add a way for mods to create a password reset link for users

app/routes/users.py

@@ -4,7 +4,7 @@ from flask import (
 from functools import wraps
 from ..db import db
 from ..lib.babycode import babycode_to_html
-from ..models import Users, Sessions, Subscriptions, Avatars
+from ..models import Users, Sessions, Subscriptions, Avatars, PasswordResetLinks
 from ..constants import InfoboxKind, PermissionLevel
 from ..auth import digest, verify
 from wand.image import Image
@@ -516,3 +516,60 @@ def inbox(username):
             })
 
     return render_template("users/inbox.html", new_posts = new_posts, total_unreads_count = total_unreads_count, all_subscriptions = all_subscriptions)
+
+
+@bp.get('/reset-link/<key>')
+def reset_link_login(key):
+    reset_link = PasswordResetLinks.find({
+        'key': key
+    })
+    if not reset_link:
+        return redirect(url_for('topics.all_topics'))
+
+    if int(time.time()) > int(reset_link.expires_at):
+        reset_link.delete()
+        return redirect(url_for('topics.all_topics'))
+
+    target_user = Users.find({
+        'id': reset_link.user_id
+    })
+
+    return render_template('users/reset_link_login.html', username = target_user.username)
+
+
+@bp.post('/reset-link/<key>')
+def reset_link_login_form(key):
+    reset_link = PasswordResetLinks.find({
+        'key': key
+    })
+    if not reset_link:
+        return redirect('topics.all_topics')
+
+    if int(time.time()) > int(reset_link.expires_at):
+        reset_link.delete()
+        return redirect('topics.all_topics')
+
+    password = request.form.get('password')
+    password2 = request.form.get('password2')
+
+    if not validate_password(password):
+        flash("Invalid password.", InfoboxKind.ERROR)
+        return redirect(url_for('.reset_link_login', key=key))
+
+    if password != password2:
+        flash("Passwords do not match.", InfoboxKind.ERROR)
+        return redirect(url_for('.reset_link_login', key=key))
+
+    target_user = Users.find({
+        'id': reset_link.user_id
+    })
+    reset_link.delete()
+
+    hashed = digest(password)
+    target_user.update({'password_hash': hashed})
+    session_obj = create_session(target_user.id)
+
+    session['pyrom_session_key'] = session_obj.key
+    flash("Logged in!", InfoboxKind.INFO)
+
+    return redirect(url_for('.page', username=target_user.username))