<?php

declare(strict_types=1);


$JS_SCRIPT_URL = [
  "selected_source" => 1,
  "sources" =>
  [["url" => "https://fem.nz/ring/transfemring.js",
    "source" => "internet"],
  ["url" => "includes/transfemring.js",
    "source" => "local"]]
    ];

$VALID_WIDGET_TYPES = ["transgender", "nonbinary"];

$widget_type = $VALID_WIDGET_TYPES[1];
$id = 8;


/* Implement fallback if scraping doesn't work */

function scrapeSitesFromSource(array $source) {

  function getSiteArray(array $source) {
    function getFile(array $source){

      $selected_source = $source["sources"][$source["selected_source"]];

      if ($selected_source["source"] === "local") {
        $file = file_get_contents($selected_source["url"]);
      } else {
        $curl = curl_init($selected_source["url"]);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

        $file = curl_exec($curl);
        if ($file === false) {
          echo "Error: " . curl_error($curl);
          exit;
        }

        curl_close($curl);
      }
      return $file;
    }

    function extractSites(string $script) {
      $start_pos = strpos($script,"sites: [") + 8; // needle has 9 characters
      $end_pos = strpos($script, "]", $start_pos);

      $sites = substr($script, $start_pos, $end_pos - $start_pos);

      return $sites;
    }

    return extractSites(getFile($source));
  }

  function primarySplit(string $array) {
    $i = 0;
    while (strlen($array) !== 0) {
      // Strip coma if found
      if (str_starts_with($array,',')) {
        $array = substr($array,1);
      }

      // Get substring position and length
      $start_pos = 1;
      $end_pos = strpos($array,"}",1);
      $item_len = $end_pos - $start_pos;

      // Save website into array, and strip array
      $return_array[$i] = substr($array,$start_pos,$item_len);
      $array = substr($array,$item_len+2); // +2 from { and }

      $i++;
    }
    return $return_array;
  }

  function secondarySplit(string $sub_array) {
    while (strlen($sub_array) !== 0){
      if (str_starts_with($sub_array,',')) {
        $sub_array = substr($sub_array,1);
      }

      $key_start_pos = 1;
      $key_end_pos = strpos($sub_array,"\"",1);
      $key_len = $key_end_pos - $key_start_pos;
      $key = substr($sub_array,$key_start_pos,$key_len);

      $value_start_pos = $key_len + 3; // +3 from " , " and :
      // Check if key is quoted
      if (strpos($sub_array,"\"",$value_start_pos) != $value_start_pos) {
        $keyhasQuotes = FALSE;
        $value_end_pos = strpos($sub_array,",");
      } else {
        $value_start_pos++; // +1 from "
        $value_end_pos = strpos($sub_array,"\"",$value_start_pos);
        $keyhasQuotes = TRUE;
      } 
      $value_len = $value_end_pos - $value_start_pos;
      $value = substr($sub_array,$value_start_pos,$value_len);

      $return_sub_array[$key] = $value;

      $sub_sub_array_len = $key_len + $value_len + 3; // +3 from " , " and :
      if ($keyhasQuotes) {
        $sub_sub_array_len = $sub_sub_array_len + 2; // +2 from " and "
      }

      $sub_array = substr($sub_array,$sub_sub_array_len);
    }
    return $return_sub_array;
  }

  $websites = primarySplit(getSiteArray($source));

  for ($i = 0; $i < sizeof($websites); $i++) {
    $return_websites[$i] = secondarySplit($websites[$i]);
  }

  return $return_websites;
  
}
                        
$transfermring_sites = scrapeSitesFromSource($JS_SCRIPT_URL);


$root = "https://fem.nz";

// Add checks if id is at the start

for ($i = 0; $i < count($transfermring_sites); $i++){
    if ($transfermring_sites[$i]["id"] == $id){
        $prev = $transfermring_sites[($i-1)]["site_link"];
        $current = $transfermring_sites[($i)]["site_link"];
        $next = $transfermring_sites[($i+1)]["site_link"];
    }
}

$prev = 'https://' . $prev;
$current = 'https://' . $current;
$next = 'https://' . $next;

$file = [
  "nonbinary" => [
    "arrow_path" => "../../../img/webrings/transfem_enby_arrow.png",
    "banner_path" => "../../../img/webrings/transfem_enby_banner.png"
  ],
  "transgender" => [
    "arrow_path" => "../../../img/webrings/transfem_trans_arrow.png",
    "banner_path" => "../../../img/webrings/transfem_trans_banner.png"
  ]
];