<?php
declare(strict_types=1);

namespace app\api\service;

use app\api\model\DysVideoLog;
use app\api\model\DyVideoUser;
use app\api\model\Member;
use think\db\Query;

/**
 * 视频作品服务。
 *
 * 该服务按 acgpmw `video_info.php` 的 `video_list()` / `get_videos()`
 * 最小可用范围对齐，为小程序提供视频作品列表的只读展示能力。
 */
class VideoWorkService
{
    /**
     * 平台中文名按 acgpmw `data/other/platforms.php` 对齐。
     */
    private const PLATFORM_NAME_MAP = [
        0 => 'D音',
        1 => 'K手',
        2 => 'B家号',
        3 => '小红薯',
        4 => '视P号',
        5 => 'B哩哔哩',
        6 => '公Z号',
        10 => 'TiTk',
    ];

    /**
     * 平台英文键按 acgpmw `data/other/platforms_py.php` 对齐。
     */
    private const PLATFORM_KEY_MAP = [
        0 => 'douyin',
        1 => 'kuaishou',
        2 => 'baijiahao',
        3 => 'xiaohongshu',
        4 => 'shipinhao',
        5 => 'bilibili',
        6 => 'gongzhonghao',
        10 => 'tiktok',
    ];

    /**
     * 获取视频作品列表。
     *
     * @param int $userid 当前登录用户ID
     * @param array<string, mixed> $params 前端查询参数
     * @return array<string, mixed>
     * @throws \Exception
     */
    public function getVideoList(int $userid, array $params = []): array
    {
        $member = Member::findByUserid($userid);
        if (!$member) {
            throw new \Exception('用户不存在', 4004);
        }

        $platform = $this->normalizeOptionalInt($params['platform'] ?? 'all', '平台参数格式错误');
        $vuid = $this->normalizeOptionalInt($params['vuid'] ?? 'all', '账号参数格式错误');
        $page = max(1, (int) ($params['page'] ?? 1));
        $pageSize = min(30, max(1, (int) ($params['page_size'] ?? 12)));

        $productInfo = $member->getProductInfo();
        $availablePlatforms = $this->resolveAvailablePlatforms($member, $productInfo);
        if (empty($availablePlatforms)) {
            throw new \Exception('暂无视频作品权限', 4004);
        }

        if ($platform !== null && !in_array($platform, $availablePlatforms, true)) {
            throw new \Exception('当前套餐暂无该平台权限', 4004);
        }

        $accountOptions = $this->loadAccountOptions($userid, $availablePlatforms);
        if ($vuid !== null && !array_key_exists($vuid, $accountOptions['map'])) {
            throw new \Exception('当前账号不存在或已解绑', 4004);
        }

        $baseQuery = $this->buildFilteredQuery($userid, [
            'platform' => $platform,
            'vuid' => $vuid,
        ]);

        $total = (int) (clone $baseQuery)->count();
        $records = (clone $baseQuery)
            ->field([
                'id',
                'vuid',
                'cron_id',
                'aweme_id',
                'aweme_nid',
                'dy_item_id',
                'dy_title',
                'kwords',
                'dy_video_status',
                'dy_cover',
                'dy_create_time',
                'dy_share_url',
                'dy_comment_count',
                'dy_digg_count',
                'dy_play_count',
                'addtime',
                'fabu_type',
                'disabled',
                'status',
                'fberrinfo',
                'platform',
                'tplid',
            ])
            ->order('id', 'desc')
            ->page($page, $pageSize)
            ->select()
            ->toArray();

        $items = [];
        foreach ($records as $record) {
            $items[] = $this->buildVideoItem($record, $accountOptions['map']);
        }

        return [
            'filters' => [
                'current_platform' => $platform,
                'platforms' => $this->buildPlatformFilters($userid, $availablePlatforms, $vuid, $platform),
                'current_vuid' => $vuid,
                'accounts' => $accountOptions['items'],
            ],
            'summary' => $this->buildSummary(clone $baseQuery),
            'pagination' => [
                'page' => $page,
                'page_size' => $pageSize,
                'total' => $total,
                'has_more' => $page * $pageSize < $total,
            ],
            'list' => $items,
        ];
    }

    /**
     * 加载账号筛选项。
     *
     * @param int $userid 用户ID
     * @param array<int> $availablePlatforms 可见平台
     * @return array{items: array<int, array<string, mixed>>, map: array<int, array<string, mixed>>}
     */
    private function loadAccountOptions(int $userid, array $availablePlatforms): array
    {
        $accounts = DyVideoUser::getVideoFilterAccountsByUserId($userid)->toArray();

        $items = [
            [
                'id' => null,
                'name' => '全部账号',
            ],
        ];
        $accountMap = [];

        foreach ($accounts as $account) {
            $platform = (int) ($account['platform'] ?? 0);
            if (!in_array($platform, $availablePlatforms, true)) {
                continue;
            }

            $accountId = (int) ($account['id'] ?? 0);
            $accountMap[$accountId] = $account;
            $items[] = [
                'id' => $accountId,
                'name' => sprintf(
                    '%s(%s)#P%d',
                    self::PLATFORM_NAME_MAP[$platform] ?? ('平台' . $platform),
                    (string) ($account['dy_nickname'] ?? '未命名账号'),
                    $accountId
                ),
            ];
        }

        return [
            'items' => $items,
            'map' => $accountMap,
        ];
    }

    /**
     * 构建筛选后的作品查询。
     *
     * @param int $userid 用户ID
     * @param array<string, int|null> $filters 筛选条件
     * @return Query
     */
    private function buildFilteredQuery(int $userid, array $filters): Query
    {
        $query = DysVideoLog::buildUserQuery($userid);

        if (($filters['vuid'] ?? null) !== null) {
            $query->where('vuid', (int) $filters['vuid']);
        }

        if (($filters['platform'] ?? null) !== null) {
            $query->where('platform', (int) $filters['platform']);
        }

        return $query;
    }

    /**
     * 构建平台筛选项。
     *
     * 这里按当前账号筛选条件统计数量，使前端切平台时与当前账号范围一致。
     *
     * @param int $userid 用户ID
     * @param array<int> $availablePlatforms 可见平台
     * @param int|null $vuid 当前账号筛选
     * @param int|null $currentPlatform 当前平台筛选
     * @return array<int, array<string, mixed>>
     */
    private function buildPlatformFilters(int $userid, array $availablePlatforms, ?int $vuid, ?int $currentPlatform): array
    {
        $tabs = [
            [
                'id' => null,
                'name' => '全部平台',
                'key' => 'all',
                'count' => 0,
            ],
        ];

        $allCount = 0;
        foreach ($availablePlatforms as $platform) {
            $query = $this->buildFilteredQuery($userid, [
                'platform' => $platform,
                'vuid' => $vuid,
            ]);
            $count = (int) $query->count();
            $allCount += $count;

            $tabs[] = [
                'id' => $platform,
                'name' => self::PLATFORM_NAME_MAP[$platform] ?? ('平台' . $platform),
                'key' => self::PLATFORM_KEY_MAP[$platform] ?? ('platform_' . $platform),
                'count' => $count,
                'active' => $currentPlatform === $platform,
            ];
        }

        $tabs[0]['count'] = $allCount;
        $tabs[0]['active'] = $currentPlatform === null;

        return $tabs;
    }

    /**
     * 构建顶部统计卡片。
     *
     * @param Query $query 已按当前筛选条件收窄的查询对象
     * @return array<string, int>
     */
    private function buildSummary(Query $query): array
    {
        return [
            'total' => (int) (clone $query)->count(),
            'published_count' => (int) (clone $query)->whereRaw('(dy_video_status in (1,5) or aweme_id <> "" or dy_item_id <> "" or aweme_nid <> "")')->count(),
            'reviewing_count' => (int) (clone $query)->where('dy_video_status', 4)->count(),
            'failed_count' => (int) (clone $query)->whereIn('status', [2, 3])->count(),
        ];
    }

    /**
     * 构建前端作品卡片数据。
     *
     * @param array<string, mixed> $record 原始作品记录
     * @param array<int, array<string, mixed>> $accountMap 账号信息映射
     * @return array<string, mixed>
     */
    private function buildVideoItem(array $record, array $accountMap): array
    {
        $platform = (int) ($record['platform'] ?? 0);
        $accountId = (int) ($record['vuid'] ?? 0);
        $account = $accountMap[$accountId] ?? [];
        $title = $this->buildVideoTitle($record);
        $previewUrl = $this->buildPreviewUrl($record);
        $statusInfo = $this->buildStatusInfo($record);
        $publishTimeText = $this->buildPublishTimeText($record);

        return [
            'id' => (int) ($record['id'] ?? 0),
            'title' => $title,
            'cover' => (string) ($record['dy_cover'] ?? ''),
            'platform' => $platform,
            'platform_name' => self::PLATFORM_NAME_MAP[$platform] ?? ('平台' . $platform),
            'platform_key' => self::PLATFORM_KEY_MAP[$platform] ?? ('platform_' . $platform),
            'account_id' => $accountId,
            'account_name' => (string) ($account['dy_nickname'] ?? '未命名账号'),
            'account_avatar' => (string) ($account['dy_avatar'] ?? ''),
            'cron_id' => (int) ($record['cron_id'] ?? 0),
            'tplid' => (int) ($record['tplid'] ?? 0),
            'play_count' => (int) ($record['dy_play_count'] ?? 0),
            'digg_count' => (int) ($record['dy_digg_count'] ?? 0),
            'comment_count' => (int) ($record['dy_comment_count'] ?? 0),
            'publish_time_text' => $publishTimeText,
            'status' => $statusInfo,
            'preview_url' => $previewUrl,
            'has_preview' => $previewUrl !== '',
            'is_article' => (int) ($record['fabu_type'] ?? 0) === 101,
            'display_code' => '#V' . (int) ($record['id'] ?? 0),
            'task_code' => '#C' . (int) ($record['cron_id'] ?? 0),
            'material_code' => (int) ($record['tplid'] ?? 0) > 0 ? '#M' . (int) $record['tplid'] : '',
        ];
    }

    /**
     * 组装作品标题。
     *
     * 对齐 acgpmw：优先 `dy_title`，否则使用 `kwords` 拼接。
     *
     * @param array<string, mixed> $record 原始作品记录
     * @return string
     */
    private function buildVideoTitle(array $record): string
    {
        $title = trim((string) ($record['dy_title'] ?? ''));
        if ($title !== '') {
            return $title;
        }

        $keywords = trim((string) ($record['kwords'] ?? ''), ',');
        if ($keywords === '') {
            return '暂无作品信息';
        }

        return '#' . str_replace(',', ' #', $keywords);
    }

    /**
     * 构建作品状态块。
     *
     * 对齐 acgpmw `get_videos()` 的状态展示优先级：
     * 1. 定时中
     * 2. 发布失败
     * 3. 已发布 / 未公开 / 审核中 / 好友可见 / 私密视频
     * 4. 待处理
     *
     * @param array<string, mixed> $record 原始作品记录
     * @return array<string, mixed>
     */
    private function buildStatusInfo(array $record): array
    {
        $platform = (int) ($record['platform'] ?? 0);
        $dyCreateTime = (int) ($record['dy_create_time'] ?? 0);
        $status = (int) ($record['status'] ?? 0);
        $dyVideoStatus = (int) ($record['dy_video_status'] ?? 0);
        $isPublished = !empty($record['aweme_id']) || !empty($record['dy_item_id']) || !empty($record['aweme_nid']);

        if (in_array($platform, [0, 4], true) && $dyCreateTime > time()) {
            return [
                'text' => '定时中',
                'tone' => 'warning',
                'hint' => '作品已进入定时发布队列',
            ];
        }

        if (in_array($status, [2, 3], true)) {
            $errorText = $this->translatePublishError((string) ($record['fberrinfo'] ?? ''), $platform);
            return [
                'text' => '发布失败',
                'tone' => 'danger',
                'hint' => $errorText !== '' ? $errorText : '作品发布失败，请回到原系统查看详情',
            ];
        }

        if (in_array($dyVideoStatus, [1, 5], true) || $isPublished) {
            return [
                'text' => '已发布',
                'tone' => 'success',
                'hint' => '作品已成功发布到对应平台',
            ];
        }

        if ($dyVideoStatus === 2) {
            return [
                'text' => '未公开',
                'tone' => 'danger',
                'hint' => '作品当前为未公开状态',
            ];
        }

        if ($dyVideoStatus === 4) {
            return [
                'text' => '审核中',
                'tone' => 'primary',
                'hint' => '作品已提交平台审核，请稍后查看',
            ];
        }

        if ($dyVideoStatus === 6) {
            return [
                'text' => '好友可见',
                'tone' => 'info',
                'hint' => '作品仅好友可见',
            ];
        }

        if ($dyVideoStatus === 7) {
            return [
                'text' => '私密视频',
                'tone' => 'warning',
                'hint' => '作品当前为私密视频',
            ];
        }

        return [
            'text' => '待处理',
            'tone' => 'slate',
            'hint' => '作品正在处理或等待平台返回结果',
        ];
    }

    /**
     * 构建发布时间文案。
     *
     * @param array<string, mixed> $record 原始作品记录
     * @return string
     */
    private function buildPublishTimeText(array $record): string
    {
        $platform = (int) ($record['platform'] ?? 0);
        $dyCreateTime = (int) ($record['dy_create_time'] ?? 0);
        $addtime = (int) ($record['addtime'] ?? 0);

        $publishTime = $addtime;
        if ($dyCreateTime > 0) {
            $publishTime = $dyCreateTime;
        }

        if (in_array($platform, [0, 4], true) && $dyCreateTime > time()) {
            return '将于 ' . $this->formatDateTime($dyCreateTime) . ' 发布';
        }

        return $this->formatDateTime($publishTime);
    }

    /**
     * 生成作品预览链接。
     *
     * 对齐 acgpmw `get_videos()` 中各平台的链接处理规则。
     *
     * @param array<string, mixed> $record 原始作品记录
     * @return string
     */
    private function buildPreviewUrl(array $record): string
    {
        $platform = (int) ($record['platform'] ?? 0);
        $status = (int) ($record['status'] ?? 0);
        $shareUrl = (string) ($record['dy_share_url'] ?? '');
        $awemeId = (string) ($record['aweme_id'] ?? '');
        $dyItemId = (string) ($record['dy_item_id'] ?? '');
        $dyCreateTime = (int) ($record['dy_create_time'] ?? 0);

        if ($platform === 0 && $shareUrl !== '') {
            $shareUrl = 'https://www.douyin.com/video/' . $awemeId;
            if (strpos((string) ($record['dy_share_url'] ?? ''), 'https://video-cn.snssdk.com/') !== false) {
                $shareUrl = (string) ($record['dy_share_url'] ?? '');
            }
            if ($dyCreateTime < time() && $awemeId !== '') {
                $shareUrl = 'https://www.douyin.com/video/' . $awemeId;
            }
        }

        if ($platform === 5 && $status === 1 && $dyItemId !== '') {
            $shareUrl = 'https://www.bilibili.com/video/' . $dyItemId;
        }

        if ($platform === 2 && $status === 1 && $dyItemId !== '') {
            $shareUrl = 'https://mbd.baidu.com/newspage/data/videolanding?nid=sv_' . $dyItemId;
        }

        if ($platform === 4 && strpos($shareUrl, 'https://weixin.qq.com/sph/') === false) {
            $shareUrl = '';
        }

        return $shareUrl;
    }

    /**
     * 解析发布异常原因。
     *
     * 这里直接沿用 acgpmw `video_info::getycinfo()` 的关键信息匹配规则。
     *
     * @param string $errorInfo 原始错误信息
     * @param int $platform 平台编号
     * @return string
     */
    private function translatePublishError(string $errorInfo, int $platform): string
    {
        if ($errorInfo === '') {
            return '';
        }

        if ($platform === 0) {
            $map = [
                '"error_code":10008' => '授权过期',
                '用户未登录' => '授权过期',
                '上传视频按钮超时' => '视频上传超时',
                '寻找描述输入框超时' => '素材或内容处理超时',
                '"error_code":2114033,' => '包含不合法文字',
                '"status_code":-2158,' => '发布频繁或异常',
                '"error_code":2100005,' => '参数不合法',
                '"error_code":2190003,' => '授权异常',
                '"error_code":2114005,' => '视频投稿功能已封禁[#G]',
                '"error_code":2100004,' => '系统繁忙异常',
                '"status_code":-20' => '视频投稿功能已封禁[#M]',
                '"error_code":2190019,' => '系统发布失败或异常',
                '"status_msg":"sms"' => '发布短信验证',
                '健康分不足投稿功能受限' => '健康分不足投稿功能受限',
            ];

            return $this->matchErrorText($errorInfo, $map);
        }

        if ($platform === 1) {
            return $this->matchErrorText($errorInfo, [
                'ACCESS_DENIED' => '授权过期',
                'user_request_limit' => '发布限制或异常',
                'video_not_uploaded' => '视频上传异常',
            ]);
        }

        if ($platform === 2) {
            return $this->matchErrorText($errorInfo, [
                '"errno":60001009' => '账号内容质量不足，今日还可发布0篇内容',
                '"errno":60000005' => '账号状态异常',
                '"errno":105011' => '百家号开放平台业务调整，已关闭您的接口使用权限',
            ]);
        }

        if ($platform === 3) {
            return $this->matchErrorText($errorInfo, [
                '当日发布数已达到上限' => '当日发布数已达到上限',
                '系统正在升级中' => '系统平台升级维护中',
                '发布笔记需要绑定手机' => '发布笔记需要绑定手机号',
                '笔记发布失败' => '作品笔记发布失败',
                '用户被封号' => '用户被封号',
            ]);
        }

        if ($platform === 4) {
            return $this->matchErrorText($errorInfo, [
                '"errcode":-11217' => '暂未绑定手机号',
                '"errcode":-11216' => '完成实名后才可以发表',
                'cookie失效' => '授权过期',
                '"errCode":300334' => '授权过期（授权完有其他扫码操作）',
            ]);
        }

        return '';
    }

    /**
     * 按关键字匹配错误提示。
     *
     * @param string $errorInfo 原始错误信息
     * @param array<string, string> $map 关键字到提示文案映射
     * @return string
     */
    private function matchErrorText(string $errorInfo, array $map): string
    {
        foreach ($map as $needle => $message) {
            if (strpos($errorInfo, $needle) !== false) {
                return $message;
            }
        }

        return '';
    }

    /**
     * 计算当前用户可见平台。
     *
     * 对齐 acgpmw：
     * 1. 先使用已按 `MemberController` 二次加工后的套餐平台
     * 2. 146/147 且不在特殊名单中，只允许 D音
     *
     * @param Member $member 当前登录用户
     * @param array<string, mixed>|null $productInfo 套餐信息
     * @return array<int>
     */
    private function resolveAvailablePlatforms(Member $member, ?array $productInfo): array
    {
        $platformText = trim((string) ($productInfo['platforms'] ?? ''), ',');
        if ($platformText === '') {
            return [];
        }

        $platforms = array_values(array_filter(array_map('intval', explode(',', $platformText)), static function ($item) {
            return array_key_exists($item, self::PLATFORM_NAME_MAP);
        }));

        $specialAccounts = $this->loadSpecialAccounts();
        $isRestrictedVType = in_array((int) $member->v_type, [146, 147], true);
        $isSpecialAccount = in_array((int) $member->userid, $specialAccounts, true);

        if ($isRestrictedVType && !$isSpecialAccount) {
            return [0];
        }

        return $platforms;
    }

    /**
     * 加载云图文特殊账号名单。
     *
     * @return array<int>
     */
    private function loadSpecialAccounts(): array
    {
        $file = root_path() . '../acgpmw/data/other/tw_special_account.php';
        if (!is_file($file)) {
            return [];
        }

        $accounts = require $file;

        return is_array($accounts) ? array_values(array_map('intval', $accounts)) : [];
    }

    /**
     * 规范化可选整数参数。
     *
     * @param mixed $value 原始输入
     * @param string $errorMessage 错误提示
     * @return int|null
     * @throws \Exception
     */
    private function normalizeOptionalInt($value, string $errorMessage): ?int
    {
        if ($value === null || $value === '' || $value === 'all') {
            return null;
        }

        if (!is_numeric((string) $value)) {
            throw new \Exception($errorMessage, 400);
        }

        return (int) $value;
    }

    /**
     * 统一格式化时间。
     *
     * @param int $timestamp 时间戳
     * @return string
     */
    private function formatDateTime(int $timestamp): string
    {
        if ($timestamp <= 0) {
            return '--';
        }

        return date('Y-m-d H:i', $timestamp);
    }
}