Add the first prototype

.circleci/config.yml

@@ -0,0 +1,27 @@
+version: 2.1
+orbs:
+  codecov: codecov/[email protected]
+jobs:
+  build:
+    docker:
+      - image: circleci/golang:1.14.3
+
+    working_directory: /go/src/github.com/dnozdrin/vowels-coder
+    steps:
+      - checkout
+      - run:
+          name: "Setup Environment Variables"
+          command: |
+            echo "export CODECOV_TOKEN=55930313-e085-47c4-b996-54e2210012c1" >> $BASH_ENV
+      - run:
+          name: "Create a temp directory for artifacts"
+          command: |
+            mkdir -p /tmp/artifacts
+      - run: go get -v -t -d ./...
+      - run: go test -v -coverprofile=coverage.txt -covermode=atomic ./...
+      - run: go build
+      - store_artifacts:
+          path: /tmp/artifacts
+
+      - codecov/upload:
+          file: coverage.txt

.gitignore

@@ -13,3 +13,6 @@
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
+
+.idea/
+/vowels-coder

README.md

@@ -1 +1,33 @@
-# vowel-coder
+<p align="center">
+  <img alt="vowels-coder logo" src="assets/logo.svg" height="150"/>
+  <h3 align="center">vowels-coder</h3>
+  <p align="center">Vowels encoder / decoder</p>
+</p>
+
+---
+
+`vowels-coder` encodes and decodes a given string in English by replacing vowels according to the next map:
+
+| Letter | Number |
+| --- | --- |
+| a | 1 |
+| e | 2 |
+| i | 3 |
+| o | 4 |
+| u | 5 |
+
+## Badges
+[![dnozdrin](https://circleci.com/gh/dnozdrin/vowels-coder.svg?style=shield)](https://circleci.com/gh/dnozdrin/vowels-coder)
+[![codecov](https://codecov.io/gh/dnozdrin/vowels-coder/branch/master/graph/badge.svg)](https://codecov.io/gh/dnozdrin/vowels-coder)
+[![dnozdrin](https://goreportcard.com/badge/github.com/dnozdrin/vowels-coder)](https://goreportcard.com/report/github.com/dnozdrin/vowels-coder)
+[![License](https://img.shields.io/github/license/dnozdrin/vowels-coder)](/LICENSE)
+[![Release](https://img.shields.io/github/release/dnozdrin/vowels-coder.svg)](https://github.com/dnozdrin/vowels-coder/releases/latest)
+
+## Installation
+- Clone the repository
+- In the main directory run `go run build` to build the project
+
+## Usage
+- Run `go run build` to build the project.
+- To encode a string, run `./vowels-coder`, enter the text that must be encoded.
+- To decode a string, run `./vowels-coder -d`, enter the text that must be decoded.

go.mod

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+module github.com/dnozdrin/vowels-coder
+
+go 1.14

main.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"strings"
+)
+
+var encoderMap = []string{
+	"a", "1",
+	"e", "2",
+	"i", "3",
+	"o", "4",
+	"u", "5",
+}
+
+var decoderMap = []string{
+	"1", "a",
+	"2", "e",
+	"3", "i",
+	"4", "o",
+	"5", "u",
+}
+
+func main() {
+	var result string
+
+	decode := flag.Bool("d", false, "Decode.")
+	flag.Parse()
+
+	fmt.Println("Please enter the text to process:")
+	s := bufio.NewScanner(os.Stdin)
+	s.Split(bufio.ScanLines)
+	if s.Scan() {
+		if *decode {
+			result = processText(decoderMap, s.Text())
+		} else {
+			result = processText(encoderMap, s.Text())
+		}
+
+		fmt.Println(result)
+	}
+	if err := s.Err(); err != nil {
+		log.Printf("reading input: %s", err)
+	}
+}
+
+func processText(mapping []string, text string) string {
+	r := strings.NewReplacer(mapping...)
+	lowerCase := strings.ToLower(text)
+	return r.Replace(lowerCase)
+}

main_test.go

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+package main
+
+import "testing"
+
+var encodeTests = []struct {
+	in, out string
+}{
+	{"aeiou", "12345"},
+	{"hello", "h2ll4"},
+	{"hi there", "h3 th2r2"},
+	{"Hello", "h2ll4"},
+	{"HI THERE", "h3 th2r2"},
+}
+
+func TestEncode(t *testing.T) {
+	testTextProcessing(t, encodeTests, encoderMap)
+}
+
+func testTextProcessing(t *testing.T, samples []struct{ in, out string }, mapping []string) {
+	for _, tt := range samples {
+		t.Run(tt.in, func(t *testing.T) {
+			s := processText(mapping, tt.in)
+			if s != tt.out {
+				t.Errorf("got %q, want %q", s, tt.out)
+			}
+		})
+	}
+}
+
+var decodeTests = []struct {
+	in, out string
+}{
+	{"12345", "aeiou"},
+	{"h2ll4", "hello"},
+	{"h3 th2r2", "hi there"},
+}
+
+func TestDecode(t *testing.T) {
+	testTextProcessing(t, decodeTests, decoderMap)
+}