detect-latest-eclipse-steams.sh

#!/bin/bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/variables.sh"

echo "Fetching Eclipse release list from $RELEASE_XML"
XML="$(curl -fsSL "$RELEASE_XML")"

has_r_dir() {
  local stream="$1"
  local dir_url="$EPP_BASE/$stream/"

  curl -fsSL "$dir_url" | grep -qE 'href="R/"|>R/'
}

select_stable_r_stream() {
  local stream="$1"
  local url="$EPP_BASE/$stream/R/eclipse-cpp-$stream-R-linux-gtk-x86_64.tar.gz"
  local p2="https://download.eclipse.org/releases/$stream"

  echo "Checking stream directory for official R/: $stream"
  if ! has_r_dir "$stream"; then
    echo "⚠️ No official R/ directory found for $stream"
    return 1
  fi

  echo "Checking stable archive URL: $url"
  if ! curl -fsI "$url" >/dev/null; then
    echo "⚠️ R/ exists but archive is not reachable for $stream"
    return 1
  fi

  ECLIPSE_R_RELEASE="$stream"
  ECLIPSE_R_URL="$url"
  ECLIPSE_R_P2="$p2"
  return 0
}

mapfile -t ECLIPSE_R_RELEASES < <(
  printf '%s\n' "$XML" \
    | grep -oE '[0-9]{4}-[0-9]{2}/R([^A-Za-z0-9]|$)' \
    | sed -E 's|/R([^A-Za-z0-9].*)?$||' \
    | sort -r \
    | uniq \
    | head -n 2
)

# Latest milestone - optional
ECLIPSE_M_RELEASE="$(
  printf '%s\n' "$XML" \
    | grep -oE '[0-9]{4}-[0-9]{2}/M[0-9]+' \
    | sort -r \
    | head -n1 || true
)"

# Latest RC - optional
ECLIPSE_RC_RELEASE="$(
  printf '%s\n' "$XML" \
    | grep -oE '[0-9]{4}-[0-9]{2}/RC[0-9]+' \
    | sort -r \
    | head -n1 || true
)"

ECLIPSE_CASE3_STREAM="${ECLIPSE_M_RELEASE:-}"
if [[ -n "${ECLIPSE_RC_RELEASE:-}" ]]; then
  ECLIPSE_CASE3_STREAM="$ECLIPSE_RC_RELEASE"
fi

ECLIPSE_CASE3_URL=""
ECLIPSE_CASE3_P2=""

if [[ -n "${ECLIPSE_CASE3_STREAM:-}" ]]; then
  CASE3_STREAM="${ECLIPSE_CASE3_STREAM%/*}"   # YYYY-MM
  CASE3_TAG="${ECLIPSE_CASE3_STREAM#*/}"      # M* or RC*
  ECLIPSE_CASE3_URL="$EPP_BASE/$CASE3_STREAM/$CASE3_TAG/eclipse-cpp-$CASE3_STREAM-$CASE3_TAG-linux-gtk-x86_64.tar.gz"
  ECLIPSE_CASE3_P2="https://download.eclipse.org/releases/$CASE3_STREAM"
else
  echo "⚠️ No milestone or RC detected. Case 3 will be skipped."
fi

if [[ "${#ECLIPSE_R_RELEASES[@]}" -eq 0 ]]; then
  echo "❌ Could not detect any /R release"
  exit 1
fi

LATEST_R="${ECLIPSE_R_RELEASES[0]}"
PREVIOUS_R="${ECLIPSE_R_RELEASES[1]:-}"

if [[ -z "${ECLIPSE_M_RELEASE:-}" ]]; then
  echo "⚠️ No latest milestone detected (/M*)."
fi

if [[ -z "${ECLIPSE_RC_RELEASE:-}" ]]; then
  echo "⚠️ No latest RC detected (/RC*)."
fi

ECLIPSE_R_RELEASE=""
ECLIPSE_R_URL=""
ECLIPSE_R_P2=""

echo "Trying latest stable R stream: $LATEST_R"
if ! select_stable_r_stream "$LATEST_R"; then
  if [[ -n "${PREVIOUS_R:-}" ]]; then
    echo "Trying previous stable R stream: $PREVIOUS_R"
    if ! select_stable_r_stream "$PREVIOUS_R"; then
      echo "❌ Neither latest R nor previous R has a usable official archive"
      exit 1
    fi
  else
    echo "❌ No previous R stream found to fall back to"
    exit 1
  fi
fi

ECLIPSE_M_URL=""
ECLIPSE_M_P2=""

if [[ -n "${ECLIPSE_M_RELEASE:-}" ]]; then
  STREAM="${ECLIPSE_M_RELEASE%/*}"     # 2026-03
  M_TAG="${ECLIPSE_M_RELEASE#*/}"      # M2
  ECLIPSE_M_URL="$EPP_BASE/$STREAM/$M_TAG/eclipse-cpp-$STREAM-$M_TAG-linux-gtk-x86_64.tar.gz"
  ECLIPSE_M_P2="https://download.eclipse.org/releases/$STREAM"
fi

# Verify Case 3 URL exists - if unreachable, skip Case 3
if [[ -n "${ECLIPSE_CASE3_URL:-}" ]]; then
  if ! curl -fsI "$ECLIPSE_CASE3_URL" >/dev/null; then
    echo "⚠️ Case 3 pre-release archive not reachable. Case 3 will be skipped."
    ECLIPSE_CASE3_STREAM=""
    ECLIPSE_CASE3_URL=""
    ECLIPSE_CASE3_P2=""
  fi
fi

# -------- Espressif-IDE stable version (tags) --------
echo "Detecting latest *stable* Espressif-IDE tag..."
TAGS_JSON="$(curl -fsSL "$IEP_TAGS_API")"

ESP_IDE_TAG="$(
  printf '%s\n' "$TAGS_JSON" \
    | grep -oE '"name":[[:space:]]*"v?[0-9]+\.[0-9]+\.[0-9]+"' \
    | sed -E 's/.*"name":[[:space:]]*"([^"]+)".*/\1/' \
    | head -n1
)"

if [[ -z "${ESP_IDE_TAG:-}" ]]; then
  echo "❌ Could not detect stable Espressif-IDE tag (vX.Y.Z)"
  exit 1
fi

ESP_IDE_VERSION="${ESP_IDE_TAG#v}"
ESPRESSIF_IDE_URL="$ESP_IDE_BASE/Espressif-IDE-${ESP_IDE_VERSION}-linux.gtk.x86_64.tar.gz"

echo "Verifying Espressif-IDE archive exists..."
if ! curl -sfI "$ESPRESSIF_IDE_URL" >/dev/null; then
  echo "⚠️ Could not verify Espressif-IDE archive URL. Continuing anyway."
fi

export ECLIPSE_R_RELEASE ECLIPSE_R_URL ECLIPSE_R_P2
export ECLIPSE_M_RELEASE ECLIPSE_RC_RELEASE
export ECLIPSE_CASE3_STREAM ECLIPSE_CASE3_URL ECLIPSE_CASE3_P2
export ESP_IDE_VERSION ESPRESSIF_IDE_URL

echo "✅ Latest stable Eclipse: $ECLIPSE_R_RELEASE"
echo "✅ Stable URL: $ECLIPSE_R_URL"
echo "✅ Stable P2:  $ECLIPSE_R_P2"
echo "✅ Latest milestone Eclipse: ${ECLIPSE_M_RELEASE:-<none>}"
echo "✅ Latest RC Eclipse:        ${ECLIPSE_RC_RELEASE:-<none>}"
echo "✅ Case 3 pre-release pick:  ${ECLIPSE_CASE3_STREAM:-<none>}"
if [[ -n "${ECLIPSE_CASE3_STREAM:-}" ]]; then
  echo "✅ Case 3 URL: $ECLIPSE_CASE3_URL"
  echo "✅ Case 3 P2:  $ECLIPSE_CASE3_P2"
fi
echo "✅ Espressif-IDE version: $ESP_IDE_VERSION"
echo "✅ Espressif-IDE URL: $ESPRESSIF_IDE_URL"