<?php

namespace app\api\controller;

use app\common\controller\Api;
use app\common\service\AssessmentService;
use app\common\service\ContentService;
use think\Db;

/**
 * 亲子教育接口（M8）
 *
 * 育儿知识库 / 成长记录 / 亲子活动 / 课程 / 共育任务 / 育儿情绪 / 疫苗与儿保
 */
class Parenting extends Api
{
    protected $noNeedLogin = [];
    protected $noNeedRight = '*';

    /**
     * 亲子模块总览
     */
    public function index()
    {
        $userId = $this->auth->id;
        $baby = Db::name('baby')->where('user_id', $userId)->where('status', 'normal')->order('id', 'desc')->find();
        $monthAge = $baby ? $this->monthAge($baby) : null;

        $this->success('', [
            'baby'       => $this->formatBaby($baby),
            'month_age'  => $monthAge,
            'activities' => ContentService::lists($userId, ['type' => 'activity', 'limit' => 6])['list'],
            'courses'    => ['list' => $this->coursesData()],
            'co_tasks'   => $this->coTasksData(),
            'emotions'   => ContentService::lists($userId, ['type' => 'emotion', 'limit' => 4])['list'],
            'vaccines'   => $this->vaccinePlan($baby),
            'growth'     => $this->growthListData($baby),
            'assessments' => AssessmentService::lists('parenting', $userId),
        ]);
    }

    /**
     * 宝宝档案
     */
    public function babyInfo()
    {
        $baby = Db::name('baby')->where('user_id', $this->auth->id)->where('status', 'normal')->order('id', 'desc')->find();
        $this->success('', ['baby' => $this->formatBaby($baby), 'month_age' => $baby ? $this->monthAge($baby) : null]);
    }

    public function babySave()
    {
        $userId = $this->auth->id;
        $data = [
            'user_id'  => $userId,
            'nickname' => mb_substr((string)$this->request->post('nickname', '宝宝'), 0, 30),
            'gender'   => min(2, max(0, (int)$this->request->post('gender', 0))),
            'status'   => 'normal',
        ];
        $birthday = (string)$this->request->post('birthday', '');
        $dueDate = (string)$this->request->post('due_date', '');
        if ($birthday && strtotime($birthday)) {
            $data['birthday'] = date('Y-m-d', strtotime($birthday));
        }
        if ($dueDate && strtotime($dueDate)) {
            $data['due_date'] = date('Y-m-d', strtotime($dueDate));
        }

        $exist = Db::name('baby')->where('user_id', $userId)->where('status', 'normal')->find();
        if ($exist) {
            Db::name('baby')->where('id', $exist['id'])->update($data);
            $id = $exist['id'];
        } else {
            $data['createtime'] = time();
            $id = Db::name('baby')->insertGetId($data);
        }

        $baby = Db::name('baby')->where('id', $id)->find();
        $this->success('已保存', ['baby' => $this->formatBaby($baby), 'month_age' => $this->monthAge($baby)]);
    }

    /**
     * 成长记录
     */
    protected function growthListData($baby = null)
    {
        if (!$baby) {
            $baby = Db::name('baby')->where('user_id', $this->auth->id)->where('status', 'normal')->order('id', 'desc')->find();
        }
        if (!$baby) {
            return [];
        }
        $rows = Db::name('growth_record')
            ->where('baby_id', $baby['id'])
            ->order('record_date', 'desc')
            ->limit(30)
            ->select();

        return array_map(function ($row) {
            return [
                'id'          => (int)$row['id'],
                'record_date' => $row['record_date'],
                'height'      => $row['height'] !== null ? (float)$row['height'] : null,
                'weight'      => $row['weight'] !== null ? (float)$row['weight'] : null,
                'milestone'   => $row['milestone'],
                'note'        => $row['note'],
            ];
        }, $rows);
    }

    public function growthSave()
    {
        $userId = $this->auth->id;
        $baby = Db::name('baby')->where('user_id', $userId)->where('status', 'normal')->order('id', 'desc')->find();
        if (!$baby) {
            $this->error('请先创建宝宝档案');
        }
        $date = (string)$this->request->post('record_date', date('Y-m-d'));
        if (!strtotime($date)) {
            $this->error('日期格式不正确');
        }
        $height = $this->request->post('height', '');
        $weight = $this->request->post('weight', '');

        Db::name('growth_record')->insert([
            'user_id'     => $userId,
            'baby_id'     => $baby['id'],
            'record_date' => $date,
            'height'      => is_numeric($height) ? round((float)$height, 1) : null,
            'weight'      => is_numeric($weight) ? round((float)$weight, 2) : null,
            'milestone'   => mb_substr((string)$this->request->post('milestone', ''), 0, 100),
            'note'        => mb_substr((string)$this->request->post('note', ''), 0, 300),
            'createtime'  => time(),
        ]);

        $this->success('已记录', ['list' => $this->growthListData($baby)]);
    }

    /**
     * 亲子活动（按月龄匹配）
     */
    public function activities()
    {
        $userId = $this->auth->id;
        $baby = Db::name('baby')->where('user_id', $userId)->where('status', 'normal')->order('id', 'desc')->find();
        $monthAge = $baby ? $this->monthAge($baby) : null;

        $data = ContentService::lists($userId, ['type' => 'activity', 'limit' => 30]);
        if ($monthAge !== null) {
            $matched = array_values(array_filter($data['list'], function ($item) use ($monthAge) {
                $extra = $item['extra'] ?: [];
                $from = isset($extra['month_from']) ? (int)$extra['month_from'] : 0;
                $to = isset($extra['month_to']) ? (int)$extra['month_to'] : 999;
                return $monthAge >= $from && $monthAge <= $to;
            }));
            if ($matched) {
                $data['list'] = $matched;
            }
            $data['matched_by_age'] = count($matched) > 0;
        }
        $data['month_age'] = $monthAge;
        $this->success('', $data);
    }

    /**
     * 课程
     */
    public function courses()
    {
        $list = $this->coursesData();
        $this->success('', ['list' => $list, 'total' => count($list)]);
    }

    protected function coursesData()
    {
        $data = ContentService::lists($this->auth->id, ['type' => 'course', 'part' => 'parenting', 'limit' => 30]);
        return $data['list'];
    }

    /**
     * 共育任务
     */
    public function coTasks()
    {
        $this->success('', ['list' => $this->coTasksData()]);
    }

    protected function coTasksData()
    {
        $rows = Db::name('task')
            ->where('user_id', $this->auth->id)
            ->where('scope', 'parenting')
            ->whereNull('deletetime')
            ->order('done asc, id desc')
            ->select();
        return array_map(function ($row) {
            return [
                'id'        => (int)$row['id'],
                'title'     => $row['title'],
                'category'  => $row['category'],
                'done'      => (int)$row['done'],
                'share_partner' => (int)$row['share_partner'],
            ];
        }, $rows);
    }

    public function coTaskSave()
    {
        $userId = $this->auth->id;
        $title = mb_substr(trim((string)$this->request->post('title', '')), 0, 80);
        if (!$title) {
            $this->error('请填写任务内容');
        }
        $id = Db::name('task')->insertGetId([
            'user_id'       => $userId,
            'scope'         => 'parenting',
            'title'         => $title,
            'category'      => $this->request->post('category', 'care'),
            'share_partner' => 1,
            'createtime'    => time(),
            'updatetime'    => time(),
        ]);
        $this->success('已添加', ['id' => (int)$id, 'list' => $this->coTasksData()]);
    }

    public function coTaskDone()
    {
        $id = (int)$this->request->post('id', 0);
        $row = Db::name('task')
            ->where('id', $id)
            ->where('user_id', $this->auth->id)
            ->where('scope', 'parenting')
            ->find();
        if (!$row) {
            $this->error('任务不存在');
        }
        $done = $row['done'] ? 0 : 1;
        Db::name('task')->where('id', $id)->update([
            'done' => $done, 'done_time' => $done ? time() : null, 'updatetime' => time(),
        ]);
        $this->success($done ? '已完成' : '已取消', ['done' => $done, 'list' => $this->coTasksData()]);
    }

    /**
     * 育儿情绪
     */
    public function emotions()
    {
        $this->success('', ContentService::lists($this->auth->id, ['type' => 'emotion', 'limit' => 30]));
    }

    /**
     * 疫苗与儿保计划（按宝宝生日推算）
     */
    public function vaccines()
    {
        $baby = Db::name('baby')->where('user_id', $this->auth->id)->where('status', 'normal')->order('id', 'desc')->find();
        $this->success('', ['list' => $this->vaccinePlan($baby), 'baby' => $this->formatBaby($baby)]);
    }

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

    protected function formatBaby($baby)
    {
        if (!$baby) {
            return null;
        }
        return [
            'id'       => (int)$baby['id'],
            'nickname' => $baby['nickname'],
            'gender'   => (int)$baby['gender'],
            'birthday' => $baby['birthday'],
            'due_date' => $baby['due_date'],
            'is_pregnant' => empty($baby['birthday']) && !empty($baby['due_date']),
        ];
    }

    /**
     * 月龄（孕期返回负数：距离预产期天数用于展示）
     */
    protected function monthAge($baby)
    {
        if (!$baby) {
            return null;
        }
        if (!empty($baby['birthday'])) {
            $birth = strtotime($baby['birthday']);
            $now = strtotime(date('Y-m-d'));
            if ($now < $birth) {
                return 0;
            }
            return (int)floor(($now - $birth) / (30.44 * 86400));
        }
        if (!empty($baby['due_date'])) {
            $days = (int)ceil((strtotime($baby['due_date']) - strtotime(date('Y-m-d'))) / 86400);
            return -max(1, $days);
        }
        return null;
    }

    protected function vaccinePlan($baby)
    {
        $list = Db::name('vaccine')->order('weigh', 'desc')->select();
        $birthday = $baby && !empty($baby['birthday']) ? strtotime($baby['birthday']) : null;
        $today = strtotime(date('Y-m-d'));

        $result = [];
        foreach ($list as $item) {
            $dueDate = $birthday ? date('Y-m-d', strtotime('+' . (int)$item['month_from'] . ' month', $birthday)) : null;
            $days = $dueDate ? (int)ceil((strtotime($dueDate) - $today) / 86400) : null;
            $result[] = [
                'id'        => (int)$item['id'],
                'name'      => $item['name'],
                'type'      => $item['type'],
                'month_from' => (int)$item['month_from'],
                'note'      => $item['note'],
                'due_date'  => $dueDate,
                'days_left' => $days,
                'status'    => $days === null ? 'unknown' : ($days < 0 ? 'overdue' : ($days <= 30 ? 'upcoming' : 'later')),
            ];
        }
        return $result;
    }
}