Peer Discussion Forum

blockeducation

StackOverflow and EdStem style student community Q&A thread with upvoting, accepted instructor answers, markdown code formatting, rich answer composer, and related discussions sidebar.

Installation

$pnpm dlx uipkge-ng@latest add peer-discussion-forum

$npx uipkge-ng@latest add peer-discussion-forum

$yarn dlx uipkge-ng@latest add peer-discussion-forum

$bunx uipkge-ng@latest add peer-discussion-forum

Manifest:https://uipkge.dev/r/angular/peer-discussion-forum.jsonInstalls to:src/app/components/blocks/peer-discussion-forum/

Variants

Loading interactive previews…

Schema

Type aliases exported from this item's source. Use these to shape the data you pass in.

CommunityAnswer

interface CommunityAnswer {
  id: string
  authorName: string
  authorRole: string
  avatarText: string
  postedTime: string
  score: number
  content: string
  userVote?: ForumVote
}

RelatedDiscussion

interface RelatedDiscussion {
  title: string
  status: 'Solved' | 'Open'
  upvotes: string
  answers: string
}

npm dependencies

lucide-angular

Includes

avatar badge button card separator textarea

Files installed (2)

src/app/components/blocks/peer-discussion-forum/peer-discussion-forum.component.ts46.5 kB

// StackOverflow / EdStem style student community Q&A thread: breadcrumb header with share
// actions, solved badges and tags, a question card with voting + bookmark + subscribe, an
// accepted instructor answer with solution snippets, a peer answer, a markdown composer that
// appends answers, and a sidebar with discussion info, related threads and etiquette.
import { ChangeDetectionStrategy, Component, DestroyRef, Input, computed, inject, signal } from '@angular/core'
import {
  ArrowUpRight,
  Award,
  Bell,
  BellOff,
  Bold,
  BookOpen,
  Bookmark,
  Check,
  CheckCircle2,
  ChevronDown,
  ChevronUp,
  Code,
  Copy,
  Eye,
  Flag,
  Italic,
  Link2,
  List,
  LucideAngularModule,
  MessageSquare,
  Plus,
  Quote,
  Share2,
  Tag,
  ThumbsUp,
} from 'lucide-angular'
import { cn } from '@/lib/utils'
import { UiAvatarComponent, UiAvatarFallbackComponent } from '@/ui/avatar/avatar.component'
import { UiBadgeComponent } from '@/ui/badge/badge.component'
import { UiButtonComponent } from '@/ui/button/button.component'
import {
  UiCardComponent,
  UiCardContentComponent,
  UiCardDescriptionComponent,
  UiCardHeaderComponent,
  UiCardTitleComponent,
} from '@/ui/card/card.component'
import { UiSeparatorComponent } from '@/ui/separator/separator.component'
import { UiTextareaComponent } from '@/ui/textarea/textarea.component'

export type ForumVote = 'up' | 'down' | null
export type ComposerFormat = 'bold' | 'italic' | 'code' | 'link' | 'list' | 'quote'

export interface CommunityAnswer {
  id: string
  authorName: string
  authorRole: string
  avatarText: string
  postedTime: string
  score: number
  content: string
  userVote?: ForumVote
}

interface RelatedDiscussion {
  title: string
  status: 'Solved' | 'Open'
  upvotes: string
  answers: string
}

const relatedDiscussions: RelatedDiscussion[] = [
  {
    title: 'How to type polymorphic asChild props with Reka UI in Vue 3.5?',
    status: 'Solved',
    upvotes: '38 upvotes',
    answers: '4 answers',
  },
  {
    title: 'Configuring OKLCH Tailwind v4 themes with Nuxt 4',
    status: 'Solved',
    upvotes: '24 upvotes',
    answers: '2 answers',
  },
  {
    title: 'Best practices for CVA compoundVariants in TypeScript',
    status: 'Open',
    upvotes: '19 upvotes',
    answers: '1 answer',
  },
  {
    title: 'Hydration mismatches with client-side theme switchers in Astro SSG',
    status: 'Solved',
    upvotes: '52 upvotes',
    answers: '6 answers',
  },
]

const etiquetteItems = [
  'Isolate reproducible snippets using [name].variants.ts patterns.',
  'Search existing questions before posting duplicate topics.',
  'Mark the accepted solution once your issue is verified.',
]

function applyVote(
  score: number,
  current: ForumVote,
  type: Exclude<ForumVote, null>,
): { score: number; vote: ForumVote } {
  if (current === type) return { score: score + (type === 'up' ? -1 : 1), vote: null }
  let delta = type === 'up' ? 1 : -1
  if (current === 'up') delta -= 1
  if (current === 'down') delta += 1
  return { score: score + delta, vote: type }
}

@Component({
  changeDetection: ChangeDetectionStrategy.Eager,
  selector: 'ui-peer-discussion-forum, [ui-peer-discussion-forum]',
  standalone: true,
  // React renders the root <div> itself: the host stays out of layout and `class` goes to the root.
  host: { '[attr.class]': '"contents"' },
  imports: [
    LucideAngularModule,
    UiAvatarComponent,
    UiAvatarFallbackComponent,
    UiBadgeComponent,
    UiButtonComponent,
    UiCardComponent,
    UiCardContentComponent,
    UiCardDescriptionComponent,
    UiCardHeaderComponent,
    UiCardTitleComponent,
    UiSeparatorComponent,
    UiTextareaComponent,
  ],
  template: `
    <div data-slot="peer-discussion-forum" [class]="rootClass">
      <header class="bg-card rounded-xl border p-5 shadow-xs sm:p-6">
        <div class="flex flex-col gap-4">
          <div class="flex flex-wrap items-center justify-between gap-3">
            <div class="text-muted-foreground flex flex-wrap items-center gap-1.5 text-xs">
              <span>CS-314 Advanced Frontend Architecture</span>
              <span class="text-border">/</span>
              <span>Discussions</span>
              <span class="text-border">/</span>
              <span class="text-foreground font-mono font-medium">#DISC-2048</span>
            </div>
            <div class="flex items-center gap-2">
              <button ui-button variant="outline" size="sm" class="gap-1.5 text-xs font-medium" (click)="shareThread()">
                <lucide-icon [img]="Share2" class="size-3.5" />
                <span>{{ copiedLink() ? 'Link Copied!' : 'Share Thread' }}</span>
              </button>
              <button ui-button size="sm" class="gap-1.5 text-xs font-medium">
                <lucide-icon [img]="Plus" class="size-3.5" />
                Ask Question
              </button>
            </div>
          </div>

          <div class="space-y-2.5">
            <div class="flex flex-wrap items-center gap-2">
              <span
                ui-badge
                variant="outline"
                class="border-success/30 bg-success/10 text-success gap-1 text-xs font-semibold"
              >
                <lucide-icon [img]="CheckCircle2" class="text-success size-3.5" />
                Solved · 1 Accepted Answer
              </span>
              <span ui-badge variant="secondary" class="text-xs font-medium">Vue 3.5 & Vite</span>
            </div>
            <h1 class="text-foreground text-xl font-bold tracking-tight sm:text-2xl lg:text-3xl">
              How to properly avoid circular dependencies in Vue 3.5 SFC variants with CVA?
            </h1>
            <div class="flex flex-wrap items-center gap-1.5 pt-1">
              @for (tag of tags; track tag) {
                <span
                  class="bg-muted/70 text-muted-foreground hover:text-foreground inline-flex items-center gap-1 rounded-md px-2.5 py-1 text-xs font-medium transition-colors"
                >
                  <lucide-icon [img]="Tag" class="text-muted-foreground size-3" />
                  {{ tag }}
                </span>
              }
            </div>
          </div>

          <ui-separator />

          <div class="text-muted-foreground flex flex-wrap items-center gap-x-6 gap-y-2 text-xs">
            <div><span>Asked </span><strong class="text-foreground font-medium">2 days ago</strong></div>
            <div><span>Modified </span><strong class="text-foreground font-medium">18 hours ago</strong></div>
            <div><span>Viewed </span><strong class="text-foreground font-medium tabular-nums">1,420 times</strong></div>
            <div>
              <span>Module </span><strong class="text-foreground font-medium">Component Registry Architecture</strong>
            </div>
          </div>
        </div>
      </header>

      <div class="grid grid-cols-1 gap-6 lg:grid-cols-12">
        <main class="space-y-6 lg:col-span-8">
          <article class="bg-card rounded-xl border p-5 shadow-xs sm:p-6">
            <div class="flex items-start gap-4 sm:gap-6">
              <div class="flex flex-col items-center">
                <button
                  ui-button
                  variant="outline"
                  size="icon"
                  [class]="questionUpClass"
                  aria-label="Upvote question"
                  (click)="voteQuestion('up')"
                >
                  <lucide-icon [img]="ChevronUp" class="size-5" />
                </button>
                <span class="text-foreground my-1.5 font-mono text-base font-bold tabular-nums">{{
                  questionScore()
                }}</span>
                <button
                  ui-button
                  variant="outline"
                  size="icon"
                  [class]="questionDownClass"
                  aria-label="Downvote question"
                  (click)="voteQuestion('down')"
                >
                  <lucide-icon [img]="ChevronDown" class="size-5" />
                </button>
                <button
                  ui-button
                  variant="ghost"
                  size="icon"
                  [class]="questionBookmarkClass"
                  aria-label="Bookmark question"
                  (click)="isQuestionBookmarked.set(!isQuestionBookmarked())"
                >
                  <lucide-icon [img]="Bookmark" [class]="questionBookmarkIconClass" />
                </button>
              </div>

              <div class="min-w-0 flex-1 space-y-4">
                <div class="flex flex-wrap items-center justify-between gap-2 border-b pb-3.5">
                  <div class="flex items-center gap-3">
                    <ui-avatar class="size-10 border">
                      <ui-avatar-fallback class="bg-primary/10 text-primary text-xs font-semibold"
                        >DC</ui-avatar-fallback
                      >
                    </ui-avatar>
                    <div>
                      <div class="flex items-center gap-2">
                        <span class="text-foreground text-sm font-semibold">David Chen</span>
                        <span ui-badge variant="secondary" class="text-xs font-normal">Student</span>
                      </div>
                      <p class="text-muted-foreground text-xs">Posted 2 days ago · Oct 22, 2026 at 14:32</p>
                    </div>
                  </div>
                  <button
                    ui-button
                    variant="ghost"
                    size="sm"
                    [class]="subscribeClass"
                    (click)="isSubscribed.set(!isSubscribed())"
                  >
                    @if (isSubscribed()) {
                      <lucide-icon [img]="Bell" class="size-3.5" />
                    } @else {
                      <lucide-icon [img]="BellOff" class="size-3.5" />
                    }
                    <span>{{ isSubscribed() ? 'Subscribed' : 'Subscribe' }}</span>
                  </button>
                </div>

                <div class="text-foreground/90 space-y-3.5 text-sm leading-relaxed">
                  <p>
                    While implementing unbundled UI primitives for our course project using Vue 3.5, TypeScript, and
                    <code class="bg-muted text-foreground rounded px-1.5 py-0.5 font-mono text-xs">
                      class-variance-authority
                    </code>
                    , we ran into a perplexing runtime error during dev SSR and fast refresh:
                  </p>
                  <div
                    class="border-destructive/30 bg-destructive/10 text-destructive rounded-md border px-3.5 py-2.5 font-mono text-xs"
                  >
                    TypeError: $setup.buttonVariants is not a function at Button.vue:24
                  </div>
                  <p>
                    Our initial project structure placed both the component export and the CVA variant definition in the
                    same barrel file:
                  </p>
                  <div class="overflow-hidden rounded-lg border bg-zinc-950 text-zinc-100">
                    <div
                      class="flex items-center justify-between border-b border-zinc-800 bg-zinc-900/90 px-3.5 py-2 text-xs text-zinc-400"
                    >
                      <div class="flex items-center gap-2">
                        <lucide-icon [img]="Code" class="text-warning size-3.5" />
                        <span class="font-mono text-xs">components/ui/button/index.ts (Problematic Barrel)</span>
                      </div>
                      <button
                        ui-button
                        variant="ghost"
                        size="sm"
                        class="h-6 gap-1 px-2 text-xs text-zinc-300 hover:bg-zinc-800 hover:text-zinc-100"
                        (click)="copyQuestionCode()"
                      >
                        @if (copiedQuestionSnippet()) {
                          <lucide-icon [img]="Check" class="text-success size-3" />
                        } @else {
                          <lucide-icon [img]="Copy" class="size-3" />
                        }
                        {{ copiedQuestionSnippet() ? 'Copied' : 'Copy code' }}
                      </button>
                    </div>
                    <pre
                      class="overflow-x-auto p-4 font-mono text-xs leading-relaxed text-zinc-300"
                    ><code>import {{ '{' }} cva {{ '}' }} from 'class-variance-authority'

export {{ '{' }} default as Button {{ '}' }} from './Button.vue'</code></pre>
                  </div>
                  <p>
                    Because
                    <code class="bg-muted text-foreground rounded px-1.5 py-0.5 font-mono text-xs">Button.vue</code>
                    imports
                    <code class="bg-muted text-foreground rounded px-1.5 py-0.5 font-mono text-xs">buttonVariants</code>
                    from
                    <code class="bg-muted text-foreground rounded px-1.5 py-0.5 font-mono text-xs">./index.ts</code>,
                    Vite evaluates the module in a cycle where the variant function binding is uninitialized during the
                    Vue SFC component setup.
                  </p>
                  <p>
                    What is the canonical architecture pattern to cleanly break this circular import while maintaining
                    convenient barrel exports for consumers?
                  </p>
                </div>

                <div class="flex flex-wrap items-center justify-between gap-3 pt-2">
                  <div class="flex items-center gap-1">
                    <button
                      ui-button
                      variant="ghost"
                      size="sm"
                      class="text-muted-foreground h-8 gap-1.5 text-xs"
                      (click)="shareThread()"
                    >
                      <lucide-icon [img]="Share2" class="size-3.5" />
                      <span>Share</span>
                    </button>
                    <button ui-button variant="ghost" size="sm" class="text-muted-foreground h-8 gap-1.5 text-xs">
                      <lucide-icon [img]="Flag" class="size-3.5" />
                      <span>Report</span>
                    </button>
                  </div>
                  <div class="text-muted-foreground flex items-center gap-1.5 text-xs">
                    <lucide-icon [img]="Eye" class="size-3.5" />
                    <span class="tabular-nums">1.4k views</span>
                  </div>
                </div>
              </div>
            </div>
          </article>

          <div class="flex items-center justify-between pt-2">
            <h2 class="text-foreground text-lg font-bold tracking-tight sm:text-xl">
              {{ totalAnswersCount() }} Answers
            </h2>
            <span class="text-muted-foreground text-xs">
              Sorted by: <strong class="text-foreground font-medium">Highest score</strong>
            </span>
          </div>

          <article
            class="bg-card border-success/40 ring-success/20 relative overflow-hidden rounded-xl border shadow-xs ring-1"
          >
            <div
              class="border-success/20 bg-success/10 flex flex-wrap items-center justify-between gap-2 border-b px-5 py-2.5"
            >
              <div class="text-success flex items-center gap-2 text-xs font-semibold">
                <lucide-icon [img]="CheckCircle2" class="text-success size-4" />
                <span>Accepted by Author · Verified Solution</span>
              </div>
              <span ui-badge class="bg-success hover:bg-success text-xs font-medium text-white"
                >Instructor Solution</span
              >
            </div>
            <div class="p-5 sm:p-6">
              <div class="flex items-start gap-4 sm:gap-6">
                <div class="flex flex-col items-center">
                  <button
                    ui-button
                    variant="outline"
                    size="icon"
                    [class]="answer1UpClass"
                    aria-label="Upvote answer"
                    (click)="voteAnswer1('up')"
                  >
                    <lucide-icon [img]="ChevronUp" class="size-5" />
                  </button>
                  <span class="text-foreground my-1.5 font-mono text-base font-bold tabular-nums">{{
                    answer1Score()
                  }}</span>
                  <button
                    ui-button
                    variant="outline"
                    size="icon"
                    [class]="answer1DownClass"
                    aria-label="Downvote answer"
                    (click)="voteAnswer1('down')"
                  >
                    <lucide-icon [img]="ChevronDown" class="size-5" />
                  </button>
                  <div
                    class="bg-success/15 text-success mt-3 flex size-8 items-center justify-center rounded-full"
                    title="Accepted solution"
                  >
                    <lucide-icon [img]="Check" class="size-4 stroke-[2.5]" />
                  </div>
                </div>

                <div class="min-w-0 flex-1 space-y-4">
                  <div class="flex flex-wrap items-center justify-between gap-2 border-b pb-3.5">
                    <div class="flex items-center gap-3">
                      <ui-avatar class="border-success/30 size-10 border">
                        <ui-avatar-fallback class="bg-success/20 text-success text-xs font-semibold"
                          >MV</ui-avatar-fallback
                        >
                      </ui-avatar>
                      <div>
                        <div class="flex items-center gap-2">
                          <span class="text-foreground text-sm font-semibold">Marcus Vance</span>
                          <span
                            ui-badge
                            variant="outline"
                            class="border-success/30 bg-success/10 text-success text-xs font-medium"
                          >
                            Course Instructor
                          </span>
                          <span ui-badge variant="secondary" class="text-xs">Staff</span>
                        </div>
                        <p class="text-muted-foreground text-xs">Answered 1 day ago · Edited 18h ago</p>
                      </div>
                    </div>
                    <button
                      ui-button
                      variant="ghost"
                      size="sm"
                      class="text-muted-foreground h-7 gap-1 text-xs"
                      (click)="isAnswer1Bookmarked.set(!isAnswer1Bookmarked())"
                    >
                      <lucide-icon [img]="Bookmark" [class]="answer1BookmarkIconClass" />
                      <span>{{ isAnswer1Bookmarked() ? 'Saved' : 'Save' }}</span>
                    </button>
                  </div>

                  <div class="text-foreground/90 space-y-3.5 text-sm leading-relaxed">
                    <p>
                      Great question, David. This is one of the most frequent traps when building unbundled component
                      registries with Vue 3.5 and Vite.
                    </p>
                    <h3 class="text-foreground text-sm font-semibold tracking-tight">
                      The Solution: Three-File Sidecar Architecture
                    </h3>
                    <p>
                      To completely eliminate cyclic dependencies and ensure 100% reliable SSR and Vite HMR, extract all
                      CVA definitions into a dedicated
                      <code class="bg-muted text-foreground rounded px-1.5 py-0.5 font-mono text-xs"
                        >&lt;name&gt;.variants.ts</code
                      >
                      file:
                    </p>
                    <div class="overflow-hidden rounded-lg border bg-zinc-950 text-zinc-100">
                      <div
                        class="flex items-center justify-between border-b border-zinc-800 bg-zinc-900/90 px-3.5 py-2 text-xs text-zinc-400"
                      >
                        <div class="flex items-center gap-2">
                          <lucide-icon [img]="Code" class="text-success size-3.5" />
                          <span class="font-mono text-xs">components/ui/button/button.variants.ts</span>
                        </div>
                        <button
                          ui-button
                          variant="ghost"
                          size="sm"
                          class="h-6 gap-1 px-2 text-xs text-zinc-300 hover:bg-zinc-800 hover:text-zinc-100"
                          (click)="copyAnswer1Code()"
                        >
                          @if (copiedAnswer1Snippet()) {
                            <lucide-icon [img]="Check" class="text-success size-3" />
                          } @else {
                            <lucide-icon [img]="Copy" class="size-3" />
                          }
                          {{ copiedAnswer1Snippet() ? 'Copied' : 'Copy code' }}
                        </button>
                      </div>
                      <pre
                        class="overflow-x-auto p-4 font-mono text-xs leading-relaxed text-zinc-300"
                      ><code>export const buttonVariants = cva('inline-flex items-center justify-center rounded-md font-medium transition-colors focus-visible:ring-2 focus-visible:outline-none', {{ '{' }} variants: {{ '{' }} variant: {{ '{' }} default: 'bg-primary text-primary-foreground shadow-xs' {{ '}' }} {{ '}' }} {{ '}' }})</code></pre>
                    </div>
                    <ul class="list-inside list-disc space-y-1.5 pl-1 text-xs sm:text-sm">
                      <li>
                        <strong>Acyclic Dependency Graph:</strong> Button.vue imports strictly from ./button.variants.
                      </li>
                      <li>
                        <strong>Tree-Shakable:</strong> Consumers can import just the variant generator without mounting
                        the Vue SFC component instance.
                      </li>
                      <li>
                        <strong>Cross-Framework Ready:</strong> The variant file is pure TypeScript, making it 100%
                        shareable across Vue and React registry packages.
                      </li>
                    </ul>
                  </div>

                  <div class="flex items-center justify-between border-t pt-3">
                    <div class="flex items-center gap-2">
                      <button
                        ui-button
                        variant="outline"
                        size="sm"
                        class="h-7 gap-1.5 text-xs"
                        (click)="voteAnswer1('up')"
                      >
                        <lucide-icon [img]="ThumbsUp" class="size-3" />
                        <span>Helpful ({{ answer1Score() }})</span>
                      </button>
                      <button
                        ui-button
                        variant="ghost"
                        size="sm"
                        class="text-muted-foreground h-7 gap-1.5 text-xs"
                        (click)="shareThread()"
                      >
                        <lucide-icon [img]="Share2" class="size-3" />
                        <span>Share</span>
                      </button>
                    </div>
                    <span class="text-muted-foreground text-xs">89 students found this helpful</span>
                  </div>
                </div>
              </div>
            </div>
          </article>

          <article class="bg-card rounded-xl border p-5 shadow-xs sm:p-6">
            <div class="flex items-start gap-4 sm:gap-6">
              <div class="flex flex-col items-center">
                <button
                  ui-button
                  variant="outline"
                  size="icon"
                  [class]="answer2UpClass"
                  aria-label="Upvote answer"
                  (click)="voteAnswer2('up')"
                >
                  <lucide-icon [img]="ChevronUp" class="size-5" />
                </button>
                <span class="text-foreground my-1.5 font-mono text-base font-bold tabular-nums">{{
                  answer2Score()
                }}</span>
                <button
                  ui-button
                  variant="outline"
                  size="icon"
                  [class]="answer2DownClass"
                  aria-label="Downvote answer"
                  (click)="voteAnswer2('down')"
                >
                  <lucide-icon [img]="ChevronDown" class="size-5" />
                </button>
              </div>

              <div class="min-w-0 flex-1 space-y-4">
                <div class="flex flex-wrap items-center justify-between gap-2 border-b pb-3.5">
                  <div class="flex items-center gap-3">
                    <ui-avatar class="size-10 border">
                      <ui-avatar-fallback class="bg-info/20 text-info text-xs font-semibold">SL</ui-avatar-fallback>
                    </ui-avatar>
                    <div>
                      <div class="flex items-center gap-2">
                        <span class="text-foreground text-sm font-semibold">Sophia Lin</span>
                        <span ui-badge variant="secondary" class="text-xs font-normal">Teaching Assistant</span>
                      </div>
                      <p class="text-muted-foreground text-xs">Answered 2 days ago · Oct 22, 2026 at 18:40</p>
                    </div>
                  </div>
                  <button
                    ui-button
                    variant="ghost"
                    size="sm"
                    class="text-muted-foreground h-7 gap-1 text-xs"
                    (click)="isAnswer2Bookmarked.set(!isAnswer2Bookmarked())"
                  >
                    <lucide-icon [img]="Bookmark" [class]="answer2BookmarkIconClass" />
                    <span>{{ isAnswer2Bookmarked() ? 'Saved' : 'Save' }}</span>
                  </button>
                </div>

                <div class="text-foreground/90 space-y-3 text-sm leading-relaxed">
                  <p>
                    Adding to Marcus's answer: another huge benefit of isolating
                    <code class="bg-muted text-foreground rounded px-1.5 py-0.5 font-mono text-xs"
                      >&lt;name&gt;.variants.ts</code
                    >
                    is for monorepos or dual-framework setups.
                  </p>
                  <p>
                    When you have both Vue and React registry components (like in UIPKGE), the variant definitions can
                    be shared verbatim in a shared token package without bringing in any Vue SFC or JSX compiler
                    dependencies. This keeps design tokens consistent across both stacks.
                  </p>
                </div>

                <div class="flex items-center justify-between border-t pt-3">
                  <div class="flex items-center gap-2">
                    <button
                      ui-button
                      variant="outline"
                      size="sm"
                      class="h-7 gap-1.5 text-xs"
                      (click)="voteAnswer2('up')"
                    >
                      <lucide-icon [img]="ThumbsUp" class="size-3" />
                      <span>Helpful ({{ answer2Score() }})</span>
                    </button>
                    <button
                      ui-button
                      variant="ghost"
                      size="sm"
                      class="text-muted-foreground h-7 gap-1.5 text-xs"
                      (click)="shareThread()"
                    >
                      <lucide-icon [img]="Share2" class="size-3" />
                      <span>Share</span>
                    </button>
                  </div>
                  <span class="text-muted-foreground text-xs">14 students found this helpful</span>
                </div>
              </div>
            </div>
          </article>

          @for (ans of customAnswers(); track ans.id) {
            <article class="bg-card rounded-xl border p-5 shadow-xs sm:p-6">
              <div class="flex items-start gap-4 sm:gap-6">
                <div class="flex flex-col items-center">
                  <button
                    ui-button
                    variant="outline"
                    size="icon"
                    [class]="customUpClass(ans)"
                    aria-label="Upvote answer"
                    (click)="voteCustomAnswer(ans.id, 'up')"
                  >
                    <lucide-icon [img]="ChevronUp" class="size-5" />
                  </button>
                  <span class="text-foreground my-1.5 font-mono text-base font-bold tabular-nums">{{ ans.score }}</span>
                  <button
                    ui-button
                    variant="outline"
                    size="icon"
                    [class]="customDownClass(ans)"
                    aria-label="Downvote answer"
                    (click)="voteCustomAnswer(ans.id, 'down')"
                  >
                    <lucide-icon [img]="ChevronDown" class="size-5" />
                  </button>
                </div>
                <div class="min-w-0 flex-1 space-y-4">
                  <div class="flex items-center justify-between border-b pb-3.5">
                    <div class="flex items-center gap-3">
                      <ui-avatar class="size-10 border">
                        <ui-avatar-fallback class="bg-primary/10 text-primary text-xs font-semibold">{{
                          ans.avatarText
                        }}</ui-avatar-fallback>
                      </ui-avatar>
                      <div>
                        <div class="flex items-center gap-2">
                          <span class="text-foreground text-sm font-semibold">{{ ans.authorName }}</span>
                          <span ui-badge variant="secondary" class="text-xs">{{ ans.authorRole }}</span>
                        </div>
                        <p class="text-muted-foreground text-xs">{{ ans.postedTime }}</p>
                      </div>
                    </div>
                  </div>
                  <div class="text-foreground/90 text-sm leading-relaxed whitespace-pre-wrap">{{ ans.content }}</div>
                </div>
              </div>
            </article>
          }

          <section class="bg-card overflow-hidden rounded-xl border shadow-xs">
            <div class="bg-muted/40 border-b px-5 py-3">
              <h3 class="text-foreground text-base font-bold tracking-tight">Post Your Answer</h3>
              <p class="text-muted-foreground text-xs">
                Provide thorough explanations, actionable code examples, and reference architectural best practices.
              </p>
            </div>
            <div class="space-y-3.5 p-5">
              <div class="text-muted-foreground flex flex-wrap items-center gap-1 border-b pb-2.5">
                <button
                  ui-button
                  variant="ghost"
                  size="icon"
                  class="size-7"
                  aria-label="Format bold"
                  (click)="applyFormat('bold')"
                >
                  <lucide-icon [img]="Bold" class="size-3.5" />
                </button>
                <button
                  ui-button
                  variant="ghost"
                  size="icon"
                  class="size-7"
                  aria-label="Format italic"
                  (click)="applyFormat('italic')"
                >
                  <lucide-icon [img]="Italic" class="size-3.5" />
                </button>
                <button
                  ui-button
                  variant="ghost"
                  size="icon"
                  class="size-7"
                  aria-label="Insert code block"
                  (click)="applyFormat('code')"
                >
                  <lucide-icon [img]="Code" class="size-3.5" />
                </button>
                <button
                  ui-button
                  variant="ghost"
                  size="icon"
                  class="size-7"
                  aria-label="Insert link"
                  (click)="applyFormat('link')"
                >
                  <lucide-icon [img]="Link2" class="size-3.5" />
                </button>
                <button
                  ui-button
                  variant="ghost"
                  size="icon"
                  class="size-7"
                  aria-label="Insert list"
                  (click)="applyFormat('list')"
                >
                  <lucide-icon [img]="List" class="size-3.5" />
                </button>
                <button
                  ui-button
                  variant="ghost"
                  size="icon"
                  class="size-7"
                  aria-label="Insert blockquote"
                  (click)="applyFormat('quote')"
                >
                  <lucide-icon [img]="Quote" class="size-3.5" />
                </button>
                <span class="text-muted-foreground ml-auto text-xs">Markdown syntax supported</span>
              </div>
              <ui-textarea
                [value]="replyDraft()"
                (valueChange)="replyDraft.set($event)"
                placeholder="Write your detailed answer with code blocks (e.g. \`\`\`ts ... \`\`\`)..."
                [rows]="6"
                class="resize-y font-sans text-sm"
              />
              <div class="flex flex-wrap items-center justify-between gap-3 pt-1">
                <span class="text-muted-foreground text-xs"
                  >Draft saved automatically · Be constructive & cite official docs</span
                >
                <button
                  ui-button
                  class="gap-1.5 text-xs font-semibold"
                  [disabled]="!replyDraft().trim()"
                  (click)="handlePostAnswer()"
                >
                  <lucide-icon [img]="MessageSquare" class="size-3.5" />
                  Post Your Answer
                </button>
              </div>
            </div>
          </section>
        </main>

        <aside class="space-y-6 lg:col-span-4">
          <div ui-card>
            <div ui-card-header class="pb-3">
              <div class="flex items-center justify-between">
                <h3 ui-card-title class="text-sm font-semibold">Discussion Info</h3>
                <span ui-badge variant="outline" class="border-success/30 bg-success/10 text-success text-xs"
                  >Resolved</span
                >
              </div>
            </div>
            <div ui-card-content class="space-y-3 pt-0">
              <ui-separator />
              <dl class="space-y-2.5 text-xs">
                <div class="flex items-center justify-between gap-2">
                  <dt class="text-muted-foreground">Course</dt>
                  <dd class="text-foreground font-medium">CS-314 Frontend Arch</dd>
                </div>
                <div class="flex items-center justify-between gap-2">
                  <dt class="text-muted-foreground">Category</dt>
                  <dd class="text-foreground font-medium">Vue 3.5 & Vite</dd>
                </div>
                <div class="flex items-center justify-between gap-2">
                  <dt class="text-muted-foreground">Total Upvotes</dt>
                  <dd class="text-foreground font-medium tabular-nums">+145 upvotes</dd>
                </div>
                <div class="flex items-center justify-between gap-2">
                  <dt class="text-muted-foreground">Total Views</dt>
                  <dd class="text-foreground font-medium tabular-nums">1,420</dd>
                </div>
                <div class="flex items-center justify-between gap-2">
                  <dt class="text-muted-foreground">Participants</dt>
                  <dd class="text-foreground font-medium">4 contributors</dd>
                </div>
                <div class="flex items-center justify-between gap-2">
                  <dt class="text-muted-foreground">Accepted By</dt>
                  <dd class="text-foreground font-medium">David Chen (Author)</dd>
                </div>
              </dl>
            </div>
          </div>

          <div ui-card>
            <div ui-card-header class="pb-3">
              <h3 ui-card-title class="text-sm font-semibold">Related Discussions</h3>
              <p ui-card-description class="text-xs">Similar questions from this course cohort</p>
            </div>
            <div ui-card-content class="space-y-3 pt-0">
              <ui-separator />
              <ul class="space-y-3 text-xs">
                @for (related of relatedDiscussions; track related.title; let last = $last) {
                  <li class="space-y-1">
                    <a
                      href="#"
                      class="text-foreground hover:text-primary flex items-start justify-between gap-2 font-medium transition-colors"
                    >
                      <span>{{ related.title }}</span>
                      <lucide-icon [img]="ArrowUpRight" class="text-muted-foreground size-3.5 shrink-0" />
                    </a>
                    <div class="text-muted-foreground flex items-center gap-2">
                      @if (related.status === 'Solved') {
                        <span class="bg-success/10 text-success rounded px-1.5 py-0.5 text-xs font-medium">Solved</span>
                      } @else {
                        <span class="bg-muted text-foreground rounded px-1.5 py-0.5 text-xs font-medium">Open</span>
                      }
                      <span class="tabular-nums">{{ related.upvotes }}</span>
                      <span>· {{ related.answers }}</span>
                    </div>
                  </li>
                  @if (!last) {
                    <ui-separator />
                  }
                }
              </ul>
            </div>
          </div>

          <div ui-card>
            <div ui-card-header class="pb-3">
              <div class="flex items-center gap-2">
                <lucide-icon [img]="BookOpen" class="text-primary size-4" />
                <h3 ui-card-title class="text-sm font-semibold">Forum Etiquette</h3>
              </div>
            </div>
            <div ui-card-content class="space-y-2.5 pt-0 text-xs">
              <ui-separator />
              <div class="text-muted-foreground space-y-2">
                @for (rule of etiquetteItems; track rule) {
                  <div class="flex items-start gap-2">
                    <lucide-icon [img]="Check" class="text-primary mt-0.5 size-3.5 shrink-0" />
                    <span>{{ rule }}</span>
                  </div>
                }
              </div>
            </div>
          </div>

          <div class="hidden items-center gap-2">
            <lucide-icon [img]="Award" />
          </div>
        </aside>
      </div>
    </div>
  `,
})
export class UiPeerDiscussionForumComponent {
  protected readonly ArrowUpRight = ArrowUpRight
  protected readonly Award = Award
  protected readonly Bell = Bell
  protected readonly BellOff = BellOff
  protected readonly Bold = Bold
  protected readonly BookOpen = BookOpen
  protected readonly Bookmark = Bookmark
  protected readonly Check = Check
  protected readonly CheckCircle2 = CheckCircle2
  protected readonly ChevronDown = ChevronDown
  protected readonly ChevronUp = ChevronUp
  protected readonly Code = Code
  protected readonly Copy = Copy
  protected readonly Eye = Eye
  protected readonly Flag = Flag
  protected readonly Italic = Italic
  protected readonly Link2 = Link2
  protected readonly List = List
  protected readonly MessageSquare = MessageSquare
  protected readonly Plus = Plus
  protected readonly Quote = Quote
  protected readonly Share2 = Share2
  protected readonly Tag = Tag
  protected readonly ThumbsUp = ThumbsUp

  @Input('class') className?: string

  protected readonly tags = ['#architecture', '#reka-ui', '#typescript', '#cva']
  protected readonly relatedDiscussions = relatedDiscussions
  protected readonly etiquetteItems = etiquetteItems

  readonly questionScore = signal(42)
  readonly questionVote = signal<ForumVote>(null)
  readonly isQuestionBookmarked = signal(false)
  readonly isSubscribed = signal(true)
  readonly copiedQuestionSnippet = signal(false)
  readonly copiedLink = signal(false)

  readonly answer1Score = signal(89)
  readonly answer1Vote = signal<ForumVote>(null)
  readonly isAnswer1Bookmarked = signal(false)
  readonly copiedAnswer1Snippet = signal(false)

  readonly answer2Score = signal(14)
  readonly answer2Vote = signal<ForumVote>(null)
  readonly isAnswer2Bookmarked = signal(false)

  readonly replyDraft = signal('')
  readonly customAnswers = signal<CommunityAnswer[]>([])

  readonly totalAnswersCount = computed(() => 2 + this.customAnswers().length)

  private timers: ReturnType<typeof setTimeout>[] = []

  constructor() {
    inject(DestroyRef).onDestroy(() => this.timers.forEach((t) => clearTimeout(t)))
  }

  get rootClass(): string {
    return cn('bg-background text-foreground w-full space-y-6', this.className)
  }

  private voteBtn(base: string, vote: ForumVote, type: 'up' | 'down', activeUp: string, activeDown: string): string {
    if (vote === 'up') return cn(base, activeUp)
    if (vote === 'down') return cn(base, activeDown)
    return cn(base, 'text-muted-foreground hover:text-foreground')
  }

  get questionUpClass(): string {
    return this.voteBtn(
      'size-9 rounded-lg border',
      this.questionVote(),
      'up',
      'border-primary bg-primary/10 text-primary hover:bg-primary/20',
      'text-muted-foreground hover:text-foreground',
    ).replace(
      'text-muted-foreground hover:text-foreground',
      this.questionVote() === 'up' ? '' : 'text-muted-foreground hover:text-foreground',
    )
  }

  get questionDownClass(): string {
    return cn(
      'size-9 rounded-lg border',
      this.questionVote() === 'down'
        ? 'border-destructive bg-destructive/10 text-destructive hover:bg-destructive/20'
        : 'text-muted-foreground hover:text-foreground',
    )
  }

  get questionBookmarkClass(): string {
    return cn(
      'mt-3 size-8 rounded-md',
      this.isQuestionBookmarked() ? 'text-primary' : 'text-muted-foreground hover:text-foreground',
    )
  }

  get questionBookmarkIconClass(): string {
    return cn('size-4', this.isQuestionBookmarked() && 'fill-current')
  }

  get subscribeClass(): string {
    return cn('h-7 gap-1.5 text-xs', this.isSubscribed() ? 'text-primary' : 'text-muted-foreground')
  }

  get answer1UpClass(): string {
    return cn(
      'size-9 rounded-lg border',
      this.answer1Vote() === 'up'
        ? 'border-success bg-success/10 text-success hover:bg-success/20'
        : 'text-muted-foreground hover:text-foreground',
    )
  }

  get answer1DownClass(): string {
    return cn(
      'size-9 rounded-lg border',
      this.answer1Vote() === 'down'
        ? 'border-destructive bg-destructive/10 text-destructive hover:bg-destructive/20'
        : 'text-muted-foreground hover:text-foreground',
    )
  }

  get answer1BookmarkIconClass(): string {
    return cn('size-3.5', this.isAnswer1Bookmarked() && 'fill-primary text-primary')
  }

  get answer2UpClass(): string {
    return cn(
      'size-9 rounded-lg border',
      this.answer2Vote() === 'up'
        ? 'border-primary bg-primary/10 text-primary hover:bg-primary/20'
        : 'text-muted-foreground hover:text-foreground',
    )
  }

  get answer2DownClass(): string {
    return cn(
      'size-9 rounded-lg border',
      this.answer2Vote() === 'down'
        ? 'border-destructive bg-destructive/10 text-destructive hover:bg-destructive/20'
        : 'text-muted-foreground hover:text-foreground',
    )
  }

  get answer2BookmarkIconClass(): string {
    return cn('size-3.5', this.isAnswer2Bookmarked() && 'fill-primary text-primary')
  }

  customUpClass(ans: CommunityAnswer): string {
    return cn(
      'size-9 rounded-lg border',
      ans.userVote === 'up'
        ? 'border-primary bg-primary/10 text-primary'
        : 'text-muted-foreground hover:text-foreground',
    )
  }

  customDownClass(ans: CommunityAnswer): string {
    return cn(
      'size-9 rounded-lg border',
      ans.userVote === 'down'
        ? 'border-destructive bg-destructive/10 text-destructive'
        : 'text-muted-foreground hover:text-foreground',
    )
  }

  voteQuestion(type: 'up' | 'down'): void {
    const next = applyVote(this.questionScore(), this.questionVote(), type)
    this.questionScore.set(next.score)
    this.questionVote.set(next.vote)
  }

  voteAnswer1(type: 'up' | 'down'): void {
    const next = applyVote(this.answer1Score(), this.answer1Vote(), type)
    this.answer1Score.set(next.score)
    this.answer1Vote.set(next.vote)
  }

  voteAnswer2(type: 'up' | 'down'): void {
    const next = applyVote(this.answer2Score(), this.answer2Vote(), type)
    this.answer2Score.set(next.score)
    this.answer2Vote.set(next.vote)
  }

  applyFormat(type: ComposerFormat): void {
    const prev = this.replyDraft()
    if (type === 'bold') this.replyDraft.set(prev ? `${prev} **bold text**` : '**bold text**')
    else if (type === 'italic') this.replyDraft.set(prev ? `${prev} *italic text*` : '*italic text*')
    else if (type === 'code')
      this.replyDraft.set(
        prev ? `${prev}\n\`\`\`ts\n// your code snippet here\n\`\`\`\n` : '```ts\n// your code snippet here\n```\n',
      )
    else if (type === 'link')
      this.replyDraft.set(prev ? `${prev} [link title](https://example.com)` : '[link title](https://example.com)')
    else if (type === 'list')
      this.replyDraft.set(prev ? `${prev}\n- Key insight 1\n- Key insight 2` : '- Key insight 1\n- Key insight 2')
    else this.replyDraft.set(prev ? `${prev}\n> Quote from documentation` : '> Quote from documentation')
  }

  handlePostAnswer(): void {
    const text = this.replyDraft().trim()
    if (!text) return
    const newAnswer: CommunityAnswer = {
      id: `ans-${Date.now()}`,
      authorName: 'Alex Rivera',
      authorRole: 'Peer Student',
      avatarText: 'AR',
      postedTime: 'Just now',
      score: 1,
      content: text,
      userVote: 'up',
    }
    this.customAnswers.update((prev) => [...prev, newAnswer])
    this.replyDraft.set('')
  }

  voteCustomAnswer(id: string, type: 'up' | 'down'): void {
    this.customAnswers.update((prev) =>
      prev.map((ans) => {
        if (ans.id !== id) return ans
        const next = applyVote(ans.score, ans.userVote ?? null, type)
        return { ...ans, score: next.score, userVote: next.vote }
      }),
    )
  }

  private flash(setter: (v: boolean) => void): void {
    setter(true)
    this.timers.push(setTimeout(() => setter(false), 2000))
  }

  copyQuestionCode(): void {
    this.flash((v) => this.copiedQuestionSnippet.set(v))
  }

  copyAnswer1Code(): void {
    this.flash((v) => this.copiedAnswer1Snippet.set(v))
  }

  shareThread(): void {
    this.flash((v) => this.copiedLink.set(v))
  }
}

src/app/components/blocks/peer-discussion-forum/index.ts0.1 kB

Raw manifest:https://uipkge.dev/r/angular/peer-discussion-forum.json

Change language