#!/usr/bin/env php
<?php

require_once 'vendor/autoload.php';

use PicoFeed\Client\Grabber;
use PicoFeed\Reader\Reader;
use PicoFeed\Logging\Logger;
use PicoFeed\PicoFeedException;

Logger::enable();

function get_feed($url, $disable_filtering = false)
{
    try {

        $reader = new Reader;
        $resource = $reader->discover($url);

        $parser = $reader->getParser(
            $resource->getUrl(),
            $resource->getContent(),
            $resource->getEncoding()
        );

        if ($disable_filtering) {
            $parser->disableContentFiltering();
        }

        return $parser->execute();
    }
    catch (PicoFeedException $e) {
        echo 'Exception thrown ===> "'.$e->getMessage().'"'.PHP_EOL;
        return false;
    }
}

function get_item($feed, $item_id)
{
    foreach ($feed->items as $item) {
        if ($item->getId() === $item_id) {
            echo $item;
            echo "============= CONTENT ================\n";
            echo $item->getContent();
            echo "\n============= CONTENT ================\n";
            break;
        }
    }
}

function dump_feed($url)
{
    $feed = get_feed($url);
    echo $feed;
}

function debug_feed($url)
{
    get_feed($url);
    print_r(Logger::getMessages());
}

function dump_item($url, $item_id)
{
    $feed = get_feed($url);

    if ($feed !== false) {
        get_item($feed, $item_id);
    }
}

function nofilter_item($url, $item_id)
{
    $feed = get_feed($url, true);

    if ($feed !== false) {
        get_item($feed, $item_id);
    }
}

function grabber($url)
{
    $grabber = new Grabber($url);
    $grabber->download();
    $grabber->parse();

    print_r(Logger::getMessages());
    echo "============= CONTENT ================\n";
    echo $grabber->getContent().PHP_EOL;
    echo "============= FILTERED ================\n";
    echo $grabber->getFilteredContent().PHP_EOL;
}

// Parse command line arguments
if ($argc === 4) {
    switch ($argv[1]) {
        case 'item':
            dump_item($argv[2], $argv[3]);
            die;
        case 'nofilter':
            nofilter_item($argv[2], $argv[3]);
            die;
    }
}
else if ($argc === 3) {
    switch ($argv[1]) {
        case 'feed':
            dump_feed($argv[2]);
            die;
        case 'debug':
            debug_feed($argv[2]);
            die;
        case 'grabber':
            grabber($argv[2]);
            die;
    }
}

printf("Usage:\n");
printf("%s feed <feed-url>\n", $argv[0]);
printf("%s debug <feed-url>\n", $argv[0]);
printf("%s item <feed-url> <item-id>\n", $argv[0]);
printf("%s nofilter <feed-url> <item-id>\n", $argv[0]);
printf("%s grabber <url>\n", $argv[0]);