<?php

namespace App\Libs;

use App\Models\MpUserPointsDetail;
use Illuminate\Support\Facades\DB;

/**
 * 积分明细展示辅助类
 *
 * 统一定义积分流水（列表/导出）对外展示的模型名与分辨率：
 * - 模型名：隐藏供应商字样（百度/快快AI/智帧/字节跳动等），如百度Seedance2.0 → Seedance2.0
 *   模型展示名优先取配置表（mp_video_models / mp_image_models / mp_text_models）的 name，
 *   配置缺失时回退内置映射，仍未命中则仅剥离供应商前缀原样返回。
 * - 分辨率：视频显示 480p/720p/1080p/4k 与 超分720p/超分1080p；图片显示 实际宽*高（如 1600*2848）；
 *   其他类型（AI对话/积分发放等）返回空串。
 */
class PointsDisplay
{
    /**
     * 需要从展示名中隐藏的供应商字样（仅处理名称开头的前缀）
     */
    const VENDOR_WORDS = [
        '百度',
        '快快AI',
        '快快',
        '智帧平台',
        '智帧',
        '字节跳动',
    ];

    /**
     * 英文供应商前缀（模型ID开头）
     */
    const VENDOR_PREFIXES = [
        'baidu-',
        'kuaikuai-',
    ];

    /**
     * 配置表缺失时的内置兜底映射（模型ID => 展示名）
     */
    const MODEL_NAME_FALLBACK = [
        // 视频（Seedance 系列）
        'doubao-seedance-1-5-pro-251215'       => 'Seedance1.5pro',
        'doubao-seedance-1-0-pro-250528'       => 'Seedance1.0pro',
        'doubao-seedance-1-0-pro-fast-251015'  => 'Seedance1.0profast',
        'doubao-seedance-2-0-260128'           => 'Seedance2.0',
        'doubao-seedance-2-0-fast-260128'      => 'Seedance2.0fast',
        'doubao-seedance-2.0'                  => 'Seedance2.0',
        'baidu-doubao-seedance-2-0-260128'     => 'Seedance2.0',
        'baidu-doubao-seedance-2-0-fast-260128' => 'Seedance2.0fast',
        'baidu-doubao-seedance-2-0-mini-260615' => 'Seedance2.0mini',
        'baidu-doubao-seedance-2-5-260628'     => 'Seedance2.5',
        'baidu-dreamina-seedance-2-0-260128'      => 'Seedance2.0(海外)',
        'baidu-dreamina-seedance-2-0-fast-260128' => 'Seedance2.0fast(海外)',
        'baidu-dreamina-seedance-2-0-mini-260615' => 'Seedance2.0mini(海外)',
        'baidu-dreamina-seedance-2-5-260628'      => 'Seedance2.5(海外)',
        'zhizhen-20'                           => 'Seedance2.0',
        'zhizhen-20-fast'                      => 'Seedance2.0fast',
        'zhizhen-20-mini'                      => 'Seedance2.0mini',
        'seed-2'                               => 'Seedance2.0',
        'seed-2-fast'                          => 'Seedance2.0fast',
        'seed-2-mini'                          => 'Seedance2.0mini',
        'seed-2.5'                             => 'Seedance2.5',
        // 文本
        'baidu-glm-5.2'                        => 'GLM-5.2',
        'baidu-glm-5.3'                        => 'GLM-5.3',
    ];

    /**
     * 视频分辨率取值 => 展示文案
     */
    const VIDEO_RESOLUTION_LABELS = [
        '480p'       => '480p',
        '720p'       => '720p',
        '1080p'      => '1080p',
        '4k'         => '4k',
        '2160p'      => '4k',
        '4096x2160'  => '4k',
        'sr_720p'    => '超分720p',
        'sr720p'     => '超分720p',
        '超分720p'    => '超分720p',
        'sr_1080p'   => '超分1080p',
        'sr1080p'    => '超分1080p',
        '超分1080p'   => '超分1080p',
    ];

    /**
     * 配置表读取的模型展示名缓存（单次请求内只查一次）
     *
     * @var array|null
     */
    private static $modelNameMap = null;

    /**
     * 获取模型对外展示名（隐藏百度/快快等供应商字样）
     *
     * @param string $model 模型ID（charge_info.model）
     * @return string
     */
    public static function modelName(string $model = ''): string
    {
        $model = trim($model);
        if ($model === '' || $model === 'unknown') {
            return '';
        }

        $map = self::modelNameMap();
        $name = $map[$model] ?? self::MODEL_NAME_FALLBACK[$model] ?? '';
        if ($name === '') {
            $name = $model;
        }

        return self::stripVendor($name);
    }

    /**
     * 获取明细的分辨率展示文案
     *
     * - 视频：480p/720p/1080p/4k、超分720p、超分1080p（来自 charge_info.video_resolution）
     * - 图片：实际宽*高，如 1600*2848（来自 charge_info.width / height）
     * - 其他类型或无数据：空串
     *
     * @param string $type       明细类型（video/image/chat/system/company）
     * @param array  $chargeInfo 计费信息
     * @return string
     */
    public static function resolution(string $type, array $chargeInfo = []): string
    {
        if ($type === MpUserPointsDetail::TYPE_VIDEO) {
            $resolution = strtolower(trim((string)getProp($chargeInfo, 'video_resolution', '')));
            if ($resolution === '') {
                return '';
            }

            return self::VIDEO_RESOLUTION_LABELS[$resolution] ?? $resolution;
        }

        if ($type === MpUserPointsDetail::TYPE_IMAGE) {
            $width = (int)getProp($chargeInfo, 'width', 0);
            $height = (int)getProp($chargeInfo, 'height', 0);
            if ($width <= 0 || $height <= 0) {
                return '';
            }

            return $width . '*' . $height;
        }

        return '';
    }

    /**
     * 仅保留名称主体：剥离供应商字样前缀（百度Seedance2.0 → Seedance2.0，baidu-xxx → xxx）
     *
     * @param string $name
     * @return string
     */
    private static function stripVendor(string $name): string
    {
        $name = trim($name);

        // 英文前缀（模型ID形态）
        foreach (self::VENDOR_PREFIXES as $prefix) {
            if (stripos($name, $prefix) === 0) {
                $name = trim(substr($name, strlen($prefix)));
            }
        }

        // 中文前缀（配置表 name 形态），可能连续出现（如“百度智帧xxx”）
        $changed = true;
        while ($changed) {
            $changed = false;
            foreach (self::VENDOR_WORDS as $word) {
                if (mb_strpos($name, $word) === 0) {
                    $name = trim(mb_substr($name, mb_strlen($word)));
                    $changed = true;
                    break;
                }
            }
        }

        return $name;
    }

    /**
     * 模型ID => 配置表展示名（读取失败或未命中时返回空数组，由调用方走兜底映射）
     *
     * @return array
     */
    private static function modelNameMap(): array
    {
        if (self::$modelNameMap !== null) {
            return self::$modelNameMap;
        }

        $map = [];
        foreach (['mp_video_models', 'mp_image_models', 'mp_text_models'] as $table) {
            try {
                $rows = DB::table($table)->select('model', 'name')->get();
            } catch (\Throwable $e) {
                continue;
            }

            foreach ($rows as $row) {
                $model = trim((string)getProp($row, 'model', ''));
                $name = trim((string)getProp($row, 'name', ''));
                if ($model !== '' && $name !== '') {
                    $map[$model] = $name;
                }
            }
        }

        self::$modelNameMap = $map;

        return self::$modelNameMap;
    }
}