<?php
namespace Spider\Lib;
use Dever;
set_time_limit(0);
class Api
{
	private $queue;
	public function add_api($id)
	{
		# 写入队列
		if (is_array($id)) {
			$config = $id;
		} else {
			$config = Dever::load('spider/lib/project')->get($id);
		}
		
		if (!$config) {
			Dever::alert('项目不存在');
		}
		if ($config['status'] <= 2) {
			Dever::load('spider/lib/project')->set($config, 3);
			Dever::load('spider/lib/queue')->push($config['id']);
		}
		return 'reload';
	}

	public function test_api($id)
	{
		Dever::setInput('test', 1);
		$this->run($id);
		return 'reload';
	}

	# 守护进程 每分钟执行一次即可
	public function daemon()
	{
		# 查看进程是否存在
		$state = Dever::process('lib/api.cron', true);
		if ($state <= 0) {
			Dever::daemon('lib/api.cron', 'spider');
		}

		# 查看当前所有项目是否可以开始运行
		$data = Dever::load('spider/lib/project')->getAll();
		if ($data) {
			foreach ($data as $k => $v) {
				$this->add_api($v);
			}
		}
	}

	public function cron()
	{
		$this->queue = new Queue();
		//Dever::import('task');
		while (1) {
			$this->load();
		}
	}

	public function load()
	{
		try {
			$id = $this->queue->pop();
			if ($id) {
				$config = Dever::load('spider/lib/project')->get($id);
				if ($config) {
					# 推到后台运行
					# 获取当前执行的进程数量
		            $num = Dever::process('lib/api.run', true);
		            if ($num >= 1000) {
		                # 等会儿再执行
		                sleep(60);
		            }
		            $num = Dever::process('lib/api.run?id=' . $id, true);
		            if ($num <= 0) {
		                Dever::daemon('lib/api.run?id=' . $id, 'spider');
		            }
				}
			}
			return true;
		} catch (\Exception $e) {
            return true;
        }
	}

	public function run()
	{
		$id = Dever::input('id');
		if (!$id) {
			return false;
		}
		$config = Dever::load('spider/lib/project')->get($id);
		if (!$config) {
			return false;
		}
		$cate = Dever::db('spider/cate')->find($config['cate_id']);
		if (!$cate) {
			return false;
		}
		$col = $this->col($config['id']);
		$set = $this->set($config['id']);

		$config['curl'] = array
		(
			'request_type' => $config['request_type'],
			'content_type' => $config['content_type'],
			'header' => $config['header'],
			'param' => $config['param'],
		);
		
		$site = Dever::split($config['site']);

		$config['site'] = $site[0];
		$config['page'] = '';

		if (!strstr($config['site'], 'http')) {
			$config['site'] = $cate['site'] . $config['site'];
		}

		if (isset($site[1]) && $site[1]) {
			$config['page'] = $site[1];
		}

		if ($cate['collect_rule'] && $cate['site']) {
			$rule = Dever::split($cate['collect_rule']);
			if (!isset($rule[1])) {
				$rule[1] = '';
			}

			$doc = Doc::getInstance($cate['site'], $rule[0]);

			$doc->log(new Log($id));
			$data = $doc->get($config['curl']);
			$data = Dever::json_decode($data);
			if ($data) {
				foreach ($data as $k => $v) {
					if (!$v) {
						continue;
					}
					if ($rule[1] && !strstr($v, $rule[1])) {
						continue;
					}
					$config['site'] = $v;
					$this->task($config, $col, $set, $v);
				}
			}
		} else {
			$this->task($config, $col, $set);
		}

		
		Dever::load('spider/lib/project')->set($config, 2);
	}

	private function task($config, $col, $set, $cate = false)
	{
		if (strpos($config['site'], '{cate=') !== false) {
			$pat = '/{cate=(.*?)}/i';
			preg_match_all($pat, $config['site'], $match);
			if (isset($match[1][0]) && $match[1][0]) {
				$cate = $cate ? $cate : $match[1][0];
				$config['site'] = str_replace($match[0][0], $cate, $config['site']);
			}
		}

		if ($config['page'] && strpos($config['page'], '{cate=') !== false) {
			$pat = '/{cate=(.*?)}/i';
			preg_match_all($pat, $config['page'], $match);
			if (isset($match[1][0]) && $match[1][0]) {
				$cate = $cate ? $cate : $match[1][0];
				$config['page'] = str_replace($match[0][0], $cate, $config['page']);
			}
		}

		if ($config['page'] && strpos($config['page'], '{page=') !== false) {
			$this->page($config['page'], 1, $config, $col, $set);
		} elseif (strpos($config['site'], '{page=') !== false) {
			$this->page($config['site'], 2, $config, $col, $set);
		} elseif ($config['param'] && strpos($config['param'], '{page=') !== false) {
			$this->page($config['param'], 3, $config, $col, $set);
		} else {
			Dever::load('spider/lib/project')->set($config, 4, 1);
			$this->parse($config['site'], $config['id'], $config['collect_list_rule'], $config['collect_rule'], $config['curl'], $col, $set, $config['push']);
		}
		/*
		Dever::task(function() use($config, $this)
		{
			$col = $this->col($config['id']);
			$this->parse($config['url'], $config['id'], $config['collect_rule'], $col);
		});
		*/
	}

	private function col($project, $source = 1)
	{
		return Dever::db('spider/col')->getList(['where_pid' => $project]);
	}

	private function set($project)
	{
		return Dever::db('spider/set')->getList(['where_pid' => $project]);
	}

	private function parse($url, $project, $list_rule, $rule, $param, $col, $set, $push)
	{
		$test = Dever::input('test');
		if ($test == 1) {
			$parse = new Parse($url, $project, $list_rule, $rule, $param, $col, $set, $push);
			return $parse->get();
		}
		try {
			$parse = new Parse($url, $project, $list_rule, $rule, $param, $col, $set, $push);
			return $parse->get();
		} catch (\Exception $e) {
            return false;
        }
	}

	private function page($source, $type, $config, $col, $set)
	{
		$site = $config['site'];
		$pat = '/{page=(.*?)}/i';
		preg_match_all($pat, $source, $match);
		if (isset($match[1][0]) && $match[1][0]) {
			if ($config['page_num'] <= 0) $config['page_num'] = 100;
			//parse_str($match[1][0], $param);
			$page = $match[1][0];

			for ($i = $page; $i <= $config['page_num']; $i++) {
				$site_page = str_replace($match[0][0], $i, $source);
				Dever::load('spider/lib/project')->set($config, 4, $i);
				if ($type == 1) {
					if ($i == 1) {
						$site = $config['site'];
					} else {
						$site = $config['site'] . $site_page;
					}
				} elseif ($type == 2) {
					$site = $site_page;
				} else {
					$config['curl']['param'] = $site_page;
				}
				$this->parse($site, $config['id'], $config['collect_list_rule'], $config['collect_rule'], $config['curl'], $col, $set, $config['push']);
			}
		}
	}
}