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

use app\service\ArticleImportService;
use support\Db;

require __DIR__ . '/../vendor/autoload.php';
require __DIR__ . '/../support/bootstrap.php';
require __DIR__ . '/../vendor/webman/database/src/support/Db.php';

$archiveUid = null;
$force = false;
$dryRun = false;

foreach (array_slice($argv, 1) as $argument) {
    if (str_starts_with($argument, '--archive_uid=')) {
        $archiveUid = substr($argument, strlen('--archive_uid='));
        continue;
    }

    if ($argument === '--force') {
        $force = true;
        continue;
    }

    if ($argument === '--dry-run') {
        $dryRun = true;
    }
}

$query = Db::table('archives')->orderBy('id');
if ($archiveUid !== null && trim($archiveUid) !== '') {
    $query->where('archive_uid', trim($archiveUid));
}

if (!$force) {
    $query->where(function ($builder) {
        $builder->whereNull('content')->orWhere('content', '');
    });
}

$archives = $query->get(['archive_uid', 'title', 'content', 'raw'])->all();
$normalizer = new ArticleImportService();

$scanned = 0;
$updated = 0;
$fromRaw = 0;
$fromChunks = 0;
$skipped = 0;

foreach ($archives as $archive) {
    $scanned++;
    $archiveUidValue = (string) $archive->archive_uid;
    $raw = is_string($archive->raw ?? null) ? $archive->raw : null;
    $content = null;
    $source = 'none';

    if (is_string($raw) && trim($raw) !== '') {
        $content = $normalizer->normalizeArchiveContentString($raw);
        $source = 'raw';
    } else {
        $chunks = Db::table('chunks')
            ->where('archive_uid', $archiveUidValue)
            ->orderBy('chunk_index')
            ->pluck('text')
            ->all();

        $chunks = array_values(array_filter(array_map(
            static fn ($value): string => trim((string) $value),
            $chunks
        ), static fn (string $value): bool => $value !== ''));

        if ($chunks !== []) {
            $content = trim(implode("\n\n", $chunks));
            $source = 'chunks';
        }
    }

    if ($content === null || $content === '') {
        $skipped++;
        echo "[skip] {$archiveUidValue} no usable raw/chunks" . PHP_EOL;
        continue;
    }

    if ($dryRun) {
        echo "[dry-run] {$archiveUidValue} source={$source} content_length=" . mb_strlen($content) . PHP_EOL;
        if ($source === 'raw') {
            $fromRaw++;
        } else {
            $fromChunks++;
        }
        continue;
    }

    Db::table('archives')
        ->where('archive_uid', $archiveUidValue)
        ->update(['content' => $content]);

    $updated++;
    if ($source === 'raw') {
        $fromRaw++;
    } else {
        $fromChunks++;
    }

    echo "[updated] {$archiveUidValue} source={$source} content_length=" . mb_strlen($content) . PHP_EOL;
}

echo 'Archive content backfill completed.' . PHP_EOL;
echo 'Archive filter: ' . ($archiveUid ?: 'auto') . PHP_EOL;
echo 'Force mode: ' . ($force ? 'yes' : 'no') . PHP_EOL;
echo 'Dry run: ' . ($dryRun ? 'yes' : 'no') . PHP_EOL;
echo 'Scanned: ' . $scanned . PHP_EOL;
echo 'Updated: ' . $updated . PHP_EOL;
echo 'From raw: ' . $fromRaw . PHP_EOL;
echo 'From chunks: ' . $fromChunks . PHP_EOL;
echo 'Skipped: ' . $skipped . PHP_EOL;