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(in-package :sxcl)
(defun get-disco-info (comp to &optional from)
"Send an XEP-0030 disco#info request. Returns a promise that resolves with a list of supported features."
(attach
(with-iq (comp to :from from)
(cxml:with-element "query"
(cxml:attribute "xmlns" +disco-info-ns+)))
(lambda (results)
(let ((query-node (get-node-named results "query"))
(features '()))
(unless query-node
(error "Malformed disco#info response: no <query/>"))
(loop
for node across (child-elements query-node)
do (let ((name (dom:tag-name node)))
(when (equal name "feature")
(setf features (cons (dom:get-attribute node "var") features)))))
features))))
(defun get-disco-items (comp to &optional from)
"Send an XEP-0030 disco#items request. Returns a promise that resolves with an alist, mapping JIDs to names."
(attach
(with-iq (comp to :from from)
(cxml:with-element "query"
(cxml:attribute "xmlns" +disco-items-ns+)))
(lambda (results)
(let ((query-node (get-node-named results "query"))
(items '()))
(unless query-node
(error "Malformed disco#items response: no <query/>"))
(loop
for node across (child-elements query-node)
do (let ((name (dom:tag-name node)))
(when (equal name "item")
(setf items (cons
(cons (dom:get-attribute node "jid") (dom:get-attribute node "name"))
items)))))
items))))
(defmacro disco-identity (name type category)
`(cxml:with-element "identity"
,@(when name
`((cxml:attribute "name" ,name)))
(cxml:attribute "type" ,type)
(cxml:attribute "category" ,category)))
(defmacro disco-feature (feature)
`(cxml:with-element "feature"
(cxml:attribute "var" ,feature)))