Auth\Db: add edit_user CLI command

src/Auth/Db.php

@@ -8,6 +8,8 @@ use EesyPHP\Log;
 
 use Exception;
 
+use function EesyPHP\vardump;
+
 class Db extends Backend {
 
   /**
@@ -70,8 +72,19 @@ class Db extends Backend {
     self :: $password_field = App::get('auth.db.password_field', null, 'string');
     self :: $exposed_fields = App::get('auth.db.exposed_fields', null, 'array');
 
-    if (App :: get('cli.enabled'))
+    if (App :: get('cli.enabled')) {
-      Cli :: add_command('add_user', ['\\EesyPHP\\Auth\\Db', 'cli_add_user'], 'Add user');
+      Cli :: add_command(
+        'add_user',
+        ['\\EesyPHP\\Auth\\Db', 'cli_add_user'],
+        'Add user'
+      );
+      Cli :: add_command(
+        'edit_user',
+        ['\\EesyPHP\\Auth\\Db', 'cli_edit_user'],
+        'Edit user',
+        '[username]'
+      );
+    }
     return true;
   }
 
@@ -138,18 +151,29 @@ class Db extends Backend {
    */
   public static function add_user($info) {
     $values = [
-      App::get('auth.db.username_field') => $info['username'],
+      self :: $username_field => $info['username'] ?? null,
-      App::get('auth.db.password_field') => password_hash(
+      self :: $password_field => (
+        ($info['password'] ?? null)?
+        password_hash(
           $info['password'],
           constant('PASSWORD_'.strtoupper(App::get('auth.db.password_hash_algo')))
+        ):
+        null
       ),
     ];
     foreach($info as $field => $value) {
       if (!$value) {
-        Log :: error("add_user: field %s is missing", $field);
+        Log :: error("add_user: field %s is missing (or null)", $field);
         return false;
       }
     }
+
+    // Check username uniqueness
+    if (self :: get_user($info['username'])) {
+      Log :: error("add_user: a user with username %s already exist");
+      return false;
+    }
+
     foreach(App :: get('auth.db.exposed_fields') as $field)
       if (isset($info[$field]) && $info[$field])
         $values[$field] = $info[$field];
@@ -162,6 +186,83 @@ class Db extends Backend {
     return false;
   }
 
+  /**
+   * Update a user in database
+   * @param \EesyPHP\Auth\User $user      The user object
+   * @param array<string,mixed> $changes  Array of changes
+   * @param boolean $no_change_as_success Consider no change provided as success
+   *                                      (optional, default: false)
+   * @return boolean True if user was updated, false otherwise
+   */
+  public static function update_user($user, $changes, $no_change_as_success=False) {
+    Log::debug("update_user(%s): changes=%s", $user->username, vardump($changes));
+    if (!$user->username) {
+      Log::error("update_user(): Invalid user provided (no username)");
+      return false;
+    }
+    if (!is_array($changes)) {
+      Log::error("update_user(%s): Invalid changes provided (not an array)", $user->username);
+      return false;
+    }
+    $values = [];
+    foreach($changes as $field => $value) {
+      switch ($field) {
+        case "username":
+          if ($value != $user->username) {
+            // Check username uniqueness
+            if (self :: get_user($value)) {
+              Log :: error(
+                "update_user(%s): invalid new username '%s': another user with this username already exist",
+                $user->username,
+                $value
+              );
+              return false;
+            }
+            $values[self :: $username_field] = $value;
+          }
+          break;
+        case "password":
+          if (!password_verify($value, $user["password"]))
+            $values[self :: $password_field] = password_hash(
+              $value,
+              constant('PASSWORD_'.strtoupper(App::get('auth.db.password_hash_algo')))
+            );
+          break;
+        default:
+          if (in_array($field, App :: get('auth.db.exposed_fields'))) {
+            if ($value != $user[$field])
+              $values[$field] = $values;
+            break;
+          }
+          Log :: error("update_user: unknown field %s", $field);
+          return false;
+      }
+    }
+
+    if (empty($values)) {
+      Log::log(
+        $no_change_as_success?"DEBUG":"ERROR",
+        "update_user(%s): no change",
+        $user->username
+      );
+      return $no_change_as_success;
+    }
+
+    Log::debug("update_user(%s): changes=%s", $user->username, vardump($values));
+    if (
+      self :: $class :: update(
+        self :: $users_table,
+        $values,
+        [App::get('auth.db.username_field') => $user->username]
+      )
+    ) {
+      Log :: info('update_user(%s): user updated', $user->username);
+      return true;
+    }
+    Log :: error('update_user(%s): error adding user', $user->username);
+    return false;
+  }
+
   /**
    * CLI command to add user
    * @param array $command_args  Command arguments
@@ -189,4 +290,41 @@ class Db extends Backend {
     }
     Log :: fatal("Error occurred adding user %s", $info['username']);
   }
+
+  /**
+   * CLI command to edit an existing user
+   * @param array $command_args  Command arguments
+   * @return bool
+   */
+  public static function cli_edit_user($command_args) {
+    if (count($command_args) != 1)
+      Cli :: usage();
+    $username = $command_args[0];
+    $user = self :: get_user($username);
+    if (!$user) Cli :: usage("Invalid user '$username'");
+    $changes = [
+      "username" => trim(
+        Cli::ask_user("Please enter user new username [$username]: ")
+      ),
+      "password" => Cli::ask_user("Please enter user new password [empty = unchange]: ", true),
+    ];
+    if (!$changes["username"]) unset($changes["username"]);
+    if (!$changes["password"]) unset($changes["password"]);
+
+    foreach(self :: $exposed_fields as $field) {
+      $value = Cli::ask_user("Please enter user $field [{$user[$field]}]: ");
+      if (empty($value))
+          continue;
+      $changes[$field] = $value;
+    }
+    if (!$changes) {
+      print("No change.\n");
+      return true;
+    }
+    if (self :: update_user($user, $changes)) {
+      printf("User %s updated\n", $username);
+      return true;
+    }
+    Log :: fatal("Error occurred updating user %s", $username);
+  }
 }

src/Auth/User.php

@@ -108,6 +108,14 @@ class User {
     }
   }
 
+  /**
+   * ArrayAccess interface
+   */
+  public function offsetExists($offset) { return self :: __isset($offset); }
+  public function offsetGet($offset){ return self :: __get($offset); }
+  public function offsetSet($offset, $value) { self :: __set($offset, $value); }
+  public function offsetUnset($offset) { self :: __set($offset, null); }
+
   /**
    * Check user password
    * @param string $password