Donut Auction

Quality of Life & Marketplace Expansion Update

Feature 1 — Permission-Based Auction Limits

Configurable permission-based auction limits with highest-permission-wins resolution.

New permissions:

• donutauction.limit.5 (default: true)
• donutauction.limit.10
• donutauction.limit.25
• donutauction.limit.50
• donutauction.limit.100
• donutauction.limit.unlimited (-1)

New command: /ah limit — displays your current limit, active listings, and remaining slots.

Config:

auction-limits:
  enabled: true
  default-limit: 5
  permissions:
    donutauction.limit.10: 10
    donutauction.limit.25: 25
    donutauction.limit.50: 50
    donutauction.limit.100: 100
    donutauction.limit.unlimited: -1

Feature 2 — Preserve Original Item Lore

New configurable lore system that preserves original item lore from custom item plugins.

Lore modes:

• APPEND — Adds auction info below existing lore (default)
• REPLACE — Replaces lore entirely (legacy behavior)
• DISABLED — Does not modify lore at all

Config:

auction-lore:
  mode: APPEND
  separator: true

Compatible with: MMOItems, Oraxen, ItemsAdder, EcoItems, ExecutableItems, MythicMobs, and any custom item plugin using ItemMeta/NBT.

Feature 3 — Fast Buy System

Instant purchase mode that skips the confirmation GUI.

New permission: donutauction.fastbuy

New command: /ah fastbuy — toggles fast buy mode.

Config:

fast-buy:
  enabled: true
  default-state: false
  require-permission: true

Behavior:

• Normal: Click item → Confirm Purchase → Purchase Complete
• Fast Buy: Click item → Purchase Complete
• Setting persists across reconnects and server restarts.

Feature 4 — Fast Sell System

Instant listing mode that uses stored settings.

New permission: donutauction.fastsell

New command: /ah fastsell — toggles fast sell mode.

Config:

fast-sell:
  enabled: true
  default-state: false
  require-permission: true

Behavior:

• Normal: /ah sell <price> → Sell GUI for duration/category selection
• Fast Sell: /ah sell <price> → Listed immediately using last settings
• Automatically remembers last duration, category, and price.

Feature 5 — Shulker Box Support

Full shulker box support with content preview.

Config:

shulker-support:
  enabled: true
  preview-contents: true

Features:

• Preserves all contents, NBT, names, lore, enchantments, colors, and custom metadata.
• Right-click any shulker box in the auction to preview its contents.
• Read-only preview GUI prevents extraction while listed.
• No duplication exploits.

Feature 6 — Modrinth Update Checker

Modern update checker using the Modrinth API.

Config:

update-checker:
  enabled: true
  notify-console: true
  notify-admins: true
  check-interval-hours: 12

New permission: donutauction.update.notify

Behavior:

• Checks asynchronously, never blocks startup.
• Caches results, handles rate limits and API downtime.
• Notifies console on enable if update available.
• Notifies admins on join if update available.

Feature 7 — Auction Slot Expansion

Additional monetization-friendly slot permissions.

New permissions:

• donutauction.slots.10
• donutauction.slots.25
• donutauction.slots.50
• donutauction.slots.100

Config:

auction-slots:
  enabled: true
  permissions:
    donutauction.slots.10: 10
    donutauction.slots.25: 25
    donutauction.slots.50: 50
    donutauction.slots.100: 100

Performance Improvements

• All database operations now use the plugin's named async executor instead of the default ForkJoinPool.
• Operation lock cleanup prevents memory leaks from accumulated auction locks.
• Fire-and-forget DB updates now include exception logging.
• Search performance optimized with cached plain-text names.

Security & Stability Fixes

• CRITICAL: Fixed item duplication exploit where server crash during purchase could duplicate items.
• CRITICAL: Fixed item duplication exploit where server crash during cancellation could duplicate items.
• CRITICAL: Fixed item duplication exploit where server crash during item collection could duplicate items.
• All inventory/economy actions now happen after database persistence succeeds.
• Failed purchases now refund money automatically.
• Failed cancellations now restore auction state automatically.
• Failed collections now restore auction state automatically.

New Permissions Summary

New Commands Summary

Migration Notes from 1.1.0 → 1.2.0

• Existing configs are safely updated with new defaults on startup.
• A new player_preferences table is created automatically for fast buy/sell settings.
• Existing donutcore.* permissions continue to work alongside new donutauction.* permissions.
• Existing auction data is fully compatible — no data migration required.
• The lore system defaults to APPEND mode. Set to REPLACE to preserve 1.1.0 behavior.