Very rough implementation of forgot password

src/Core/Commands/RequestPasswordResetCommand.php

@@ -0,0 +1,11 @@
+<?php namespace Flarum\Core\Commands;
+
+class RequestPasswordResetCommand
+{
+    public $email;
+
+    public function __construct($email)
+    {
+        $this->email = $email;
+    }
+}

src/Core/Handlers/Commands/RequestPasswordResetCommandHandler.php

@@ -0,0 +1,52 @@
+<?php namespace Flarum\Core\Handlers\Commands;
+
+use Flarum\Core\Commands\RequestPasswordResetCommand;
+use Flarum\Core\Models\ResetToken;
+use Flarum\Core\Repositories\UserRepositoryInterface;
+use Illuminate\Contracts\Mail\Mailer;
+use Illuminate\Database\Eloquent\ModelNotFoundException;
+
+class RequestPasswordResetCommandHandler
+{
+    /**
+     * @var UserRepositoryInterface
+     */
+    protected $users;
+
+    /**
+     * The mailer instance.
+     *
+     * @var \Illuminate\Contracts\Mail\Mailer
+     */
+    protected $mailer;
+
+    public function __construct(UserRepositoryInterface $users, Mailer $mailer)
+    {
+        $this->users = $users;
+        $this->mailer = $mailer;
+    }
+
+    public function handle(RequestPasswordResetCommand $command)
+    {
+        $user = $this->users->findByEmail($command->email);
+
+        if (! $user) {
+            throw new ModelNotFoundException;
+        }
+
+        $token = ResetToken::generate($user->id);
+        $token->save();
+
+        $data = [
+            'username' => $user->username,
+            'url' => route('flarum.forum.resetPassword', ['token' => $token->id])
+        ];
+
+        $this->mailer->send(['text' => 'flarum::emails.reset'], $data, function ($message) use ($user) {
+            $message->to($user->email);
+            $message->subject('Reset Your Password');
+        });
+
+        return $user;
+    }
+}

src/Core/Models/ResetToken.php

@@ -0,0 +1,44 @@
+<?php namespace Flarum\Core\Models;
+
+class ResetToken extends Model
+{
+    /**
+     * The table associated with the model.
+     *
+     * @var string
+     */
+    protected $table = 'reset_tokens';
+
+    /**
+     * Use a custom primary key for this model.
+     *
+     * @var boolean
+     */
+    public $incrementing = false;
+
+    /**
+     * Generate a reset token for the specified user.
+     *
+     * @param  int  $userId
+     * @return static
+     */
+    public static function generate($userId)
+    {
+        $token = new static;
+
+        $token->id = str_random(40);
+        $token->user_id = $userId;
+
+        return $token;
+    }
+
+    /**
+     * Define the relationship with the owner of this reset token.
+     *
+     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
+     */
+    public function user()
+    {
+        return $this->belongsTo('Flarum\Core\Models\User');
+    }
+}

src/Core/Repositories/EloquentUserRepository.php

@@ -45,6 +45,17 @@ class EloquentUserRepository implements UserRepositoryInterface
         return User::where($field, $identification)->first();
     }
 
+    /**
+     * Find a user by email.
+     *
+     * @param  string  $email
+     * @return \Flarum\Core\Models\User|null
+     */
+    public function findByEmail($email)
+    {
+        return User::where('email', $email)->first();
+    }
+
     /**
      * Get the ID of a user with the given username.
      *

src/Core/Repositories/UserRepositoryInterface.php

@@ -31,6 +31,14 @@ interface UserRepositoryInterface
      */
     public function findByIdentification($identification);
 
+    /**
+     * Find a user by email.
+     *
+     * @param  string  $email
+     * @return \Flarum\Core\Models\User|null
+     */
+    public function findByEmail($email);
+
     /**
      * Get the ID of a user with the given username.
      *