# BPC_DocumentArchiveSystem — Document Archive System

**Parent Class:** `ActorComponent`
**Category:** Inventory
**Target UE Version:** 5.5–5.7
**Build Phase:** 3 — Inventory

## 1. Overview

`BPC_DocumentArchiveSystem` manages collected documents — notes, letters, audio logs, data files. Tracks read/unread status, organizes by category, and provides query functions for UI and narrative systems.

## 2. Variables

| Variable | Type | Description |
|----------|------|-------------|
| `CollectedDocuments` | `TArray<S_DocumentEntry>` | All collected documents |
| `DocumentCategories` | `TArray<E_DocumentCategory>` | Notes, Letters, Audio, Data, Photos |
| `bShowUnreadBadge` | `bool` | Highlight unread documents |
| `UnreadCount` | `int32` | Total unread documents |

## 3. Functions

| Function | Description |
|----------|-------------|
| `AddDocument` | Adds a document to the archive |
| `MarkAsRead` | Marks a document as read |
| `MarkAllAsRead` | Marks all as read |
| `GetDocumentsByCategory` | Returns filtered list |
| `GetUnreadCount` | Returns unread count |
| `HasDocument` | Checks if document is collected |

## 4. Event Dispatchers

| Dispatcher | Payload | Description |
|------------|---------|-------------|
| `OnDocumentCollected` | `S_DocumentEntry Document` | New document added |
| `OnDocumentRead` | `FGuid DocumentID` | Document marked read |
| `OnAllDocumentsRead` | — | All documents read |

## 5. Dependencies

| System | Relationship |
|--------|--------------|
| `BPC_InventorySystem` | Documents as inventory items |
| `WBP_JournalDocumentViewer` | UI for viewing documents |
| `BPC_LoreUnlockSystem` | Lore document triggers |

## 6. Reuse Notes
- Documents are inventory items with `E_ItemCategory = Document`