<?php

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the GNU Affero General Public License v3.0.
// See the LICENCE file in the repository root for full licence text.

namespace App\Models;

use Illuminate\Database\Eloquent\Relations\BelongsTo;

/**
 * @property-read string $current_start_name
 * @property-read \App\Models\Count|null $currentStart
 * @property-read int[] $data
 * @property int $mode
 * @property int $r0
 * @property int $r1
 * @property int $r10
 * @property int $r11
 * @property int $r12
 * @property int $r13
 * @property int $r14
 * @property int $r15
 * @property int $r16
 * @property int $r17
 * @property int $r18
 * @property int $r19
 * @property int $r2
 * @property int $r20
 * @property int $r21
 * @property int $r22
 * @property int $r23
 * @property int $r24
 * @property int $r25
 * @property int $r26
 * @property int $r27
 * @property int $r28
 * @property int $r29
 * @property int $r3
 * @property int $r30
 * @property int $r31
 * @property int $r32
 * @property int $r33
 * @property int $r34
 * @property int $r35
 * @property int $r36
 * @property int $r37
 * @property int $r38
 * @property int $r39
 * @property int $r4
 * @property int $r40
 * @property int $r41
 * @property int $r42
 * @property int $r43
 * @property int $r44
 * @property int $r45
 * @property int $r46
 * @property int $r47
 * @property int $r48
 * @property int $r49
 * @property int $r5
 * @property int $r50
 * @property int $r51
 * @property int $r52
 * @property int $r53
 * @property int $r54
 * @property int $r55
 * @property int $r56
 * @property int $r57
 * @property int $r58
 * @property int $r59
 * @property int $r6
 * @property int $r60
 * @property int $r61
 * @property int $r62
 * @property int $r63
 * @property int $r64
 * @property int $r65
 * @property int $r66
 * @property int $r67
 * @property int $r68
 * @property int $r69
 * @property int $r7
 * @property int $r70
 * @property int $r71
 * @property int $r72
 * @property int $r73
 * @property int $r74
 * @property int $r75
 * @property int $r76
 * @property int $r77
 * @property int $r78
 * @property int $r79
 * @property int $r8
 * @property int $r80
 * @property int $r81
 * @property int $r82
 * @property int $r83
 * @property int $r84
 * @property int $r85
 * @property int $r86
 * @property int $r87
 * @property int $r88
 * @property int $r89
 * @property int $r9
 * @property-read string $ruleset
 * @property-read \App\Models\User $user
 * @property int $user_id
 */
class RankHistory extends Model
{
    protected $table = 'osu_user_performance_rank';

    public $timestamps = false;

    public function __construct(array $attributes = [])
    {
        if ($GLOBALS['cfg']['osu']['scores']['experimental_rank_as_default']) {
            $this->table = 'osu_user_performance_rank_exp';
        }

        parent::__construct($attributes);
    }

    public function currentStart(): BelongsTo
    {
        return $this->belongsTo(Count::class, 'current_start_name', 'name');
    }

    public function user()
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    public function getCurrentStartNameAttribute(): string
    {
        return Count::currentRankStartName($this->ruleset);
    }

    public function getDataAttribute()
    {
        $data = [];

        // The r$(count) may actually contain today's rank when the update
        // process is running so it should just be ignored and use the rank
        // from user statistics for the current rank value.
        $startOffset = ($this->currentStart?->count ?? 0) + 1;
        $endOffset = $startOffset + 88;

        $attributes = $this->attributes;
        for ($i = $startOffset; $i <= $endOffset; $i++) {
            $data[] = $attributes['r'.($i % 90)] ?? 0;
        }

        $userStatistics = $this->user->statistics($this->ruleset);
        $data[] = $userStatistics?->globalRank() ?? 0;

        return $data;
    }

    public function getRulesetAttribute()
    {
        return Beatmap::modeStr($this->getRawAttribute('mode'));
    }

    /**
     * Get the difference between the user's current performance rank and their
     * performance rank as of 30 days ago.
     *
     * @return int|null `null` if rank history is not available at 30 days ago.
     */
    public function rankChangeSince30Days(): ?int
    {
        $data = $this->data;
        $currentRank = $data[89];
        $previousRank = $data[59];

        return $currentRank > 0 && $previousRank > 0
            ? $currentRank - $previousRank
            : null;
    }
}