<?php

namespace App\Service\common\ai;

use App\BaseApp\BaseService;
use App\Models\new\ai\AiDoctorConsentModel;
use App\Models\new\ai\AiFeatureCopyModel;
use App\Models\new\vip\VipFeatureModel;

/**
 * AI 醒目提示文案 + 首次知情同意
 * 文案按 VIP 功能码隔离；医生签署后仅该功能无需再次确认
 */
class AiDisclaimerService extends BaseService
{
    public const FEATURE_MR = 'ai_medical_record';
    public const FEATURE_RX = 'ai_prescription';

    /**
     * 系统配置：启用中的文案列表（含 VIP 功能名）
     */
    public function listCopiesForConfig(): array
    {
        $rows = AiFeatureCopyModel::where('deleted_at', 0)
            ->orderByDesc('sort')
            ->orderBy('id')
            ->get()
            ->toArray();
        $nameMap = VipFeatureModel::where('deleted_at', 0)
            ->whereIn('code', array_column($rows, 'feature_code'))
            ->get(['code', 'name'])
            ->keyBy('code')
            ->toArray();
        foreach ($rows as &$row) {
            $code = (string) ($row['feature_code'] ?? '');
            $row['feature_name'] = $nameMap[$code]['name'] ?? $code;
            $row['disclaimer_text'] = (string) ($row['disclaimer_text'] ?? '');
            $row['consent_text'] = (string) ($row['consent_text'] ?? '');
        }
        unset($row);
        return $rows;
    }

    /**
     * 批量保存文案（系统配置 AI 模型 Tab）
     *
     * @param list<array{id?:int,feature_code?:string,record_label?:string,disclaimer_text?:string,consent_text?:string}> $items
     */
    public function saveCopies(array $items): bool
    {
        if (empty($items)) {
            $this->utils->errorThrow('无保存内容');
        }
        $now = time();
        foreach ($items as $item) {
            if (!is_array($item)) {
                continue;
            }
            $id = (int) ($item['id'] ?? 0);
            $code = trim((string) ($item['feature_code'] ?? ''));
            $row = null;
            if ($id > 0) {
                $row = AiFeatureCopyModel::where('id', $id)->where('deleted_at', 0)->first();
            }
            if (!$row && $code !== '') {
                $row = AiFeatureCopyModel::where('feature_code', $code)->where('deleted_at', 0)->first();
            }
            if (!$row) {
                continue;
            }
            if (array_key_exists('record_label', $item)) {
                $row->record_label = trim((string) $item['record_label']);
            }
            if (array_key_exists('disclaimer_text', $item)) {
                $row->disclaimer_text = (string) $item['disclaimer_text'];
            }
            if (array_key_exists('consent_text', $item)) {
                $row->consent_text = (string) $item['consent_text'];
            }
            $row->updated_at = $now;
            $row->save();
        }
        return true;
    }

    /**
     * 按功能码取文案；不存在则回落内置默认
     */
    public function getCopyByFeature(string $featureCode): array
    {
        $featureCode = trim($featureCode);
        if ($featureCode === '') {
            $this->utils->errorThrow('功能码不能为空');
        }
        $row = AiFeatureCopyModel::where('feature_code', $featureCode)
            ->where('deleted_at', 0)
            ->where('status', 1)
            ->first();
        if ($row) {
            return [
                'id' => (int) $row->id,
                'feature_code' => (string) $row->feature_code,
                'record_label' => (string) ($row->record_label ?: $this->defaultRecordLabel($featureCode)),
                'disclaimer_text' => (string) ($row->disclaimer_text ?: $this->defaultDisclaimer($featureCode)),
                'consent_text' => (string) ($row->consent_text ?: $this->defaultConsent()),
            ];
        }
        return [
            'id' => 0,
            'feature_code' => $featureCode,
            'record_label' => $this->defaultRecordLabel($featureCode),
            'disclaimer_text' => $this->defaultDisclaimer($featureCode),
            'consent_text' => $this->defaultConsent(),
        ];
    }

    /**
     * 门闸：文案 + 是否已签署（按医生+功能码）
     */
    public function getGate(string $featureCode, int $doctorId): array
    {
        if ($doctorId <= 0) {
            $this->utils->errorThrow('无法识别医生身份');
        }
        $copy = $this->getCopyByFeature($featureCode);
        $consented = AiDoctorConsentModel::where('doctor_id', $doctorId)
            ->where('feature_code', $featureCode)
            ->where('deleted_at', 0)
            ->exists();
        return array_merge($copy, [
            'consented' => $consented,
        ]);
    }

    /**
     * 医生签署知情同意（同一功能幂等）
     */
    public function agree(string $featureCode, int $doctorId, int $storeId = 0): array
    {
        if ($doctorId <= 0) {
            $this->utils->errorThrow('无法识别医生身份');
        }
        $featureCode = trim($featureCode);
        if ($featureCode === '') {
            $this->utils->errorThrow('功能码不能为空');
        }
        $copy = $this->getCopyByFeature($featureCode);
        $exists = AiDoctorConsentModel::where('doctor_id', $doctorId)
            ->where('feature_code', $featureCode)
            ->where('deleted_at', 0)
            ->first();
        if ($exists) {
            return [
                'consented' => true,
                'feature_code' => $featureCode,
                'already' => true,
            ];
        }
        $now = time();
        AiDoctorConsentModel::query()->insert([
            'doctor_id' => $doctorId,
            'feature_code' => $featureCode,
            'copy_id' => (int) ($copy['id'] ?? 0),
            'store_id' => $storeId,
            'created_at' => $now,
            'updated_at' => 0,
            'deleted_at' => 0,
        ]);
        return [
            'consented' => true,
            'feature_code' => $featureCode,
            'already' => false,
        ];
    }

    private function defaultRecordLabel(string $featureCode): string
    {
        return $featureCode === self::FEATURE_RX ? '处方' : '病历';
    }

    private function defaultDisclaimer(string $featureCode): string
    {
        $label = $this->defaultRecordLabel($featureCode);
        return '本' . $label . '由 AI 根据问诊/语音转写内容辅助生成，仅供起草参考。'
            . "\nAI 可能存在漏记、误读或“幻觉”，不能替代医师专业判断。"
            . "\n诊断、处置、用药、知情告知等关键内容须由你逐条核对、修改后确认。";
    }

    private function defaultConsent(): string
    {
        return "我已知悉：\n"
            . "1. 本平台 AI 仅用于病历起草、信息归纳、术语规范化；\n"
            . "2. 不得用于自动诊断、自动开嘱、自动出报告；\n"
            . "3. 所有 AI 输出须由具备资质的医师审核、修改、电子签名；\n"
            . "4. 因未审核直接使用 AI 内容导致的医疗差错，由操作医师及医疗机构承担责任。";
    }
}