<?php

namespace app\api\controller;

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

/**
 * 内容接口（M2 心语/科普 + M5 健康建议 + 冥想音频）
 */
class Content extends Api
{
    protected $noNeedLogin = [];
    protected $noNeedRight = '*';

    /**
     * 内容列表
     * GET type=jijing|mood|knowledge|advice|meditation  phase=menstrual  access=free
     */
    public function index()
    {
        $type = $this->request->param('type', '');
        $phase = $this->request->param('phase', '');
        $categoryId = (int)$this->request->param('category_id', 0);
        $page = max(1, (int)$this->request->param('page', 1));
        $limit = min(50, max(1, (int)$this->request->param('limit', 10)));

        // 未显式传阶段时，按当前周期阶段智能匹配
        if (!$phase) {
            $current = CycleService::current($this->auth->id);
            $phase = $current['phase'] ?: '';
        }

        $query = Db::name('content')
            ->where('status', 'normal')
            ->where('verify', 'passed');

        if ($type) {
            $query->where('type', $type);
        }
        if ($categoryId) {
            $query->where('category_id', $categoryId);
        }

        $all = $query->order('weigh', 'desc')->select();

        // 阶段匹配优先：先取命中当前阶段（含 all）的内容，过少时回退全量，
        // 避免某些阶段（如排卵期）内容过少导致列表空置
        if ($phase) {
            $matched = array_values(array_filter($all, function ($item) use ($phase) {
                $phases = array_filter(explode(',', $item['phase']));
                return in_array('all', $phases) || in_array($phase, $phases);
            }));
            if (count($matched) >= 3 || count($matched) === count($all)) {
                $all = $matched;
            } else {
                $rest = array_values(array_filter($all, function ($item) use ($matched) {
                    return !in_array($item['id'], array_column($matched, 'id'));
                }));
                $all = array_merge($matched, $rest);
            }
        }

        $total = count($all);
        $list = array_slice($all, ($page - 1) * $limit, $limit);

        $member = MemberService::status($this->auth->id);
        $list = array_map(function ($item) use ($member) {
            return [
                'id'       => (int)$item['id'],
                'type'     => $item['type'],
                'title'    => $item['title'],
                'summary'  => $item['summary'],
                'emoji'    => $item['cover_emoji'],
                'media_type' => $item['media_type'],
                'duration' => (int)$item['duration'],
                'duration_text' => $item['duration'] ? floor($item['duration'] / 60) . ' 分钟' : '',
                'access'   => $item['access'],
                'locked'   => $item['access'] === 'member' && !$member['is_member'],
            ];
        }, $list);

        $this->success('', [
            'list'     => $list,
            'total'    => $total,
            'page'     => $page,
            'limit'    => $limit,
            'has_more' => $page * $limit < $total,
            'phase'    => $phase,
            'category' => $this->categoryList($type),
        ]);
    }

    /**
     * 内容详情
     * GET id=1
     */
    public function detail()
    {
        $id = (int)$this->request->param('id', 0);
        $item = Db::name('content')->where('id', $id)->where('status', 'normal')->find();
        if (!$item) {
            $this->error('内容不存在');
        }

        $member = MemberService::status($this->auth->id);
        $locked = $item['access'] === 'member' && !$member['is_member'];

        $this->success('', [
            'id'      => (int)$item['id'],
            'type'    => $item['type'],
            'title'   => $item['title'],
            'summary' => $item['summary'],
            'body'    => $locked ? mb_substr($item['body'], 0, 80) . '…' : $item['body'],
            'emoji'   => $item['cover_emoji'],
            'media_type' => $item['media_type'],
            'duration' => (int)$item['duration'],
            'access'  => $item['access'],
            'locked'  => $locked,
            'lock_tip' => $locked ? '该内容为会员专享，开通会员即可查看' : '',
            'disclaimer' => $item['type'] === 'advice' || $item['type'] === 'knowledge'
                ? '以上内容仅供参考，不能替代医疗诊断。' : '',
        ]);
    }

    /**
     * 分类
     */
    public function categories()
    {
        $type = $this->request->param('type', '');
        $query = Db::name('content_category')->where('status', 'normal');
        if ($type) {
            $query->where('type', $type);
        }
        $list = $query->order('weigh', 'desc')->select();
        $this->success('', ['list' => $list]);
    }

    protected function categoryList($type)
    {
        if (!$type) {
            return [];
        }
        $list = Db::name('content_category')
            ->where('type', $type)
            ->where('status', 'normal')
            ->order('weigh', 'desc')
            ->field('id,name')
            ->select();
        return $list;
    }
}