database/db_commands.py

@@ -1,5 +1,48 @@
 from datetime import datetime
-from database.db_connection import get_db
+from database.db_connection import get_db, get_accounts_db
+import hashlib
+import os
+
+
+def _hash_password(password: str, salt: str = None):
+    if salt is None:
+        salt = os.urandom(16).hex()
+    pw_hash = hashlib.sha256((salt + password).encode()).hexdigest()
+    return f"{salt}${pw_hash}"
+
+
+def _verify_password(stored: str, password: str) -> bool:
+    salt, _ = stored.split("$", 1)
+    return stored == _hash_password(password, salt)
+
+
+def register_user(username, email, password, account_type="private_user"):
+    with get_accounts_db() as conn:
+        existing = conn.execute(
+            "SELECT user_id FROM users WHERE username = ? OR email = ?",
+            (username, email)
+        ).fetchone()
+        if existing:
+            raise ValueError("A user with that username or email already exists.")
+        password_hash = _hash_password(password)
+        conn.execute("""
+            INSERT INTO users (username, email, password_hash, account_type, created_at)
+            VALUES (?, ?, ?, ?, ?)
+        """, (username, email, password_hash, account_type, datetime.now()))
+
+
+def login_user(username, password):
+    with get_accounts_db() as conn:
+        row = conn.execute(
+            "SELECT * FROM users WHERE username = ?",
+            (username,)
+        ).fetchone()
+        if not row:
+            raise ValueError("Invalid username or password.")
+        user = dict(row)
+        if not _verify_password(user["password_hash"], password):
+            raise ValueError("Invalid username or password.")
+        return {k: user[k] for k in ("user_id", "username", "email", "account_type")}
 
 
 def add_species(english, latin, body, category, extinction_risk, image_id):

database/db_connection.py

@@ -2,11 +2,33 @@ import sqlite3
 from contextlib import contextmanager
 
 DATABASE_PATH = "database/database.db"
+ACCOUNTS_DATABASE_PATH = "database/accounts.db"
 
 @contextmanager
 def get_db():
     conn = sqlite3.connect(DATABASE_PATH)
     conn.row_factory = sqlite3.Row
+    try:
+        yield conn
+        conn.commit()
+    finally:
+        conn.close()
+
+@contextmanager
+def get_accounts_db():
+    conn = sqlite3.connect(ACCOUNTS_DATABASE_PATH)
+    conn.row_factory = sqlite3.Row
+    conn.execute("""
+        CREATE TABLE IF NOT EXISTS users (
+            user_id INTEGER PRIMARY KEY AUTOINCREMENT,
+            username TEXT UNIQUE NOT NULL,
+            email TEXT UNIQUE NOT NULL,
+            password_hash TEXT NOT NULL,
+            account_type TEXT NOT NULL DEFAULT 'private_user',
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+    """)
+    conn.commit()
     try:
         yield conn
         conn.commit()

database/db_init.py

@@ -1,4 +1,4 @@
-from database.db_connection import get_db
+from database.db_connection import get_db, get_accounts_db
 from datetime import datetime
 
 SEED_SPECIES = [
@@ -136,5 +136,21 @@ def seed_species():
     print("Seeding complete.")
 
 
+def init_accounts_database():
+    with get_accounts_db() as conn:
+        conn.execute("""
+        CREATE TABLE IF NOT EXISTS users (
+            user_id INTEGER PRIMARY KEY AUTOINCREMENT,
+            username TEXT UNIQUE NOT NULL,
+            email TEXT UNIQUE NOT NULL,
+            password_hash TEXT NOT NULL,
+            account_type TEXT NOT NULL DEFAULT 'private_user',
+            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+        )
+        """)
+    print("Accounts database initialised.")
+
+
 if __name__ == "__main__":
-    init_database()
+    init_database()
+    init_accounts_database()

routes/accounts/accounts.py

@@ -1,11 +1,61 @@
-from flask import render_template, Blueprint, request, redirect, url_for
+from flask import render_template, Blueprint, request, redirect, url_for, session
+from database.db_commands import register_user, login_user
 
 page = Blueprint("login", __name__, url_prefix="")
 
-@page.route("/login")
-def login():
-    return render_template("accounts/login.jinja")
 
-@page.route("/register")
+@page.route("/login", methods=["GET", "POST"])
+def login():
+    if "user_id" in session:
+        return redirect(url_for("login.dashboard"))
+    error = None
+    if request.method == "POST":
+        username = request.form.get("username", "").strip()
+        password = request.form.get("password", "")
+        try:
+            user = login_user(username, password)
+            session.clear()
+            session["user_id"] = user["user_id"]
+            session["username"] = user["username"]
+            session["account_type"] = user["account_type"]
+            return redirect(url_for("login.dashboard"))
+        except ValueError as e:
+            error = str(e)
+    return render_template("accounts/login.jinja", error=error)
+
+
+@page.route("/register", methods=["GET", "POST"])
 def register():
-    return render_template("accounts/user_registration.jinja")
+    if "user_id" in session:
+        return redirect(url_for("login.dashboard"))
+    error = None
+    if request.method == "POST":
+        username = request.form.get("username", "").strip()
+        email = request.form.get("email", "").strip()
+        account_type = request.form.get("account_type", "private_user")
+        password = request.form.get("password", "")
+        password_confirm = request.form.get("password_confirm", "")
+        if password != password_confirm:
+            error = "Passwords do not match."
+        elif len(password) < 8:
+            error = "Password must be at least 8 characters."
+        else:
+            try:
+                register_user(username, email, password, account_type)
+                return redirect(url_for("login.login"))
+            except ValueError as e:
+                error = str(e)
+    return render_template("accounts/user_registration.jinja", error=error)
+
+
+@page.route("/logout")
+def logout():
+    session.clear()
+    return redirect(url_for("login.login"))
+
+
+@page.route("/dashboard")
+def dashboard():
+    if "user_id" not in session:
+        return redirect(url_for("login.login"))
+    return render_template("accounts/dashboard.jinja")

templates/accounts/dashboard.jinja

@@ -0,0 +1,68 @@
+{% extends "base.jinja" %}
+{% block title %}Dashboard{% endblock %}
+{% block head %}{% endblock %}
+{% block content %}
+{% from 'button.jinja' import button %}
+
+<section id="hero" style="padding: 40px 20px; text-align: center;">
+    <h1>Welcome back, {{ session.username }}.</h1>
+    <p style="max-width: 700px; margin: 0.5rem auto;">Your conservation dashboard.</p>
+</section>
+
+<section style="padding: 0 20px 40px 20px; max-width: 900px; margin: 0 auto;">
+
+    {#Enrolled Programmes (everyone sees this)#}
+    <div class="container-full" style="margin-bottom: 20px;">
+        <h2>Your Programmes</h2>
+        {% if enrolled_programmes %}
+            <div class="species-grid">
+                {% for prog in enrolled_programmes %}
+                <div class="container-lite">
+                    <h3>{{ prog.name }}</h3>
+                    <p>{{ prog.description }}</p>
+                    {{ button(url='/programmes/' ~ prog.id, button_text='View', extra_classes='homepage-btn') }}
+                </div>
+                {% endfor %}
+            </div>
+        {% else %}
+            <p style="color: var(--text); opacity: 0.6;">You are not enrolled in any programmes yet.</p>
+            {{ button(url='/programmes', button_text='Browse Programmes', extra_classes='homepage-btn') }}
+        {% endif %}
+    </div>
+
+    {#Student#}
+    {% if session.account_type == "student" %}
+    <div class="container-full" style="margin-bottom: 20px;">
+        <h2>Classes</h2>
+        <p>View the classes you have joined.</p>
+        {{ button(url='/classes', button_text='View Classes', extra_classes='homepage-btn') }}
+    </div>
+    {% endif %}
+
+    {#Teacher#}
+    {% if session.account_type == "teacher" %}
+    <div class="container-full" style="margin-bottom: 20px;">
+        <h2>Classes</h2>
+        <p>View your classes or set up a new one for your students.</p>
+        <div class="homepage-buttons" style="justify-content: flex-start; margin-top: 1rem;">
+            {{ button(url='/classes', button_text='View Classes', extra_classes='homepage-btn') }}
+        </div>
+    </div>
+    {% endif %}
+
+    {#Community Leader#}
+    {% if session.account_type == "community_leader" %}
+    <div class="container-full" style="margin-bottom: 20px;">
+        <h2>Programmes</h2>
+        <p>Create a new conservation programme for others to join.</p>
+        {{ button(url='/programmes/create', button_text='Create a Programme', extra_classes='homepage-btn') }}
+    </div>
+    {% endif %}
+
+</section>
+
+<section style="padding: 20px; text-align: center;">
+    {{ button(url='/logout', button_text='Log Out', extra_classes='homepage-btn') }}
+</section>
+
+{% endblock %}

templates/accounts/login.jinja

@@ -6,7 +6,10 @@
 {% block content %}
 {% from 'button.jinja' import button %}
 <section id="hero" class="form">
-    <form action="" class="container" method="POST">
+    <form action="{{ url_for('login.login') }}" class="container" method="POST">
+        {% if error %}
+        <p class="form-error">{{ error }}</p>
+        {% endif %}
         <div class="form-group">
             <label for="username">Username:</label>
             <input type="text" id="username" name="username" required>

templates/accounts/user_registration.jinja

@@ -6,7 +6,10 @@
 {% block content %}
 {% from 'button.jinja' import button %}
 <section id="hero" class="form">
-    <form action="" class="container" method="POST">
+    <form action="{{ url_for('login.register') }}" class="container" method="POST">
+        {% if error %}
+        <p class="form-error">{{ error }}</p>
+        {% endif %}
         <div class="form-group">
             <label for="username">Username:</label>
             <input type="text" id="username" name="username" required>
@@ -15,6 +18,14 @@
             <label for="email">Email:</label>
             <input type="text" id="email" name="email" required>
         </div>
+        <div class="form-group">
+            <label for="account_type">Account type:</label>
+            <select id="account_type" name="account_type" required>
+            <option value="private_user">Private User</option>
+            <option value="teacher">Teacher</option>
+            <option value="student">Student</option>
+            <option value="community_leader">Community Leader</option>
+        </select> </div>
         <div class="form-group">
             <label for="password">Password:</label>
             <input type="password" id="password" name="password">
@@ -24,7 +35,7 @@
             <input type="password" id="password_confirm" name="password_confirm">
         </div>
         <button type="submit" class="submit-button">
-            Login
+            Register
         </button>
     </form>
 </section>

templates/home/home.jinja

@@ -40,9 +40,9 @@
         your group can get involved through educational programs, fundraising, and awareness campaigns.
     </p>
     <div class="homepage-buttons">
-        {{ button(url='/register-school', button_text='Register Your School', extra_classes='homepage-btn') }}
+        {{ button(url='/register', button_text='Register Your School/Community', extra_classes='homepage-btn') }}
         <!-- need to assign bg colour -->
-        {{ button(url='/register-community', button_text='Join as a Community', extra_classes='homepage-btn') }}
+        {{ button(url='/register', button_text='Register as a teacher', extra_classes='homepage-btn') }}
     </div>
 </section>
 {% endblock %}

templates/navbar.jinja

@@ -15,7 +15,9 @@
                 <a href="/species/portal">Add Species</a>
                 <a href="/species">View Species</a>
                 <a href="/species_search">Search Species</a>
-                <a href="/login">Login page</a>
+                <a href="/login">Login</a>
+                <a href="/register">Register new user</a>
+                <a href="/dashboard">Dashboard</a>
             </div>
         </div>
         {# todo #}