Added user email modification to admin page

Pressing the user settings button brings up a list of all jellyfin
users, and allows you to add or change their stored email addresses.
Additionally, changed emails.json to use user ID instead of username.
The program automatically converts the file to the new format at start.

jellyfin_accounts/web_api.py

@@ -66,6 +66,36 @@ while attempts != 3:
                    '. Retrying...'))
         time.sleep(5)
 
+
+def switchToIds():
+    try:
+        with open(config['files']['emails'], 'r') as f:
+            emails = json.load(f)
+    except (FileNotFoundError, json.decoder.JSONDecodeError):
+        emails = {}
+    users = jf.getUsers(public=False)
+    new_emails = {}
+    match = False
+    for key in emails:
+        for user in users:
+            if user['Name'] == key:
+                match = True
+                new_emails[user['Id']] = emails[key]
+            elif user['Id'] == key:
+                new_emails[user['Id']] = emails[key]
+    if match:
+        from pathlib import Path
+        email_file = Path(config['files']['emails']).name
+        log.info((f'{email_file} modified to use userID instead of ' +
+                  'usernames. These will be used in future.'))
+        emails = new_emails
+        with open(config['files']['emails'], 'w') as f:
+            f.write(json.dumps(emails, indent=4))
+
+
+# Temporary, switches emails.json over from using Usernames to User IDs.
+switchToIds()
+
 if config.getboolean('password_validation', 'enabled'):
     validator = PasswordValidator(config['password_validation']['min_length'],
                                   config['password_validation']['upper'],
@@ -113,13 +143,13 @@ def newUser():
                     jf.setPolicy(user.json()['Id'], default_policy)
                 except:
                     log.debug('setPolicy failed')
-                if config.getboolean('email', 'enabled'):
+                if config.getboolean('password_resets', 'enabled'):
                     try:
                         with open(config['files']['emails'], 'r') as f:
                             emails = json.load(f)
                     except (FileNotFoundError, json.decoder.JSONDecodeError):
                         emails = {}
-                    emails[data['username']] = data['email']
+                    emails[user.json()['Id']] = data['email']
                     with open(config['files']['emails'], 'w') as f:
                         f.write(json.dumps(emails, indent=4))
                     log.debug('Email address stored')
@@ -251,3 +281,45 @@ def modifyConfig():
         temp_config.write(config_file)
     log.debug('Config written')
     return jsonify(data)
+
+
+@app.route('/getUsers', methods=['GET', 'POST'])
+@auth.login_required
+def getUsers():
+    log.debug('User and email list requested')
+    try:
+        with open(config['files']['emails'], 'r') as f:
+            emails = json.load(f)
+    except (FileNotFoundError, json.decoder.JSONDecodeError):
+        emails = {}
+    response = {'users': []}
+    users = jf.getUsers(public=False)
+    for user in users:
+        entry = {'name': user['Name']}
+        if user['Id'] in emails:
+            entry['email'] = emails[user['Id']]
+        response['users'].append(entry)
+    return jsonify(response)
+
+@app.route('/modifyUsers', methods=['POST'])
+@auth.login_required
+def modifyUsers():
+    data = request.get_json()
+    log.debug('User and email list modification requested')
+    try:
+        with open(config['files']['emails'], 'r') as f:
+            emails = json.load(f)
+    except (FileNotFoundError, json.decoder.JSONDecodeError):
+        emails = {}
+    for key in data:
+        uid = jf.getUsers(key, public=False)['Id']
+        log.debug(f'Email for user "{key}" modified')
+        emails[uid] = data[key]
+    try:
+        with open(config['files']['emails'], 'w') as f:
+            f.write(json.dumps(emails, indent=4))
+        return resp()
+    except:
+        return resp(success=False)
+
+