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|
# (defpackage :cl-bbs/views
(:use :cl)
(:import-from :cl-who
#:with-html-output-to-string
#:htm
#:str
#:esc
#:fmt)
(:import-from :cl-bbs/storage
#:is-board-locked)
(:export #:render-index
#:render-list
#:render-thread
#:render-preferences
#:render-moderation
#:render-error-page
#:render-search-results
#:render-playground
#:preferences
#:make-preferences
#:preferences-theme
#:preferences-syntax-theme
#:preferences-default-board
#:preferences-search-hide-input
#:preferences-search-local-only
#:preferences-search-position
#:*preferences*))
(in-package :cl-bbs/views)
(defstruct preferences
(theme "dark")
(syntax-theme "simple")
(default-board "")
(search-hide-input "no")
(search-local-only "no")
(search-position "top"))
(defvar *preferences* (make-preferences))
(defun get-git-commit-hash ()
"Gets the git commit hash from environmental dynamics (APP_COMMIT_HASH) with a fallback to uiop:run-program."
(let ((env-hash (uiop:getenv "APP_COMMIT_HASH")))
(if (and env-hash (string/= env-hash ""))
env-hash
(or (handler-case
(string-trim '(#\Space #\Tab #\Newline #\Return)
(uiop:run-program '("git" "rev-parse" "--short" "HEAD")
:output :string))
(error () nil))
"unknown"))))
(defun render-footer-html (&optional board)
"Renders the common footer HTML with cl-bbs version hash and a GitHub link."
(let ((hash (get-git-commit-hash)))
(cl-who:with-html-output-to-string (s nil :indent t)
(:p :class "footer"
"cl-bbs version:"
(:a :href (format nil "https://github.com/ryukinix/cl-bbs/commit/~a" hash)
:target "_blank"
(cl-who:esc hash))
" - "
(:a :href (if board (format nil "/~a/rss" board) "/rss")
:target "_blank"
"RSS Feed")))))
(defun render-board-name (board)
(cl-who:with-html-output-to-string (s nil :indent t)
(:h1
(cl-who:esc
(if (is-board-locked board)
(concatenate 'string board " 🔒")
board)))))
(defun get-hash-hue (id-val)
(let ((id-num (cond ((integerp id-val) id-val)
((stringp id-val) (or (handler-case (parse-integer id-val :junk-allowed t)
(error () nil))
0))
(t 0))))
(mod (* id-num 137) 360)))
(defmacro layout (title class prefs &body body)
`(cl-who:with-html-output-to-string (s nil :prologue "<!DOCTYPE html>" :indent t)
(:html
(:head
(:meta :charset "utf-8")
(:meta :name "viewport" :content "width=device-width, initial-scale=1.0")
(:title (cl-who:esc ,title))
(:link :rel "manifest" :href "/manifest.json")
(:link :rel "icon" :href "/static/favicon.ico" :type "image/png")
(:link :rel "stylesheet"
:href (format nil "/static/styles/themes/~a.css" (or (preferences-theme ,prefs) "default"))
:type "text/css")
(:link :rel "stylesheet"
:href (format nil "/static/styles/syntax/~a.css" (or (preferences-syntax-theme ,prefs) "simple"))
:type "text/css")
(:script "if ('serviceWorker' in navigator) {
window.addEventListener('load', () => {
navigator.serviceWorker.register('/sw.js');
});
}")
(:script "
function validatePostForm(form, errorId) {
const content = form.epistula.value.trim();
const errorEl = document.getElementById(errorId);
if (!content) {
if (errorEl) {
errorEl.textContent = 'Post body cannot be empty!';
errorEl.style.display = 'block';
} else {
alert('Post body cannot be empty!');
}
return false;
}
if (errorEl) {
errorEl.style.display = 'none';
}
return true;
}
document.addEventListener('DOMContentLoaded', function() {
document.querySelectorAll('textarea[name=\"epistula\"]').forEach(function(ta) {
ta.addEventListener('keydown', function(e) {
if (e.ctrlKey && e.key === 'Enter') {
e.preventDefault();
ta.form.requestSubmit();
}
});
});
});
")
(:script :src "/static/jscl-snippets.js" :defer t))
(:body :class ,class
(cl-who:str (render-boards-header))
(:hr)
(cl-who:str (progn ,@body))
(when (show-search-at-bottom-p)
(cl-who:htm
(:hr)
(cl-who:str (render-search-form))))))))
(defun render-error-page (error-message &optional (prefs *preferences*))
"Renders an HTML error page displaying the given ERROR-MESSAGE, using the specified layout PREFS."
(layout "Error - cl-bbs" "error-page" prefs
(cl-who:with-html-output-to-string (s nil :indent t)
(:h1 "Error")
(:hr)
(:div :class "error-container"
(:p :class "error-title" (cl-who:esc error-message))
(:p "We were unable to process your post because it does not meet the validation requirements.")
(:p (:button :class "error-back-button" :onclick "history.back();" "← Go Back and Edit Post")))
(:hr)
(cl-who:str (render-footer-html)))))
(defun board-view-p (path)
"Checks if the given PATH represents a board-specific view."
(and path
(string/= path "/")
(string/= path "/index.html")
(not (uiop:string-prefix-p "/search" path))
(not (uiop:string-prefix-p "/admin" path))
(not (uiop:string-prefix-p "/about" path))
(not (uiop:string-prefix-p "/sw.js" path))
(not (uiop:string-prefix-p "/manifest.json" path))
(not (uiop:string-prefix-p "/playground" path))))
(defun get-current-board-from-path (path)
"Extracts the board name from the request PATH."
(when (and path (string/= path "") (char= (char path 0) #\/))
(let ((parts (cl-ppcre:split "/" path)))
(when (>= (length parts) 2)
(let ((b (second parts)))
(and (string/= b "") b))))))
(defun show-search-at-top-p ()
"Determines whether the search form should be rendered at the top header."
(let* ((env (and (boundp 'ningle:*request*) ningle:*request* (lack.request:request-env ningle:*request*)))
(path (and env (getf env :path-info)))
(is-board (board-view-p path)))
(and (not (and is-board (string= (preferences-search-hide-input *preferences*) "yes")))
(string= (preferences-search-position *preferences*) "top"))))
(defun show-search-at-bottom-p ()
"Determines whether the search form should be rendered at the bottom of the page."
(and (not (string= (preferences-search-hide-input *preferences*) "yes"))
(string= (preferences-search-position *preferences*) "bottom")))
(defun render-search-form ()
"Renders the search form as a standalone block, with board filter if local search is configured."
(let* ((env (and (boundp 'ningle:*request*) ningle:*request* (lack.request:request-env ningle:*request*)))
(path (and env (getf env :path-info)))
(board (and (board-view-p path) (get-current-board-from-path path))))
(cl-who:with-html-output-to-string (s nil :indent t)
(:form :action "/search" :method "GET" :style "margin: 1em 2%; display: inline-flex;"
(when (and (string= (preferences-search-local-only *preferences*) "yes") board)
(cl-who:htm (:input :type "hidden" :name "board" :value board)))
(:input :type "text" :name "q" :placeholder "Search posts..."
:style "padding: 2px 5px; font-size: 0.85em; margin-right: 5px;")
(:input :type "submit" :value "Search")))))
(defun render-boards-header ()
(let* ((sexp-dir (merge-pathnames "sexp/" cl-bbs/storage:*base-dir*))
(paths (and (probe-file sexp-dir) (uiop:subdirectories sexp-dir)))
(boards (sort (mapcar (lambda (path)
(car (last (pathname-directory path))))
paths)
#'string<))
(env (and (boundp 'ningle:*request*) ningle:*request* (lack.request:request-env ningle:*request*)))
(path (and env (getf env :path-info)))
(board (and (board-view-p path) (get-current-board-from-path path))))
(cl-who:with-html-output-to-string (s nil :indent t)
(:div :style "display: flex; justify-content: space-between; align-items: center; margin: 0.5em 2% 1em 2%;"
(:p :class "boards" :style "font-size: 0.9em; margin: 0;"
"[ "
(loop for board in boards
for i from 0
unless (zerop i)
do (cl-who:str " | ")
do (cl-who:htm (:a :href (format nil "/~a/" board) (cl-who:esc board))))
" ]")
(when (show-search-at-top-p)
(cl-who:htm
(:form :action "/search" :method "GET" :style "margin: 0; display: inline-flex;"
(when (and (string= (preferences-search-local-only *preferences*) "yes") board)
(cl-who:htm (:input :type "hidden" :name "board" :value board)))
(:input :type "text" :name "q" :placeholder "Search posts..."
:style "padding: 2px 5px; font-size: 0.85em; margin-right: 5px;")
(:input :type "submit" :value "Search"))))))))
(defun render-menu (board selected)
(cl-who:with-html-output-to-string (s nil :indent t)
(:p :class "nav"
(if (string= selected "front")
(cl-who:str "front")
(cl-who:htm (:a :href (format nil "/~a" board) "front")))
" - "
(if (string= selected "list")
(cl-who:str "list")
(cl-who:htm (:a :href (format nil "/~a/list" board) "list")))
" - "
(if (string= selected "front")
(cl-who:htm (:a :href "#newthread" "new"))
(cl-who:htm (:a :href (format nil "/~a#newthread" board) "new")))
" - "
(:a :href (format nil "/~a/preferences" board) "preferences")
" - "
(if (string= selected "playground")
(cl-who:str "λ")
(cl-who:htm (:a :href (format nil "/~a/playground" board) "λ")))
" - "
(:a :href "/index.html" "?"))))
(defun render-thread-form (board)
(cl-who:with-html-output-to-string (s nil :indent t)
(:div :class "newthread-form"
(:h2 :id "newthread" "New thread")
(:p :id "newthread-error" :style "color: red; font-weight: bold; display: none;")
(:form :action (format nil "/~a/post" board)
:method "POST"
:onsubmit "return validatePostForm(this, 'newthread-error');"
(:p (:input :type "text" :name "titulus" :size 35 :placeholder "Headline"))
(:p (:textarea :name "epistula"
:rows 5
:cols 50
:placeholder "Message"))
(:p (:input :type "text" :name "name" :style "display:none")
(:input :type "text" :name "message" :style "display:none")
(:input :type "submit" :value "Post"))))))
(defun unescape-html (string)
(let ((s string))
(setf s (cl-ppcre:regex-replace-all """ s "\""))
(setf s (cl-ppcre:regex-replace-all "<" s "<"))
(setf s (cl-ppcre:regex-replace-all ">" s ">"))
(setf s (cl-ppcre:regex-replace-all "'" s "'"))
(setf s (cl-ppcre:regex-replace-all "'" s "'"))
(setf s (cl-ppcre:regex-replace-all "'" s "'"))
(setf s (cl-ppcre:regex-replace-all "&#[xX]([0-9a-fA-F]+);" s
(lambda (match-string hex-str)
(declare (ignore match-string))
(string (code-char (parse-integer hex-str :radix 16))))
:simple-calls t))
(setf s (cl-ppcre:regex-replace-all "&#([0-9]+);" s
(lambda (match-string dec-str)
(declare (ignore match-string))
(string (code-char (parse-integer dec-str :radix 10))))
:simple-calls t))
(setf s (cl-ppcre:regex-replace-all "&" s "&"))
s))
(defun format-text (text &optional thread-id)
(let* ((escaped (cl-who:escape-string text))
;; 1. Extract code blocks
(code-blocks '())
(code-block-placeholder-format "<!--CODEBLOCK-PLACEHOLDER-~a-->")
(placeholder-idx 0)
(processed escaped))
(setf processed
(cl-ppcre:regex-replace-all
"(?s)```\\n*(.*?)\\n*```"
processed
(lambda (match-string &optional content &rest others)
(declare (ignore match-string others))
(let ((placeholder (format nil code-block-placeholder-format (incf placeholder-idx))))
(push (cons placeholder (or content "")) code-blocks)
placeholder))
:simple-calls t))
(setf processed
(cl-ppcre:regex-replace-all
"(?m)^>(?!>)\\s*(.*?)$"
processed
"<blockquote>\\1</blockquote>"))
(setf processed
(cl-ppcre:regex-replace-all
"\\*\\*(.*?)\\*\\*"
processed
"<b>\\1</b>"))
(setf processed
(cl-ppcre:regex-replace-all
"__(.*?)__"
processed
"<i>\\1</i>"))
(setf processed
(cl-ppcre:regex-replace-all
"`([^`]+)`"
processed
"<code>\\1</code>"))
(setf processed
(cl-ppcre:regex-replace-all
"~~(.*?)~~"
processed
"<del>\\1</del>"))
(setf processed
(cl-ppcre:regex-replace-all
">>(\\d+)"
processed
(lambda (match-string &optional num &rest others)
(declare (ignore match-string others))
(let ((num-val (or num "")))
(if thread-id
(format nil "<a href=\"#t~ap~a\">>>~a</a>" thread-id num-val num-val)
(format nil "<a href=\"#t~a\">>>~a</a>" num-val num-val))))
:simple-calls t))
(setf processed
(cl-ppcre:regex-replace-all
"https?://[\\w\\-\\.\\/\\?\\=\\&\\%#\\+:\\;]+"
processed
"<a href=\"\\&\" target=\"_blank\">\\&</a>"))
(setf processed
(cl-ppcre:regex-replace-all
(concatenate 'string
"<a href=\"(https?://[\\w\\-\\.\\/\\?\\=\\&\\%#\\+:\\;]+"
"\\.(?:png|jpg|jpeg|gif|webp|bmp))\" "
"target=\"_blank\">.*?</a>")
processed
(concatenate 'string
"<br /><a href=\"\\1\" target=\"_blank\">"
"<img src=\"\\1\" style=\"max-width:300px; "
"max-height:300px; display:block; margin:0.5em 0;\" "
"alt=\"preview\" /></a><br />")))
(setf processed
(cl-ppcre:regex-replace-all
"image\\+<a href=\"(https?://[\\w\\-\\.\\/\\?\\=\\&\\%#\\+:\\;]+)\" target=\"_blank\">.*?</a>"
processed
(concatenate 'string
"<br /><a href=\"\\1\" target=\"_blank\">"
"<img src=\"\\1\" style=\"max-width:300px; "
"max-height:300px; display:block; margin:0.5em 0;\" "
"alt=\"preview\" /></a><br />")))
(setf processed
(cl-ppcre:regex-replace-all
"\\r\\n"
processed
(string #\Newline)))
(setf processed
(cl-ppcre:regex-replace-all
"\\n\\n+"
processed
"</p><p>"))
(setf processed
(cl-ppcre:regex-replace-all
"\\n"
processed
"<br />"))
(setf processed (format nil "<p>~a</p>" processed))
(dolist (pair code-blocks)
(let ((placeholder (car pair))
(content (cdr pair)))
(setf processed
(cl-ppcre:regex-replace-all
placeholder
processed
(lambda (match-string &optional regs)
(declare (ignore match-string regs))
(multiple-value-bind (match-start match-end reg-starts reg-ends)
(cl-ppcre:scan "^(?i)(lisp|cl|common-lisp)\\r?\\n" content)
(declare (ignore reg-starts reg-ends))
(if match-start
(let* ((escaped-code (subseq content match-end))
(raw-code (unescape-html escaped-code))
(colorized-code (handler-case (colorize:html-colorization :common-lisp raw-code)
(error () (cl-who:escape-string raw-code)))))
;; Note: colorize already wraps the result in <span class="..."><span class="paren1">...
;; We wrap it in <pre class="lisp-code-block"> but keep a data-raw-code attribute
;; or just use content for JS execution. JSCL needs the raw text. To avoid JSCL trying
;; to parse HTML, we'll embed the raw code in a hidden div, or rely on JS `textContent`
;; which extracts raw text from nested HTML elements. `textContent` works well.
(format nil "</p><pre class=\"lisp-code-block\">~a</pre><p>" colorized-code))
(format nil "</p><pre>~a</pre><p>" content))))
:simple-calls t))))
(setf processed
(cl-ppcre:regex-replace-all
"<p>\\s*</p>"
processed
""))
processed))
(defun render-post-form (board thread-id)
(let ((error-id (format nil "reply-error-~a" thread-id)))
(cl-who:with-html-output-to-string (s nil :indent t)
(:p :id error-id :style "color: red; font-weight: bold; display: none;")
(:form :action (format nil "/~a/~a/post" board thread-id)
:method "POST"
:onsubmit (format nil "return validatePostForm(this, '~a');" error-id)
(:p (:textarea :name "epistula"
:rows 8
:cols 78
:placeholder "Message")
(:br)
(:input :type "text" :name "name" :class "name" :style "display:none")
(:input :type "text" :name "message" :class "message" :style "display:none")
(:input :type "submit" :value "Post"))))))
(defun render-frontpage-thread (board thread-data index &optional (prefs *preferences*))
(let* ((thread-id (car thread-data))
(props (cdr thread-data))
(headline (cdr (assoc 'cl-bbs/models:headline props)))
(posts (second (assoc 'cl-bbs/models:posts props)))
(next-post-number (if posts (1+ (reduce #'max posts :key #'car :initial-value 0)) 1))
(truncated (cdr (assoc 'cl-bbs/models:truncated props)))
(theme (preferences-theme prefs)))
(cl-who:with-html-output-to-string (s nil :indent t)
(:pre :class "jump"
(:a :id (format nil "d~a" index)
:href (if (= index 10) "#d1" (format nil "#d~a" (1+ index))) "↓")
(cl-who:str " "))
(let ((heading-style (if (string= theme "colored")
(format nil (concatenate 'string
"border-left: 5px solid hsl(~D, 80%, 45%); "
"padding-left: 10px; margin-left: 2%;")
(get-hash-hue thread-id))
"")))
(cl-who:htm
(:h2 :style heading-style
(:a :href (format nil "/~a/~a" board thread-id) (cl-who:esc headline)))))
(:dl
(let ((prev-id nil))
(dolist (post posts)
(let* ((post-id (car post))
(post-data (cdr post))
(content (cdr (assoc 'cl-bbs/models:content post-data)))
(date (cdr (assoc 'cl-bbs/models:date post-data))))
(when (and prev-id (> post-id (1+ prev-id)))
;; Instead of hard assumption based just on IDs, actually check via truncated list if
;; the missing IDs are meant to be rendered as collapsed (i.e. they actually exist in the background).
;; Find the maximum contiguous subsegment of truncated IDs bridging prev-id and post-id.
(let* ((missing-ids (loop for id from (1+ prev-id) to (1- post-id) collect id))
(actual-missing (if (listp truncated)
(remove-if-not (lambda (id) (member id truncated)) missing-ids)
missing-ids)))
(when (>= (length actual-missing) 2)
(let ((fst (car actual-missing))
(lst (car (last actual-missing))))
(cl-who:htm
(:dt :class "collapsed" :style "margin: 0.5em 2%; margin-left: 0; padding-left: 0;"
(:a :href (format nil "/~a/~a#t~ap~a" board thread-id thread-id fst)
(cl-who:str (format nil "~D" fst)))
(when (> lst fst)
(cl-who:htm
(cl-who:str "...")
(:a :href (format nil "/~a/~a#t~ap~a" board thread-id thread-id lst)
(cl-who:str (format nil "~D" lst)))))))))))
(setf prev-id post-id)
(let ((post-style (if (string= theme "colored")
(let ((hue (get-hash-hue post-id)))
(format nil (concatenate 'string
"background-color: hsl(~D, 85%, 96%); "
"border-left: 4px solid hsl(~D, 85%, 45%); "
"padding: 0.5em 1em; "
"margin: 0.3em 2% 1.2em 2%; "
"border-radius: 0 4px 4px 0;")
hue hue))
"")))
(cl-who:htm
(:dt :style "margin: 0.5em 2%; margin-left: 0; padding-left: 0;"
(:a :href (format nil "/~a/~a#t~ap~a" board thread-id thread-id post-id)
:id (format nil "t~ap~a" thread-id post-id)
(cl-who:str (format nil "~a" post-id)))
" "
(:samp (cl-who:esc date)))
(:dd :style post-style (cl-who:str (format-text content thread-id))))))))
(unless (is-board-locked board)
(cl-who:htm
(:dt :style "margin: 0.5em 2%; margin-left: 0; padding-left: 0;"
(:a :href (format nil "#t~ap~a" thread-id next-post-number)
:id (format nil "t~ap~a" thread-id next-post-number)
(cl-who:str (format nil "~a" next-post-number))))
(:dd (cl-who:str (render-post-form board thread-id))))))
(:hr))))
(defun render-index (board threads &optional (prefs *preferences*))
"Renders the board index (frontpage) HTML with the list of active THREADS
and the new thread form, using layout PREFS."
(layout (format nil "/~a/" board) nil prefs
(cl-who:with-html-output-to-string (s nil :indent t)
(cl-who:str (render-board-name board))
(cl-who:str (render-menu board "front"))
(:hr)
(loop for t-data in threads
for i from 1
do (cl-who:htm (cl-who:str (render-frontpage-thread board t-data i prefs))))
(unless (is-board-locked board)
(cl-who:htm (cl-who:str (render-thread-form board))))
(:hr)
(cl-who:str (render-footer-html board)))))
(defun render-list (board threads &optional (prefs *preferences*))
"Renders the board thread-list HTML page, showing all THREADS in tabular format, using layout PREFS."
(layout (format nil "/~a/" board) nil prefs
(cl-who:with-html-output-to-string (s nil :indent t)
(cl-who:str (render-board-name board))
(cl-who:str (render-menu board "list"))
(:hr)
(:table :summary "Thread list"
(:thead (:tr (:th "#") (:th "headline") (:th "posts") (:th "last update")))
(:tbody
(loop for t-data in threads
for i from 1
do (let* ((thread-id (car t-data))
(props (cdr t-data))
(headline (cdr (assoc 'cl-bbs/models:headline props)))
(messages (cdr (assoc 'cl-bbs/models:messages props)))
(date (cdr (assoc 'cl-bbs/models:date props))))
(cl-who:htm
(:tr (:td (cl-who:str (format nil "~a" i)))
(:td (:a :href (format nil "/~a/~a" board thread-id) (cl-who:esc headline)))
(:td (cl-who:str (format nil "~a" messages)))
(:td (:samp (cl-who:esc date)))))))))
(:hr)
(cl-who:str (render-footer-html board)))))
(defun render-thread (board thread-id thread-data &optional range-string (prefs *preferences*))
"Renders a single thread page HTML for THREAD-ID under BOARD with THREAD-DATA (comments),
optionally filtered by RANGE-STRING, using layout PREFS."
(let* ((theme (preferences-theme prefs))
(raw-thread (if (and (consp thread-data)
(consp (car thread-data))
(consp (caar thread-data)))
(car thread-data)
thread-data))
(headline (if (consp (car raw-thread))
(cdr (assoc 'cl-bbs/models:headline raw-thread))
(cdr (assoc 'cl-bbs/models:headline (list raw-thread)))))
(posts-assoc (if (consp (car raw-thread)) (assoc 'cl-bbs/models:posts raw-thread) (cadr thread-data)))
(posts-list (if (and posts-assoc (listp (cdr posts-assoc)) (not (keywordp (cdr posts-assoc))))
(if (listp (cadr posts-assoc)) (cadr posts-assoc) (cdr posts-assoc))
(cdr posts-assoc)))
(posts (if (listp (car posts-list)) posts-list (list posts-list)))
(next-post-number (if posts (1+ (reduce #'max posts :key #'car :initial-value 0)) 1))
(filter-func (if (and range-string (string/= range-string ""))
(let ((allowed-ids (make-hash-table :test #'eql)))
(dolist (part (cl-ppcre:split "," range-string))
(let ((subparts (cl-ppcre:split "-" part)))
(cond
((= (length subparts) 1)
(let ((id (parse-integer (first subparts) :junk-allowed t)))
(when id
(setf (gethash id allowed-ids) t))))
((= (length subparts) 2)
(let ((start (parse-integer (first subparts) :junk-allowed t))
(end (parse-integer (second subparts) :junk-allowed t)))
(when (and start end (<= start end))
(loop for id from start to end
do (setf (gethash id allowed-ids) t))))))))
(lambda (id) (gethash id allowed-ids)))
(lambda (id) (declare (ignore id)) t))))
(layout (format nil "/~a/" board) "thread" prefs
(cl-who:with-html-output-to-string (s nil :indent t)
(cl-who:str (render-board-name board))
(cl-who:str (render-menu board "thread"))
(:hr)
(let ((heading-style (if (string= theme "colored")
(format nil "border-left: 5px solid hsl(~D, 80%, 45%); padding-left: 10px;"
(get-hash-hue thread-id))
"")))
(cl-who:htm
(:h2 :style heading-style (cl-who:esc headline))))
(:dl
(loop for post in posts
for post-id = (car post)
for post-data = (cdr post)
for content = (cdr (assoc 'cl-bbs/models:content post-data))
for date = (cdr (assoc 'cl-bbs/models:date post-data))
when (funcall filter-func post-id)
do (let ((post-style (if (string= theme "colored")
(let ((hue (get-hash-hue post-id)))
(format nil (concatenate 'string
"background-color: hsl(~D, 85%, 96%); "
"border-left: 4px solid hsl(~D, 85%, 45%); "
"padding: 0.5em 1em; margin: 0.3em 0 1.2em 0; "
"border-radius: 0 4px 4px 0;")
hue hue))
"")))
(cl-who:htm
(:dt (:a :href (format nil "/~a/~a#t~ap~a" board thread-id thread-id post-id)
:id (format nil "t~ap~a" thread-id post-id)
(cl-who:str (format nil "~a" post-id)))
" "
(:samp (cl-who:esc date)))
(:dd :style post-style (cl-who:str (format-text content thread-id))))))
(unless (is-board-locked board)
(cl-who:htm
(:dt (:a :href (format nil "#t~ap~a" thread-id next-post-number)
:id (format nil "t~ap~a" thread-id next-post-number)
(cl-who:str (format nil "~a" next-post-number))))
(:dd (cl-who:str (render-post-form board thread-id))))))
(:hr)
(cl-who:str (render-footer-html board))))))
(defun render-preferences (board &optional (prefs *preferences*))
"Renders the board preferences HTML page, allowing users to choose a custom
stylesheet THEME, default-board and search configuration."
(let* ((sexp-dir (merge-pathnames "sexp/" cl-bbs/storage:*base-dir*))
(paths (and (probe-file sexp-dir) (uiop:subdirectories sexp-dir)))
(boards (sort (mapcar (lambda (path)
(car (last (pathname-directory path))))
paths)
#'string<))
(theme (preferences-theme prefs))
(syntax-theme (preferences-syntax-theme prefs))
(default-board (preferences-default-board prefs))
(search-hide-input (preferences-search-hide-input prefs))
(search-local-only (preferences-search-local-only prefs))
(search-position (preferences-search-position prefs)))
(layout (format nil "/~a/ - Preferences" board) "preferences" prefs
(cl-who:with-html-output-to-string (s nil :indent t)
(cl-who:str (render-board-name board))
(cl-who:str (render-menu board "preferences"))
(:hr)
(:h2 "Preferences")
(:form :action (format nil "/~a/preferences" board) :method "POST" :class "preferences-form"
(:div :style "margin-bottom: 2em;"
(:h3 :style "margin-bottom: 0.5em;" "Style Theme")
(:p :style "color: #555; font-size: 0.9em; margin-bottom: 0.8em;"
"Customize the look and feel of the textboard.")
(:div :class "theme-selector-container"
(dolist (item '("default" "dark" "no" "colored" "matrix"))
(cl-who:htm
(:label :class "theme-option-label" :style "margin-right: 15px;"
(:input :type "radio"
:name "theme"
:value item
:checked (and theme (string= theme item))
:onchange "updateThemePreview(this.value)")
(:span :class "theme-option-text" (cl-who:str item)))))))
(:div :style "margin-bottom: 2em;"
(:h3 :style "margin-bottom: 0.5em;" "Syntax Theme")
(:p :style "color: #555; font-size: 0.9em; margin-bottom: 0.8em;"
"Choose syntax highlighting color scheme for Lisp code.")
(:div :class "syntax-theme-selector-container"
(dolist (item '("simple" "colorful"))
(cl-who:htm
(:label :class "theme-option-label" :style "margin-right: 15px;"
(:input :type "radio"
:name "syntax_theme"
:value item
:checked (and syntax-theme (string= syntax-theme item)))
(:span :class "theme-option-text" (cl-who:str item)))))))
(:div :style "margin-bottom: 2em;"
(:h3 :style "margin-bottom: 0.5em;" "Default Board")
(:p :style "color: #555; font-size: 0.9em; margin-bottom: 0.8em;"
"Select the board you land on when visiting the root domain.")
(:div :class "board-selector-container"
(:select :name "default_board" :style "padding: 4px; font-size: 0.95em;"
(:option :value ""
:selected (or (null default-board) (string= default-board ""))
"None (Main Page)")
(dolist (item boards)
(cl-who:htm
(:option :value item
:selected (and default-board (string= default-board item))
(cl-who:str (format nil "/~a/" item))))))))
(:div :style "margin-bottom: 2em;"
(:h3 :style "margin-bottom: 0.5em;" "Search Settings")
(:p :style "color: #555; font-size: 0.9em; margin-bottom: 0.8em;"
"Configure how the search bar behaves on board indices and thread views.")
(:div :class "search-preferences-container" :style "line-height: 1.8em;"
(:div :style "margin-bottom: 0.8em;"
(:label :style "font-weight: bold;"
"Hide search input in board view: ")
(:br)
(:select :name "search_hide_input" :style "padding: 4px; font-size: 0.95em;"
(:option :value "no" :selected (string= search-hide-input "no") "No")
(:option :value "yes" :selected (string= search-hide-input "yes") "Yes")))
(:div :style "margin-bottom: 0.8em;"
(:label :style "font-weight: bold;"
"Only make local searches in the current board: ")
(:br)
(:select :name "search_local_only"
:style "padding: 4px; font-size: 0.95em;"
(:option :value "no"
:selected (string= search-local-only "no")
"No (Global)")
(:option :value "yes"
:selected (string= search-local-only "yes")
"Yes (Local)")))
(:div :style "margin-bottom: 0.8em;"
(:label :style "font-weight: bold;"
"Placement of search input: ")
(:br)
(:select :name "search_position"
:style "padding: 4px; font-size: 0.95em;"
(:option :value "top"
:selected (string= search-position "top")
"Top (Header)")
(:option :value "bottom"
:selected (string= search-position "bottom")
"Bottom (Footer)")))))
(:p :style "margin-top: 2em;"
(:input :type "submit" :value "Save Preferences")))
(:script "
function updateThemePreview(themeValue) {
// Find all stylesheet links
const links = document.querySelectorAll('link[rel=\"stylesheet\"]');
for (const link of links) {
if (link.href.includes('/static/styles/themes/')) {
link.href = '/static/styles/themes/' + themeValue + '.css';
}
}
}
")
(:hr)
(cl-who:str (render-footer-html))))))
(defun render-moderation (boards &optional board threads thread comments (prefs *preferences*) headline)
"Renders the admin/moderation control panel HTML page showing BOARDS and allowing deletions/edits."
(layout "cl-bbs Moderation Panel" "moderation" prefs
(cl-who:with-html-output-to-string (s nil :indent t)
(:h1 "Moderation Panel")
(:p (:a :href "/" "Back to Home"))
(:hr)
(:h2 "Boards")
(:ul
(dolist (b boards)
(cl-who:htm
(:li (:strong (:a :href (format nil "/admin?board=~a" b) (cl-who:esc b)))
" "
(:form :action "/admin/action" :method "POST" :style "display:inline;"
(:input :type "hidden" :name "action" :value "delete-board")
(:input :type "hidden" :name "board" :value b)
(:input :type "submit" :value "Delete Board" :class "delete-button"
:onclick (concatenate 'string
"return confirm('Are you sure you want to "
"delete the ENTIRE board? "
"This cannot be undone.');")))))))
(:h2 "Create Board")
(:p "Enter a board name below to create a new board. Board names must be in "
(:strong "kebab-case")
" (only lowercase letters, numbers, and hyphens; no spaces or underlines).")
(:div :style "margin: 1em 0;"
(:form :action "/admin/action" :method "POST" :onsubmit "return validateCreateBoard()"
(:input :type "hidden" :name "action" :value "create-board")
(:input :type "text" :name "board" :id "new-board-name" :placeholder "board-name"
:style "padding: 6px; font-size: 1em; border: 1px solid #bababa;
border-radius: 4px; font-family: monospace;")
" "
(:input :type "submit" :value "Create Board"))
(:p :id "board-error" :style "color: red; font-size: 0.9em; margin: 0.5em 0; display: none;"))
(:script :type "text/javascript"
"function validateCreateBoard() {
const input = document.getElementById('new-board-name');
const error = document.getElementById('board-error');
const boardName = input.value.trim();
// Regex for kebab-case (lowercase alphanumeric and hyphens only, no start/end hyphens)
const kebabRegex = /^[a-z0-9]+(?:-[a-z0-9]+)*$/;
if (!boardName) {
error.textContent = 'Please enter a board name.';
error.style.display = 'block';
return false;
}
if (!kebabRegex.test(boardName)) {
error.textContent = 'Invalid board name! Must contain only lowercase ' +
'alphanumeric characters and hyphens (e.g. \"lisp-board\", no spaces, ' +
'underlines or capitals).';
error.style.display = 'block';
return false;
}
error.style.display = 'none';
return true;
}")
(when board
(cl-who:htm
(:hr)
(:h2 (cl-who:fmt "Threads in /~a/" board))
(if threads
(cl-who:htm
(:table :border 1 :cellpadding 5
(:thead (:tr (:th "ID") (:th "Headline") (:th "Date") (:th "Actions")))
(:tbody
(dolist (t-data threads)
(let* ((tid (car t-data))
(props (cdr t-data))
(headline (cdr (assoc 'cl-bbs/models:headline props))))
(cl-who:htm
(:tr (:td (cl-who:str (format nil "~a" tid)))
(:td (:a :href (format nil "/admin?board=~a&thread=~a" board tid)
(cl-who:esc headline)))
(:td (cl-who:str (format nil "~a" (cdr (assoc 'cl-bbs/models:date props)))))
(:td (:form :action "/admin/action" :method "POST" :style "display:inline;"
(:input :type "hidden" :name "action" :value "delete-thread")
(:input :type "hidden" :name "board" :value board)
(:input :type "hidden" :name "thread" :value tid)
(:input :type "submit" :value "Delete Thread" :class "delete-button"
:onclick
(concatenate 'string
"return confirm('Are you sure you want "
"to delete this thread?');")))
(unless (string-equal board "shame")
(cl-who:htm
(:form :action "/admin/action" :method "POST"
:style "display:inline; margin-left: 5px;"
(:input :type "hidden" :name "action" :value "shame-thread")
(:input :type "hidden" :name "board" :value board)
(:input :type "hidden" :name "thread" :value tid)
(:input :type "submit" :value "Shame" :class "shame-button"
:onclick
(concatenate 'string
"return confirm('Are you sure you want "
"to move this thread to the shame "
"board?');")))))))))))))
(cl-who:htm (:p "No threads found on this board.")))))
(when (and board thread)
(cl-who:htm
(:hr)
(:h2 (cl-who:fmt "Comments in Thread #~a (~a)" thread board))
(if comments
(cl-who:htm
(:dl
(dolist (p comments)
(let* ((pid (car p))
(pdata (cdr p))
(content (cdr (assoc 'cl-bbs/models:content pdata)))
(date (cdr (assoc 'cl-bbs/models:date pdata))))
(cl-who:htm
(:dt "No." (cl-who:str (format nil "~a" pid)) " " (:samp (cl-who:esc date))
" "
(:form :action "/admin/action" :method "POST" :style "display:inline;"
(:input :type "hidden" :name "action" :value "delete-comment")
(:input :type "hidden" :name "board" :value board)
(:input :type "hidden" :name "thread" :value thread)
(:input :type "hidden" :name "comment" :value pid)
(:input :type "submit" :value "Delete Comment" :class "delete-button"
:onclick
"return confirm('Are you sure you want to delete this comment?');")))
(:dd
(:div :class "comment-preview"
(cl-who:str (format-text content thread)))
(:form :action "/admin/action" :method "POST" :style "margin-top: 0.5em;"
(:input :type "hidden" :name "action" :value "edit-comment")
(:input :type "hidden" :name "board" :value board)
(:input :type "hidden" :name "thread" :value thread)
(:input :type "hidden" :name "comment" :value pid)
(when (and (= pid 1) headline)
(cl-who:htm
(:p (:label :for "headline" "Thread Headline: ")
(:br)
(:input :type "text" :name "headline" :id "headline"
:size 60 :value headline))))
(:textarea :name "content" :rows 3 :cols 60 (cl-who:str content))
(:br)
(:input :type "submit" :value "Save Changes"))))))))
(cl-who:htm (:p "No comments found."))))))))
(defun render-search-results (query results &optional (prefs *preferences*))
"Renders the search results page HTML, showing matching posts for the given QUERY, using layout PREFS."
(let ((theme (preferences-theme prefs)))
(layout (format nil "Search: ~a" query) "search-results" prefs
(cl-who:with-html-output-to-string (s nil :indent t)
(:h1 "Search Results")
(:p :style "margin: 0.5em 2%;"
(:button :class "lisp-btn" :onclick "history.back();" "← Go Back")
" - Query: "
(:strong (cl-who:esc query)))
(:hr)
(if (null results)
(cl-who:htm (:p :style "margin: 2em; text-align: center;" "No results found matching your query."))
(cl-who:htm
(:dl :style "margin: 1em 2%;"
(dolist (match results)
(let* ((board (getf match :board))
(thread-id (getf match :thread-id))
(headline (getf match :headline))
(post-id (getf match :post-id))
(date (getf match :date))
(content (getf match :content))
(post-style (if (string= theme "colored")
(let ((hue (get-hash-hue post-id)))
(format nil (concatenate 'string
"background-color: hsl(~D, 85%, 96%); "
"border-left: 4px solid hsl(~D, 85%, 45%); "
"padding: 0.5em 1em; "
"margin: 0.3em 0 1.2em 0; "
"border-radius: 0 4px 4px 0;")
hue hue))
"")))
(cl-who:htm
(:dt :style "margin-top: 1.5em; font-size: 0.95em;"
"[" (:a :href (format nil "/~a/" board) (cl-who:esc board)) "] "
(:a :href (format nil "/~a/~a" board thread-id) (:strong (cl-who:esc headline)))
" - Post "
(:a :href (format nil "/~a/~a#t~ap~a" board thread-id thread-id post-id)
(cl-who:str (format nil "#~a" post-id)))
" "
(:samp (cl-who:esc date)))
(:dd :style post-style
(cl-who:str (format-text content thread-id)))))))))
(:hr)
(cl-who:str (render-footer-html))))))
(defun render-playground (&optional board (prefs *preferences*))
"Renders the interactive Common Lisp playground view."
(layout (if board (format nil "/~a/ - Lisp Playground" board) "Lisp Playground")
"playground-page"
prefs
(cl-who:with-html-output-to-string (s nil :indent t)
(when board
(cl-who:htm (cl-who:str (render-menu board "playground"))))
(:h2 "Common Lisp Playground")
(:p :style "margin: 0.5em 2%; font-size: 0.95em;"
"Write and execute Common Lisp code directly in your browser using "
(:a :href "https://github.com/jscl-project/jscl" :target "_blank" "JSCL")
". Everything runs completely client-side in a sandboxed environment.")
(:div :class "playground-container" :style "margin: 1.5em 2%;"
(:div :style "margin-bottom: 1em; display: flex; gap: 10px; align-items: center; flex-wrap: wrap;"
(:span "Load Example: ")
(:select :id "playground-examples" :style "padding: 4px;"
(:option :value "" "-- Select Example --")
(:option :value "hello" "Hello World")
(:option :value "fib" "Fibonacci Numbers")
(:option :value "loop" "Loop Macro")
(:option :value "clos" "Common Lisp Object System (CLOS)")))
(:div :id "example-data-hello" :style "display:none;"
(cl-who:str (colorize:html-colorization :common-lisp "(format t \"Hello, World!~%\")")))
(:div :id "example-data-fib" :style "display:none;"
(cl-who:str (colorize:html-colorization :common-lisp "(defun fib (n)
(if (< n 2)
n
(+ (fib (- n 1)) (fib (- n 2)))))
(format t \"Fibonacci of 10 is: ~a~%\" (fib 10))")))
(:div :id "example-data-loop" :style "display:none;"
(cl-who:str (colorize:html-colorization :common-lisp "(loop for x from 1 to 5
do (format t \"Square of ~d is ~d~%\" x (* x x)))")))
(:div :id "example-data-clos" :style "display:none;"
(cl-who:str (colorize:html-colorization :common-lisp "(defclass person ()
((name :accessor person-name :initarg :name)
(age :accessor person-age :initarg :age)))
(defmethod introduce ((p person))
(format t \"Hi, I am ~a and I am ~a years old.~%\"
(person-name p)
(person-age p)))
(let ((p (make-instance 'person :name \"Alice\" :age 30)))
(introduce p))")))
(:pre :id "playground-editor"
:class "lisp-code-block"
:contenteditable "true"
:spellcheck "false"
:style (concatenate 'string
"min-height: 200px; width: 96%; max-width: 800px; "
"font-family: monospace; font-size: 1.1em; padding: 10px; "
"border: 1px solid currentColor; background: transparent; "
"color: inherit; margin-bottom: 1em; outline: none; "
"overflow: auto; white-space: pre-wrap;")
"")
(:div :style "display: flex; gap: 10px; margin-bottom: 1em;"
(:button :id "playground-run" :class "lisp-btn" "Run Code")
(:button :id "playground-clear" :class "lisp-btn" "Clear Output"))
(:h3 "Output Console")
(:pre :id "playground-output"
:style (concatenate 'string
"display: none; padding: 10px; width: 96%; max-width: 800px; "
"border: 1px dashed currentColor; "
"background-color: rgba(128, 128, 128, 0.05); white-space: pre-wrap; "
"word-break: break-all; font-family: monospace; font-size: 1.1em; "
"line-height: 1.4em;")
""))
(:hr)
(cl-who:str (render-footer-html)))))
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