added authentication among other things. considered working at this point.

models/user.go

@@ -0,0 +1,37 @@
+package models
+
+import (
+	"database/sql"
+	"log"
+)
+
+type User struct {
+	Id           int
+	Username     string
+	PasswordHash string
+}
+
+var db *sql.DB
+
+func SetDB(database *sql.DB) {
+	db = database
+}
+
+func CreateUser(username, passwordHash string) error {
+	_, err := db.Exec("INSERT INTO users (username, password_hash) VALUES (?, ?)", username, passwordHash)
+	return err
+}
+
+func GetUserByUsername(username string) *User {
+	row := db.QueryRow("SELECT id, username, password_hash FROM users WHERE username = ?", username)
+
+	var user User
+	err := row.Scan(&user.Id, &user.Username, &user.PasswordHash)
+	if err != nil {
+		if err != sql.ErrNoRows {
+			log.Println("DB error:", err)
+		}
+		return nil
+	}
+	return &user
+}