<?php

namespace app\api\controller;

use app\common\controller\Api;
use app\common\service\ContentService;
use app\common\service\CycleService;
use app\common\service\MemberService;
use fast\Random;
use think\Db;

/**
 * 家人共护接口（M4）
 *
 * 绑定（≤5 人）/ 关怀提醒 / 话术库 / 爱心积分 / 私密沟通空间 / 家庭健康视图
 */
class Family extends Api
{
    protected $noNeedLogin = [];
    protected $noNeedRight = '*';

    /** 最多绑定人数 */
    const MAX_BIND = 5;

    /**
     * 家庭总览
     */
    public function index()
    {
        $userId = $this->auth->id;
        $binds = Db::name('family_bind')
            ->where('user_id', $userId)
            ->where('status', 'normal')
            ->order('id', 'desc')
            ->select();

        $this->success('', [
            'binds'      => array_map([$this, 'formatBind'], $binds),
            'max'        => self::MAX_BIND,
            'can_invite' => count($binds) < self::MAX_BIND,
            'points'     => $this->pointsData($userId),
            'scripts'    => ContentService::lists($userId, ['type' => 'care', 'limit' => 3]),
            'care_today' => $this->careToday($userId),
            'member'     => MemberService::status($userId),
            'script_locked' => !MemberService::can($userId, 'family.script.full'),
        ]);
    }

    /**
     * 生成邀请（二维码/链接）
     * POST relation=partner|parent|friend, member_name
     */
    public function invite()
    {
        $userId = $this->auth->id;
        $count = Db::name('family_bind')
            ->where('user_id', $userId)
            ->whereIn('status', ['pending', 'normal'])
            ->count();
        if ($count >= self::MAX_BIND) {
            $this->error('最多绑定 ' . self::MAX_BIND . ' 位家人');
        }

        $relation = $this->request->post('relation', 'partner');
        if (!in_array($relation, ['partner', 'parent', 'friend'], true)) {
            $relation = 'partner';
        }
        $code = strtoupper(Random::alnum(8));

        $id = Db::name('family_bind')->insertGetId([
            'user_id'     => $userId,
            'member_name' => mb_substr((string)$this->request->post('member_name', ''), 0, 30),
            'relation'    => $relation,
            'scope'       => 'remind,care',
            'invite_code' => $code,
            'status'      => 'pending',
            'createtime'  => time(),
            'updatetime'  => time(),
        ]);

        $this->success('邀请已生成', [
            'id'          => (int)$id,
            'invite_code' => $code,
            'invite_text' => '邀请你成为我花期里的守护者，绑定码：' . $code,
            'expire_days' => 7,
        ]);
    }

    /**
     * 确认绑定（家人端输入邀请码）
     * POST invite_code
     */
    public function confirm()
    {
        $userId = $this->auth->id;
        $code = strtoupper(trim((string)$this->request->post('invite_code', '')));
        if (!$code) {
            $this->error('请输入绑定码');
        }
        $bind = Db::name('family_bind')->where('invite_code', $code)->find();
        if (!$bind) {
            $this->error('绑定码不存在或已失效');
        }
        if ((int)$bind['user_id'] === (int)$userId) {
            $this->error('不能与自己绑定');
        }
        if ($bind['status'] === 'normal') {
            $this->error('该邀请已被使用');
        }
        if ($bind['createtime'] < time() - 7 * 86400) {
            $this->error('绑定码已过期，请让对方重新生成');
        }

        Db::name('family_bind')->where('id', $bind['id'])->update([
            'member_user_id' => $userId,
            'status'         => 'normal',
            'confirm_time'   => time(),
            'updatetime'     => time(),
        ]);

        $this->success('绑定成功', ['bind_id' => (int)$bind['id']]);
    }

    /**
     * 解绑
     */
    public function remove()
    {
        $id = (int)$this->request->post('id', 0);
        $row = Db::name('family_bind')
            ->where('id', $id)
            ->where(function ($query) {
                $query->where('user_id', $this->auth->id)->whereOr('member_user_id', $this->auth->id);
            })
            ->find();
        if (!$row) {
            $this->error('绑定不存在');
        }
        Db::name('family_bind')->where('id', $id)->update(['status' => 'removed', 'updatetime' => time()]);
        $this->success('已解绑，对方将无法再看到你的提醒');
    }

    /**
     * 话术库（暖心话术，完整库为会员权益）
     */
    public function scripts()
    {
        $isMember = MemberService::can($this->auth->id, 'family.script.full');
        $data = ContentService::lists($this->auth->id, ['type' => 'care', 'limit' => $isMember ? 30 : 4]);
        $data['locked'] = !$isMember;
        $data['tip'] = $isMember ? '' : '开通会员可查看完整话术库';
        $this->success('', $data);
    }

    /**
     * 沟通空间：留言列表
     * GET bind_id
     */
    public function messages()
    {
        $bindId = (int)$this->request->param('bind_id', 0);
        $bind = $this->checkBind($bindId);
        $list = Db::name('care_message')
            ->where('bind_id', $bind['id'])
            ->order('id', 'desc')
            ->limit(50)
            ->select();

        $list = array_map(function ($row) {
            return [
                'id'       => (int)$row['id'],
                'type'     => $row['type'],
                'content'  => $row['content'],
                'mine'     => (int)$row['user_id'] === (int)$this->auth->id,
                'time_text' => date('m-d H:i', (int)$row['createtime']),
            ];
        }, $list);

        $this->success('', ['bind' => $this->formatBind($bind), 'list' => array_reverse($list)]);
    }

    /**
     * 沟通空间：发送留言
     */
    public function messageSend()
    {
        $bindId = (int)$this->request->post('bind_id', 0);
        $bind = $this->checkBind($bindId);
        $content = mb_substr(trim((string)$this->request->post('content', '')), 0, 500);
        if (!$content) {
            $this->error('留言不能为空');
        }
        $id = Db::name('care_message')->insertGetId([
            'bind_id'    => $bind['id'],
            'user_id'    => $this->auth->id,
            'type'       => 'text',
            'content'    => $content,
            'createtime' => time(),
        ]);
        $this->success('已发送', ['id' => (int)$id]);
    }

    /**
     * 记录一次关怀行动（每日一次，+2 积分）
     */
    public function careAction()
    {
        $userId = $this->auth->id;
        if ($this->careToday($userId)) {
            $this->success('今天已经记录过关怀啦', ['points' => $this->pointsData($userId)]);
        }
        Db::name('point_log')->insert([
            'user_id'    => $userId,
            'action'     => 'care_daily',
            'point'      => 2,
            'ref_id'     => 0,
            'remark'     => '今日关怀行动',
            'createtime' => time(),
        ]);
        $this->success('+2 爱心积分', ['points' => $this->pointsData($userId)]);
    }

    /**
     * 积分明细
     */
    public function points()
    {
        $userId = $this->auth->id;
        $log = Db::name('point_log')
            ->where('user_id', $userId)
            ->order('id', 'desc')
            ->limit(30)
            ->select();
        $list = array_map(function ($row) {
            return [
                'id'     => (int)$row['id'],
                'action' => $row['action'],
                'point'  => (int)$row['point'],
                'remark' => $row['remark'],
                'date'   => date('Y-m-d H:i', (int)$row['createtime']),
            ];
        }, $log);

        $this->success('', ['points' => $this->pointsData($userId), 'list' => $list]);
    }

    /**
     * 家庭健康视图：谁在看护、当前阶段、共享待办
     */
    public function healthView()
    {
        $userId = $this->auth->id;
        $cycle = CycleService::current($userId);
        $binds = Db::name('family_bind')
            ->where(function ($query) use ($userId) {
                $query->where('user_id', $userId)->whereOr('member_user_id', $userId);
            })
            ->where('status', 'normal')
            ->select();

        $tasks = Db::name('task')
            ->where('user_id', $userId)
            ->where('scope', 'family')
            ->whereNull('deletetime')
            ->where('done', 0)
            ->select();

        $this->success('', [
            'cycle' => [
                'has_data'    => $cycle['has_data'],
                'phase_text'  => $cycle['phase_text'],
                'day'         => $cycle['day'],
                'next_start'  => $cycle['next_start'],
                'days_to_next' => $cycle['days_to_next'],
            ],
            'caregivers' => array_map([$this, 'formatBind'], $binds),
            'tasks'      => array_map(function ($row) {
                return ['id' => (int)$row['id'], 'title' => $row['title'], 'due_date' => $row['due_date']];
            }, $tasks),
            'privacy_note' => '家人仅可见阶段与提醒，看不到你的原始症状与情绪日记',
        ]);
    }

    // ---------------- 内部方法 ----------------

    protected function checkBind($bindId)
    {
        $userId = $this->auth->id;
        $bind = Db::name('family_bind')
            ->where('id', $bindId)
            ->where('status', 'normal')
            ->where(function ($query) use ($userId) {
                $query->where('user_id', $userId)->whereOr('member_user_id', $userId);
            })
            ->find();
        if (!$bind) {
            $this->error('绑定关系不存在或已解除');
        }
        return $bind;
    }

    protected function formatBind($row)
    {
        $relationText = ['partner' => '伴侣', 'parent' => '父母', 'friend' => '朋友'];
        return [
            'id'            => (int)$row['id'],
            'name'          => $row['member_name'] ?: '待确认',
            'relation'      => $row['relation'],
            'relation_text' => isset($relationText[$row['relation']]) ? $relationText[$row['relation']] : '家人',
            'scope'         => $row['scope'],
            'status'        => $row['status'],
            'invite_code'   => $row['status'] === 'pending' ? $row['invite_code'] : '',
            'confirmed'     => $row['status'] === 'normal',
        ];
    }

    protected function pointsData($userId)
    {
        $total = (int)Db::name('point_log')->where('user_id', $userId)->sum('point');
        $todayStart = strtotime(date('Y-m-d'));
        $today = (int)Db::name('point_log')->where('user_id', $userId)->where('createtime', '>=', $todayStart)->sum('point');
        return [
            'total'      => $total,
            'today'      => $today,
            'can_earn'   => $this->careToday($userId) ? 0 : 2,
            'rules'      => ['每日关怀行动 +2', '完成备孕任务 +2', '连续陪伴 7 天 +10'],
        ];
    }

    protected function careToday($userId)
    {
        return Db::name('point_log')
            ->where('user_id', $userId)
            ->where('action', 'care_daily')
            ->where('createtime', '>=', strtotime(date('Y-m-d')))
            ->count() > 0;
    }
}