forge

;; title: ForgeQX
;; version:
;; summary:
;; description:

;; Constants
(define-constant platform-admin tx-sender)
(define-constant err-admin-only (err u100))
(define-constant err-resource-not-found (err u101))
(define-constant err-permission-denied (err u102))
(define-constant err-invalid-parameters (err u103))
(define-constant err-pricing-error (err u104))
(define-constant max-character-level u100)
(define-constant max-character-experience u10000)
(define-constant max-item-metadata-length u256)
(define-constant max-batch-operation-size u10)

;;;;;;; Data Variables ;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 

(define-data-var total-item-count uint u0)

;;;;; Read-only Functions;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;; 
;; Get item details
(define-read-only (get-item-details (item-id uint))
  (if (<= item-id (var-get total-item-count))
    (map-get? game-items { item-id: item-id })
    none
  )
)

;; Get marketplace listing details
(define-read-only (get-marketplace-listing (item-id uint))
  (map-get? marketplace-item-listings { item-id: item-id })
)

;; Get character progression
(define-read-only (get-character-progression (character principal))
  (map-get? character-progression { character: character })
)

;; Get total items created
(define-read-only (get-total-items)
  (var-get total-item-count)
)

;; Map definitions
(define-map game-items
  { item-id: uint }
  {
    owner: principal,
    item-uri: (string-utf8 256),
    can-trade: bool,
  }
)

(define-map item-market-values
  { item-id: uint }
  { price: uint }
)

(define-map character-progression
  { character: principal }
  {
    experience: uint,
    level: uint,
  }
)

(define-map marketplace-item-listings
  { item-id: uint }
  {
    seller: principal,
    price: uint,
    listing-timestamp: uint,
  }
)

;;;;;; Private Functions ;;;;;;

;; Validate game item exists and return item data
(define-private (validate-and-fetch-item (item-id uint))
  (let ((item (map-get? game-items { item-id: item-id })))
    (asserts!
      (and
        (is-some item)
        (<= item-id (var-get total-item-count))
      )
      err-resource-not-found
    )
    (ok (unwrap-panic item))
  )
)

;; Validate item metadata URI length
(define-private (is-valid-item-uri (uri (string-utf8 256)))
  (let ((uri-length (len uri)))
    (and
      (> uri-length u0)
      (<= uri-length max-item-metadata-length)
    )
  )
)

;; Helper function for batch item creation
(define-private (create-single-item
    (uri (string-utf8 256))
    (can-trade bool)
  )
  (let ((item-id (+ (var-get total-item-count) u1)))
    (asserts! (is-valid-item-uri uri) err-invalid-parameters)
    (map-set game-items { item-id: item-id } {
      owner: platform-admin,
      item-uri: uri,
      can-trade: can-trade,
    })
    (var-set total-item-count item-id)
    (ok item-id)
  )
)

;;;;; Public Functions ;;;;;;;

;; Batch Create new game items
(define-public (batch-create-items
    (item-uris (list 10 (string-utf8 256)))
    (tradable-flags (list 10 bool))
  )
  (begin
    (asserts! (is-eq tx-sender platform-admin) err-admin-only)
    (asserts!
      (and
        (> (len item-uris) u0)
        (<= (len item-uris) max-batch-operation-size)
        (is-eq (len item-uris) (len tradable-flags))
      )
      err-invalid-parameters
    )
    (let ((created-items (map create-single-item item-uris tradable-flags)))
      (ok created-items)
    )
  )
)

;; Batch Transfer game items
(define-public (batch-transfer-items
    (item-ids (list 10 uint))
    (recipients (list 10 principal))
  )
  (begin
    (asserts!
      (and
        (> (len item-ids) u0)
        (<= (len item-ids) max-batch-operation-size)
        (is-eq (len item-ids) (len recipients))
      )
      err-invalid-parameters
    )
    (let ((transfers (map transfer-single-item item-ids recipients)))
      (ok transfers)
    )
  )
)

;; Helper function for batch item transfer
(define-private (transfer-single-item
    (item-id uint)
    (recipient principal)
  )
  (let ((item (unwrap-panic (validate-and-fetch-item item-id))))
    (asserts!
      (and
        (is-eq (get owner item) tx-sender)
        (get can-trade item)
        (not (is-eq recipient tx-sender))
      )
      err-permission-denied
    )
    (map-set game-items { item-id: item-id } {
      owner: recipient,
      item-uri: (get item-uri item),
      can-trade: (get can-trade item),
    })
    (ok true)
  )
)

;; Create single game item
(define-public (create-item
    (item-uri (string-utf8 256))
    (can-trade bool)
  )
  (let ((item-id (+ (var-get total-item-count) u1)))
    (asserts! (is-eq tx-sender platform-admin) err-admin-only)
    (asserts! (is-valid-item-uri item-uri) err-invalid-parameters)
    (map-set game-items { item-id: item-id } {
      owner: tx-sender,
      item-uri: item-uri,
      can-trade: can-trade,
    })
    (var-set total-item-count item-id)
    (ok item-id)
  )
)

;; Transfer item ownership
(define-public (transfer-item
    (item-id uint)
    (recipient principal)
  )
  (begin
    (asserts! (<= item-id (var-get total-item-count)) err-invalid-parameters)
    (let ((item (try! (validate-and-fetch-item item-id))))
      (asserts!
        (and
          (is-eq (get owner item) tx-sender)
          (get can-trade item)
          (not (is-eq recipient tx-sender))
        )
        err-permission-denied
      )
      (map-set game-items { item-id: item-id } {
        owner: recipient,
        item-uri: (get item-uri item),
        can-trade: (get can-trade item),
      })
      (ok true)
    )
  )
)