<?php
ini_set('display_errors', '0');
require_once __DIR__ . '/../config.php';
session_start_safe();

header('Content-Type: application/json');

if ($_SERVER['REQUEST_METHOD'] !== 'POST') { http_response_code(405); echo json_encode(['error' => 'Method not allowed']); exit; }
if (empty($_SESSION['access_token']))       { echo json_encode(['reauth' => true]); exit; }
if (($_SESSION['token_expires'] ?? 0) <= time()) { echo json_encode(['reauth' => true]); exit; }

$reportCode = preg_replace('/[^a-zA-Z0-9]/', '', $_POST['report_code'] ?? '');
$fightId    = (int)($_POST['fight_id']   ?? 0);
$startTime  = (float)($_POST['start_time'] ?? 0);
$endTime    = (float)($_POST['end_time']   ?? 0);
$language   = strtolower(trim($_POST['language'] ?? 'en'));
$language   = in_array($language, ['en', 'de', 'fr', 'jp'], true) ? $language : 'en';
$translate  = $language === 'en' ? 'false' : 'true';

if (!$reportCode || !$fightId || !$endTime) { http_response_code(400); echo json_encode(['error' => 'Missing params']); exit; }

$token = $_SESSION['access_token'];

function localized_graphql_uri(string $language): string {
    $host = [
        'de' => 'de.fflogs.com',
        'fr' => 'fr.fflogs.com',
        'jp' => 'ja.fflogs.com',
    ][$language] ?? 'www.fflogs.com';
    return preg_replace('#https://[^/]+#', 'https://' . $host, GRAPHQL_URI);
}

function ab_gql(string $query): array {
    global $token, $language;
    $acceptLanguage = $language === 'jp' ? 'ja' : $language;
    $ch = curl_init(localized_graphql_uri($language));
    curl_setopt_array($ch, [
        CURLOPT_POST           => true,
        CURLOPT_POSTFIELDS     => json_encode(['query' => $query]),
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_HTTPHEADER     => ['Content-Type: application/json', 'Authorization: Bearer ' . $token, 'Accept-Language: ' . $acceptLanguage],
        CURLOPT_SSL_VERIFYPEER => !DEV_MODE,
    ]);
    $body = curl_exec($ch);
    curl_close($ch);
    return json_decode($body, true) ?? [];
}

// Fetch ability names from masterData
$mdResult = ab_gql(<<<GQL
{
  reportData {
    report(code: "$reportCode") {
      playerDetails(fightIDs: [$fightId])
      masterData(translate: $translate) {
        abilities { gameID name }
      }
    }
  }
}
GQL);

$abilityNames = [];
foreach ($mdResult['data']['reportData']['report']['masterData']['abilities'] ?? [] as $ab) {
    $abilityNames[(int)$ab['gameID']] = $ab['name'];
}

// Build sorted player list
$pdRaw    = $mdResult['data']['reportData']['report']['playerDetails'] ?? null;
$pdParsed = is_string($pdRaw) ? json_decode($pdRaw, true) : $pdRaw;
$pdGroups = $pdParsed['data']['playerDetails'] ?? [];

$players = [];
$roleMap  = ['tanks' => 'tank', 'healers' => 'healer', 'dps' => 'dps'];
foreach ($roleMap as $group => $role) {
    foreach ($pdGroups[$group] ?? [] as $p) {
        $players[] = ['name' => $p['name'], 'role' => $role];
    }
}
usort($players, fn($a, $b) => strcmp($a['name'], $b['name']));

// Fetch DamageTaken events from NPC sources only (paginated)
$filterEsc  = 'source.type = \\"NPC\\"';
$seenIds    = [];
$nextPage   = $startTime;

for ($page = 0; $page < 10; $page++) {
    $evResult = ab_gql(<<<GQL
    {
      reportData {
        report(code: "$reportCode") {
          events(
            fightIDs: [$fightId],
            dataType: DamageTaken,
            startTime: $nextPage,
            endTime: $endTime,
            filterExpression: "$filterEsc"
          ) {
            data
            nextPageTimestamp
          }
        }
      }
    }
    GQL);

    $ev       = $evResult['data']['reportData']['report']['events'] ?? [];
    foreach ($ev['data'] ?? [] as $event) {
        $abId = (int)($event['abilityGameID'] ?? 0);
        if ($abId > 7) $seenIds[$abId] = true;
    }
    $nextPage = $ev['nextPageTimestamp'] ?? null;
    if ($nextPage === null || $nextPage >= $endTime) break;
}

// Build sorted ability list
$abilities = [];
foreach (array_keys($seenIds) as $id) {
    $abilities[] = [
        'id'   => $id,
        'name' => $abilityNames[$id] ?? ('Ability #' . $id),
    ];
}
usort($abilities, fn($a, $b) => strcmp($a['name'], $b['name']));

echo json_encode(['abilities' => $abilities, 'players' => $players]);