<?php

namespace app\api\controller;

use app\common\controller\Api;
use think\Db;
use think\Validate;

/**
 * 情绪疗愈接口（M2）
 */
class Mood extends Api
{
    protected $noNeedLogin = [];
    protected $noNeedRight = '*';

    /** 情绪枚举 */
    public static $moods = [
        'happy'   => ['text' => '开心', 'emoji' => '☀️', 'score' => 5, 'color' => '#F5A65B'],
        'calm'    => ['text' => '平静', 'emoji' => '🌤', 'score' => 4, 'color' => '#9BC1A6'],
        'anxious' => ['text' => '焦虑', 'emoji' => '🌪', 'score' => 2, 'color' => '#E8A87C'],
        'low'     => ['text' => '低落', 'emoji' => '🌧', 'score' => 2, 'color' => '#8FA6C4'],
        'angry'   => ['text' => '烦躁', 'emoji' => '⚡', 'score' => 1, 'color' => '#E8604C'],
    ];

    /**
     * 记录情绪（一天可多条）
     * POST log_date, mood, intensity, triggers, content
     */
    public function save()
    {
        $userId = $this->auth->id;
        $mood = (string)$this->request->post('mood', '');
        if (!isset(self::$moods[$mood])) {
            $this->error('请选择情绪');
        }
        $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');
        }

        $content = mb_substr((string)$this->request->post('content', ''), 0, 1000);
        $id = Db::name('mood_log')->insertGetId([
            'user_id'    => $userId,
            'log_date'   => $logDate,
            'mood'       => $mood,
            'intensity'  => min(5, max(1, (int)$this->request->post('intensity', 3))),
            'triggers'   => mb_substr((string)$this->request->post('triggers', ''), 0, 255),
            'content'    => $content,
            'createtime' => time(),
            'updatetime' => time(),
        ]);

        $this->success('已记录', [
            'id'   => (int)$id,
            'mood' => self::$moods[$mood],
        ]);
    }

    /**
     * 情绪急救包（M2）
     * 返回 4 个即时可用的安抚工具，按当前情绪排序
     */
    public function firstaid()
    {
        $data = \app\common\service\ContentService::lists($this->auth->id, [
            'type'  => 'firstaid',
            'limit' => 10,
        ]);

        // 按当前情绪优先排序（若今日有记录）
        $today = Db::name('mood_log')
            ->where('user_id', $this->auth->id)
            ->where('log_date', date('Y-m-d'))
            ->order('id', 'desc')
            ->find();
        $mood = $today ? $today['mood'] : '';
        if ($mood) {
            usort($data['list'], function ($a, $b) use ($mood) {
                $aHit = strpos((string)$a['summary'] . (string)$a['title'], $mood) !== false ? 1 : 0;
                $bHit = strpos((string)$b['summary'] . (string)$b['title'], $mood) !== false ? 1 : 0;
                return $bHit - $aHit;
            });
        }

        $this->success('', [
            'list'       => $data['list'],
            'today_mood' => $mood,
            'tip'        => '情绪上头时，先照顾身体，再处理问题',
            'hotline'    => ['name' => '心理援助热线', 'phone' => '12356'],
        ]);
    }

    /**
     * 情绪列表
     * GET limit=20 month=2026-11
     */
    public function index()
    {
        $userId = $this->auth->id;
        $limit = min(100, max(1, (int)$this->request->param('limit', 20)));
        $month = $this->request->param('month', '');

        $query = Db::name('mood_log')
            ->where('user_id', $userId)
            ->whereNull('deletetime');

        if ($month && Validate::regex($month, '/^\d{4}-\d{2}$/')) {
            $query->whereBetween('log_date', [$month . '-01', date('Y-m-t', strtotime($month . '-01'))]);
        }

        $list = $query->order('log_date', 'desc')->order('id', 'desc')->limit($limit)->select();
        $list = array_map([$this, 'format'], $list);

        $this->success('', ['list' => $list, 'moods' => $this->moodOptions()]);
    }

    /**
     * 情绪趋势
     * GET days=7|30
     */
    public function trend()
    {
        $userId = $this->auth->id;
        $days = (int)$this->request->param('days', 7);
        $days = in_array($days, [7, 14, 30]) ? $days : 7;

        $start = date('Y-m-d', strtotime('-' . ($days - 1) . ' day'));
        $logs = Db::name('mood_log')
            ->where('user_id', $userId)
            ->whereNull('deletetime')
            ->where('log_date', '>=', $start)
            ->order('log_date', 'asc')
            ->select();

        $bucket = [];
        for ($i = $days - 1; $i >= 0; $i--) {
            $d = date('Y-m-d', strtotime('-' . $i . ' day'));
            $bucket[$d] = ['date' => $d, 'label' => date('n/j', strtotime($d)), 'score' => null, 'count' => 0, 'mood' => ''];
        }

        foreach ($logs as $log) {
            if (!isset($bucket[$log['log_date']])) {
                continue;
            }
            $score = self::$moods[$log['mood']]['score'] ?? 3;
            $item = &$bucket[$log['log_date']];
            $item['count']++;
            $item['score'] = $item['score'] === null ? $score : round(($item['score'] * ($item['count'] - 1) + $score) / $item['count'], 1);
            $item['mood'] = $log['mood'];
            unset($item);
        }

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

        // 主情绪统计
        $count = [];
        foreach ($logs as $log) {
            $count[$log['mood']] = isset($count[$log['mood']]) ? $count[$log['mood']] + 1 : 1;
        }
        arsort($count);
        $topMood = key($count) ?: '';

        $this->success('', [
            'days'      => $days,
            'list'      => array_values($bucket),
            'recorded'  => count($recorded),
            'avg_score' => $avg,
            'top_mood'  => $topMood ? array_merge(['key' => $topMood], self::$moods[$topMood]) : null,
            'moods'     => $this->moodOptions(),
        ]);
    }

    /**
     * 删除一条情绪记录
     */
    public function remove()
    {
        $id = (int)$this->request->post('id', 0);
        $row = Db::name('mood_log')->where('id', $id)->where('user_id', $this->auth->id)->find();
        if (!$row) {
            $this->error('记录不存在');
        }
        Db::name('mood_log')->where('id', $id)->update(['deletetime' => time()]);
        $this->success('已删除');
    }

    protected function moodOptions()
    {
        $list = [];
        foreach (self::$moods as $key => $item) {
            $list[] = array_merge(['key' => $key], $item);
        }
        return $list;
    }

    protected function format($log)
    {
        $mood = self::$moods[$log['mood']] ?? ['text' => '', 'emoji' => '', 'score' => 0, 'color' => ''];
        return [
            'id'        => (int)$log['id'],
            'log_date'  => $log['log_date'],
            'date_text' => date('n月j日', strtotime($log['log_date'])),
            'week_text' => '周' . ['日', '一', '二', '三', '四', '五', '六'][(int)date('w', strtotime($log['log_date']))],
            'mood'      => $log['mood'],
            'mood_text' => $mood['text'],
            'emoji'     => $mood['emoji'],
            'color'     => $mood['color'],
            'intensity' => (int)$log['intensity'],
            'triggers'  => $log['triggers'],
            'content'   => $log['content'],
            'time_text' => date('H:i', (int)$log['createtime']),
        ];
    }
}