<?php

namespace app\api\controller;

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

/**
 * 首页聚合接口
 *
 * 一次请求返回首页全部数据，减少端上串行请求，保证首屏流畅。
 */
class Home extends Api
{
    protected $noNeedLogin = [];
    protected $noNeedRight = '*';

    public function index()
    {
        $userId = $this->auth->id;
        $today = date('Y-m-d');
        $hour = (int)date('H');
        if ($hour < 6) {
            $greeting = '夜深了';
        } elseif ($hour < 11) {
            $greeting = '早上好';
        } elseif ($hour < 14) {
            $greeting = '中午好';
        } elseif ($hour < 18) {
            $greeting = '下午好';
        } else {
            $greeting = '晚上好';
        }

        $cycle = CycleService::current($userId);
        $loggedToday = Db::name('cycle_log')
                ->where('user_id', $userId)
                ->where('log_date', $today)
                ->whereNull('deletetime')
                ->count() > 0;

        $this->success('', [
            'greeting'     => $greeting,
            'nickname'     => $this->auth->nickname ?: '亲爱的',
            'today'        => $today,
            'date_text'    => date('n月j日') . '　' . $this->weekText($today),
            'cycle'        => $cycle,
            'logged_today' => $loggedToday,
            'phase_tip'    => $this->phaseTip($cycle),
            'jijing'       => $this->pickJijing($cycle['phase'], $today),
            'reminders'    => $this->reminders($cycle, $loggedToday),
            'mood'         => $this->moodSummary($userId),
            'member'       => MemberService::status($userId),
        ]);
    }

    /**
     * 按阶段/日期稳定挑选一条心语（同一天结果不变）
     */
    protected function pickJijing($phase, $today)
    {
        $pool = Db::name('content')
            ->where('type', 'jijing')
            ->where('status', 'normal')
            ->where('verify', 'passed')
            ->order('weigh', 'desc')
            ->select();

        if (!$pool) {
            return null;
        }

        $matched = [];
        foreach ($pool as $item) {
            $phases = array_filter(explode(',', $item['phase']));
            if (!$phase || in_array('all', $phases) || in_array($phase, $phases)) {
                $matched[] = $item;
            }
        }
        if (!$matched) {
            $matched = $pool;
        }

        $index = crc32($today . ($phase ?: 'all')) % count($matched);
        $item = $matched[$index];

        return [
            'id'      => (int)$item['id'],
            'title'   => $item['title'],
            'summary' => $item['summary'],
            'body'    => $item['body'],
            'emoji'   => $item['cover_emoji'],
            'access'  => $item['access'],
        ];
    }

    /**
     * 阶段建议文案
     */
    protected function phaseTip($cycle)
    {
        if (!$cycle['has_data']) {
            return [
                'title' => '先记录一次经期',
                'desc'  => '记录后即可获得阶段预测与个性化建议',
                'action' => '去记录',
            ];
        }
        $map = [
            'menstrual'  => ['keyword' => '这几天适合放慢节奏', 'desc' => '注意保暖、补铁，减少高强度运动'],
            'follicular' => ['keyword' => '能量回升期', 'desc' => '精力与情绪较好，适合安排计划与运动'],
            'ovulation'  => ['keyword' => '易孕期', 'desc' => '宫颈黏液变清亮，注意私处清洁与补水'],
            'luteal'     => ['keyword' => '黄体期', 'desc' => '情绪易波动，优先睡眠与温热饮食'],
        ];
        $tip = $map[$cycle['phase']] ?: $map['follicular'];
        return [
            'title'  => $tip['keyword'],
            'desc'   => $tip['desc'],
            'action' => '',
        ];
    }

    /**
     * 今日提醒（由周期与记录状态推导，非冗余推送）
     */
    protected function reminders($cycle, $loggedToday)
    {
        $list = [];
        if (!$loggedToday) {
            $list[] = [
                'type'  => 'record',
                'icon'  => '✍️',
                'title' => '今天还没有记录',
                'desc'  => '花 10 秒记录身体感受，预测会更准',
            ];
        }
        if ($cycle['has_data']) {
            if ($cycle['is_period']) {
                $list[] = [
                    'type'  => 'care',
                    'icon'  => '🌡',
                    'title' => '经期第 ' . $cycle['day'] . ' 天',
                    'desc'  => '小腹保暖 + 温热饮食，避免冰饮',
                ];
            } elseif ($cycle['is_fertile']) {
                $list[] = [
                    'type'  => 'fertile',
                    'icon'  => '🌱',
                    'title' => '易孕期',
                    'desc'  => '排卵期前后，注意休息与营养',
                ];
            } elseif ($cycle['days_to_next'] !== null && $cycle['days_to_next'] <= 3 && $cycle['days_to_next'] >= 1) {
                $list[] = [
                    'type'  => 'period',
                    'icon'  => '📅',
                    'title' => '经期还有 ' . $cycle['days_to_next'] . ' 天',
                    'desc'  => '可以提前准备卫生用品与暖贴',
                ];
            } elseif ($cycle['phase'] === 'luteal') {
                $list[] = [
                    'type'  => 'mood',
                    'icon'  => '🍂',
                    'title' => '黄体期留意情绪',
                    'desc'  => '敏感易累是生理性的，允许自己慢一点',
                ];
            }
        }
        // 自定义提醒（吃药 / 记录 / 复诊等）
        $custom = Db::name('reminder')
            ->where('user_id', $this->auth->id)
            ->where('enabled', 1)
            ->whereNull('deletetime')
            ->order('remind_time', 'asc')
            ->select();
        $today = date('Y-m-d');
        foreach ($custom as $item) {
            if ($item['repeat_rule'] === 'once' && $item['remind_date'] !== $today) {
                continue;
            }
            $list[] = [
                'type'  => $item['type'] ?: 'custom',
                'icon'  => '⏰',
                'title' => $item['title'],
                'desc'  => substr($item['remind_time'], 0, 5) . ' 提醒',
            ];
        }

        return $list;
    }

    /**
     * 近 7 天情绪概览
     */
    protected function moodSummary($userId)
    {
        $start = date('Y-m-d', strtotime('-6 day'));
        $logs = Db::name('mood_log')
            ->where('user_id', $userId)
            ->whereNull('deletetime')
            ->where('log_date', '>=', $start)
            ->order('log_date', 'asc')
            ->select();

        $scoreMap = ['happy' => 5, 'calm' => 4, 'low' => 2, 'anxious' => 2, 'angry' => 1];
        $days = [];
        for ($i = 6; $i >= 0; $i--) {
            $d = date('Y-m-d', strtotime('-' . $i . ' day'));
            $days[$d] = ['date' => $d, 'score' => null, 'mood' => ''];
        }
        foreach ($logs as $log) {
            if (isset($days[$log['log_date']])) {
                $days[$log['log_date']]['score'] = isset($scoreMap[$log['mood']]) ? $scoreMap[$log['mood']] : 3;
                $days[$log['log_date']]['mood'] = $log['mood'];
            }
        }

        $recorded = array_values(array_filter($days, function ($d) {
            return $d['score'] !== null;
        }));
        $avg = $recorded ? round(array_sum(array_column($recorded, 'score')) / count($recorded), 1) : 0;

        return [
            'days'        => array_values($days),
            'recorded'    => count($recorded),
            'avg_score'   => $avg,
            'today_mood'  => isset($days[date('Y-m-d')]) ? $days[date('Y-m-d')]['mood'] : '',
        ];
    }

    protected function weekText($date)
    {
        $weeks = ['日', '一', '二', '三', '四', '五', '六'];
        return '星期' . $weeks[(int)date('w', strtotime($date))];
    }
}