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make a chat that should work on the cruise ship

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This commit is contained in:
Mason Payne
2025-05-09 22:16:10 -06:00
commit 79977c47ba
13 changed files with 430 additions and 0 deletions
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8
.idea/.gitignore generated vendored Normal file
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# Default ignored files
/shelf/
/workspace.xml
# Editor-based HTTP Client requests
/httpRequests/
# Datasource local storage ignored files
/dataSources/
/dataSources.local.xml

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.idea/cruise-chat.iml generated Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<module type="WEB_MODULE" version="4">
<component name="Go" enabled="true" />
<component name="NewModuleRootManager">
<content url="file://$MODULE_DIR$" />
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
</component>
</module>

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="DataSourceManagerImpl" format="xml" multifile-model="true">
<data-source source="LOCAL" name="chat" uuid="adc429a9-da7c-48b7-890a-fa27af299065">
<driver-ref>sqlite.xerial</driver-ref>
<synchronize>true</synchronize>
<jdbc-driver>org.sqlite.JDBC</jdbc-driver>
<jdbc-url>jdbc:sqlite:C:\Users\gomas\src\cruise-chat\chat.db</jdbc-url>
<jdbc-additional-properties>
<property name="com.intellij.clouds.kubernetes.db.enabled" value="false" />
</jdbc-additional-properties>
<working-dir>$ProjectFileDir$</working-dir>
<libraries>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/license.txt</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/slf4j/slf4j-api/1.7.36/slf4j-api-1.7.36.jar</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/slf4j/slf4j-api/1.7.36/slf4j-api-1.7.36.jar.sha1</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/slf4j/slf4j-api/1.7.36/slf4j-api-1.7.36.pom</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/slf4j/slf4j-api/1.7.36/slf4j-api-1.7.36.pom.sha1</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/slf4j/slf4j-api/1.7.36/_remote.repositories</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/slf4j/slf4j-parent/1.7.36/slf4j-parent-1.7.36.pom</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/slf4j/slf4j-parent/1.7.36/slf4j-parent-1.7.36.pom.sha1</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/slf4j/slf4j-parent/1.7.36/_remote.repositories</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/xerial/sqlite-jdbc/3.45.1.0/sqlite-jdbc-3.45.1.0.jar</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/xerial/sqlite-jdbc/3.45.1.0/sqlite-jdbc-3.45.1.0.jar.sha1</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/xerial/sqlite-jdbc/3.45.1.0/sqlite-jdbc-3.45.1.0.pom</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/xerial/sqlite-jdbc/3.45.1.0/sqlite-jdbc-3.45.1.0.pom.sha1</url>
</library>
<library>
<url>file://$APPLICATION_CONFIG_DIR$/jdbc-drivers/Xerial SQLiteJDBC/3.45.1/org/xerial/sqlite-jdbc/3.45.1.0/_remote.repositories</url>
</library>
</libraries>
</data-source>
</component>
</project>

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="ProjectModuleManager">
<modules>
<module fileurl="file://$PROJECT_DIR$/.idea/cruise-chat.iml" filepath="$PROJECT_DIR$/.idea/cruise-chat.iml" />
</modules>
</component>
</project>

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<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="$PROJECT_DIR$" vcs="Git" />
</component>
</project>

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chat.db Normal file
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go.mod Normal file
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module cruise-chat
go 1.23.0
toolchain go1.23.6
require (
github.com/gorilla/mux v1.8.1
github.com/gorilla/sessions v1.4.0
github.com/mattn/go-sqlite3 v1.14.28
golang.org/x/crypto v0.38.0
)
require github.com/gorilla/securecookie v1.1.2 // indirect

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go.sum Normal file
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github.com/google/gofuzz v1.2.0 h1:xRy4A+RhZaiKjJ1bPfwQ8sedCA+YS2YcCHW6ec7JMi0=
github.com/google/gofuzz v1.2.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
github.com/gorilla/mux v1.8.1 h1:TuBL49tXwgrFYWhqrNgrUNEY92u81SPhu7sTdzQEiWY=
github.com/gorilla/mux v1.8.1/go.mod h1:AKf9I4AEqPTmMytcMc0KkNouC66V3BtZ4qD5fmWSiMQ=
github.com/gorilla/securecookie v1.1.2 h1:YCIWL56dvtr73r6715mJs5ZvhtnY73hBvEF8kXD8ePA=
github.com/gorilla/securecookie v1.1.2/go.mod h1:NfCASbcHqRSY+3a8tlWJwsQap2VX5pwzwo4h3eOamfo=
github.com/gorilla/sessions v1.4.0 h1:kpIYOp/oi6MG/p5PgxApU8srsSw9tuFbt46Lt7auzqQ=
github.com/gorilla/sessions v1.4.0/go.mod h1:FLWm50oby91+hl7p/wRxDth9bWSuk0qVL2emc7lT5ik=
github.com/mattn/go-sqlite3 v1.14.28 h1:ThEiQrnbtumT+QMknw63Befp/ce/nUPgBPMlRFEum7A=
github.com/mattn/go-sqlite3 v1.14.28/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y=
golang.org/x/crypto v0.38.0 h1:jt+WWG8IZlBnVbomuhg2Mdq0+BBQaHbtqHEFEigjUV8=
golang.org/x/crypto v0.38.0/go.mod h1:MvrbAqul58NNYPKnOra203SB9vpuZW0e+RRZV+Ggqjw=

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main.go Normal file
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package main
import (
"database/sql"
"encoding/json"
"html/template"
"log"
"net/http"
"time"
"github.com/gorilla/mux"
"github.com/gorilla/sessions"
_ "github.com/mattn/go-sqlite3"
"golang.org/x/crypto/bcrypt"
)
var (
db *sql.DB
store = sessions.NewCookieStore([]byte("super-secret-key"))
templates *template.Template
)
type User struct {
ID int
Username string
Password string
}
type Message struct {
ID int `json:"id"`
SenderID int `json:"sender_id"`
Username string `json:"username"`
Content string `json:"content"`
Timestamp time.Time `json:"timestamp"`
}
func init() {
var err error
templates, err = template.ParseFiles("templates/login.html", "templates/chat.html")
if err != nil {
log.Fatal(err)
}
}
func main() {
var err error
db, err = sql.Open("sqlite3", "./chat.db")
if err != nil {
log.Fatal(err)
}
defer db.Close()
createTables()
prepopulateUsers()
// Configure session store for non-HTTPS compatibility
store.Options = &sessions.Options{
Path: "/",
HttpOnly: true,
SameSite: http.SameSiteLaxMode, // Lax mode for Safari compatibility on HTTP
}
r := mux.NewRouter()
r.HandleFunc("/", rootHandler) // Redirect root to login
r.HandleFunc("/login", loginPage).Methods("GET")
r.HandleFunc("/login", loginHandler).Methods("POST")
r.HandleFunc("/logout", logoutHandler).Methods("GET")
r.HandleFunc("/chat", chatPage).Methods("GET")
r.HandleFunc("/send", sendMessage).Methods("POST")
r.HandleFunc("/messages", getMessages).Methods("GET")
r.PathPrefix("/static/").Handler(http.StripPrefix("/static/", http.FileServer(http.Dir("./static"))))
http.Handle("/", r)
log.Println("Server starting on :8080")
log.Fatal(http.ListenAndServe(":8080", nil))
}
func rootHandler(w http.ResponseWriter, r *http.Request) {
http.Redirect(w, r, "/login", http.StatusSeeOther)
}
func createTables() {
_, err := db.Exec(`
CREATE TABLE IF NOT EXISTS users (
id INTEGER PRIMARY KEY AUTOINCREMENT,
username TEXT UNIQUE,
password TEXT
);
CREATE TABLE IF NOT EXISTS messages (
id INTEGER PRIMARY KEY AUTOINCREMENT,
sender_id INTEGER,
content TEXT,
timestamp DATETIME,
FOREIGN KEY(sender_id) REFERENCES users(id)
);
`)
if err != nil {
log.Fatal(err)
}
}
func prepopulateUsers() {
users := []User{
//{Username: "user1", Password: "pass1"},
//{Username: "user2", Password: "pass2"},
}
for _, u := range users {
hashedPass, _ := bcrypt.GenerateFromPassword([]byte(u.Password), bcrypt.DefaultCost)
_, err := db.Exec("INSERT OR IGNORE INTO users (username, password) VALUES (?, ?)", u.Username, hashedPass)
if err != nil {
log.Fatal(err)
}
}
}
func loginPage(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
if session.Values["username"] != nil {
http.Redirect(w, r, "/chat", http.StatusSeeOther)
return
}
errorMsg := r.URL.Query().Get("error")
data := struct {
Error string
}{
Error: errorMsg,
}
templates.ExecuteTemplate(w, "login.html", data)
}
func loginHandler(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
username := r.FormValue("username")
password := r.FormValue("password")
var storedHash string
err := db.QueryRow("SELECT password FROM users WHERE username = ?", username).Scan(&storedHash)
if err != nil || bcrypt.CompareHashAndPassword([]byte(storedHash), []byte(password)) != nil {
http.Redirect(w, r, "/login?error=invalid", http.StatusSeeOther)
return
}
session, _ := store.Get(r, "session")
session.Values["username"] = username
session.Save(r, w)
http.Redirect(w, r, "/chat", http.StatusSeeOther)
}
func chatPage(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
if session.Values["username"] == nil {
http.Redirect(w, r, "/login", http.StatusSeeOther)
return
}
templates.ExecuteTemplate(w, "chat.html", session.Values["username"])
}
func sendMessage(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
if session.Values["username"] == nil {
http.Error(w, "Unauthorized", http.StatusUnauthorized)
return
}
r.ParseForm()
content := r.FormValue("content")
username := session.Values["username"].(string)
var senderID int
db.QueryRow("SELECT id FROM users WHERE username = ?", username).Scan(&senderID)
_, err := db.Exec("INSERT INTO messages (sender_id, content, timestamp) VALUES (?, ?, ?)",
senderID, content, time.Now().UTC())
if err != nil {
http.Error(w, "Failed to send message", http.StatusInternalServerError)
return
}
w.WriteHeader(http.StatusOK)
}
func getMessages(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
if session.Values["username"] == nil {
http.Error(w, "Unauthorized", http.StatusUnauthorized)
return
}
rows, err := db.Query(`
SELECT m.id, m.sender_id, u.username, m.content, m.timestamp
FROM messages m
JOIN users u ON m.sender_id = u.id
ORDER BY m.timestamp ASC
`)
if err != nil {
http.Error(w, "Failed to fetch messages", http.StatusInternalServerError)
return
}
defer rows.Close()
var messages []Message
for rows.Next() {
var m Message
rows.Scan(&m.ID, &m.SenderID, &m.Username, &m.Content, &m.Timestamp)
messages = append(messages, m)
}
w.Header().Set("Content-Type", "application/json")
json.NewEncoder(w).Encode(messages)
}
func logoutHandler(w http.ResponseWriter, r *http.Request) {
session, _ := store.Get(r, "session")
session.Options.MaxAge = -1
session.Save(r, w)
http.Redirect(w, r, "/login", http.StatusSeeOther)
}

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templates/chat.html Normal file
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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Cruise Chat</title>
<link href="/static/css/bootstrap.min.css" rel="stylesheet">
<style>
#chat-box { height: 70vh; overflow-y: auto; border: 1px solid #ccc; padding: 10px; }
.message { margin-bottom: 10px; }
</style>
</head>
<body>
<div class="container mt-3">
<h2 class="text-center">Cruise Chat</h2>
<!-- <p class="text-muted">Logged in as: {{.}}</p>-->
<div class="d-flex justify-content-between align-items-center">
<p class="text-muted mb-0">Logged in as: {{.}}</p>
<a href="/logout" class="btn btn-secondary btn-sm">Logout</a>
</div>
<div id="chat-box" class="mb-3"></div>
<div class="input-group">
<input type="text" id="message-input" class="form-control" placeholder="Type a message...">
<button id="send-btn" class="btn btn-primary">Send</button>
</div>
</div>
<script src="/static/js/jquery.min.js"></script>
<script>
function fetchMessages() {
$.getJSON("/messages", function(data) {
$("#chat-box").empty();
data.forEach(msg => {
let time = new Date(msg.timestamp).toLocaleTimeString();
$("#chat-box").append(
`<div class="message"><strong>${msg.username}</strong> (${time}): ${msg.content}</div>`
);
});
$("#chat-box").scrollTop($("#chat-box")[0].scrollHeight);
});
}
$(document).ready(function() {
fetchMessages();
setInterval(fetchMessages, 2000);
$("#send-btn").click(function() {
let content = $("#message-input").val();
if (content) {
$.post("/send", { content: content }, function() {
$("#message-input").val("");
fetchMessages();
});
}
});
$("#message-input").keypress(function(e) {
if (e.which == 13) {
$("#send-btn").click();
}
});
});
</script>
</body>
</html>

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<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Login</title>
<link href="/static/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container mt-5">
<h2 class="text-center">Cruise Chat Login</h2>
<form method="POST" class="col-md-6 mx-auto">
<div class="mb-3">
<label for="username" class="form-label">Username</label>
<input type="text" class="form-control" id="username" name="username" required>
</div>
<div class="mb-3">
<label for="password" class="form-label">Password</label>
<input type="password" class="form-control" id="password" name="password" required>
</div>
<button type="submit" class="btn btn-primary w-100">Login</button>
{{if .Error}}<p class="text-danger mt-2">Invalid credentials</p>{{end}}
</form>
</div>
</body>
</html>