#!/usr/bin/env bash
# Run Android wallet smoke against **several build variants** so a single
# "weird" developer tree or a bad local build cannot be the only sample.
#
# Default matrix (gate order — fail → hard stop when FAIL_FAST=1):
#   1) **stable-self** — rebuild release **tag** (same source as published)
#   2) **published**   — F-Droid stable APK (what users install)
#   3) **master**      — rebuild origin/master (only if 1–2 pass with FAIL_FAST)
#
# Why stable-self in addition to published?
#   Rare, but a published APK *or* a one-off developer build can be odd
#   (wrong flags, dirty tree, wrong ABI). Rebuilding the release tag on *this*
#   machine with the same script path as master isolates "our toolchain" vs
#   "F-Droid binary" vs "current master source".
#
# Usage:
#   ./run-android-variant-matrix.sh
#   STACK=goa ./run-android-variant-matrix.sh
#   VARIANTS=master,stable-self ./run-android-variant-matrix.sh
#   VARIANTS=published,stable-self,master,fix GUI=1 ./run-android-variant-matrix.sh
#   STABLE_TAG=wallet-1.6.1 MASTER_BRANCH=master ./run-android-variant-matrix.sh
#
# Env:
#   STABLE_TAG       default wallet-1.6.1 (must match published F-Droid release)
#   STABLE_APK_URL   published APK (same as pay-smoke default)
#   MASTER_BRANCH    default master
#   FIX_BRANCH       inference fix branch (variant "fix")
#   VARIANTS         comma list: published,stable-self,master,fix
#   GUI=1            use gui-smoke instead of pay-smoke after each build
#   FAIL_FAST=1      stop on first non-zero smoke (default 0 = run all)
#   MATRIX_OUT       summary dir (default out-matrix-<timestamp>)
#
set -euo pipefail
ROOT=$(cd "$(dirname "$0")" && pwd)
# shellcheck source=lib_android_env.sh
. "$ROOT/lib_android_env.sh"

: "${STABLE_TAG:=wallet-1.6.1}"
: "${STABLE_APK_URL:=https://f-droid.org/repo/net.taler.wallet.fdroid_854.apk}"
: "${STABLE_APK_NAME:=net.taler.wallet.fdroid_854.apk}"
: "${MASTER_BRANCH:=master}"
: "${FIX_BRANCH:=dev/hernani-inference/fix-bank-withdraw-auto-exchange}"
# Gate: stable self-build → published F-Droid; then master. FAIL_FAST default on.
: "${VARIANTS:=stable-self,published,master}"
: "${FAIL_FAST:=1}"
: "${GUI:=0}"
: "${STACK:=auto}"

TS=$(date +%Y%m%d-%H%M%S)
MATRIX_OUT="${MATRIX_OUT:-$ROOT/out-matrix-$TS}"
mkdir -p "$MATRIX_OUT"
SUMMARY="$MATRIX_OUT/SUMMARY.txt"
: >"$SUMMARY"

echo "=== Android variant matrix ===" | tee -a "$SUMMARY"
echo "STACK=$STACK  GUI=$GUI  headless=${EMULATOR_HEADLESS}  variants=$VARIANTS" | tee -a "$SUMMARY"
echo "STABLE_TAG=$STABLE_TAG  MASTER_BRANCH=$MASTER_BRANCH" | tee -a "$SUMMARY"
echo "out: $MATRIX_OUT" | tee -a "$SUMMARY"

# Ensure device once (headless AVD by default)
android_ensure_device || {
  echo "no adb device — start ./start-android-emulator.sh --wait" >&2
  exit 3
}
export SERIAL ANDROID_SERIAL
echo "device: $SERIAL" | tee -a "$SUMMARY"

IFS=',' read -r -a VLIST <<<"$VARIANTS"
declare -a RESULTS=()
overall=0

run_published() {
  local out="$MATRIX_OUT/published"
  mkdir -p "$out"
  echo "" | tee -a "$SUMMARY"
  echo "-------- variant: published (F-Droid stable binary) --------" | tee -a "$SUMMARY"
  local smoke="$ROOT/run-android-pay-smoke.sh"
  [ "$GUI" = "1" ] && smoke="$ROOT/run-android-gui-smoke.sh"
  set +e
  env STACK="$STACK" \
    APK_URL="$STABLE_APK_URL" \
    APK_NAME="$STABLE_APK_NAME" \
    APK_PATH="" \
    PKG=net.taler.wallet.fdroid \
    OUT_DIR="$out" \
    SERIAL="$SERIAL" \
    AUTO_START_EMULATOR=0 \
    "$smoke"
  local rc=$?
  set -e
  echo "published exit=$rc" | tee -a "$SUMMARY"
  echo "published $rc" >>"$MATRIX_OUT/results.tsv"
  return "$rc"
}

run_selfbuild() {
  local label="$1"
  local ref="$2"
  local out="$MATRIX_OUT/$label"
  mkdir -p "$out"
  echo "" | tee -a "$SUMMARY"
  echo "-------- variant: $label (self-build ref=$ref) --------" | tee -a "$SUMMARY"
  set +e
  env STACK="$STACK" \
    BRANCH="$ref" \
    LABEL="$label" \
    GUI="$GUI" \
    OUT_DIR="$out" \
    SERIAL="$SERIAL" \
    ANDROID_SERIAL="$SERIAL" \
    AUTO_START_EMULATOR=0 \
    PKG=net.taler.wallet.fdroid.debug \
    "$ROOT/run-android-build-and-smoke.sh"
  local rc=$?
  set -e
  echo "$label (ref=$ref) exit=$rc" | tee -a "$SUMMARY"
  echo "$label $rc $ref" >>"$MATRIX_OUT/results.tsv"
  if [ -f "$out/build-meta.txt" ]; then
    echo "build-meta:" | tee -a "$SUMMARY"
    cat "$out/build-meta.txt" | tee -a "$SUMMARY"
  fi
  return "$rc"
}

for raw in "${VLIST[@]}"; do
  v=$(echo "$raw" | tr -d '[:space:]')
  [ -n "$v" ] || continue
  rc=0
  case "$v" in
    published|fdroid|stable-published)
      run_published || rc=$?
      ;;
    stable-self|stable|self-stable|release-self)
      run_selfbuild "stable-self" "$STABLE_TAG" || rc=$?
      ;;
    master|main)
      run_selfbuild "master" "$MASTER_BRANCH" || rc=$?
      ;;
    fix|fix-branch|inference)
      run_selfbuild "fix" "$FIX_BRANCH" || rc=$?
      ;;
    *)
      # treat as raw git ref / label
      run_selfbuild "ref-${v//\//-}" "$v" || rc=$?
      ;;
  esac
  RESULTS+=("$v:$rc")
  if [ "$rc" -ne 0 ]; then
    overall=1
    if [ "$FAIL_FAST" = "1" ]; then
      echo "FAIL_FAST: stopping after $v rc=$rc" | tee -a "$SUMMARY"
      break
    fi
  fi
done

echo "" | tee -a "$SUMMARY"
echo "=== matrix done (overall=$overall) ===" | tee -a "$SUMMARY"
for r in "${RESULTS[@]}"; do
  echo "  $r" | tee -a "$SUMMARY"
done
echo ""
echo "Compare OUT_DIR trees under $MATRIX_OUT"
echo "Intent: published vs stable-self should behave similarly;"
echo "        master may diverge (new features / fixes)."
echo "A odd stable-self vs published suggests toolchain or unsigned-debug differences;"
echo "a odd master-only failure suggests tip breakage, not F-Droid stable."
exit "$overall"