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style index.html
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+310
-2
lines changed

10 files changed

+310
-2
lines changed

‎.idea/dataSources.xml

+15
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‎db.sqlite

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‎go.mod

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module github.com/nyae44/url-shortener-app
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go 1.23
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require github.com/mattn/go-sqlite3 v1.14.24

‎go.sum

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github.com/mattn/go-sqlite3 v1.14.24 h1:tpSp2G2KyMnnQu99ngJ47EIkWVmliIizyZBfPrBWDRM=
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github.com/mattn/go-sqlite3 v1.14.24/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=

‎internal/controllers/index.go

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package controllers
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import (
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"html/template"
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"net/http"
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)
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func ShowIndex(w http.ResponseWriter, r *http.Request) {
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temp, err := template.ParseFiles("internal/views/index.html")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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if err = temp.Execute(w, nil); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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}

‎internal/controllers/shorten.go

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package controllers
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import (
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"database/sql"
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"github.com/nyae44/url-shortener-app/internal/db"
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"github.com/nyae44/url-shortener-app/internal/url"
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"html/template"
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"net/http"
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"strings"
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)
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func Shorten(lite *sql.DB) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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if r.Method != http.MethodPost {
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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return
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}
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originalURL := r.FormValue("url")
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if originalURL == "" {
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http.Error(w, "url is no provided", http.StatusBadRequest)
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return
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}
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if !strings.HasPrefix(originalURL, "http://") && !strings.HasPrefix(originalURL, "https://") {
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originalURL = "https://" + originalURL
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}
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// shorten url
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shortURL := url.Shorten(originalURL)
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if err := db.StoreURL(lite, shortURL, originalURL); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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data := map[string]string{
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"ShortURL": shortURL,
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}
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t, err := template.ParseFiles("internal/views/shorten.html")
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if err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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return
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}
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if err := t.Execute(w, data); err != nil {
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http.Error(w, err.Error(), http.StatusInternalServerError)
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}
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}
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}
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func Proxy(lite *sql.DB) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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shortURL := r.URL.Path[1:]
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if shortURL == "" {
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http.Error(w, "URL not provided", http.StatusBadRequest)
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return
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}
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origUrl, err := db.GetOriginalURL(lite, shortURL)
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if err != nil {
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http.Error(w, err.Error(), http.StatusNotFound)
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return
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}
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http.Redirect(w, r, origUrl, http.StatusPermanentRedirect)
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}
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}

‎internal/db/db.go

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package db
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import "database/sql"
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// createTable ensures the URLs table exists
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func CreateTable(db *sql.DB) error {
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query := `
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CREATE TABLE IF NOT EXISTS urls (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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short_url TEXT NOT NULL,
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original_url TEXT NOT NULL
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);`
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_, err := db.Exec(query)
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return err
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}
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// storeURL inserts a new short URL and the original URL into the database
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func StoreURL(db *sql.DB, shortURL string, originalURL string) error {
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query := `INSERT INTO urls(short_url, original_url) VALUES(?, ?)`
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_, err := db.Exec(query, shortURL, originalURL)
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return err
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}
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// getOriginalURL fetches the original URL by the short URL
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func GetOriginalURL(db *sql.DB, shortURL string) (string, error) {
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var originalURL string
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query := `SELECT original_url FROM urls WHERE short_url = ?`
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err := db.QueryRow(query, shortURL).Scan(&originalURL)
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if err != nil {
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return "", err
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}
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return originalURL, nil
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}

‎internal/url/url.go

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package url
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import (
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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)
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func Shorten(originalURL string) string {
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h := sha256.New()
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h.Write([]byte(originalURL))
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fmt.Println(h.Sum(nil))
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hash := hex.EncodeToString(h.Sum(nil))
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shortURL := hash[:8]
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return shortURL
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}

‎internal/views/index.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>URL Shortener</title>
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<style>
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/* Reset some default styles */
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body, h1, form, input, button, div {
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margin: 0;
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padding: 0;
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box-sizing: border-box;
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}
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body {
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font-family: 'Arial', sans-serif;
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background-color: #f4f4f9;
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color: #333;
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display: flex;
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justify-content: center;
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align-items: center;
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min-height: 100vh;
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}
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h1 {
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text-align: center;
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color: #4CAF50;
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font-size: 2rem;
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margin-bottom: 20px;
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}
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form {
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background: #fff;
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padding: 20px;
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border-radius: 8px;
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box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
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display: flex;
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flex-direction: column;
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align-items: center;
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width: 100%;
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max-width: 400px;
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}
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input[type="text"] {
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padding: 12px 15px;
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width: 100%;
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border: 1px solid #ddd;
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border-radius: 6px;
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margin-bottom: 10px;
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font-size: 1rem;
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}
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button {
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padding: 12px 20px;
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background-color: #4CAF50;
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color: #fff;
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border: none;
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border-radius: 6px;
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cursor: pointer;
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font-size: 1rem;
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width: 100%;
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transition: background-color 0.3s ease;
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}
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button:hover {
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background-color: #45a049;
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}
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#result {
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margin-top: 20px;
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text-align: center;
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}
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#result a {
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color: #4CAF50;
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text-decoration: none;
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font-weight: bold;
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}
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#result a:hover {
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text-decoration: underline;
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}
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/* Responsive styling */
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@media (max-width: 480px) {
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h1 {
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font-size: 1.5rem;
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}
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input[type="text"], button {
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font-size: 0.9rem;
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}
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}
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</style>
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<script>
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document.addEventListener('DOMContentLoaded', function () {
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const form = document.getElementById('shortenForm');
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const resultDiv = document.getElementById('result');
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if (form) {
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form.addEventListener('submit', async function (event) {
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event.preventDefault();
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const url = document.getElementById('urlInput').value;
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const response = await fetch('/shorten', {
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method: 'POST',
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headers: {'Content-Type': 'application/x-www-form-urlencoded'},
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body: `url=${encodeURIComponent(url)}`
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});
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// Insert HTML response and execute script
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const htmlContent = await response.text();
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resultDiv.innerHTML = htmlContent;
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// Manually execute script
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const script = resultDiv.querySelector('script');
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if (script) {
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eval(script.innerText)
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}
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});
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}
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});
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</script>
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</head>
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<body>
5-
<h1>URL Shortener</h1>
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</body>
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<main>
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<h1>URL Shortener</h1>
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<form id="shortenForm" action="/shorten" method="POST">
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<input type="text" name="url" id="urlInput" placeholder="Enter URL to shorten" required>
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<button type="submit">Shorten</button>
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</form>
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<div id="result"></div>
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</main>
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</body>
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</html>

‎internal/views/shorten.html

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>URL Shortened</title>
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</head>
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<body>
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<h1>Shortened URL</h1>
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<p>Your shortened URL is: <a href="/{{.ShortURL}}" target="_blank">{{.ShortURL}}</a></p>
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<button id="copyButton" data-url="{{.ShortURL}}">Copy to clipboard</button>
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<script>
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const copyButton = document.getElementById('copyButton');
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const url = copyButton.getAttribute('data-url');
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// Log the URL to ensure data-url is populated
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console.log("Data URL to copy:", url);
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copyButton.addEventListener('click', function () {
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if (navigator.clipboard && navigator.clipboard.writeText) {
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navigator.clipboard.writeText("http://localhost:8080" + url).then(() => {
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alert('URL copied to clipboard!');
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}).catch(err => {
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console.error('Failed to copy:', err);
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});
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} else {
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alert('Clipboard API not supported in this browser.');
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}
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});
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</script>
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</body>
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</html>

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