<?php

namespace app\api\controller;

use app\common\controller\Api;
use app\common\service\CycleService;
use app\common\service\MemberService;
use think\Db;
use think\Validate;

/**
 * 周期管理接口（M1）
 */
class Cycle extends Api
{
    protected $noNeedLogin = [];
    protected $noNeedRight = '*';

    /**
     * 月历视图
     * GET month=2026-11
     */
    public function index()
    {
        $month = $this->request->param('month', date('Y-m'));
        if (!Validate::regex($month, '/^\d{4}-\d{2}$/')) {
            $month = date('Y-m');
        }
        $data = CycleService::calendar($this->auth->id, $month);
        $this->success('', $data);
    }

    /**
     * 今日周期状态
     */
    public function current()
    {
        $this->success('', CycleService::current($this->auth->id));
    }

    /**
     * 未来 3 个月预测
     */
    public function predict()
    {
        $this->success('', CycleService::predict($this->auth->id, 3));
    }

    /**
     * 记录 / 修改一次经期
     * POST start_date=2026-11-01 end_date=2026-11-05
     */
    public function save()
    {
        $userId = $this->auth->id;
        $startDate = $this->request->post('start_date', '');
        $endDate = $this->request->post('end_date', '');

        if (!$startDate || !strtotime($startDate)) {
            $this->error('请选择经期开始日期');
        }
        if ($endDate && strtotime($endDate) < strtotime($startDate)) {
            $this->error('结束日期不能早于开始日期');
        }
        if (strtotime($startDate) > time() + 86400) {
            $this->error('开始日期不能晚于今天');
        }

        $periodLength = $endDate ? (int)((strtotime($endDate) - strtotime($startDate)) / 86400) + 1 : 5;
        if ($periodLength > 15) {
            $this->error('经期天数超出合理范围');
        }

        $exist = Db::name('cycle')
            ->where('user_id', $userId)
            ->where('start_date', $startDate)
            ->whereNull('deletetime')
            ->find();

        $params = CycleService::params($userId);
        $data = [
            'user_id'       => $userId,
            'start_date'    => $startDate,
            'end_date'      => $endDate ?: null,
            'period_length' => $periodLength,
            'cycle_length'  => $params['cycle_length'],
            'ovulation_date' => date('Y-m-d', strtotime($startDate) + ($params['cycle_length'] - 14) * 86400),
            'updatetime'    => time(),
        ];

        if ($exist) {
            Db::name('cycle')->where('id', $exist['id'])->update($data);
            $id = $exist['id'];
        } else {
            $data['createtime'] = time();
            $id = Db::name('cycle')->insertGetId($data);
        }

        // 重新计算历史周期的平均长度（新周期写入后再回填）
        $cycles = CycleService::cycles($userId, 6);
        if (count($cycles) >= 2) {
            $days = (int)((strtotime($cycles[0]['start_date']) - strtotime($cycles[1]['start_date'])) / 86400);
            if ($days >= 18 && $days <= 60) {
                Db::name('cycle')->where('id', $cycles[0]['id'])->update(['cycle_length' => $days]);
            }
        }

        $this->success('记录成功', [
            'id'     => (int)$id,
            'cycle'  => CycleService::current($userId),
        ]);
    }

    /**
     * 保存每日症状记录（同日覆盖）
     * POST log_date, flow, pain_level, symptom_ids, mood, sleep_hours, sex, note
     */
    public function log()
    {
        $userId = $this->auth->id;
        $logDate = $this->request->post('log_date', date('Y-m-d'));
        if (!strtotime($logDate)) {
            $this->error('日期格式不正确');
        }
        if (strtotime($logDate) > strtotime('+1 day')) {
            $this->error('不能记录未来日期');
        }

        $data = [
            'user_id'     => $userId,
            'log_date'    => $logDate,
            'flow'        => min(3, max(0, (int)$this->request->post('flow', 0))),
            'pain_level'  => min(5, max(0, (int)$this->request->post('pain_level', 0))),
            'symptom_ids' => (string)$this->request->post('symptom_ids', ''),
            'mood'        => min(2, max(-2, (int)$this->request->post('mood', 0))),
            'sex'         => min(2, max(0, (int)$this->request->post('sex', 0))),
            'note'        => mb_substr((string)$this->request->post('note', ''), 0, 500),
            'updatetime'  => time(),
        ];

        $sleep = $this->request->post('sleep_hours', '');
        if ($sleep !== '' && is_numeric($sleep)) {
            $data['sleep_hours'] = min(24, max(0, round((float)$sleep, 1)));
        }

        $exist = Db::name('cycle_log')
            ->where('user_id', $userId)
            ->where('log_date', $logDate)
            ->whereNull('deletetime')
            ->find();

        if ($exist) {
            Db::name('cycle_log')->where('id', $exist['id'])->update($data);
            $id = $exist['id'];
        } else {
            $data['createtime'] = time();
            $id = Db::name('cycle_log')->insertGetId($data);
        }

        $this->success('已保存', ['id' => (int)$id]);
    }

    /**
     * 某天的记录详情
     * GET date=2026-11-02
     */
    public function loginfo()
    {
        $date = $this->request->param('date', date('Y-m-d'));
        $log = Db::name('cycle_log')
            ->where('user_id', $this->auth->id)
            ->where('log_date', $date)
            ->whereNull('deletetime')
            ->find();

        if ($log) {
            $log['symptom_ids'] = $log['symptom_ids'] === '' ? [] : array_map('intval', explode(',', $log['symptom_ids']));
        }

        $this->success('', [
            'date' => $date,
            'log'  => $log ?: null,
            'tags' => $this->tagsData(),
        ]);
    }

    /**
     * 症状标签（记录面板用）
     */
    public function tags()
    {
        $this->success('', ['list' => $this->tagsData()]);
    }

    protected function tagsData()
    {
        $list = Db::name('symptom_tag')
            ->where('status', 'normal')
            ->where(function ($query) {
                $query->where('is_preset', 1)->whereOr('user_id', $this->auth->id);
            })
            ->order('weigh', 'desc')
            ->select();

        return array_map(function ($item) {
            return [
                'id'    => (int)$item['id'],
                'name'  => $item['name'],
                'icon'  => $item['icon'],
                'category' => $item['category'],
            ];
        }, $list);
    }

    /**
     * 周期汇总
     */
    public function summary()
    {
        $this->success('', CycleService::summary($this->auth->id));
    }

    /**
     * 健康分析报告（基础免费，深度为会员权益）
     * GET type=month|quarter|year  month=2026-11
     */
    public function report()
    {
        $userId = $this->auth->id;
        $type = $this->request->param('type', 'month');
        $month = $this->request->param('month', date('Y-m'));

        $start = date('Y-m-01', strtotime($month . '-01'));
        $end = date('Y-m-t', strtotime($month . '-01'));

        $logs = Db::name('cycle_log')
            ->where('user_id', $userId)
            ->whereNull('deletetime')
            ->whereBetween('log_date', [$start, $end])
            ->select();

        $painList = [];
        $flowList = [];
        $symptomCount = [];
        $sleepTotal = 0;
        $sleepCount = 0;
        foreach ($logs as $log) {
            if ($log['pain_level'] > 0) {
                $painList[] = (int)$log['pain_level'];
            }
            if ($log['flow'] > 0) {
                $flowList[] = (int)$log['flow'];
            }
            foreach (array_filter(explode(',', $log['symptom_ids'])) as $sid) {
                $symptomCount[$sid] = isset($symptomCount[$sid]) ? $symptomCount[$sid] + 1 : 1;
            }
            if ($log['sleep_hours'] !== null && $log['sleep_hours'] > 0) {
                $sleepTotal += (float)$log['sleep_hours'];
                $sleepCount++;
            }
        }

        arsort($symptomCount);
        $topSymptomIds = array_slice(array_keys($symptomCount), 0, 5);
        $tagNames = Db::name('symptom_tag')->whereIn('id', $topSymptomIds ?: [0])->column('name', 'id');
        $topSymptoms = [];
        foreach ($topSymptomIds as $sid) {
            if (isset($tagNames[$sid])) {
                $topSymptoms[] = ['name' => $tagNames[$sid], 'count' => $symptomCount[$sid]];
            }
        }

        $moodLogs = Db::name('mood_log')
            ->where('user_id', $userId)
            ->whereNull('deletetime')
            ->whereBetween('log_date', [$start, $end])
            ->select();
        $moodCount = [];
        foreach ($moodLogs as $m) {
            $moodCount[$m['mood']] = isset($moodCount[$m['mood']]) ? $moodCount[$m['mood']] + 1 : 1;
        }

        $summary = CycleService::summary($userId);
        $deep = MemberService::can($userId, 'report.deep');

        $this->success('', [
            'type'    => $type,
            'month'   => $month,
            'range'   => [$start, $end],
            'summary' => $summary,
            'stats'   => [
                'log_days'    => count($logs),
                'avg_pain'    => $painList ? round(array_sum($painList) / count($painList), 1) : 0,
                'avg_flow'    => $flowList ? round(array_sum($flowList) / count($flowList), 1) : 0,
                'avg_sleep'   => $sleepCount ? round($sleepTotal / $sleepCount, 1) : 0,
                'top_symptoms' => $topSymptoms,
                'mood_count'  => $moodCount,
                'mood_days'   => count($moodLogs),
            ],
            'access'  => [
                'deep'      => $deep,
                'need_member' => !$deep,
                'tip'       => $deep ? '' : '开通会员可查看深度分析与导出报告',
            ],
            'advice'  => $this->advice($painList, $sleepCount ? $sleepTotal / $sleepCount : 0, $summary),
        ]);
    }

    protected function advice($painList, $avgSleep, $summary)
    {
        $list = [];
        $avgPain = $painList ? array_sum($painList) / count($painList) : 0;
        if ($avgPain >= 3) {
            $list[] = '本期痛经程度偏高，建议热敷并记录是否影响日常活动；若持续加重请及时就医。';
        }
        if ($avgSleep > 0 && $avgSleep < 6.5) {
            $list[] = '本期平均睡眠 ' . round($avgSleep, 1) . ' 小时，偏少。优先固定起床时间并减少睡前屏幕。';
        }
        if ($summary['regularity'] > 0 && $summary['regularity'] < 70) {
            $list[] = '周期波动略大，建议连续记录 3 个周期后再评估；压力与作息是常见影响因素。';
        }
        if (!$list) {
            $list[] = '本期整体状态平稳，保持规律记录会让预测更准确。';
        }
        $list[] = '以上内容仅供参考，不能替代医疗诊断。';
        return $list;
    }

    /**
     * 删除某次经期记录（软删除）
     */
    public function remove()
    {
        $id = (int)$this->request->post('id', 0);
        $row = Db::name('cycle')->where('id', $id)->where('user_id', $this->auth->id)->find();
        if (!$row) {
            $this->error('记录不存在');
        }
        Db::name('cycle')->where('id', $id)->update(['deletetime' => time()]);
        $this->success('已删除');
    }
}