<?php

namespace App\Models;

use Carbon\Carbon;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Database\Eloquent\Relations\HasMany;

use function now;

class Audition extends Model
{
    use HasFactory;

    protected $guarded = [];

    protected $rankedEntries = null;

    protected static $completeAuditions = null;

    protected $fully_scored; // Set by TabulationService

    protected $scored_entries_count; //Set by TabulationService

    public static function deadlineNotPast()
    {
        return Audition::where('entry_deadline', '>=', now())->get();
    }

    public function event(): BelongsTo
    {
        return $this->belongsTo(Event::class);
    }

    public function entries(): HasMany
    {
        return $this->hasMany(Entry::class);
    }

    public function room(): BelongsTo
    {
        return $this->belongsTo(Room::class);
    }

    public function scoringGuide(): BelongsTo
    {
        return $this->belongsTo(ScoringGuide::class);
    }

    public function dislpay_fee(): string
    {
        return '$'.number_format($this->entry_fee / 100, 2);
    }

    public function has_no_draw(): bool
    {
        // return true if all of my entries have a null draw_number
        //return $this->entries->every(fn($entry) => is_null($entry->draw_number));
        // return $this->entries()->whereNotNull('draw_number')->doesntExist();
        if ($this->entries->count() == 0) {
            return false;
        }
        if ($this->relationLoaded('entries')) {
            return $this->entries->every(function ($entry) {
                return is_null($entry->draw_number);
            });
        } else {
            return $this->entries()->whereNotNull('draw_number')->doesntExist();
        }

    }

    public function has_complete_draw(): bool
    {
        // return true if all of my entries have a draw_number
        // return $this->entries->every(fn($entry) => !is_null($entry->draw_number));
        // return $this->entries()->whereNull('draw_number')->doesntExist();
        if ($this->entries->count() == 0) {
            return false;
        }
        if ($this->relationLoaded('entries')) {
            return $this->entries->every(function ($entry) {
                return ! is_null($entry->draw_number);
            });
        } else {
            return $this->entries()->whereNull('draw_number')->doesntExist();
        }
    }

    public function has_partial_draw(): bool
    {
        if ($this->entries->count() == 0) {
            return false;
        }
        // return true I have at least one entry with a null draw number AND at least one entry with a non-null draw number
        //return $this->entries->contains(fn($entry) => is_null($entry->draw_number)) && $this->entries->contains(fn($entry) => !is_null($entry->draw_number));

        //$hasNull = $this->entries()->whereNull('draw_number')->exists();
        //$hasNotNull = $this->entries()->whereNotNull('draw_number')->exists();
        //return $hasNull && $hasNotNull;

        if ($this->relationLoaded('entries')) {
            $hasNull = $this->entries->contains(function ($entry) {
                return is_null($entry->draw_number);
            });

            $hasNotNull = $this->entries->contains(function ($entry) {
                return ! is_null($entry->draw_number);
            });

            return $hasNull && $hasNotNull;
        } else {
            $hasNull = $this->entries()->whereNull('draw_number')->exists();
            $hasNotNull = $this->entries()->whereNotNull('draw_number')->exists();

            return $hasNull && $hasNotNull;
        }
    }

    public function runDraw(): null
    {
        $entries = $this->entries->shuffle();

        foreach ($entries as $index => $entry) {
            $entry->update(['draw_number' => $index + 1]);
            $entry->save();
        }

        return null;
        // TODO move all draw functions to a DrawService
    }

    /**
     * @return BelongsToMany|\App\Models\User[]
     */
    public function judges(): array|BelongsToMany
    {
        return $this->belongsToMany(
            User::class, // The related model
            'room_user', // The intermediate table
            'room_id', // The foreign key on the intermediate table
            'user_id', // The related key on the intermediate table
            'room_id', // The local key
            'id' // The local ke
        );
    }

    /**
     * Ensures judges_count property is always available
     */
    public function getJudgesCountAttribute()
    {
        if (! isset($this->attributes['judges_count'])) {
            $this->attributes['judges_count'] = $this->judges()->count();
        }

        return $this->attributes['judges_count'];
    }

    public function flags(): HasMany
    {
        return $this->hasMany(AuditionFlag::class);
    }

    public function hasFlag($flag): bool
    {
        // return true if any flag in $this->flags has a flag_name of declined without making another db query if flags are loaded
        return $this->flags->contains('flag_name', $flag);
    }

    public function addFlag($flag): void
    {
        if ($this->hasFlag($flag)) {
            return;
        }

        $this->flags()->create(['flag_name' => $flag]);
    }

    public function removeFlag($flag): void
    {
        // remove related auditionFlag where flag_name = $flag
        $this->flags()->where('flag_name', $flag)->delete();
    }

    public function scopeOpen(Builder $query): void
    {
        $query->where('entry_deadline', '>=', Carbon::now());
    }
}