<?php
declare(strict_types=1);

namespace App\Vo;

use App\Dto\UserDto;

/**
 * 用户前端展示对象
 */
class UserVo
{
    private ?int $id = null;

    private string $username = '';

    private string $email = '';

    private string $nickname = '';

    private string $phone = '';

    private string $avatar = '';

    private ?int $status = null;

    private ?string $statusText = null;

    private ?string $roleName = null;

    private ?string $createdAt = null;

    private ?string $updatedAt = null;

    private ?string $lastLoginAt = null;

    private array $permissions = [];

    private array $roles = [];

    private array $extra = [];

    public function __construct(UserDto $userDto = null)
    {
        if ($userDto) {
            $this->fromDto($userDto);
        }
    }

    public function getId(): ?int
    {
        return $this->id;
    }

    public function setId(int $id): self
    {
        $this->id = $id;
        return $this;
    }

    public function getUsername(): string
    {
        return $this->username;
    }

    public function setUsername(string $username): self
    {
        $this->username = $username;
        return $this;
    }

    public function getEmail(): string
    {
        return $this->email;
    }

    public function setEmail(string $email): self
    {
        $this->email = $email;
        return $this;
    }

    public function getNickname(): string
    {
        return $this->nickname;
    }

    public function setNickname(string $nickname): self
    {
        $this->nickname = $nickname;
        return $this;
    }

    public function getPhone(): string
    {
        return $this->phone;
    }

    public function setPhone(string $phone): self
    {
        $this->phone = $phone;
        return $this;
    }

    public function getAvatar(): string
    {
        return $this->avatar;
    }

    public function setAvatar(string $avatar): self
    {
        $this->avatar = $avatar;
        return $this;
    }

    public function getStatus(): ?int
    {
        return $this->status;
    }

    public function setStatus(int $status): self
    {
        $this->status = $status;
        $this->statusText = $this->getStatusText($status);
        return $this;
    }

    public function getStatusText(): ?string
    {
        return $this->statusText;
    }

    public function getRoleName(): ?string
    {
        return $this->roleName;
    }

    public function setRoleName(string $roleName): self
    {
        $this->roleName = $roleName;
        return $this;
    }

    public function getCreatedAt(): ?string
    {
        return $this->createdAt;
    }

    public function setCreatedAt(string $createdAt): self
    {
        $this->createdAt = $createdAt;
        return $this;
    }

    public function getUpdatedAt(): ?string
    {
        return $this->updatedAt;
    }

    public function setUpdatedAt(string $updatedAt): self
    {
        $this->updatedAt = $updatedAt;
        return $this;
    }

    public function getLastLoginAt(): ?string
    {
        return $this->lastLoginAt;
    }

    public function setLastLoginAt(string $lastLoginAt): self
    {
        $this->lastLoginAt = $lastLoginAt;
        return $this;
    }

    public function getPermissions(): array
    {
        return $this->permissions;
    }

    public function setPermissions(array $permissions): self
    {
        $this->permissions = $permissions;
        return $this;
    }

    public function getRoles(): array
    {
        return $this->roles;
    }

    public function setRoles(array $roles): self
    {
        $this->roles = $roles;
        return $this;
    }

    public function getExtra(): array
    {
        return $this->extra;
    }

    public function setExtra(array $extra): self
    {
        $this->extra = $extra;
        return $this;
    }

    /**
     * 添加额外信息
     */
    public function addExtra(string $key, mixed $value): self
    {
        $this->extra[$key] = $value;
        return $this;
    }

    /**
     * 从DTO转换
     */
    public function fromDto(UserDto $dto): self
    {
        $this->id = $dto->getId();
        $this->username = $dto->getUsername();
        $this->email = $dto->getEmail();
        $this->nickname = $dto->getNickname();
        $this->phone = $dto->getPhone();
        $this->avatar = $dto->getAvatar();
        $this->status = $dto->getStatus();
        $this->statusText = $this->getStatusText($this->status);
        $this->roleName = $dto->getRoleName();
        $this->permissions = $dto->getPermissions();
        $this->roles = $dto->getRoles();

        // 格式化日期
        if ($dto->getCreatedAt()) {
            $this->createdAt = $dto->getCreatedAt()->format('Y-m-d H:i:s');
        }
        if ($dto->getUpdatedAt()) {
            $this->updatedAt = $dto->getUpdatedAt()->format('Y-m-d H:i:s');
        }
        if ($dto->getLastLoginAt()) {
            $this->lastLoginAt = $dto->getLastLoginAt()->format('Y-m-d H:i:s');
        }

        return $this;
    }

    /**
     * 获取状态文本
     */
    private function getStatusText(int $status): string
    {
        return match ($status) {
            1 => '正常',
            2 => '禁用',
            3 => '待审核',
            0 => '删除',
            default => '未知'
        };
    }

    /**
     * 获取显示名称（优先使用昵称）
     */
    public function getDisplayName(): string
    {
        return !empty($this->nickname) ? $this->nickname : $this->username;
    }

    /**
     * 获取头像URL（默认头像）
     */
    public function getAvatarUrl(): string
    {
        if (!empty($this->avatar)) {
            return $this->avatar;
        }

        // 默认头像
        return 'https://via.placeholder.com/100x100?text=' . urlencode(substr($this->getDisplayName(), 0, 1));
    }

    /**
     * 获取手机号显示格式（隐藏中间4位）
     */
    public function getPhoneDisplay(): string
    {
        if (empty($this->phone)) {
            return '';
        }

        return substr($this->phone, 0, 3) . '****' . substr($this->phone, -4);
    }

    /**
     * 获取邮箱显示格式（隐藏部分字符）
     */
    public function getEmailDisplay(): string
    {
        if (empty($this->email)) {
            return '';
        }

        $parts = explode('@', $this->email);
        if (count($parts) !== 2) {
            return $this->email;
        }

        $username = $parts[0];
        $domain = $parts[1];

        if (strlen($username) <= 3) {
            $maskedUsername = str_repeat('*', strlen($username));
        } else {
            $maskedUsername = substr($username, 0, 2) . str_repeat('*', strlen($username) - 2);
        }

        return $maskedUsername . '@' . $domain;
    }

    /**
     * 检查是否在线
     */
    public function isOnline(): bool
    {
        if (!$this->lastLoginAt) {
            return false;
        }

        $lastLoginTime = strtotime($this->lastLoginAt);
        $onlineThreshold = 30 * 60; // 30分钟内在线

        return (time() - $lastLoginTime) < $onlineThreshold;
    }

    /**
     * 检查是否活跃用户
     */
    public function isActive(): bool
    {
        return $this->status === 1;
    }

    /**
     * 获取用户标签
     */
    public function getTags(): array
    {
        $tags = [];

        if ($this->isActive()) {
            $tags[] = ['text' => '正常', 'type' => 'success'];
        } else {
            $tags[] = ['text' => $this->statusText, 'type' => 'danger'];
        }

        if ($this->isOnline()) {
            $tags[] = ['text' => '在线', 'type' => 'primary'];
        }

        if (!empty($this->roleName)) {
            $tags[] = ['text' => $this->roleName, 'type' => 'info'];
        }

        return $tags;
    }

    /**
     * 转换为数组（用于API响应）
     */
    public function toArray(): array
    {
        return [
            'id' => $this->id,
            'username' => $this->username,
            'email' => $this->email,
            'nickname' => $this->nickname,
            'phone' => $this->phone,
            'avatar' => $this->avatar,
            'status' => $this->status,
            'status_text' => $this->statusText,
            'role_name' => $this->roleName,
            'created_at' => $this->createdAt,
            'updated_at' => $this->updatedAt,
            'last_login_at' => $this->lastLoginAt,
            'permissions' => $this->permissions,
            'roles' => $this->roles,
            'extra' => $this->extra,
            // 计算属性
            'display_name' => $this->getDisplayName(),
            'avatar_url' => $this->getAvatarUrl(),
            'phone_display' => $this->getPhoneDisplay(),
            'email_display' => $this->getEmailDisplay(),
            'is_online' => $this->isOnline(),
            'is_active' => $this->isActive(),
            'tags' => $this->getTags(),
        ];
    }

    /**
     * 转换为精简数组（用于列表显示）
     */
    public function toSimpleArray(): array
    {
        return [
            'id' => $this->id,
            'username' => $this->username,
            'nickname' => $this->nickname,
            'avatar' => $this->getAvatarUrl(),
            'status' => $this->status,
            'status_text' => $this->statusText,
            'role_name' => $this->roleName,
            'is_online' => $this->isOnline(),
            'tags' => $this->getTags(),
        ];
    }

    /**
     * 转换为公开数组（隐藏敏感信息）
     */
    public function toPublicArray(): array
    {
        return [
            'id' => $this->id,
            'username' => $this->username,
            'nickname' => $this->nickname,
            'avatar' => $this->getAvatarUrl(),
            'role_name' => $this->roleName,
            'created_at' => $this->createdAt,
        ];
    }

    /**
     * 批量转换DTO数组为VO数组
     */
    public static function fromDtoArray(array $dtos): array
    {
        return array_map(fn($dto) => new self($dto), $dtos);
    }

    /**
     * 批量转换为数组
     */
    public static function toArrayBatch(array $vos, string $type = 'full'): array
    {
        return array_map(function($vo) use ($type) {
            return match ($type) {
                'simple' => $vo->toSimpleArray(),
                'public' => $vo->toPublicArray(),
                default => $vo->toArray()
            };
        }, $vos);
    }
}