refactor: refactor controllers, services, validation and introduce DTOs, FormRequests and domain exceptions

app/Http/Requests/Admin/StoreUserRequest.php

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+<?php
+
+namespace App\Http\Requests\Admin;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class StoreUserRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true; // Middleware handles authorization
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'msnv'        => 'required|integer|unique:user,msnv',
+            'name'        => 'required|string|max:255',
+            'mail'        => 'required|email|unique:user,mail',
+            'departments' => 'required|string|in:' . implode(',', config('constants.DEPARTMENTS')),
+            'password'    => 'required|string',
+            'role'        => 'required|in:' . config('constants.ROLE_MEMBER') . ',' . config('constants.ROLE_ADMIN'),
+        ];
+    }
+}

app/Http/Requests/Admin/UpdateAddCardRequest.php

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+<?php
+
+namespace App\Http\Requests\Admin;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateAddCardRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'num_card' => 'required|integer|min:1',
+            'seller'   => 'required|exists:user,msnv',
+            'date'     => 'required|date',
+        ];
+    }
+}

app/Http/Requests/Admin/UpdateUserRequest.php

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+<?php
+
+namespace App\Http\Requests\Admin;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateUserRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    protected function prepareForValidation(): void
+    {
+        // Only set default flag_send to 0 if the route is for user update and flag_send is not present
+        if (($this->isMethod('put') || $this->isMethod('patch')) && !$this->has('flag_send')) {
+            $this->merge([
+                'flag_send' => config('constants.FLAG_SEND_DISABLED'),
+            ]);
+        }
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'card'        => 'nullable|integer|min:0',
+            'num_card'    => 'nullable|integer|min:1',
+            'role'        => 'nullable|in:' . config('constants.ROLE_MEMBER') . ',' . config('constants.ROLE_ADMIN'),
+            'status'      => 'nullable|in:' . config('constants.STATUS_INACTIVE') . ',' . config('constants.STATUS_ACTIVE'),
+            'flag_send'   => 'nullable|in:0,1',
+            'first_login' => 'nullable|in:' . config('constants.FIRST_LOGIN_FALSE') . ',' . config('constants.FIRST_LOGIN_TRUE'),
+        ];
+    }
+}

app/Http/Requests/User/SendThankCardRequest.php

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+<?php
+
+namespace App\Http\Requests\User;
+
+use App\Models\Administration;
+use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
+
+class SendThankCardRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'receiver' => [
+                'required',
+                Rule::exists('user', 'msnv')->where('status', config('constants.STATUS_ACTIVE'))
+            ],
+            'amount'   => 'required|integer|min:1|max:' . Administration::MAX_SEND_CARD_PER_MONTH,
+        ];
+    }
+}

app/Http/Requests/User/UpdatePasswordRequest.php

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+<?php
+
+namespace App\Http\Requests\User;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdatePasswordRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'password' => 'required|min:6|confirmed',
+        ];
+    }
+
+    /**
+     * Get the custom validation error messages.
+     */
+    public function messages(): array
+    {
+        return [
+            'password.required'  => 'Mật khẩu mới không được để trống.',
+            'password.min'       => 'Mật khẩu mới phải có ít nhất 6 ký tự.',
+            'password.confirmed' => 'Mật khẩu xác nhận không trùng khớp.',
+        ];
+    }
+}

app/Http/Requests/User/UpdateProfileRequest.php

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+<?php
+
+namespace App\Http\Requests\User;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class UpdateProfileRequest extends FormRequest
+{
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'avatar'       => 'nullable|image|max:2048', // 2MB max
+            'new_password' => 'nullable|min:6|confirmed',
+        ];
+    }
+}