commit 7b5dfd867d0ee83eecd71b53b390c15578cffcee
Author: dm1sh <me@dmitriy.icu>
Date:   Thu Jul 7 23:59:43 2022 +0300

    Added basic implementation

diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..ce5dd4d
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,11 @@
+module dm1sh/gordle
+
+go 1.18
+
+require github.com/fatih/color v1.13.0
+
+require (
+	github.com/mattn/go-colorable v0.1.9 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
+	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..6ab7ee4
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,11 @@
+github.com/fatih/color v1.13.0 h1:8LOYc1KYPPmyKMuN8QV2DNRWNbLo6LZ0iLs8+mlH53w=
+github.com/fatih/color v1.13.0/go.mod h1:kLAiJbzzSOZDVNGyDpeOxJ47H46qBXwg5ILebYFFOfk=
+github.com/mattn/go-colorable v0.1.9 h1:sqDoxXbdeALODt0DAeJCVp38ps9ZogZEAXjus69YV3U=
+github.com/mattn/go-colorable v0.1.9/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
+github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
+github.com/mattn/go-isatty v0.0.14 h1:yVuAays6BHfxijgZPzw+3Zlu5yQgKGP2/hcQbHb7S9Y=
+github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=
+golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c h1:F1jZWGFhYfh0Ci55sIpILtKKK8p3i2/krTr0H1rg74I=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
diff --git a/gordle.go b/gordle.go
new file mode 100644
index 0000000..8f6f691
--- /dev/null
+++ b/gordle.go
@@ -0,0 +1,150 @@
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"log"
+	"math/rand"
+	"os"
+	"strings"
+	"time"
+
+	"github.com/fatih/color"
+)
+
+type CharacterStatus byte
+
+const (
+	RIGHT CharacterStatus = iota
+	CONTAINS
+	WRONG
+)
+
+func main() {
+	rightOutput := color.New(color.BgGreen, color.FgBlack)
+	containsOutput := color.New(color.BgYellow, color.FgBlack)
+	wrongOutput := color.New(color.BgWhite, color.FgBlack)
+
+	var nFlag = flag.Int("n", 5, "Word size")
+	flag.Parse()
+	nChar := *nFlag
+
+	fmt.Println("Welcome to Gordle - go implementation of Wordle game")
+
+	file, err := os.Open(fmt.Sprintf("./dictionary/%d.txt", nChar+1))
+
+	if err != nil {
+		log.Fatal("There is no dictionary with such amount of letters")
+	}
+
+	defer file.Close()
+
+	scanner := bufio.NewScanner(file)
+
+	words := []string{}
+
+	for scanner.Scan() {
+		words = append(words, scanner.Text())
+	}
+
+	fmt.Printf("You are going to guess a %d letter word in %d tries from %d dictionary\n", nChar, nChar+1, len(words))
+
+	rand.Seed(time.Now().Unix())
+
+	ind := rand.Intn(len(words))
+
+	chosen := words[ind]
+
+	inpScanner := bufio.NewScanner(os.Stdin)
+
+	var nTries = 1
+
+	for nTries <= nChar+1 {
+		inpScanner.Scan()
+		input := inpScanner.Text()
+
+		moveConsoleCursorUp()
+
+		if len(input) != nChar {
+			fmt.Printf("Wrong number of letters in your input. Remember, you need to input %d character words.\n", nChar)
+			continue
+		}
+
+		if input == chosen {
+			color.Green(input)
+			fmt.Printf("Congratulations, you have found the right word on %d try!\n", nTries)
+			os.Exit(0)
+		}
+
+		if !BinSearch(words, input) {
+			fmt.Printf("The word you entered: %s is not contained in the dictionary\n", input)
+			continue
+		}
+
+		nTries++
+
+		comparitionResult := CompareStrings(input, chosen)
+
+		for pos, chr := range input {
+			switch comparitionResult[pos] {
+			case RIGHT:
+				rightOutput.Print(string(chr))
+			case CONTAINS:
+				containsOutput.Print(string(chr))
+			case WRONG:
+				wrongOutput.Print(string(chr))
+			}
+		}
+
+		fmt.Print("\n")
+	}
+
+	fmt.Println("Unfortunately, you lost. Puzzled word was", chosen)
+}
+
+func moveConsoleCursorUp() {
+	fmt.Print("\033[1A")
+}
+
+func CompareStrings(input, chosen string) []CharacterStatus {
+	inputReader := strings.NewReader(input)
+	chosenReader := strings.NewReader(chosen)
+
+	result := make([]CharacterStatus, len(input))
+
+	for i := 0; ; i++ {
+		inputRune, _, err1 := inputReader.ReadRune()
+		chosenRune, _, err2 := chosenReader.ReadRune()
+
+		if err1 != nil || err2 != nil {
+			return result
+		}
+
+		if inputRune == chosenRune {
+			result[i] = RIGHT
+		} else if strings.ContainsRune(chosen, inputRune) {
+			result[i] = CONTAINS
+		} else {
+			result[i] = WRONG
+		}
+	}
+}
+
+func BinSearch(arr []string, el string) bool {
+	begin, end := 0, len(arr)-1
+
+	for begin <= end {
+		middle := begin + (end-begin)/2
+
+		if el > arr[middle] {
+			begin = middle + 1
+		} else if el < arr[middle] {
+			end = middle - 1
+		} else {
+			return true
+		}
+	}
+
+	return false
+}