<?php

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);

session_start();

if (empty($_SESSION['access_granted_kampfrichter']) || $_SESSION['access_granted_kampfrichter'] !== true || empty($_SESSION['passcodekampfrichter_id']) || $_SESSION['passcodekampfrichter_id'] < 1) {
	http_response_code(403);
	exit;
}

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

if (!isset($baseDir)) {
    $baseDir = $_SERVER['DOCUMENT_ROOT'];
}

$type = 'kr';

$data = require $baseDir . '/../scripts/db/db-verbindung-script.php';

if ($data['success'] === false){
	echo json_encode(['success' => false, 'message' => $data['message']]);
    exit; 
}

require $baseDir . '/../scripts/db/db-functions.php';
require $baseDir . '/../scripts/db/db-tables.php';


$person_id  = isset($_POST['personId']) ? intval($_POST['personId']) : 0;
$field_type_id = intval($_POST['fieldTypeId'] ?? 0);
$gereat_id     = intval($_POST['gereatId'] ?? 0);
$jahr       = isset($_POST['jahr']) ? intval($_POST['jahr']) : 0;
$run_number = isset($_POST['run']) ? intval($_POST['run']) : 1;

if (!isset($_POST['value'])) {
    echo json_encode(['success' => false, 'message' => 'Kein Value angegeben']);
    exit;
}

$valueNoteUpdate = floatval($_POST['value']);

if ($person_id < 1) {
    echo json_encode(['success' => false, 'message' => 'Invalide Personen-ID']);
    exit;
}

if ($jahr < 1) {
    echo json_encode(['success' => false, 'message' => 'Invalides Jahr']);
    exit;
}

if ($gereat_id < 1) {
    echo json_encode(['success' => false, 'message' => 'Invalide Geraet-ID']);
    exit;
}

$geratExistiert = db_get_var($mysqli, "SELECT 1 FROM $tableGeraete WHERE id = ? LIMIT 1", [$gereat_id]);

if (!$geratExistiert) {
    echo json_encode(['success' => false, 'message' => 'Invalide Geraet-ID']);
    exit;
}

if ($field_type_id < 1) {
    echo json_encode(['success' => false, 'message' => 'Invalide Notentyp-ID']);
    exit;
}

$noteConfig = db_select($mysqli, $tableNotenBezeichnungen, "*", "id = ?", [$field_type_id]);

if (count($noteConfig) !== 1) {
    echo json_encode(['success' => false, 'message' => 'Invalide Notentyp-ID']);
    exit;
}

$singleNoteConfig = $noteConfig[0];

if ($singleNoteConfig['max_value'] !== null && $valueNoteUpdate > $singleNoteConfig['max_value']) {
    echo json_encode(['success' => false, 'message' => "Wert zu hoch (max " . $singleNoteConfig['max_value'].")"]);
    exit;
}

if ($singleNoteConfig['min_value'] !== null && $valueNoteUpdate < $singleNoteConfig['min_value']){
    echo json_encode(['success' => false, 'message' => "Wert zu niedrig (min " . $singleNoteConfig['min_value'].")"]);
    exit;
}

$sql = "INSERT INTO $tableNoten (`value`, `person_id`, `note_bezeichnung_id`, `geraet_id`, `jahr`, `run_number`) 
        VALUES (?, ?, ?, ?, ?, ?) 
        ON DUPLICATE KEY UPDATE `value` = VALUES(`value`)";

$stmt = $mysqli->prepare($sql);

$stmt->bind_param("siiiii", $valueNoteUpdate, $person_id, $field_type_id, $gereat_id, $jahr, $run_number);

$stmt->execute();

$stmt->close();

if ($singleNoteConfig['berechnung_json'] === null) {
    echo json_encode(['success' => true, 'message' => "Wert aktualisiert"]);
    exit;
}

require $baseDir . "/../scripts/string-calculator/string-calculator-functions.php";

$updateNoten = [];

$notenRechner = new NotenRechner();

try {
    $abhaenigeRechnungen = json_decode($singleNoteConfig['berechnung_json']);
} catch (Exception $e) {
    echo json_encode(['success' => true, 'message' => "Wert aktualisiert, fehler bei der Berechnung der weiteren Werte"]);
    exit;
}

$geraete = db_select($mysqli, $tableGeraete, "id");

// Alle Werte werden von der Datenbank geholt und werden, wenn nicht vorhanden, durch den Standartwert ersetzt.

$alleNoten = db_select($mysqli, $tableNotenBezeichnungen, "id, berechnung, default_value, nullstellen, pro_geraet, geraete_json, anzahl_laeufe_json");

$noten = db_select($mysqli, $tableNoten, "`value`, `note_bezeichnung_id`, `geraet_id`, `run_number`", "`person_id` = ? AND `jahr` = ?", [$person_id, $jahr]);

$ascArrayDefaultValues = array_column($alleNoten, 'default_value', 'id');
$ascArrayProGeraet = array_column($alleNoten, 'pro_geraet', 'id');
$ascArrayGeraeteJSON = array_column($alleNoten, 'geraete_json', 'id');
$ascArrayAnzahlLaeufeJSON = array_column($alleNoten, 'anzahl_laeufe_json', 'id');
$ascArrayRechnungen = array_column($alleNoten, 'berechnung', 'id');


// $proGeraet = intval($calc['pro_geraet']) !== 1;


$indexedNotenArray = [];

foreach ($ascArrayGeraeteJSON as $key => $saagj) {
    $ascArrayGeraeteJSON[$key] = json_decode($saagj, true);
}

foreach ($ascArrayAnzahlLaeufeJSON as $key => $saalj) {
    $ascArrayAnzahlLaeufeJSON[$key] = json_decode($saalj, true) ?? [];
}

foreach ($geraete as $g) {
    $indexedNotenArray[$g['id']] = [];
}

$indexedNotenArray[0] = [];

foreach ($noten as $sn) {
    $indexedNotenArray[$sn['geraet_id']][$sn['note_bezeichnung_id']][$sn['run_number']] = $sn['value'];
}

$alleNotenIds = array_column($alleNoten, 'id') ?? [];

foreach ($indexedNotenArray as $sG => $siNA) {
    $existierendeNotenIds = array_keys($siNA) ?? [];

    $nichtExistierendeNotenIds = array_diff($alleNotenIds, $existierendeNotenIds) ?? [];

    foreach ($nichtExistierendeNotenIds as $neni) {
        if (!isset($ascArrayDefaultValues[$neni])) { continue; }
        if (intval($ascArrayProGeraet[$neni]) === 1 && intval($sG) === 0) { continue; }
        if (intval($ascArrayProGeraet[$neni]) !== 1 && (!is_array($ascArrayGeraeteJSON[$neni]) || !in_array($sG, $ascArrayGeraeteJSON[$neni]))) { continue; }

        // For non-existent notes, we fill all runs with default value
        // We set Run 1 by default, and if more are configured, also those
        $indexedNotenArray[$sG][$neni][1] = $ascArrayDefaultValues[$neni];
        
        // Check for more runs in config? (Actually, this might be overkill for defaults,
        // but the calculator might need them)
    }
}

// We only want to save the IDs that were actually recalculated
$idsToSave = []; 

foreach ($abhaenigeRechnungen as $sRechnung) {
    if ($sRechnung[1] !== "A" && intval($sRechnung[1]) !== $gereat_id) { continue; }

    $rechnung = $ascArrayRechnungen[$sRechnung[0]] ?? null;

    $gereadIdArrays = ($sRechnung[1] === "A") ? $gereat_id : $sRechnung[1];

    $targetNoteId = $sRechnung[0];
    $isProGeraet = (intval($ascArrayProGeraet[$targetNoteId]) === 1);
    $allowedGeraete = $ascArrayGeraeteJSON[$targetNoteId] ?? [];

    if ($isProGeraet) {
        $gereadIdArrays = $gereat_id; 
    } elseif (in_array($gereat_id, $allowedGeraete)) {
        $gereadIdArrays = $gereat_id; 
    } else {
        $gereadIdArrays = 0;
    }
    
    if ($rechnung === null) {
        echo json_encode(['success' => true, 'message' => "Wert aktualisiert, Fehler: Rechnung" . $sRechnung[0] . "nicht gefunden"]);
        exit;
    }

    $calcResult = $notenRechner->berechneStringComplex($rechnung, $indexedNotenArray, $gereat_id);
    if ($calcResult['success'] !== true) {
        echo json_encode(['success' => true, 'message' => "Wert aktualisiert, Rechenfehler: " . ($calcResult['value'] ?? '')]);
        exit;
    }

    // Update the local array (Always Run 1 for calculations for now, UNLESS we want calculated runs?)
    // Most calculations are "Total" points which have run_number = 1
    $indexedNotenArray[$gereadIdArrays][$sRechnung[0]][1] = $calcResult['value'];
    
    // Track that this ID needs to be written to the database (Target run is 1)
    $updatedValues[$gereadIdArrays][$sRechnung[0]][1] = $calcResult['value'];
}


// Prepare the statement once
$sql = "INSERT INTO $tableNoten (`value`, `person_id`, `note_bezeichnung_id`, `geraet_id`, `jahr`, `run_number`) 
        VALUES (?, ?, ?, ?, ?, ?)
        ON DUPLICATE KEY UPDATE `value` = VALUES(`value`)";

$stmt = $mysqli->prepare($sql);

$indexedNullstellen = array_column($alleNoten, 'nullstellen', 'id');

$formatedNoten = [];

foreach ($updatedValues as $gereat => $notenArray) {
    foreach ($notenArray as $note => $runArray) {
        foreach ($runArray as $run => $value) {
            $stmt->bind_param("siiiii", $value, $person_id, $note, $gereat, $jahr, $run);
            $stmt->execute();
            $formatedNoten[$gereat][$note][$run] = number_format($value ,$indexedNullstellen[$note] ?? 2);
        }
    }
}

$formatedNoten[$gereat_id][$field_type_id][$run_number] = number_format($valueNoteUpdate ,$indexedNullstellen[$field_type_id] ?? 2);

$stmt->close();
$mysqli->close();

echo json_encode([
    'success' => true, 
    'message' => "Wert aktualisiert, alle Berechnungen durchgeführt", 
    "noten"   => $formatedNoten
]);