Introduction

CoinTools is a handy gadget to Chrome browser that you can launch easily to view the information of cryptocurrency.

Previous Contributions

• v0.0.7: CoinTools: Historical Conversion between Any Two Cryptocurrency
• v0.0.6: CoinTools Update: Show Full Cryptocurrency Details by Click or Startup, Add Language Handlers
• CoinTools v0.0.5: Update: Cryptocurrency Converter Calculator, Support Coin Symbols and Add More Localization
• CoinTools v0.0.4: Conversion Between Two Fiat or Fiat-Coin + 24 Hour Cap Chart
• CoinTools v0.0.3: Adding Total Market Cap USD Chart, Localization and Stock Price Emoji
• v0.0.2 Cryptocurrency Conversion + UI Localization
• v0.0.1 Introduction to CoinTools! A Cryptocurrency Chrome Extension

Technology Stacks

Javascript that runs in Chrome.

Github

https://github.com/DoctorLai/CoinTools

Chrome Webstore

It is available online at Chrome Webstore:
https://chrome.google.com/webstore/detail/coin-tools/fmglcggbdcbkpkfapngjobfeakehpcgj

v0.0.8 Feature

This version adds the following features:

1. Add Coinbase API to convert from FIAT to FIAT.
2. Customize Period of History Data
3. Adds Russian UI translation.
4. Support single FIAT command

Screenshots

Commits

Here and here

Roadmap of CoinTools

Any good suggestions, please shout at @justyy.

Coinbase API

Get Exchange Rate from two Fiats.

// ajax calling coinbase to return fiat conversion
const getPriceOf_Coinbase_Fiat = (a, b) => {
    return new Promise((resolve, reject) => {
        let api = 'https://api.coinbase.com/v2/exchange-rates/?currency=' + a.toUpperCase();
        fetch(api, {mode: 'cors'}).then(validateResponse).then(readResponseAsJSON).then(function(result) {
            let data = result.data.rates;
            resolve(data[b.toUpperCase()]);
        }).catch(function(error) {
            logit('Request failed: ' + api + ": " + error);
            reject(error);
        });
    });
}

Then, you can use it:

    // both are currencies e.g. USD to CNY
    if ((!is_coin1) && (!is_coin2)) {
        try {
            return await getPriceOf_Coinbase_Fiat(coin1, coin2);
        } catch (e) { // if anything goes wrong with above coinbase, then use coinmarkecap (two API calls)
            let api1 = getPriceOf1BTC(coin1);        
            let api2 = getPriceOf1BTC(coin2);
            return await api2 / await api1;
        }
    }

If anything goes wrong with above coinbase, then use coinmarkecap (two API calls)

License

MIT

Contribution Welcome

Github: https://github.com/DoctorLai/CoinTools/

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature
5. Submit a pull request.

Chrome Webstore

Install the CoinTools Now!

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Posted on Utopian.io - Rewarding Open Source Contributors

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