First commit

app/Models/Document.php

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+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\HasOne;
+use Illuminate\Database\Eloquent\Builder;
+
+class Document extends Model
+{
+    use SoftDeletes;
+
+    protected $fillable = [
+        'category_id',
+        'title',
+        'description',
+        'status',
+        'is_active',
+        'effective_date',
+        'expiry_date',
+        'tags',
+        'language',
+        'created_by',
+        'updated_by',
+    ];
+
+    protected $casts = [
+        'is_active'      => 'boolean',
+        'effective_date' => 'date',
+        'expiry_date'    => 'date',
+        'tags'           => 'array',
+    ];
+
+    // Status constants untuk kejelasan
+    const STATUS_DRAFT      = 'draft';
+    const STATUS_PROCESSING = 'processing';
+    const STATUS_ACTIVE     = 'active';
+    const STATUS_INACTIVE   = 'inactive';
+    const STATUS_FAILED     = 'failed';
+
+    // === Relationships ===
+
+    public function category(): BelongsTo
+    {
+        return $this->belongsTo(Category::class);
+    }
+
+    public function versions(): HasMany
+    {
+        return $this->hasMany(DocumentVersion::class)->orderBy('version_number');
+    }
+
+    public function currentVersion(): HasOne
+    {
+        return $this->hasOne(DocumentVersion::class)->where('is_current', true);
+    }
+
+    public function chunks(): HasMany
+    {
+        return $this->hasMany(DocumentChunk::class);
+    }
+
+    public function creator(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'created_by');
+    }
+
+    public function updater(): BelongsTo
+    {
+        return $this->belongsTo(User::class, 'updated_by');
+    }
+
+    // === Scopes ===
+
+    public function scopeActive(Builder $query): Builder
+    {
+        return $query->where('is_active', true)->where('status', self::STATUS_ACTIVE);
+    }
+
+    public function scopeByCategory(Builder $query, int $categoryId): Builder
+    {
+        return $query->where('category_id', $categoryId);
+    }
+
+    // === Helpers ===
+
+    public function getLatestVersionNumber(): int
+    {
+        return $this->versions()->max('version_number') ?? 0;
+    }
+
+    public function isProcessing(): bool
+    {
+        return $this->status === self::STATUS_PROCESSING;
+    }
+}