feat: add discord release post workflow

Author: shuv1337

.github/workflows/discord-release.yml

@@ -0,0 +1,118 @@
+name: discord-release
+
+on:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  post:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Post shuvcode release notes to Discord
+        env:
+          DISCORD_TOKEN: ${{ secrets.DISCORD_TOKEN }}
+          DISCORD_CHANNEL_ID: "1473184731037433929"
+          GH_TOKEN: ${{ github.token }}
+          RELEASE_TAG: "v1.2.27"
+        run: |
+          set -euo pipefail
+
+          api="https://discord.com/api/v10"
+          ua='Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36'
+
+          call() {
+            local auth="$1"
+            local path="$2"
+            local method="${3:-GET}"
+            local body="${4:-}"
+            local bodyf code
+            bodyf=$(mktemp)
+            if [ -n "$body" ]; then
+              code=$(curl -sS --http1.1 -o "$bodyf" -w '%{http_code}' \
+                -X "$method" "$api$path" \
+                -H "Authorization: $auth" \
+                -H 'Accept: application/json' \
+                -H 'Content-Type: application/json' \
+                -H "User-Agent: $ua" \
+                --data "$body")
+            else
+              code=$(curl -sS --http1.1 -o "$bodyf" -w '%{http_code}' \
+                -X "$method" "$api$path" \
+                -H "Authorization: $auth" \
+                -H 'Accept: application/json' \
+                -H 'Content-Type: application/json' \
+                -H "User-Agent: $ua")
+            fi
+            printf '%s\n' "$code"
+            cat "$bodyf"
+            rm -f "$bodyf"
+          }
+
+          pick() {
+            local body code auth label entry
+            local pairs=(
+              "user|$DISCORD_TOKEN"
+              "bot|Bot $DISCORD_TOKEN"
+              "bearer|Bearer $DISCORD_TOKEN"
+            )
+            for entry in "${pairs[@]}"; do
+              IFS='|' read -r label auth <<< "$entry"
+              mapfile -t out < <(call "$auth" /users/@me)
+              code="${out[0]}"
+              body="$(printf '%s\n' "${out[@]:1}")"
+              echo "probe $label: $code" >&2
+              { printf '%s\n' "$body" | head -c 200; echo; } >&2
+              if [ "$code" = "200" ]; then
+                echo "selected auth: $label" >&2
+                printf '%s' "$auth"
+                return 0
+              fi
+            done
+            return 1
+          }
+
+          auth="$(pick)" || { echo "could not authenticate to Discord"; exit 1; }
+
+          mapfile -t out < <(call "$auth" "/channels/$DISCORD_CHANNEL_ID")
+          code="${out[0]}"
+          body="$(printf '%s\n' "${out[@]:1}")"
+          echo "channel lookup: $code"
+          printf '%s\n' "$body" | head -c 300; echo
+          [ "$code" = "200" ] || { echo "could not access target channel"; exit 1; }
+
+          export RELEASE_JSON="$(gh release view "$RELEASE_TAG" --repo Latitudes-Dev/shuvcode --json tagName,body,url)"
+          python - <<'PY' > /tmp/discord-payloads.jsonl
+import json, os
+
+data = json.loads(os.environ["RELEASE_JSON"])
+tag = data["tagName"]
+body = data.get("body") or ""
+url = data["url"]
+npm = f"https://www.npmjs.com/package/shuvcode/v/{tag.removeprefix('v')}"
+parts = [f"**shuvcode {tag}** release notes\n\n[GitHub Release](<{url}>) | [npm](<{npm}>)"]
+buf = ""
+limit = 1900
+for line in body.splitlines():
+    add = (line or "") + "\n"
+    if len(buf) + len(add) > limit:
+        if buf.strip():
+            parts.append(buf.rstrip())
+        buf = add
+    else:
+        buf += add
+if buf.strip():
+    parts.append(buf.rstrip())
+for part in parts:
+    print(json.dumps({"content": part}))
+PY
+
+          while IFS= read -r payload; do
+            mapfile -t out < <(call "$auth" "/channels/$DISCORD_CHANNEL_ID/messages" POST "$payload")
+            code="${out[0]}"
+            body="$(printf '%s\n' "${out[@]:1}")"
+            echo "post: $code"
+            printf '%s\n' "$body" | head -c 300; echo
+            [[ "$code" = "200" || "$code" = "201" ]] || { echo "post failed"; exit 1; }
+          done < /tmp/discord-payloads.jsonl