<?php

namespace App\Traits;

use App\Models\SofaScorePlayerPerSeason;
use App\Models\StatistikoDetail;
use App\Models\StatistikoPlayer;
use App\Utilities\Notice;
use Illuminate\Support\Facades\Concurrency;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Str;
use PDO;
use PDOStatement;

use function Laravel\Prompts\select;

trait UpdateHelper
{
    protected float $benchmarkStartTime;

    protected int $benchmarkStartMemory;

    protected int $startRowCount;

    protected int $startQueries;

    protected int $debug;

    public function handle(): void
    {
        error_reporting(E_ALL);
        ini_set('display_errors', 1);

        $tmp = $this->options();
        $this->debug = $tmp['d'] ?? 0;

        if ($this->debug) {
            Notice::note('Update Player Season', 'g');
        }

        if ($this->debug) {
            $playerCount = $this->selectPlayer();
        } else {
            $playerCount = 1000000;
        }

        if ($this->debug) {
            $this->startBenchmark();
        }

        try {
            $this->updatePlayers($playerCount);
        } catch (\Exception $e) {
            $this->error(get_class($e).' '.Str::of($e->getMessage())->limit(100)->value());
        }

        if ($this->debug) {
            $this->endBenchmark();
        }
    }

    // Flight::upsert([
    //     ['departure' => 'Oakland', 'destination' => 'San Diego', 'price' => 99],
    //     ['departure' => 'Chicago', 'destination' => 'New York', 'price' => 150]
    // ], uniqueBy: ['departure', 'destination'], update: ['price']);

    protected function selectPlayer(): string
    {
        $file = select(
            label: 'How many players to update?',
            options: ['100 Player', '1k Player', '10k Player', '100k Player', '1m Player']
        );

        return match ($file) {
            '100 Player' => 100,
            '1k Player' => 1000,
            '10k Player' => 10000,
            '100k Player' => 100000,
            '1m Player' => 1000000,
        };
    }

    protected function startBenchmark(string $table = 'sofa_score_player_per_seasons'): void
    {
        $this->startRowCount = DB::table($table)->count();
        $this->benchmarkStartTime = microtime(true);
        $this->benchmarkStartMemory = memory_get_usage();
        DB::enableQueryLog();
        $this->startQueries = DB::select("SHOW SESSION STATUS LIKE 'Questions'")[0]->Value;
    }

    protected function endBenchmark(string $table = 'sofa_score_player_per_seasons'): void
    {
        $executionTime = microtime(true) - $this->benchmarkStartTime;
        $memoryUsage = round((memory_get_usage() - $this->benchmarkStartMemory) / 1024 / 1024, 2);
        $queriesCount = DB::select("SHOW SESSION STATUS LIKE 'Questions'")[0]->Value - $this->startQueries - 1; // Subtract the Questions query itself

        // Get row count after we've stopped tracking queries
        $rowDiff = DB::table($table)->count() - $this->startRowCount;

        $formattedTime = match (true) {
            $executionTime >= 60 => sprintf('%dm %ds', floor($executionTime / 60), $executionTime % 60),
            $executionTime >= 1 => round($executionTime, 2).'s',
            default => round($executionTime * 1000).'ms',
        };

        $this->newLine();
        $this->line(sprintf(
            '⚡ <bg=bright-cyan;fg=black> TIME: %s </> <bg=bright-green;fg=black> MEM: %sMB </> <bg=bright-yellow;fg=black> SQL: %s </> <bg=bright-magenta;fg=black> ROWS: %s </>',
            $formattedTime,
            $memoryUsage,
            number_format($queriesCount),
            number_format($rowDiff)
        ));
        $this->newLine();
    }

    protected function updatePlayers(int $playerCount)
    {
        $res_player = StatistikoDetail::query()->where('is_active', 1)->limit($playerCount)->pluck('ss_player_id')->toArray();

        $chunks = array_chunk($res_player, 1000);

        foreach ($chunks as $chunk) {

            $res = StatistikoPlayer::with('event')->with('details')->whereIn('ss_player_id', $chunk)->orderBy('ss_player_id')->get();

            $collection = [];
            foreach ($res as $val) {

                $ss_player_id = (int) $val->ss_player_id;
                $activeteam_id = (int) $val->activeteam_id;
                $minutes_played = (int) $val->minutes_played;
                $ss_team_id = (int) $val->details->ss_team_id;
                $season = $val->event->season;
                $home_id = (int) $val->event->home_id;
                $away_id = (int) $val->event->away_id;

                if ($season) {

                    if (! isset($collection[$season][$ss_player_id])) {
                        $this->array_template($collection, $ss_player_id, $season);
                    }
                    if (! isset($collection['total'][$ss_player_id])) {
                        $this->array_template($collection, $ss_player_id, 'total');
                    }

                    if ($minutes_played > 0) {
                        if ($activeteam_id == $home_id) {
                            $collection[$season][$ss_player_id]['events_played_home'] += 1;
                            $collection[$season][$ss_player_id]['minutes_played_home'] += $minutes_played;
                            $collection['total'][$ss_player_id]['events_played_home'] += 1;
                            $collection['total'][$ss_player_id]['minutes_played_home'] += $minutes_played;
                        } elseif ($activeteam_id == $away_id) {
                            $collection[$season][$ss_player_id]['events_played_away'] += 1;
                            $collection[$season][$ss_player_id]['minutes_played_away'] += $minutes_played;
                            $collection['total'][$ss_player_id]['minutes_played_away'] += 1;
                            $collection['total'][$ss_player_id]['minutes_played_away'] += $minutes_played;
                        }

                        $cards = $val->card_yellow + $val->card_yellowred + $val->card_red;

                        $collection[$season][$ss_player_id]['ss_player_id'] = $ss_player_id;
                        $collection[$season][$ss_player_id]['ss_team_id'] = $ss_team_id;
                        $collection[$season][$ss_player_id]['season'] = $season;
                        $collection[$season][$ss_player_id]['total_events']++;
                        $collection[$season][$ss_player_id]['total_min'] += $minutes_played;
                        $collection[$season][$ss_player_id]['average_min'] = round($collection[$season][$ss_player_id]['total_min'] / $collection[$season][$ss_player_id]['total_events']);
                        $collection[$season][$ss_player_id]['goals'] += $val->goals;
                        $collection[$season][$ss_player_id]['fouls'] += $val->fouls;
                        $collection[$season][$ss_player_id]['cards'] += $cards;
                        $collection[$season][$ss_player_id]['offsides'] += $val->offsides;
                        $collection[$season][$ss_player_id]['shots_on_target'] += $val->shots_on_target;
                        $collection[$season][$ss_player_id]['shots_off_target'] += $val->shots_off_target;

                        $collection['total'][$ss_player_id]['ss_player_id'] = $ss_player_id;
                        $collection['total'][$ss_player_id]['ss_team_id'] = $ss_team_id;
                        $collection['total'][$ss_player_id]['season'] = 'total';
                        $collection['total'][$ss_player_id]['total_events']++;
                        $collection['total'][$ss_player_id]['total_min'] += $minutes_played;
                        $collection['total'][$ss_player_id]['average_min'] = round($collection['total'][$ss_player_id]['total_min'] / $collection['total'][$ss_player_id]['total_events']);
                        $collection['total'][$ss_player_id]['goals'] += $val->goals;
                        $collection['total'][$ss_player_id]['fouls'] += $val->fouls;
                        $collection['total'][$ss_player_id]['cards'] += $cards;
                        $collection['total'][$ss_player_id]['offsides'] += $val->offsides;
                        $collection['total'][$ss_player_id]['shots_on_target'] += $val->shots_on_target;
                        $collection['total'][$ss_player_id]['shots_off_target'] += $val->shots_off_target;
                    }
                }
            }

            $collection_1d = [];
            foreach ($collection as $arr) {
                foreach ($arr as $row) {
                    $collection_1d[] = $row;
                }
            }
            SofaScorePlayerPerSeason::upsert(
                $collection_1d,
                [
                    'ss_player_id',
                    'ss_team_id',
                    'season',
                ],
                [
                    'total_events',
                    'total_min',
                    'average_min',
                    'events_played_home',
                    'events_played_away',
                    'minutes_played_home',
                    'minutes_played_away',
                    'goals',
                    'fouls',
                    'offsides',
                    'shots_on_target',
                    'shots_off_target',
                    'cards',
                ]
            );
        }
    }

    private function array_template(array &$collection, int $ss_player_id, string $season)
    {
        $collection[$season][$ss_player_id]['ss_player_id'] = 0;
        $collection[$season][$ss_player_id]['ss_team_id'] = 0;
        $collection[$season][$ss_player_id]['season'] = '';
        $collection[$season][$ss_player_id]['total_events'] = 0;
        $collection[$season][$ss_player_id]['total_min'] = 0;
        $collection[$season][$ss_player_id]['average_min'] = 0;
        $collection[$season][$ss_player_id]['events_played_home'] = 0;
        $collection[$season][$ss_player_id]['events_played_away'] = 0;
        $collection[$season][$ss_player_id]['minutes_played_home'] = 0;
        $collection[$season][$ss_player_id]['minutes_played_away'] = 0;
        $collection[$season][$ss_player_id]['goals'] = 0;
        $collection[$season][$ss_player_id]['fouls'] = 0;
        $collection[$season][$ss_player_id]['offsides'] = 0;
        $collection[$season][$ss_player_id]['shots_on_target'] = 0;
        $collection[$season][$ss_player_id]['shots_off_target'] = 0;
        $collection[$season][$ss_player_id]['cards'] = 0;
    }

    private function import08ManualStreamingWithPdo(string $filePath): void
    {
        // 100 7ms / 0MB
        // 1K 78ms / 0MB
        // 10K 328ms / 0MB
        // 100K 2.9s / 0MB
        // 1M 28s / 0MB
        $data = [];
        $handle = fopen($filePath, 'rb');
        fgetcsv($handle); // skip header
        $now = now()->format('Y-m-d H:i:s');
        $pdo = DB::connection()->getPdo();

        while (($row = fgetcsv($handle)) !== false) {
            $data[] = [
                'custom_id' => $row[0],
                'name' => $row[1],
                'email' => $row[2],
                'company' => $row[3],
                'city' => $row[4],
                'country' => $row[5],
                'birthday' => $row[6],
                'created_at' => $now,
                'updated_at' => $now,
            ];

            if (count($data) === 1000) {
                // Build the SQL query for the chunk
                $columns = array_keys($data[0]);
                $placeholders = rtrim(str_repeat('(?,?,?,?,?,?,?,?,?),', count($data)), ',');

                $sql = 'INSERT INTO customers ('.implode(',', $columns).') VALUES '.$placeholders;

                // Flatten the data array for the query
                $values = [];
                foreach ($data as $row) {
                    $values = array_merge($values, array_values($row));
                }

                $pdo->prepare($sql)->execute($values);
                $data = [];
            }
        }

        if (! empty($data)) {
            $columns = array_keys($data[0]);
            $placeholders = rtrim(str_repeat('(?,?,?,?,?,?,?,?,?),', count($data)), ',');

            $sql = 'INSERT INTO customers ('.implode(',', $columns).') VALUES '.$placeholders;

            $values = [];
            foreach ($data as $row) {
                $values = array_merge($values, array_values($row));
            }

            $pdo->prepare($sql)->execute($values);
        }

        fclose($handle);
    }

    private function import09PDOPrepared(string $filePath): void
    {
        // Direct database connection with prepared statements
        // 100 41ms / 0 MB
        // 1K 237ms /
        // 10K 2.21s
        // 100K 25.27s
        // 1M 4m43s
        // 2M
        $now = now()->format('Y-m-d H:i:s');
        $handle = fopen($filePath, 'r');
        fgets($handle); // skip header

        try {
            $pdo = DB::connection()->getPdo();
            $stmt = $pdo->prepare('
            INSERT INTO customers (custom_id, name, email, company, city, country, birthday, created_at, updated_at)
            VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
        ');

            while (($row = fgetcsv($handle)) !== false) {
                $stmt->execute([
                    $row[0],
                    $row[1],
                    $row[2],
                    $row[3],
                    $row[4],
                    $row[5],
                    $row[6],
                    $now,
                    $now,
                ]);
            }
        } finally {
            fclose($handle);
        }
    }

    private function import10PDOPreparedChunked(string $filePath): void
    {
        // Direct database connection with prepared statements
        // 100 12ms / 0.15MB
        // 1K 49ms / 0.74MB
        // 10K 222ms / 0.74MB
        // 100K 1.5s / 0.74MB
        // 1M 15.3s / 0.74MB
        // 2M 24s / 0.74MN
        $now = now()->format('Y-m-d H:i:s');
        $handle = fopen($filePath, 'r');
        fgetcsv($handle); // skip header
        $chunkSize = 500;
        $chunks = [];

        try {
            $stmt = $this->prepareChunkedStatement($chunkSize);

            while (($row = fgetcsv($handle)) !== false) {
                $chunks = array_merge($chunks, [
                    $row[0], $row[1], $row[2], $row[3], $row[4],
                    $row[5], $row[6], $now, $now,
                ]);

                if (count($chunks) === $chunkSize * 9) {  // 9 columns
                    $stmt->execute($chunks);
                    $chunks = [];
                }
            }

            // Handle remaining records
            if (! empty($chunks)) {
                $remainingRows = count($chunks) / 9;
                $stmt = $this->prepareChunkedStatement($remainingRows);
                $stmt->execute($chunks);
            }
        } finally {
            fclose($handle);
        }
    }

    private function import11Concurrent(string $filePath): void
    {
        // 100 168ms
        // 1K 172ms
        // 10K 234ms
        // 100K 595ms
        // 1M 4.36s
        // 2M 8.8s
        $now = now()->format('Y-m-d H:i:s');
        $numberOfProcesses = 10;

        $tasks = [];
        for ($i = 0; $i < $numberOfProcesses; $i++) {
            $tasks[] = function () use ($filePath, $i, $numberOfProcesses, $now) {
                DB::reconnect();

                $handle = fopen($filePath, 'r');
                fgets($handle); // Skip header
                $currentLine = 0;
                $customers = [];

                while (($line = fgets($handle)) !== false) {
                    // Each process takes every Nth line
                    if ($currentLine++ % $numberOfProcesses !== $i) {
                        continue;
                    }

                    $row = str_getcsv($line);
                    $customers[] = [
                        'custom_id' => $row[0],
                        'name' => $row[1],
                        'email' => $row[2],
                        'company' => $row[3],
                        'city' => $row[4],
                        'country' => $row[5],
                        'birthday' => $row[6],
                        'created_at' => $now,
                        'updated_at' => $now,
                    ];

                    if (count($customers) === 1000) {
                        DB::table('customers')->insert($customers);
                        $customers = [];
                    }
                }

                if (! empty($customers)) {
                    DB::table('customers')->insert($customers);
                }

                fclose($handle);

                return true;
            };
        }

        Concurrency::run($tasks);

    }

    private function import12LoadDataInfile(string $filePath): void
    {
        // MySQL specific, fastest approach
        // 100 10ms / 0MB
        // 1K 29ms / 0MB
        // 10K 115ms / 0MB
        // 100K 567ms / 0MB
        // 1M 5s / 0MB
        // 2M 11s / 0MB
        $pdo = DB::connection()->getPdo();
        $pdo->setAttribute(PDO::MYSQL_ATTR_LOCAL_INFILE, true);

        $filepath = str_replace('\\', '/', $filePath);

        $query = <<<SQL
    LOAD DATA LOCAL INFILE '$filepath'
    INTO TABLE customers
    FIELDS TERMINATED BY ','
    ENCLOSED BY '"'
    LINES TERMINATED BY '\n'
    IGNORE 1 LINES
    (@col1, @col2, @col3, @col4, @col5, @col6, @col7)
    SET
        custom_id = @col1,
        name = @col2,
        email = @col3,
        company = @col4,
        city = @col5,
        country = @col6,
        birthday = @col7,
        created_at = NOW(),
        updated_at = NOW()
    SQL;

        $pdo->exec($query);
    }

    private function prepareChunkedStatement($chunkSize): PDOStatement
    {
        $rowPlaceholders = '(?, ?, ?, ?, ?, ?, ?, ?, ?)';
        $placeholders = implode(',', array_fill(0, $chunkSize, $rowPlaceholders));

        return DB::connection()->getPdo()->prepare("
        INSERT INTO customers (custom_id, name, email, company, city, country, birthday, created_at, updated_at)
        VALUES {$placeholders}
    ");
    }
}