Added quiz features

app/Models/PvpMatch.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class PvpMatch extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'status',
+        'started_at',
+        'ended_at',
+        'winner_id',
+    ];
+
+    protected $casts = [
+        'started_at' => 'datetime',
+        'ended_at' => 'datetime',
+    ];
+
+    // The two players in this match
+    public function players()
+    {
+        return $this->hasMany(PvpMatchPlayer::class, 'pvp_match_id');
+    }
+
+    // All answers submitted in this match
+    public function answers()
+    {
+        return $this->hasMany(PvpMatchAnswer::class, 'pvp_match_id');
+    }
+
+    // The 5 random questions assigned to this match via pivot table
+    public function questions()
+    {
+        return $this->belongsToMany(Question::class, 'pvp_match_questions', 'pvp_match_id', 'question_id');
+    }
+
+    // The user who won
+    public function winner()
+    {
+        return $this->belongsTo(User::class, 'winner_id');
+    }
+}

app/Models/PvpMatchAnswer.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class PvpMatchAnswer extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'pvp_match_id',
+        'user_id',
+        'question_id',
+        'selected_option_id',
+        'is_correct',
+        'time_taken',
+        'points_earned',
+    ];
+
+    protected $casts = [
+        'is_correct' => 'boolean',
+        'time_taken' => 'float',
+        'points_earned' => 'float',
+    ];
+
+    public function match()
+    {
+        return $this->belongsTo(PvpMatch::class, 'pvp_match_id');
+    }
+
+    public function user()
+    {
+        return $this->belongsTo(User::class, 'user_id');
+    }
+
+    public function question()
+    {
+        return $this->belongsTo(Question::class, 'question_id');
+    }
+
+    public function selectedOption()
+    {
+        return $this->belongsTo(QuestionOption::class, 'selected_option_id');
+    }
+}

app/Models/PvpMatchPlayer.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class PvpMatchPlayer extends Model
+{
+    use HasFactory;
+
+    protected $fillable = [
+        'pvp_match_id',
+        'user_id',
+        'score',
+    ];
+
+    protected $casts = [
+        'score' => 'float',
+    ];
+
+    public function match()
+    {
+        return $this->belongsTo(PvpMatch::class, 'pvp_match_id');
+    }
+
+    public function user()
+    {
+        return $this->belongsTo(User::class, 'user_id');
+    }
+}