<?php
// Simple migration runner for the current WebGIS schema.
// Run from the project root:
// php scripts/run_migrations.php

include __DIR__ . '/../src/config/koneksi.php';

header('Content-Type: text/plain; charset=utf-8');

$conn->query("CREATE TABLE IF NOT EXISTS migrations (id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(255) NOT NULL, applied_at DATETIME NOT NULL)");

function migration_applied($conn, $name){
    $st = $conn->prepare('SELECT COUNT(*) AS c FROM migrations WHERE name = ?');
    if(!$st){ return false; }
    $st->bind_param('s', $name);
    $st->execute();
    $r = $st->get_result();
    $row = $r ? $r->fetch_assoc() : null;
    $st->close();
    return $row && intval($row['c']) > 0;
}

function run_migration_file($conn, $path){
    $name = basename($path);
    if(migration_applied($conn, $name)){
        echo "Skipping already applied: $name\n";
        return true;
    }

    $sql = file_get_contents($path);
    if($sql === false){
        echo "Failed to read $name\n";
        return false;
    }

    if(!$conn->multi_query($sql)){
        echo "Failed executing $name: " . $conn->error . "\n";
        return false;
    }

    do {
        if($res = $conn->store_result()){
            $res->free();
        }
    } while($conn->more_results() && $conn->next_result());

    if($conn->errno){
        echo "Failed executing $name: " . $conn->error . "\n";
        return false;
    }

    $st = $conn->prepare('INSERT INTO migrations (name, applied_at) VALUES (?, NOW())');
    if($st){
        $st->bind_param('s', $name);
        $st->execute();
        $st->close();
    }

    echo "Applied: $name\n";
    return true;
}

$migDir = __DIR__ . '/../sql/migrations';
$files = array_values(array_filter(scandir($migDir), function($f){ return preg_match('/^\d+_.*\.sql$/', $f); }));
sort($files, SORT_NATURAL);

if(empty($files)){
    echo "No migration files found.\n";
    exit(0);
}

foreach($files as $file){
    if(!run_migration_file($conn, $migDir . '/' . $file)){
        exit(1);
    }
}

echo "Migrations complete.\n";