="install.sh" # change this if the installer file has a different name be sure to include file extension if there is one
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latestVersion=$(httpGet https://api.github.com/repos/$githubUserName/$repositoryName/tags | grep -Eo '"name":.*?[^\\]",'| head -1 | grep -Eo "[0-9.]+" ) #always grabs the tag without the v option
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if [[ $currentVersion == "" || $repositoryName == "" || $githubUserName == "" || $nameOfInstallFile == "" ]]; then
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echo "Error: update utility has not been configured correctly." >&2
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exit 1
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elif [[ $latestVersion == "" ]]; then
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echo "Error: no active internet connection" >&2
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exit 1
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else
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if [[ "$latestVersion" != "$currentVersion" ]]; then
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echo "Version $latestVersion available"
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echo -n "Do you wish to update $repositoryName [Y/n]: "
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read -r answer
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if [[ "$answer" == [Yy] ]]; then
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cd ~ || { echo 'Update Failed'; exit 1; }
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if [[ -d ~/$repositoryName ]]; then rm -r -f $repositoryName || { echo "Permissions Error: try running the update as sudo"; exit 1; } ; fi
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echo -n "Downloading latest version of: $repositoryName."
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git clone -q "https://github.com/$githubUserName/$repositoryName" && touch .BSnippetsHiddenFile || { echo "Failure!"; exit 1; } &
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while [ ! -f .BSnippetsHiddenFile ]; do { echo -n "."; sleep 2; };done
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rm -f .BSnippetsHiddenFile
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echo "Success!"
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cd $repositoryName || { echo 'Update Failed'; exit 1; }
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git checkout "v$latestVersion" 2> /dev/null || git checkout "$latestVersion" 2> /dev/null || echo "Couldn't git checkout to stable release, updating to latest commit."
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chmod a+x install.sh #this might be necessary in your case but wasnt in mine.
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./$nameOfInstallFile "update" || exit 1
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cd ..
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rm -r -f $repositoryName || { echo "Permissions Error: update succesfull but cannot delete temp files located at ~/$repositoryName delete this directory with sudo"; exit 1; }
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else
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exit 1
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fi
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else
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echo "$repositoryName is already the latest version"
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fi
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fi
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}
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usage()
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{
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cat <<EOF
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CryptoCurrency
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Description: A realtime cryptocurrency converter.
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With no flags it will pull down the latest stats of the top 10 cryptos
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Usage: cryptocurrency or cryptocurrency [flag] or cryptocurrency [flag] [arg]
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-o Utilize the old functionality of the tool
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-f Fiat currency for conversions
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-u Update Bash-Snippet Tools
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-h Show the help
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-v Get the tool version
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EOF
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}
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while getopts "c:of:uvh" opt; do
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case "$opt" in
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\?) echo "Invalid option: -$OPTARG" >&2
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exit 1
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;;
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c)
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currency=$OPTARG
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;;
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h) usage
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exit 0
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;;
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f)
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fiat=$OPTARG
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;;
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o)
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old="true"
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;;
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v) echo "Version $currentVersion"
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exit 0
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;;
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u) checkInternet || exit 1 # check if we have a valid internet connection if this isnt true the rest of the script will not work so stop here
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update
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exit 0
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;;
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:) echo "Option -$OPTARG requires an argument." >&2
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exit 1
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;;
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esac
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done
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if $old;then
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getConfiguredClient || exit 1
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getBase # get base currency
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getExchangeTo # get exchange to currency
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getAmount # get the amount to be converted
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transformBase
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convertCurrency # grab the exhange rate and perform the conversion
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exit 0
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fi
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if [[ $1 == "update" ]]; then
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getConfiguredClient || exit 1
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checkInternet || exit 1 # check if we have a valid internet connection if this isnt true the rest of the script will not work so stop here
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update
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exit 0
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elif [[ $1 == "help" ]]; then
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usage
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exit 0
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fi
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getConfiguredClient || exit 1
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checkInternet || exit 1
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link="rate.sx"
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if [[ $fiat =~ [a-zA-Z] ]]; then
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link="$fiat.$link"
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fi
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if [[ $currency =~ [a-zA-Z] ]]; then
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link="$link/$currency"
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fi
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httpGet $link
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