Implements post list in front end and backend.

forum.nim

@@ -12,6 +12,7 @@ import
   parseutils, utils, random, rst, ranks, recaptcha, json
 
 import redesign/threadlist except User
+import redesign/[category, postlist]
 
 when not defined(windows):
   import bcrypt # TODO
@@ -1013,6 +1014,47 @@ template createTFD() =
   if request.cookies.len > 0:
     checkLoggedIn(c)
 
+#[ DB functions. TODO: Move to another module? ]#
+
+proc selectUser(userRow: seq[string]): threadlist.User =
+  let isOnline = getTime().toUnix() - userRow[2].parseInt > (60*5)
+  return threadlist.User(
+    name: userRow[0],
+    avatarUrl: userRow[1].getGravatarUrl(),
+    isOnline: isOnline
+  )
+
+proc selectThread(threadRow: seq[string]): Thread =
+  const postsQuery =
+    sql"""select count(*), strftime('%s', creation) from post
+          where thread = ?
+          order by creation asc limit 1;"""
+  const usersListQuery =
+    sql"""select distinct name, email, strftime('%s', lastOnline)
+          from person where id in
+            (select author from post where thread = ?)
+          limit 5;""" # TODO: Order by most posts.
+
+  let posts = getRow(db, postsQuery, threadRow[0])
+
+  var thread = Thread(
+    id: threadRow[0].parseInt,
+    topic: threadRow[1],
+    category: Category(id: "", color: "#ff0000"), # TODO
+    users: @[],
+    replies: posts[0].parseInt,
+    views: threadRow[2].parseInt,
+    activity: threadRow[3].parseInt,
+    creation: posts[1].parseInt,
+    isLocked: false,
+    isSolved: false # TODO: ^ and this. Add a field to `post` to identify.
+  )
+
+  # Gather the users list.
+  for user in getAllRows(db, usersListQuery, thread.id):
+    thread.users.add(selectUser(user))
+
+  return thread
 
 initialise()
 
@@ -1037,56 +1079,71 @@ routes:
 
   get "/karax/threads.json":
     var
-      start = 0
-      count = 30
-    parseInt(@"start", start, 0..1_000_000)
-    parseInt(@"count", start, 0..1_000_000)
+      start = getInt(@"start", 0)
+      count = getInt(@"count", 30)
 
     const threadsQuery =
       sql"""select id, name, views, strftime('%s', modified) from thread
-            order by modified desc limit ?, ?;"""
-    const postsQuery =
-      sql"""select count(*), strftime('%s', creation) from post
-            where thread = ?
-            order by creation asc limit 1;"""
-    const usersListQuery =
-      sql"""select distinct name, email, strftime('%s', lastOnline)
-            from person where id in
-              (select author from post where thread = ?)
-            limit 5;""" # TODO: Order by most posts.
+            order by modified desc limit ?, ?;""" # TODO: Moderation
 
     let thrCount = getValue(db, sql"select count(*) from thread;").parseInt()
     let moreCount = max(0, thrCount - (start + count))
 
     var list = ThreadList(threads: @[], lastVisit: 0, moreCount: moreCount)
     for data in getAllRows(db, threadsQuery, start, count):
-      let posts = getRow(db, postsQuery, data[0])
-
-      var thread = Thread(
-        id: data[0].parseInt,
-        topic: data[1],
-        category: Category(id: "", color: "#ff0000"), # TODO
-        users: @[],
-        replies: posts[0].parseInt,
-        views: data[2].parseInt,
-        activity: data[3].parseInt,
-        creation: posts[1].parseInt,
-        isLocked: false,
-        isSolved: false # TODO: ^ and this. Add a field to `post` to identify.
-      )
-
-      # Gather the users list.
-      for user in getAllRows(db, usersListQuery, thread.id):
-        let isOnline = getTime().toUnix() - user[2].parseInt > (60*5)
-        thread.users.add(threadlist.User(
-          name: user[0],
-          avatarUrl: user[1].getGravatarUrl(),
-          isOnline: isOnline
-        ))
+      let thread = selectThread(data)
       list.threads.add(thread)
 
     resp $(%list), "application/json"
 
+  get "/karax/posts.json":
+    createTFD()
+    var
+      id = getInt(@"id", -1)
+      start = getInt(@"start", 0)
+      count = getInt(@"count", 5)
+    cond id != -1
+
+    const threadsQuery =
+      sql"""select id, name, views, strftime('%s', modified) from thread
+            where id = ?;"""
+
+    let threadRow = getRow(db, threadsQuery, id)
+    let thread = selectThread(threadRow)
+
+    let modClause =
+      if c.rank >= Moderator:
+        "(1 or u.id = ?)"
+      else:
+        "(u.status <> 'Moderated' or p.author = ?)"
+    let postsQuery =
+      sql(
+        """select p.id, p.content, strftime('%s', p.creation), p.author,
+                  u.name, u.email, strftime('%s', u.lastOnline)
+           from post p, person u
+           where u.id = p.author and p.thread = ? and $#
+                  and (u.status <> 'Spammer' or p.author = ?)
+           order by p.id limit ?, ?""" % modClause
+      )
+
+    var list = PostList(posts: @[], history: @[], thread: thread)
+    for post in getAllRows(db, postsQuery, id, c.userId, c.userId,
+                           start, count):
+      list.posts.add(Post(
+        id: post[0].parseInt,
+        author: selectUser(@[post[4], post[5], post[6]]),
+        likes: @[], # TODO:
+        seen: false, # TODO:
+        history: @[], # TODO:
+        info: PostInfo(
+          creation: post[2].parseInt,
+          content: post[1]
+        )
+      ))
+
+    resp $(%list), "application/json"
+
+
   get "/threadActivity.xml":
     createTFD()
     c.isThreadsList = true

redesign/category.nim

@@ -0,0 +1,23 @@
+
+type
+  Category* = object
+    id*: string
+    color*: string
+
+
+when defined(js):
+  include karax/prelude
+  import karax / [vstyles, kajax, kdom]
+
+  import karaxutils
+
+  proc render*(category: Category): VNode =
+    result = buildHtml():
+      if category.id.len > 0:
+        tdiv(class="triangle",
+             style=style(
+               (StyleAttr.borderBottom, kstring"0.6rem solid " & category.color)
+        )):
+          text category.id
+      else:
+        span()

redesign/error.nim

@@ -0,0 +1,17 @@
+include karax/prelude
+import karax / [vstyles, kajax, kdom]
+
+
+proc renderError*(message: string): VNode =
+  result = buildHtml():
+    tdiv(class="empty error"):
+      tdiv(class="empty icon"):
+        italic(class="fas fa-bug fa-5x")
+      p(class="empty-title h5"):
+        text message
+      p(class="empty-subtitle"):
+        text "Please report this issue to us so we can fix it!"
+      tdiv(class="empty-action"):
+        a(href="https://github.com/nim-lang/nimforum/issues", target="_blank"):
+          button(class="btn btn-primary"):
+            text "Report issue"

redesign/forum.nim

@@ -4,7 +4,7 @@ from dom import window, Location
 include karax/prelude
 
 
-import threadlist, karaxutils
+import threadlist, postlist, karaxutils
 
 type
   State = ref object
@@ -44,7 +44,7 @@ proc render(): VNode =
   result = buildHtml(tdiv()):
     genHeader()
     if "/t/" in state.url.pathname:
-      text "</thread>"
+      renderPostList(3806, false)
     else:
       renderThreadList()
 

redesign/postlist.nim

@@ -0,0 +1,117 @@
+
+import options, json, times, httpcore, strformat
+
+import threadlist, category
+type
+  PostInfo* = object
+    creation*: int64
+    content*: string
+
+  Post* = object
+    id*: int
+    author*: User
+    likes*: seq[User] ## Users that liked this post.
+    seen*: bool ## Determines whether the current user saw this post.
+                ## I considered using a simple timestamp for each thread,
+                ## but that wouldn't work when a user navigates to the last
+                ## post in a thread for example.
+    history*: seq[PostInfo] ## If the post was edited this will contain the
+                            ## older versions of the post.
+    info*: PostInfo
+
+  PostList* = ref object
+    thread*: Thread
+    history*: seq[Thread] ## If the thread was edited this will contain the
+                          ## older versions of the thread (title/category
+                          ## changes).
+    posts*: seq[Post]
+
+when defined(js):
+  include karax/prelude
+  import karax / [vstyles, kajax, kdom]
+
+  import karaxutils, error
+
+  type
+    State = ref object
+      list: Option[PostList]
+      loading: bool
+      status: HttpCode
+
+  proc newState(): State =
+    State(
+      list: none[PostList](),
+      loading: false,
+      status: Http200
+    )
+
+  var
+    state = newState()
+
+  proc onPostList(httpStatus: int, response: kstring) =
+    state.loading = false
+    state.status = httpStatus.HttpCode
+    if state.status != Http200: return
+
+    let parsed = parseJson($response)
+    let list = to(parsed, PostList)
+
+    if state.list.isSome:
+      state.list.get().posts.add(list.posts)
+      # TODO: Incorporate other possible changes?
+    else:
+      state.list = some(list)
+
+  proc renderPostUrl(post: Post, thread: Thread): string =
+    makeUri(fmt"/t/{thread.id}/p/{post.id}")
+
+  proc genPost(post: Post, thread: Thread, isLoggedIn: bool): VNode =
+    result = buildHtml():
+      tdiv(class="post"):
+        tdiv(class="post-icon"):
+          render(post.author, "post-avatar")
+        tdiv(class="post-main"):
+          tdiv(class="post-title"):
+            tdiv(class="post-username"):
+              text post.author.name
+            tdiv(class="post-time"):
+              let title = post.info.creation.fromUnix().local.
+                          format("MMM d, yyyy HH:mm")
+              a(href=renderPostUrl(post, thread), title=title):
+                text renderActivity(post.info.creation)
+          tdiv(class="post-content"):
+            p(text post.info.content) # TODO: RSTGEN
+          tdiv(class="post-buttons"):
+            tdiv(class="like-button"):
+              button(class="btn"):
+                span(class="like-count"):
+                  if post.likes.len > 0:
+                    text $post.likes.len
+                  italic(class="far fa-heart")
+            if isLoggedIn:
+              tdiv(class="flag-button"):
+                button(class="btn"):
+                  italic(class="far fa-flag")
+              tdiv(class="reply-button"):
+                button(class="btn"):
+                  italic(class="fas fa-reply")
+                  text " Reply"
+
+  proc renderPostList*(threadId: int, isLoggedIn: bool): VNode =
+    if state.status != Http200:
+      return renderError("Couldn't retrieve posts.")
+
+    if state.list.isNone:
+      ajaxGet(makeUri("posts.json?id=" & $threadId), @[], onPostList)
+
+      return buildHtml(tdiv(class="loading loading-lg"))
+
+    let list = state.list.get()
+    result = buildHtml():
+      section(class="container grid-xl"):
+        tdiv(class="title"):
+          p(): text list.thread.topic
+          render(list.thread.category)
+        tdiv(class="posts"):
+          for post in list.posts:
+            genPost(post, list.thread, isLoggedIn)

redesign/threadlist.nim

@@ -1,4 +1,6 @@
-import strformat, times, options, json
+import strformat, times, options, json, httpcore
+
+import category
 
 type
   User* = object
@@ -6,10 +8,6 @@ type
     avatarUrl*: string
     isOnline*: bool
 
-  Category* = object
-    id*: string
-    color*: string
-
   Thread* = object
     id*: int
     topic*: string
@@ -31,17 +29,19 @@ when defined(js):
   include karax/prelude
   import karax / [vstyles, kajax, kdom]
 
-  import karaxutils
+  import karaxutils, error
 
   type
     State = ref object
       list: Option[ThreadList]
       loading: bool
+      status: HttpCode
 
   proc newState(): State =
     State(
       list: none[ThreadList](),
-      loading: false
+      loading: false,
+      status: Http200
     )
 
   var
@@ -63,16 +63,20 @@ when defined(js):
           button(class="btn btn-link"): text "Categories"
         section(class="navbar-section")
 
+  proc render*(user: User, class: string): VNode =
+    result = buildHtml():
+      figure(class=class):
+        img(src=user.avatarUrl, title=user.name)
+        if user.isOnline:
+          italic(class="avatar-presense online")
+
   proc genUserAvatars(users: seq[User]): VNode =
     result = buildHtml(td):
       for user in users:
-        figure(class="avatar avatar-sm"):
-          img(src=user.avatarUrl, title=user.name)
-          if user.isOnline:
-            italic(class="avatar-presense online")
+        render(user, "avatar avatar-sm")
         text " "
 
-  proc renderActivity(activity: int64): string =
+  proc renderActivity*(activity: int64): string =
     let currentTime = getTime()
     let activityTime = fromUnix(activity)
     let duration = currentTime - activityTime
@@ -97,12 +101,7 @@ when defined(js):
             italic(class="fas fa-lock fa-xs")
           a(href=makeUri("/t/" & $thread.id), onClick=anchorCB): text thread.topic
         td():
-          if thread.category.id.len > 0:
-            tdiv(class="triangle",
-                 style=style(
-                   (StyleAttr.borderBottom, kstring"0.6rem solid " & thread.category.color)
-            )):
-              text thread.category.id
+          render(thread.category)
         genUserAvatars(thread.users)
         td(): text $thread.replies
         td(class=class({
@@ -119,6 +118,9 @@ when defined(js):
 
   proc onThreadList(httpStatus: int, response: kstring) =
     state.loading = false
+    state.status = httpStatus.HttpCode
+    if state.status != Http200: return
+
     let parsed = parseJson($response)
     let list = to(parsed, ThreadList)
 
@@ -132,11 +134,14 @@ when defined(js):
   proc onLoadMore(ev: Event, n: VNode) =
     state.loading = true
     let start = state.list.get().threads.len
-    ajaxGet("threads.json?start=" & $start, @[], onThreadList)
+    ajaxGet(makeUri("threads.json?start=" & $start), @[], onThreadList)
 
   proc genThreadList(): VNode =
+    if state.status != Http200:
+      return renderError("Couldn't retrieve threads.")
+
     if state.list.isNone:
-      ajaxGet("threads.json", @[], onThreadList)
+      ajaxGet(makeUri("threads.json"), @[], onThreadList)
 
       return buildHtml(tdiv(class="loading loading-lg"))
 

utils.nim

@@ -15,6 +15,11 @@ proc parseInt*(s: string, value: var int, validRange: Slice[int]) {.
     discard
   if x in validRange: value = x
 
+proc getInt*(s: string, default = 0): int =
+  ## Safely parses an int and returns it.
+  result = default
+  parseInt(s, result, 0..1_000_000_000)
+
 type
   Config* = object
     smtpAddress: string