diff --git a/.env b/.env new file mode 100644 index 0000000..eb8ab72 --- /dev/null +++ b/.env @@ -0,0 +1 @@ +ALPHA_VANTAGE_API_URL=https://www.alphavantage.co/query \ No newline at end of file diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..76fb2e5 --- /dev/null +++ b/.gitignore @@ -0,0 +1,3 @@ +.idea +node_modules +dist \ No newline at end of file diff --git a/.prettierignore b/.prettierignore new file mode 100644 index 0000000..2d2b47d --- /dev/null +++ b/.prettierignore @@ -0,0 +1,2 @@ +.idea +node_modules \ No newline at end of file diff --git a/.ttrc b/.ttrc new file mode 100644 index 0000000..e7f062d --- /dev/null +++ b/.ttrc @@ -0,0 +1,4 @@ +{ + "apiKey": "", + "exchange": "BSE" +} \ No newline at end of file diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 0000000..88d7d1f --- /dev/null +++ b/Dockerfile @@ -0,0 +1,20 @@ +# Use the official Node.js image as the base image +FROM node:14-alpine + +# Create a new directory to hold our application code +WORKDIR /app + +# Copy package.json and package-lock.json files into the container +COPY package*.json ./ + +# Install the dependencies +RUN npm install + +# Copy the rest of the application code into the container +COPY . . + +# Build the TypeScript code +RUN npm run build + +# Set the entrypoint to run the CLI +ENTRYPOINT ["node", "dist/index.js"] \ No newline at end of file diff --git a/README.md b/README.md index 8ff709d..269d135 100644 --- a/README.md +++ b/README.md @@ -1,181 +1,81 @@ -# Tilli Node.js Developer Challenge +# Tilli Ticker -Thank you for your interest in Tilli! The following coding challenge should take no longer than 2-3 hours. Please feel free to reach out for any clarification on the requirements presented below. +```tt``` is a CLI application that fetches stock details from the Alpha Vantage API. It allows you to track stocks and view summary statistics for any stock symbol and exchange supported by the API. -## Getting started +## Installation +Install the dependencies using ```cd node-developer-challenge && npm i``` -Fork this repository and use your fork to build the challenge. When you've finished and all of your work is pushed, let us know so that we can review (you can also submit a PR back to this repo to notify). - -## Terminology - -| Term | Description | AKA | Example(s) | -| :----------------- | :------------------------ | --- | ------- | -| Stock symbol | A unique series of letters assigned to a stock for trading purposes (e.g. AAPL for Apple Inc.) | Stock ticker, Ticker symbol | AAPL (Apple Inc.) | -| Exchange | A market where financial securities such as stocks, bonds, and commodities are traded. | Stock exchange | NASDAQ, NYSE, NSE | - -## The challenge - -Your task is to create an interactive Node.js CLI application that will show summary statistics for requested stock ticker symbols using the [Alpha Vantage](https://www.alphavantage.co/documentation/) API. The interactive CLI app will require managing and persisting state, processing input arguments, and showing interactive prompts and follow up prompts depending on the inputs. The application should be able to handle the below requirements for any amount of stock symbols on any exchange supported via the Alpha Vantage API. - -### Features - -The output below is a stubbed version of the helper text (`-h` flag, though the actual output below is more representative of a `man` page) for the application. Flags in the `OPTIONS` section correspond with features. The interactive CLI app should be able to parse incoming arguments and generate interactive prompts to fill in missing information. - -Some sections are deliberately left incomplete (they will be marked via `[STUBBED]`); your final submission should also include updated documentation. - -Any implementation details that have not been included have been deliberately left out for you to create your own solution. - -```zsh -> tt -h - -# output -NAME - tt - tilli ticker - -SYNOPSIS - tt [-x exchange] [-a api-key] [-c config-file] [exchange:]ticker - -DESCRIPTION - tt a CLI app that allows you to continuously track stocks using the AlphaVantage API. An AlphaVantage API key is needed to use this utility. - -OPTIONS - -x exchange - Specific stock exchange to use when doing the stock symbol lookup. This can be appended to the ticker argument directly by preceding the ticker argument with the exchange plus ":" (e.g. NASDAQ:AAPL) Throws if the exchange does not exist or if the stock symbol is not found on the exchange. - - -a api-key - Use specified AlphaVantage API key. If no global config present or global config has no API key then interactive mode will launch to query the user for an API key. - - -v View the stock summary stats for the current day once found or chosen. Is inferred to be true if the -s flag is not present. - - -s Save the stock symbol and its summary statistics. - - -l View all saved stocks. - - -d Delete a saved stock symbol. - - -h View command usage. - -FILES - ~/.ttrc - The global configuration file. - -DIAGNOSTICS - The following diagnostics may be issued on stderr: - - Rate limit exceeded. - The API key used in the configuration has gone past the rate limit set by the AlphaVantage API. Please either wait for a new rate period or upgrade your API key. - [STUBBED] - add additional potential diagnostics for errors here - -AUTHOR - [STUBBED] - make sure to sign your code! +```sh +npm run build +npm link ``` -### Interactive mode +This command will link our package to the global npm directory on the local machine, allowing us to use the ```tt``` command directly. -The CLI app should launch interactive mode whenever additional input is needed from the user. Below is a diagram showing some of the code paths taken by interactive mode and how certain paths can be skipped via arguments being passed in. +## Usage +To use ```tt```, run the following command: -```mermaid -flowchart TD - init[Invoke with `tt`] - - apiKey[Input API Key] - - exchange[Input stock exchange] - - ticker[Input ticker] - - listAll[[1.View specific stock\n2.Save specific stock\n3.View and save a specific stock\n4.List all saved stocks\n5.Delete a saved stock]] - - view[View stock] - - listStocks[List stocks] - - save[Save stock] - - delete[Delete stock] - - init-- "tt" ---->apiKey-->ticker---->exchange---->listAll - linkStyle 0 stroke:#fff - linkStyle 1 stroke:#fff - linkStyle 2 stroke:#fff - linkStyle 3 stroke:#fff - - init-- "tt ticker" --->apiKey-->exchange-->listAll - linkStyle 4 stroke:#ff3 - linkStyle 5 stroke:#ff3 - linkStyle 6 stroke:#ff3 - - init-- "tt -x [exchange]" -->apiKey-->ticker-->listAll - linkStyle 7 stroke:#f3f - linkStyle 8 stroke:#f3f - linkStyle 9 stroke:#f3f - - init-- "tt -a [api-key]" -->ticker-->exchange-->listAll - linkStyle 10 stroke:#3ff - linkStyle 11 stroke:#3ff - linkStyle 12 stroke:#3ff - - init-- "tt -a [api-key] ticker" --------->exchange-->listAll - linkStyle 13 stroke:#f33 - linkStyle 14 stroke:#f33 - - init-- "tt -x [exchange] ticker" -->apiKey-->listAll - linkStyle 15 stroke:#33f - linkStyle 16 stroke:#33f +``` +tt [options] exchange:ticker +``` - init-- "tt -x [exchange] -a [api-key] ticker" -->listAll - linkStyle 17 stroke:#999 +The [options] argument is optional and specifies how you want to interact with tt CLI. The ```exchange:ticker``` specifies the exchange and stock symbol . If you do not specify an exchange, CLI will enter the interactive mode. - init-- "tt -x [exchange] \ \n-a [api-key] -s ticker" -->save - linkStyle 18 stroke: #f9f +# Options +- -x, --exchange: Specifies the stock exchange to use when looking up the stock symbol. You can append the exchange directly to the ticker argument by preceding it with the exchange plus ":" (e.g. NASDAQ:AAPL). This option throws an error if the exchange does not exist or if the stock symbol is not found on the exchange. +- -a, --apiKey: Specifies the AlphaVantage API key to use. If there is no global config present or the global config has no API key, tt will launch interactive mode to query the user for an API key. +- -v, --view: Displays the stock summary statistics for the current day once found or chosen. This option is inferred to be true if the -s flag is not present. +- -s, --save: Saves the stock symbol and its summary statistics. +- -l, --list: Displays all saved stocks. +- -d, --delete: Deletes a saved stock symbol. +- -c, --configFile: Specifies the configuration file to use. +- -h, --help: Displays the help for the command. - init-- "tt -x [exchange] \ \n-a [api-key] -s -v ticker"-->save-->view - linkStyle 19 stroke:#f99 - linkStyle 20 stroke:#f99 +# Config FILES + `tt -c .ttrc` + The global configuration file. - init-- "tt -x [exchange] \ \n-a [api-key] -v ticker" -->view - linkStyle 21 stroke:#99f +# Diagnostics +The following diagnostics may be issued on stderr: - init-- "tt -x [exchange] \ \n-a [api-key] -l ticker" -->listStocks - linkStyle 22 stroke:#9f9 +- Rate limit exceeded.: The API key used in the configuration has gone past the rate limit set by the AlphaVantage API. Please wait for a new rate period or upgrade your API key. +- Invalid API key.: The provided API key is invalid or has been revoked. Please check your API key and try again. +- Stock symbol not found.: The specified stock symbol could not be found. Please verify the stock symbol and try again. +- Stock exchange not supported.: The specified stock exchange is not supported by the AlphaVantage API. Please check the exchange abbreviation and try again. +- Configuration file error.: An error occurred while reading or parsing the configuration file. Please verify the contents of the configuration file and try again. - init-- "tt -x [exchange] \ \n-a [api-key] -d ticker" -->delete - linkStyle 23 stroke:#6f6 +# Examples - listAll-- "3" -->save-->view - linkStyle 24 stroke:#f22 - linkStyle 25 stroke:#f22 +View Help - listAll-- "1" -->view - listAll-- "2" -->save - listAll-- "4" -->listStocks - listAll-- "5" -->delete +```sh +tt --help ``` -## Evaluation criteria - -- UX of the interactive mode of the CLI -- Argument processing -- Caching strategies -- State management -- Error management -- Code hygiene -- Documentation -- Secrets management -- Clean git history +![img.png](docs/imgs/img.png) -## Extra credit - -> Doing any of the below will help your application (if *done well*) but your strength as a candidate is only measured using the tangibles above. +Enter Interactive Mode +``` +tt +``` +![img.png](docs/imgs/img_0.png) -- use TypeScript -- add unit tests -- create a build process for distribution +View and save the ticker. +``` + tt -s -v IDEA +``` -## Some additional notes +![img.png](docs/imgs/img_1.png) -Certain implementation details have been **deliberately** left out in order to gauge your ability to fill in the gaps. Don't be afraid to ask questions, but also don't be surprised if for certain questions the response is that it's up to you to determine that. +Following Exchange & Tickers can be used to test the application Quickly. -There are no reservations about libraries that you use, and it is definitely recommended that you use one (or multiple) of the many CLI tooling packages in the js ecosystem in order to focus on building the functionality rather than the barebones CLI portion of this application. +- exchange ``BSE`` -Make sure to review all of the evaluation criteria! These are the exact points you will be judged on. \ No newline at end of file +- Tickers +`` +RELIANCE +TATAPOWER +IRCTC +IDEA +ZEELEARN +`` \ No newline at end of file diff --git a/docs/imgs/img.png b/docs/imgs/img.png new file mode 100644 index 0000000..66a0bd6 Binary files /dev/null and b/docs/imgs/img.png differ diff --git a/docs/imgs/img_0.png b/docs/imgs/img_0.png new file mode 100644 index 0000000..b65063b Binary files /dev/null and b/docs/imgs/img_0.png differ diff --git a/docs/imgs/img_1.png b/docs/imgs/img_1.png new file mode 100644 index 0000000..9592b81 Binary files /dev/null and b/docs/imgs/img_1.png differ diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..16553dc --- /dev/null +++ b/package-lock.json @@ -0,0 +1,1533 @@ +{ + "name": "tilli-ticker", + "version": "1.0.0", + "lockfileVersion": 2, + "requires": true, + "packages": { + "": { + "name": "tilli-ticker", + "version": "1.0.0", + "license": "ISC", + "dependencies": { + "axios": 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+ "options": { + "parser": "typescript" + } + } + ] + }, + "scripts": { + "start": "nodemon --no-stdin src/index.ts", + "build": "tsc", + "prettier": "prettier --write \"src/**/*.ts\"", + "test": "echo \"Error: no test specified\" && exit 1" + }, + "repository": { + "type": "git", + "url": "git+https://github.com/backendsuraj/node-developer-challenge.git" + }, + "bugs": { + "url": "https://github.com/backendsuraj/node-developer-challenge/issues" + }, + "homepage": "https://github.com/backendsuraj/node-developer-challenge#readme", + "author": "backendsuraj@gmail.com", + "license": "ISC", + "dependencies": { + "axios": "^1.3.4", + "chalk": "^4.1.2", + "cli-table3": "^0.6.3", + "commander": "^10.0.0", + "dotenv": "^16.0.3", + "figlet": "^1.5.2", + "nanospinner": "^1.1.0", + "prompts": "^2.4.2" + }, + "devDependencies": { + "@types/figlet": "^1.5.5", + "@types/prompts": "^2.4.4", + "nodemon": "^2.0.22", + "prettier": "2.8.7", + "ts-node": "^10.9.1", + "typescript": "^5.0.2" + } +} diff --git a/src/constants/index.ts b/src/constants/index.ts new file mode 100644 index 0000000..471a372 --- /dev/null +++ b/src/constants/index.ts @@ -0,0 +1,63 @@ +import chalk from 'chalk'; + +export const THEME = { + GREEN: '#2CC88D', + PURPLE: '#573280', + DARK_BLUE: '#011638', + DEEP_BLUE: '#020119', + STEEL_BLUE: '#3F88C5', + RED: '#e61351', + ORANGE: '#EAA24E', + WHITE: '#FFF', + RED_STOCK: '#f93c3c', + GREEN_STOCK: '#00b457', +}; + +export const StockExchanges = [ + { title: 'New York Stock Exchange (NYSE)', value: 'NYSE' }, + { title: 'NASDAQ', value: 'NASDAQ' }, + { title: 'London Stock Exchange (LSE)', value: 'LSE' }, + { title: 'Bombay Stock Exchange (BSE)', value: 'BSE' }, + { title: 'National Stock Exchange of India (NSE)', value: 'NSE' }, + { title: 'Singapore Exchange (SGX)', value: 'SGX' }, + { title: chalk.hex(THEME.STEEL_BLUE)('Enter Manually...'), value: null }, +]; + +export const InteractivePrompts = [ + { title: 'View Ticker', value: 'view' }, + { title: 'Save Ticker', value: 'save' }, + { title: 'View & Save Ticker', value: 'viewAndSave' }, + { title: 'List All Tickers', value: 'list' }, + { title: chalk.hex(THEME.RED)('Delete Current Ticker'), value: 'delete' }, + { title: chalk.hex(THEME.GREEN)('Change Ticker?'), value: 'changeTicker' }, + { title: chalk.hex(THEME.ORANGE)('Exit!'), value: null }, +]; + +export const CLI_DESCRIPTION = `DESCRIPTION: + tt a CLI app that allows you to continuously track stocks using the AlphaVantage API. An AlphaVantage API key is needed to use this utility.`; + +export const FILE_CONFIG_DESC = `FILES + .ttrc + The global configuration file.`; + +export const CLI_CONFIG_START_MSG = `It's time to set up the CLI!`; +export const CLI_CONFIG_FINISH_MSG = `Awesome! You're now ready to unleash the power of the CLI!`; +export const EXIT_CLI_MSG = `Thank you for using our CLI tool. Have a great day!`; + +export const DIAGNOSTIC_MSG = `DIAGNOSTICS: + The following diagnostics may be issued on stderr: + + Rate limit exceeded. + The API key used in the configuration has gone past the rate limit set by the AlphaVantage API. \n Please either wait for a new rate period or upgrade your API key. + + Invalid API key. + The provided API key is invalid or has been revoked. Please check your API key and try again. + + Stock symbol not found. + The specified stock symbol could not be found. Please verify the stock symbol and try again. + + Stock exchange not supported. + The specified stock exchange is not supported by the AlphaVantage API. \n Please check the exchange abbreviation and try again. + + Configuration file error. + An error occurred while reading or parsing the configuration file. Please verify the contents of the configuration file and try again.`; diff --git a/src/core/alpha-vantage.ts b/src/core/alpha-vantage.ts new file mode 100644 index 0000000..0c75991 --- /dev/null +++ b/src/core/alpha-vantage.ts @@ -0,0 +1,79 @@ +import axios, { AxiosInstance } from 'axios'; +import ApplicationState from '../core/state'; +import { AlphaVantageApiResponse } from 'index'; +import * as process from 'process'; + +export class AlphaVantageAPIError extends Error {} + +class AlphaVantageService { + private readonly apiKey: string; + private readonly apiUrl: string; + private readonly axiosInstance: AxiosInstance; + private applicationState: ApplicationState; + + constructor(apiKey: string) { + this.applicationState = ApplicationState.getInstance(); + this.apiKey = apiKey; + this.apiUrl = process.env.ALPHA_VANTAGE_API_URL; + this.axiosInstance = axios.create({ + baseURL: this.apiUrl, + timeout: 5000, + }); + } + + async getStockInfo(symbol: string) { + try { + //check in local cache if we already fetched! + let checkCacheForSymbol = this.applicationState.getFromCache(symbol); + if (checkCacheForSymbol) { + return checkCacheForSymbol; + } + + const response = await this.axiosInstance.get('', { + params: { + function: 'GLOBAL_QUOTE', + symbol: symbol, + apikey: this.apiKey, + }, + }); + + this.handleAlphaVantageErrors(response); + + const data = response.data['Global Quote']; + let apiResponse: AlphaVantageApiResponse = { + symbol: data['01. symbol'], + date: data['07. latest trading day'], + open: parseFloat(data['02. open']), + high: parseFloat(data['03. high']), + low: parseFloat(data['04. low']), + price: parseFloat(data['05. price']), + change: parseFloat(data['09. change']), + volume: parseInt(data['06. volume']), + }; + await this.applicationState.addToCache(symbol, apiResponse); + return apiResponse; + } catch (error) { + throw error; + } + } + + private handleAlphaVantageErrors(response) { + if (response.data['Error Message']) { + const errorMessage = response.data['Error Message']; + if (errorMessage.toLowerCase().includes('invalid')) { + throw new AlphaVantageAPIError('Invalid symbol or API key'); + } else if (errorMessage.toLowerCase().includes('rate limit exceeded')) { + throw new AlphaVantageAPIError('API rate limit exceeded'); + } else { + throw new AlphaVantageAPIError(errorMessage); + } + } + if (response.data['Note']) { + const note = response.data['Note']; + throw new AlphaVantageAPIError(`API usage limit reached: ${note}`); + } + return true; + } +} + +export default AlphaVantageService; diff --git a/src/core/state.ts b/src/core/state.ts new file mode 100644 index 0000000..e765230 --- /dev/null +++ b/src/core/state.ts @@ -0,0 +1,85 @@ +class ApplicationState { + private static instance: ApplicationState; + + exchange: string; + apiKey: string; + ticker: string; + stockData: Record; + cache: Record; + + private constructor( + exchange: string, + apiKey: string, + ticker: string, + stockData: Record + ) { + this.exchange = exchange; + this.apiKey = apiKey; + this.ticker = ticker; + this.stockData = stockData; + this.cache = {}; + } + + public static getInstance(): ApplicationState { + if (!ApplicationState.instance) { + ApplicationState.instance = new ApplicationState('', '', '', {}); + } + return ApplicationState.instance; + } + + public setExchange(exchange: string) { + this.exchange = exchange; + } + + public setApiKey(apiKey: string) { + this.apiKey = apiKey; + } + + public setTicker(ticker: string) { + this.ticker = ticker; + } + + public setStockData( + exchange: string, + ticker: string, + stockData: Record + ) { + if (!this.stockData[exchange]) { + this.stockData[exchange] = {}; + } + this.stockData[exchange][ticker] = stockData; + } + + public getStocksByExchange(exchange: string) { + return this.stockData[exchange]; + } + + public deleteStockByExchange(exchange: string, ticker: string) { + if (this.stockData[exchange]) { + delete this.stockData[exchange][ticker]; + } + } + + public getProperty(propertyName: string): any { + return this[propertyName]; + } + + public addToCache(key: string, value: any) { + this.cache[key] = value; + } + + public getFromCache(key: string): any { + return this.cache[key]; + } + + public getState(): Record { + return { + exchange: this.exchange, + apiKey: this.apiKey, + ticker: this.ticker, + stockData: this.stockData, + }; + } +} + +export default ApplicationState; diff --git a/src/index.ts b/src/index.ts new file mode 100644 index 0000000..3f61fc5 --- /dev/null +++ b/src/index.ts @@ -0,0 +1,74 @@ +#!/usr/bin/env node +import * as dotenv from 'dotenv'; +dotenv.config({ path: '.env' }); +import { Command } from 'commander'; +import chalk from 'chalk'; +import figlet from 'figlet'; +import { spacer } from './utils'; +import { + THEME, + DIAGNOSTIC_MSG, + CLI_DESCRIPTION, + FILE_CONFIG_DESC, +} from './constants'; +import Prompter from './prompter'; +import { CommanderOptions } from './types'; + +class TilliTicker { + init() { + console.log( + chalk.bgHex(THEME.DEEP_BLUE).hex(THEME.RED)( + figlet.textSync('Tilli Ticker', { + horizontalLayout: 'full', + }) + ) + ); + + spacer(); + + const program = new Command(); + program + .name(chalk.bgHex(THEME.DARK_BLUE)(`tt`)) + .usage( + chalk.bgHex(THEME.DARK_BLUE)( + '[-x exchange] [-a api-key] [-c config-file] [exchange:]ticker' + ) + ) + .option( + '-x, --exchange', + `Specific stock exchange to use when doing the stock symbol lookup. This can be appended to the ticker argument directly by preceding the ticker argument with the exchange plus ":" (e.g. NASDAQ:AAPL) Throws if the exchange does not exist or if the stock symbol is not found on the exchange.` + ) + .option( + '-a, --apiKey', + 'Use specified AlphaVantage API key. If no global config present or global config has no API key then interactive mode will launch to query the user for an API key.' + ) + .option( + '-v, --view', + 'View the stock summary stats for the current day once found or chosen. Is inferred to be true if the -s flag is not present.' + ) + .option('-s, --save', 'Save the stock symbol and its summary statistics.') + .option('-l, --list', 'View all saved stocks.') + .option('-d, --delete', 'Delete a saved stock symbol.') + .option( + '-c, --configFile ', + 'Specify the configuration file to use.' + ) + .argument('[ticker]') + .on('--help', () => { + spacer(); + console.log(chalk.bgHex(THEME.DARK_BLUE)(CLI_DESCRIPTION)); + spacer(); + console.log(FILE_CONFIG_DESC); + spacer(); + console.log(chalk.hex(THEME.ORANGE)(DIAGNOSTIC_MSG)); + spacer(); + }); + program.parse(process.argv); + const options: CommanderOptions = program.opts(); + options.ticker = program.processedArgs.pop(); + const prompter = new Prompter(options); + } +} + +const tilliTicker = new TilliTicker(); +tilliTicker.init(); diff --git a/src/prompter/actions.ts b/src/prompter/actions.ts new file mode 100644 index 0000000..68f2915 --- /dev/null +++ b/src/prompter/actions.ts @@ -0,0 +1,113 @@ +import ApplicationState from '../core/state'; +import AlphaVantageService, { + AlphaVantageAPIError, +} from '../core/alpha-vantage'; +import { createSpinner } from 'nanospinner'; +import { displayStockDetails, logError, spacer } from '../utils'; + +export class InteractivePromptsHandler { + private applicationState: ApplicationState; + private alphaVantageService: AlphaVantageService; + + constructor() { + this.applicationState = ApplicationState.getInstance(); + this.alphaVantageService = new AlphaVantageService( + this.applicationState.getProperty('apiKey') + ); + } + + public async handleSelectedOption(selectedOption: string) { + switch (selectedOption) { + case 'view': + await this.handleView(); + break; + case 'save': + await this.handleSave(); + break; + case 'viewAndSave': + await this.handleView(); + await this.handleSave(); + break; + case 'list': + await this.handleList(); + break; + case 'delete': + await this.handleDelete(); + break; + default: + break; + } + } + + private async handleView() { + try { + let spin = createSpinner('Loading...'); + spacer(); + let { ticker, exchange } = this.applicationState.getState(); + let getTickerInfo = await this.alphaVantageService.getStockInfo( + `${ticker}.${exchange}` + ); + spin.success({ text: 'Loaded' }); + displayStockDetails([getTickerInfo]); + return true; + } catch (e) { + if (e instanceof AlphaVantageAPIError) { + logError(`Alpha Vantage API error: ${e.message}`); + } else { + logError(`Unexpected error: ${e.message}`); + } + } + } + + private async handleSave() { + try { + let spin = createSpinner('Processing...'); + spacer(); + const { ticker, exchange } = this.applicationState.getState(); + let getTickerInfo = await this.alphaVantageService.getStockInfo( + `${ticker}.${exchange}` + ); + this.applicationState.setStockData(exchange, ticker, getTickerInfo); + spin.success({ text: 'Done....' }); + spacer(); + return true; + } catch (e) { + if (e instanceof AlphaVantageAPIError) { + logError(`Alpha Vantage API error: ${e.message}`); + } else { + logError(`Unexpected error: ${e.message}`); + } + } + } + + private async handleList() { + try { + let spin = createSpinner('Loading...'); + spacer(); + const { exchange } = this.applicationState.getState(); + let stocksByExchange = + this.applicationState.getStocksByExchange(exchange); + const output = []; + for (let key in stocksByExchange) { + output.push(stocksByExchange[key]); + } + spin.success({ text: 'Done....' }); + displayStockDetails(output); + } catch (e) { + logError(`Unexpected error: ${e.message}`); + } + } + + private async handleDelete() { + try { + let spin = createSpinner('Processing...'); + spacer(); + const { ticker, exchange } = this.applicationState.getState(); + this.applicationState.deleteStockByExchange(exchange, ticker); + spin.success({ text: 'Done....' }); + spacer(); + } catch (e) { + logError(`Unexpected error: ${e.message}`); + } + } +} diff --git a/src/prompter/index.ts b/src/prompter/index.ts new file mode 100644 index 0000000..c08f9f3 --- /dev/null +++ b/src/prompter/index.ts @@ -0,0 +1,197 @@ +import prompts, { PromptObject } from 'prompts'; +import * as path from 'path'; +import { promises as fs } from 'fs'; +import { RCFileContent } from '../types'; +import ApplicationState from '../core/state'; +import chalk from 'chalk'; +import { logError, spacer } from '../utils'; +import { + THEME, + StockExchanges, + InteractivePrompts, + EXIT_CLI_MSG, + CLI_CONFIG_START_MSG, + CLI_CONFIG_FINISH_MSG, +} from '../constants'; +import { InteractivePromptsHandler } from './actions'; + +class Prompter { + private exchange: string; + private apiKey: string; + private viewStock: boolean; + private saveStock: boolean; + private listStock: boolean; + private deleteStock: boolean; + private configFile: string; + private ticker: string; + private isManualMode: Boolean = false; + private applicationState: ApplicationState; + + constructor(params) { + this.applicationState = ApplicationState.getInstance(); + const { + exchange, + apiKey, + view, + save, + list, + delete: deleteOption, + configFile, + ticker, + } = params; + + this.exchange = exchange; + this.apiKey = apiKey; + this.viewStock = view; + this.saveStock = save; + this.listStock = list; + this.deleteStock = deleteOption; + this.configFile = configFile; + this.ticker = ticker; + + if (this.ticker && ticker.includes(':')) { + const [exchangeValue, tickerValue] = ticker.split(':'); + this.exchange = exchangeValue; + this.ticker = tickerValue; + } + + this.promptForMandatory(); + } + + private mapArgsToActionPrompts() { + let actionToTake = ''; + switch (true) { + case this.viewStock && this.saveStock: + actionToTake = 'viewAndSave'; + break; + case this.viewStock: + actionToTake = 'view'; + break; + case this.saveStock: + actionToTake = 'save'; + break; + case this.deleteStock: + actionToTake = 'delete'; + break; + case this.listStock: + actionToTake = 'list'; + break; + default: + break; + } + return actionToTake; + } + + public async actionPrompts() { + let actions = new InteractivePromptsHandler(); + let actionToTake = this.mapArgsToActionPrompts(); + if (actionToTake !== '') { + this.isManualMode = true; + await actions.handleSelectedOption(actionToTake); + } else { + this.isManualMode = false; + const { selectedOption } = await prompts({ + type: 'select', + name: 'selectedOption', + message: 'Which action would you like to perform?', + choices: InteractivePrompts, + }); + if (!selectedOption) { + spacer(); + console.log(chalk.hex(THEME.ORANGE)(EXIT_CLI_MSG)); + spacer(); + return; + } + if (selectedOption === 'changeTicker') { + const { ticker } = await prompts({ + type: 'text', + name: 'ticker', + message: 'Please provide ticker:', + validate: (value) => + value.length < 3 ? 'Please enter a valid ticket' : true, + }); + this.ticker = ticker; + this.applicationState.setTicker(ticker); + } + await actions.handleSelectedOption(selectedOption); + await this.actionPrompts(); + } + } + + public async promptForMandatory() { + const promptsToRun: PromptObject[] = []; + if (this.configFile) { + let processConfigFile = await this.checkForConfigFile(); + if (!processConfigFile) return; + } + if (!this.exchange || !this.apiKey) { + console.log(chalk.bgHex(THEME.PURPLE)(CLI_CONFIG_START_MSG)); + spacer(); + } + if (!this.apiKey) { + promptsToRun.push({ + type: 'text', + name: 'apiKey', + message: 'Enter the API key:', + validate: (value) => + value.length < 3 ? 'Please enter valid api key' : true, + }); + } + if (!this.exchange) { + promptsToRun.push({ + type: 'select', + name: 'exchange', + message: 'Select a stock exchange:', + choices: StockExchanges, + }); + promptsToRun.push({ + type: (prev) => (prev === null ? 'text' : null), + name: 'exchange', + message: 'Please provide the exchange code.', + validate: (value) => + value < 3 ? `Please provide valid exchange code.` : true, + }); + } + if (!this.ticker) { + promptsToRun.push({ + type: 'text', + name: 'ticker', + message: 'Please provide ticker:', + validate: (value) => + value.length < 3 ? 'Please enter a valid ticket' : true, + }); + } + + const { exchange, apiKey, ticker } = await prompts(promptsToRun); + this.exchange = exchange || this.exchange; + this.apiKey = apiKey || this.apiKey; + this.ticker = ticker || this.ticker; + this.applicationState.setApiKey(this.apiKey); + this.applicationState.setExchange(this.exchange); + this.applicationState.setTicker(this.ticker); + spacer(); + if (this.isManualMode) { + console.log(chalk.bgHex(THEME.PURPLE)(CLI_CONFIG_FINISH_MSG)); + spacer(); + } + await this.actionPrompts(); + } + + private async checkForConfigFile() { + try { + const filePath = path.resolve(process.cwd(), this.configFile); + const data = await fs.readFile(filePath, 'utf8'); + const jsonData: RCFileContent = JSON.parse(data); + this.apiKey = jsonData.apiKey || null; + this.exchange = jsonData.exchange || null; + this.applicationState.setApiKey(this.apiKey); + this.applicationState.setExchange(this.exchange); + return true; + } catch (error) { + logError(`Invalid .ttrc File.`); + return false; + } + } +} + +export default Prompter; diff --git a/src/types/index.ts b/src/types/index.ts new file mode 100644 index 0000000..6fccf7f --- /dev/null +++ b/src/types/index.ts @@ -0,0 +1,26 @@ +export interface CommanderOptions { + configFile?: string; + exchange?: string; + apiKey?: string; + ticker?: string; + view?: boolean; + save?: boolean; + list?: boolean; + delete?: boolean; +} + +export interface AlphaVantageApiResponse { + symbol: string; + date: string; + open: number; + high: number; + low: number; + price: number; + change: number; + volume: number; +} + +export interface RCFileContent { + apiKey?: string; + exchange?: string; +} diff --git a/src/utils/index.ts b/src/utils/index.ts new file mode 100644 index 0000000..4331d43 --- /dev/null +++ b/src/utils/index.ts @@ -0,0 +1,37 @@ +import Table from 'cli-table3'; +import chalk from 'chalk'; +import { THEME } from '../constants'; + +export const spacer = () => console.log(''); + +export const logError = (msg) => + console.log(chalk.bgHex(THEME.RED).hex(THEME.WHITE)(msg)); + +export const displayStockDetails = (obj) => { + const table = new Table({ + head: [ + 'Ticker ✌️', + 'Date ⌚', + 'Open ☼', + 'High ▲', + 'Low ▼', + 'Price $', + 'Change ∓', + 'Volume 📦', + ], + style: { head: [], border: [] }, + }); + + const arrayOfValues = obj.map((obj) => { + const color = + obj.change < 0 + ? chalk.hex(THEME.RED_STOCK) + : chalk.hex(THEME.GREEN_STOCK); + return Object.values(obj).map((value) => color(value)); + }); + + table.push(...arrayOfValues); + spacer(); + console.log(table.toString()); + spacer(); +}; diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 0000000..4cf8990 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,22 @@ +{ + "compilerOptions": { + "module": "CommonJS", + "esModuleInterop": true, + "allowSyntheticDefaultImports": true, + "target": "ESNext", + "moduleResolution": "Node", + "sourceMap": true, + "outDir": "dist", + "baseUrl": ".", + "paths": { + "*": [ + "node_modules/*", + "src/types/*" + ] + } + }, + "include": [ + "src/**/*" + ], + "exclude": ["node_modules"] +} \ No newline at end of file