merge: forge-announce workflow

Adds .github/workflows/forge-announce.yml — auto-posts a bilingual
changelog embed to the Hellion Forge #changelog Discord channel on
every vX.Y.Z tag push. DE bullets come from .github/forge-posts/
<tag>.md (frontmatter: subtitle, versionsnatur), EN block from
HellionChat.yaml.

Hard cap 5500 chars total. Major releases that exceed get a clear
manual-post message and stay off the auto-channel.

Decoupled from release.yml — failures in either workflow don't
block the other.
This commit is contained in:
2026-05-05 15:34:13 +02:00
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name: Forge Announce
# Triggered when a vX.Y.Z tag is pushed. Reads .github/forge-posts/<tag>.md
# (Frontmatter + DE bullet body) and the matching English block from
# HellionChat/HellionChat.yaml, builds a Discord-Webhook embed and posts
# it to the Hellion Forge #changelog channel.
#
# Decoupled from release.yml: a fail here does not block the GitHub
# release, and a fail there does not block the announce. Spec lives in
# the Vault under "Hellion Chat Forge-Auto-Announce Spec".
#
# Security: the only user-controlled inputs that enter run-steps are the
# tag name and the frontmatter values from a repo-internal markdown file.
# Tag name is read via env: (TAG_NAME, $env:TAG_NAME) and validated against
# ^v\d+\.\d+\.\d+$ before any string interpolation. Frontmatter values are
# parsed by regex with explicit length caps. No webhook event payload data
# (issue titles, PR bodies, commit messages, etc.) flows into run-steps.
on:
push:
tags:
- 'v*'
workflow_dispatch:
inputs:
tag:
description: 'Existing tag to (re)post, e.g. v1.1.0'
required: true
type: string
permissions:
contents: read
jobs:
announce:
name: Post changelog to Hellion Forge
runs-on: ubuntu-latest
# The DISCORD_FORGE_WEBHOOK secret lives under Settings → Environments
# → Webhook (case-sensitive). Without this declaration the secret is
# not in scope for the job.
environment: Webhook
timeout-minutes: 5
steps:
# On push:tags github.ref points at the tag commit; on workflow_dispatch
# the user supplies the tag explicitly. Always check out that tag so
# the yaml + forge-posts file are read from the tagged tree, not main.
- name: Checkout
uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
with:
ref: ${{ github.event.inputs.tag || github.ref }}
# Build embed-payload as a JSON file on disk. PowerShell-Core (pwsh)
# ships pre-installed on ubuntu-latest so we get the same scripting
# patterns release.yml uses on windows-latest. Tag is read via env: to
# treat it as a string variable rather than inline shell text, and
# validated against the semver regex before any interpolation.
- name: Build embed payload
id: build
shell: pwsh
env:
TAG_NAME: ${{ github.event.inputs.tag || github.ref_name }}
run: |
$tag = $env:TAG_NAME
if ($tag -notmatch '^v\d+\.\d+\.\d+$') {
throw "V1: Refusing to announce non-semver tag: $tag"
}
$version = $tag.Substring(1)
# ---------- Forge-Post-Datei lesen ----------
$forgePath = ".github/forge-posts/$tag.md"
if (-not (Test-Path $forgePath)) {
throw "V2: Forge-Post-Datei für $tag fehlt unter .github/forge-posts/. Datei vor dem Tag anlegen, dann Tag re-pushen oder workflow_dispatch."
}
$forgeRaw = Get-Content -Path $forgePath -Raw
# Frontmatter (--- … ---) am Datei-Anfang
if ($forgeRaw -notmatch '(?s)\A---\s*\r?\n(.*?)\r?\n---\s*\r?\n(.*)\z') {
throw "V3: Frontmatter (---) fehlt oder ist defekt in $forgePath"
}
$fmText = $matches[1]
$deBody = $matches[2].Trim()
$subtitle = $null
$versionsnatur = $null
foreach ($line in ($fmText -split "`r?`n")) {
if ($line -match '^subtitle:\s*"?([^"]*)"?\s*$') { $subtitle = $matches[1] }
if ($line -match '^versionsnatur:\s*"?([^"]*)"?\s*$') { $versionsnatur = $matches[1] }
}
if ([string]::IsNullOrWhiteSpace($subtitle)) { throw "V3: Frontmatter-Feld 'subtitle' fehlt in $forgePath" }
if ([string]::IsNullOrWhiteSpace($versionsnatur)) { throw "V3: Frontmatter-Feld 'versionsnatur' fehlt in $forgePath" }
if ($subtitle.Length -gt 60) { throw "V4: Frontmatter-Feld 'subtitle' überschreitet Limit ($($subtitle.Length) Char, max 60)" }
if ($versionsnatur.Length -gt 40) { throw "V4: Frontmatter-Feld 'versionsnatur' überschreitet Limit ($($versionsnatur.Length) Char, max 40)" }
if ([string]::IsNullOrWhiteSpace($deBody)) { throw "V3: DE-Body fehlt in $forgePath" }
# ---------- EN-Block aus HellionChat.yaml ziehen ----------
# 1:1 Pattern aus release.yml — gleicher Header-Marker, gleiches
# Trailer-Verhalten. Bei Drift die zwei Workflows synchron halten.
$yamlPath = "HellionChat/HellionChat.yaml"
$raw = Get-Content -Path $yamlPath -Raw
$marker = "changelog: |-"
$idx = $raw.IndexOf($marker)
if ($idx -lt 0) { throw "V5: changelog-Block nicht gefunden in $yamlPath" }
$afterMarker = $raw.Substring($idx + $marker.Length)
$changelogBody = (($afterMarker -split "`r?`n") | ForEach-Object {
if ($_ -match '^ ') { $_.Substring(2) } else { $_ }
}) -join "`n"
$header = "**Hellion Chat $version"
$start = $changelogBody.IndexOf($header)
if ($start -lt 0) {
throw "V5: No changelog entry for version $version found in $yamlPath. Update the changelog block before tagging."
}
$rest = $changelogBody.Substring($start)
$nextHdr = $rest.IndexOf("`n`n**Hellion Chat ", 1)
$trailer = $rest.IndexOf("`n`n---")
if ($nextHdr -ge 0 -and ($trailer -lt 0 -or $nextHdr -lt $trailer)) {
$enBlock = $rest.Substring(0, $nextHdr).TrimEnd()
} elseif ($trailer -ge 0) {
$enBlock = $rest.Substring(0, $trailer).TrimEnd()
} else {
$enBlock = $rest.TrimEnd()
}
# ---------- Char-Cap-Check (5500 Total auf title + description + footer) ----------
$title = "Hellion Chat $version — $subtitle"
$description = "**Deutsch**`n`n$deBody`n`n**English**`n`n$enBlock"
$footerText = "Hellion Forge · $versionsnatur"
$totalChars = $title.Length + $description.Length + $footerText.Length
if ($totalChars -gt 5500) {
throw "V6: Total char count $totalChars exceeds 5500 limit. Major-Release detected — please post manually via Bot/Multi-Embed (see forge style §8). Forge-Auto-Announce stays off for this tag."
}
Write-Host "Char-Cap OK: $totalChars / 5500"
# ---------- Embed-Payload bauen ----------
$payload = [ordered]@{
username = "Hellion Communication Admin"
avatar_url = "https://raw.githubusercontent.com/JonKazama-Hellion/HellionChat/main/HellionChat/images/icon.png"
content = "<@&1500489631555260446>"
allowed_mentions = [ordered]@{
parse = @()
roles = @("1500489631555260446")
}
embeds = @(
[ordered]@{
title = $title
url = "https://github.com/JonKazama-Hellion/HellionChat/releases/tag/$tag"
color = 12730636
description = $description
footer = [ordered]@{ text = $footerText }
timestamp = (Get-Date).ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fffZ")
}
)
}
$payloadJson = $payload | ConvertTo-Json -Depth 8 -Compress
# Ausgabe-Datei ohne trailing newline für sauberes curl --data-binary @-
[System.IO.File]::WriteAllText("$PWD/embed-payload.json", $payloadJson, [System.Text.UTF8Encoding]::new($false))
Write-Host "Payload size: $($payloadJson.Length) chars"
Write-Host "Embed title: $title"
Write-Host "Embed footer: $footerText"
# POST to the Hellion Forge changelog webhook. curl from PowerShell-Core
# so we can pipe the payload via stdin (--data-binary @-) and keep
# secrets out of process arg lists. One retry on 5xx, hard fail on 4xx.
- name: POST to Hellion Forge webhook
shell: pwsh
env:
DISCORD_FORGE_WEBHOOK: ${{ secrets.DISCORD_FORGE_WEBHOOK }}
run: |
if ([string]::IsNullOrEmpty($env:DISCORD_FORGE_WEBHOOK)) {
throw "V7: DISCORD_FORGE_WEBHOOK secret is empty. Check Settings → Environments → Webhook."
}
$payloadFile = "$PWD/embed-payload.json"
if (-not (Test-Path $payloadFile)) {
throw "Embed payload file missing — previous step did not produce embed-payload.json"
}
$maxAttempts = 2
$attempt = 0
while ($attempt -lt $maxAttempts) {
$attempt++
Write-Host "POST attempt $attempt of $maxAttempts"
$tmpResp = "$PWD/.webhook-response"
$tmpHeaders = "$PWD/.webhook-headers"
# --silent suppresses progress; --show-error prints errors so
# the workflow log shows what happened. -w prints HTTP status
# to stdout for inspection. -o captures body for diagnosis,
# -D captures headers.
$rawStatus = Get-Content $payloadFile -Raw |
curl --silent --show-error `
--header 'Content-Type: application/json' `
--data-binary '@-' `
-D $tmpHeaders `
-o $tmpResp `
-w '%{http_code}' `
"$env:DISCORD_FORGE_WEBHOOK"
$status = [int]$rawStatus
Write-Host "HTTP status: $status"
if ($status -ge 200 -and $status -lt 300) {
Write-Host "Forge announce POST succeeded."
exit 0
}
$bodySnippet = ""
if (Test-Path $tmpResp) {
$bodySnippet = (Get-Content $tmpResp -Raw -ErrorAction SilentlyContinue)
if ($bodySnippet.Length -gt 500) { $bodySnippet = $bodySnippet.Substring(0, 500) + " …" }
}
if ($status -ge 400 -and $status -lt 500) {
# E2: 4xx is permanent — webhook revoked, channel deleted,
# payload malformed. No retry.
throw "E2: Discord-Webhook returned permanent $status. Body: $bodySnippet"
}
# E1: 5xx (or transport-level fail with status 0) — wait + retry once
if ($attempt -lt $maxAttempts) {
Write-Host "Transient $status — sleeping 30s before retry."
Start-Sleep -Seconds 30
} else {
throw "E1: Discord-Webhook returned transient $status after $maxAttempts attempts. Body: $bodySnippet"
}
}