re-work update forgejo script

scripts/update-forgejo.sh

@@ -1,27 +1,100 @@
 #!/usr/bin/env bash
+set -euo pipefail
 
-if [ -z "$1" ]; then
-    echo "Usage: $0 <version>"
-    echo "Example: $0 11.0.10"
-    exit 1
+# ── helpers ────────────────────────────────────────────────────────────────────
+
+die() { echo "Error: $*" >&2; exit 1; }
+
+# Returns the latest vX.Y.Z tag for a given X.Y prefix (or overall latest if no prefix)
+fetch_latest_version() {
+    local prefix="$1"   # e.g. "11.0" or "" for absolute latest
+    local tags
+
+    tags=$(curl -fsSL \
+        "https://codeberg.org/api/v1/repos/forgejo/forgejo/tags?limit=50" \
+        2>/dev/null) || die "Could not reach Codeberg API — check your connection."
+
+    # Extract tag names, filter to release tags (vX.Y.Z, no pre-release suffix)
+    local versions
+    versions=$(echo "$tags" | grep -oP '"name"\s*:\s*"\Kv[0-9]+\.[0-9]+\.[0-9]+"' \
+        | tr -d '"' | sort -V)
+
+    if [[ -z "$prefix" ]]; then
+        echo "$versions" | tail -1
+    else
+        echo "$versions" | grep "^v${prefix}\." | tail -1
     fi
+}
 
-VERSION="$1"
+# ── detect architecture ────────────────────────────────────────────────────────
 
 case "$(uname -m)" in
     x86_64)  ARCH="amd64" ;;
     aarch64) ARCH="arm64" ;;
     armv7l)  ARCH="arm-6" ;;
-    *)
-        echo "Unsupported architecture: $(uname -m)"
-        exit 1
-        ;;
+    *) die "Unsupported architecture: $(uname -m)" ;;
 esac
 
-BINARY="forgejo-${VERSION}-linux-${ARCH}"
+# ── version prompt ─────────────────────────────────────────────────────────────
+
+echo "Fetching latest Forgejo release…"
+LATEST_OVERALL=$(fetch_latest_version "")
+LATEST_OVERALL="${LATEST_OVERALL#v}"   # strip leading 'v'
+
+echo
+echo "Latest available release: ${LATEST_OVERALL}"
+echo
+read -rp "Version to install [MAJOR.MINOR or MAJOR.MINOR.PATCH, Enter = ${LATEST_OVERALL}]: " INPUT
+INPUT="${INPUT:-$LATEST_OVERALL}"
+
+# Normalise: strip a leading 'v' if the user typed one
+INPUT="${INPUT#v}"
+
+# Determine if the user gave a full version (X.Y.Z) or a partial one (X.Y)
+if [[ "$INPUT" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+    # Full version supplied — use as-is
+    VERSION="$INPUT"
+elif [[ "$INPUT" =~ ^[0-9]+\.[0-9]+$ ]]; then
+    # Partial (X.Y) — resolve the latest patch on that line
+    echo "Resolving latest patch for ${INPUT}.x…"
+    RESOLVED=$(fetch_latest_version "$INPUT")
+    [[ -z "$RESOLVED" ]] && die "No releases found for ${INPUT}.x"
+    VERSION="${RESOLVED#v}"
+    echo "→ Using ${VERSION}"
+else
+    die "Unrecognised version format '${INPUT}'. Use X.Y or X.Y.Z"
+fi
+
+# ── confirm ────────────────────────────────────────────────────────────────────
+
+BINARY="forgejo-${VERSION}-linux-${ARCH}"
+echo
+echo "  Version : ${VERSION}"
+echo "  Binary  : ${BINARY}"
+echo "  Arch    : ${ARCH}"
+echo
+read -rp "Proceed with installation? [Y/n]: " CONFIRM
+CONFIRM="${CONFIRM:-Y}"
+[[ "$CONFIRM" =~ ^[Yy]$ ]] || { echo "Aborted."; exit 0; }
+
+# ── download & install ─────────────────────────────────────────────────────────
+
+URL="https://codeberg.org/forgejo/forgejo/releases/download/v${VERSION}/${BINARY}"
+echo
+echo "Downloading ${URL}…"
+wget --show-progress -q "$URL" || die "Download failed — is v${VERSION} a valid release?"
 
-wget "https://codeberg.org/forgejo/forgejo/releases/download/v${VERSION}/${BINARY}"
 chmod +x "$BINARY"
+
+echo "Stopping forgejo…"
 systemctl stop forgejo
+
+echo "Installing binary…"
 cp "$BINARY" /usr/local/bin/forgejo
+rm -f "$BINARY"   # clean up the downloaded file
+
+echo "Starting forgejo…"
 systemctl start forgejo
+
+echo
+echo "Done — Forgejo ${VERSION} is running."