#!/usr/bin/env bash
# Run Android wallet smoke against several build / published variants.
#
# Default order:
#   1) stable-self     — rebuild STABLE_TAG (always WARN on fail)
#   2) published       — current F-Droid suggested APK
#   3) older-*         — previous release tags (APK and/or self-build) if available
#   4) master          — tip (always WARN on fail)
#
# Severity (released apps):
#   Age ≤ BLOCKER_MAX_AGE_DAYS (default **14**) → **BLOCKER** on fail (FAIL_FAST)
#   Age  > 14 days (or unknown)                → **WARN** only
#   master / pure self-builds without release age → WARN
#
# Env:
#   STABLE_TAG, STABLE_APK_URL, STABLE_APK_NAME
#   MASTER_BRANCH, FIX_BRANCH
#   VARIANTS          default: stable-self,published,older,master
#   INCLUDE_OLDER=1   expand token "older" (default 1)
#   OLDER_TAG_COUNT   how many recent wallet-* tags to consider (default 4)
#   BLOCKER_MAX_AGE_DAYS  default 14
#   PUBLISHED_FORCE_BLOCKER=1  always treat current published as blocker (default 0 = age rule)
#   FAIL_FAST=1, GUI=0, STACK=…
#
set -euo pipefail
ROOT=$(cd "$(dirname "$0")" && pwd)
# shellcheck source=lib_android_env.sh
. "$ROOT/lib_android_env.sh"
# shellcheck source=lib_release_age.sh
. "$ROOT/lib_release_age.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}"
: "${FIX_BRANCH:=dev/hernani-inference/fix-bank-withdraw-auto-exchange}"
: "${VARIANTS:=stable-self,published,older,master}"
: "${INCLUDE_OLDER:=1}"
: "${OLDER_TAG_COUNT:=4}"
: "${BLOCKER_MAX_AGE_DAYS:=14}"
: "${PUBLISHED_FORCE_BLOCKER:=0}"
: "${FAIL_FAST:=1}"
: "${GUI:=0}"
: "${STACK:=auto}"
: "${TALER_ANDROID_SRC:=$HOME/taler/taler-android}"
export TALER_ANDROID_SRC BLOCKER_MAX_AGE_DAYS

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=$STABLE_TAG  BLOCKER_MAX_AGE_DAYS=$BLOCKER_MAX_AGE_DAYS  OLDER_TAG_COUNT=$OLDER_TAG_COUNT" | tee -a "$SUMMARY"
echo "out: $MATRIX_OUT" | tee -a "$SUMMARY"

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"

# --- expand VARIANTS (token "older" → concrete older-pub / older-self entries) ---
expand_variants() {
  local raw="$1"
  local -a out=()
  local v tag vn age sev stable_vn
  stable_vn="${STABLE_TAG#wallet-}"

  IFS=',' read -r -a toks <<<"$raw"
  for v in "${toks[@]}"; do
    v=$(echo "$v" | tr -d '[:space:]')
    [ -n "$v" ] || continue
    if [ "$v" = "older" ] || [ "$v" = "older-releases" ]; then
      [ "$INCLUDE_OLDER" = "1" ] || continue
      local -a tags=()
      mapfile -t tags < <(list_wallet_release_tags "$OLDER_TAG_COUNT" 2>/dev/null || true)
      local t
      for t in "${tags[@]}"; do
        [ -n "$t" ] || continue
        # skip current stable tag (already covered by published / stable-self)
        [ "$t" = "$STABLE_TAG" ] && continue
        vn="${t#wallet-}"
        age=$(release_age_days "$t" 2>/dev/null || echo "")
        sev=$(severity_from_age_days "$age")
        echo "  older candidate $t age_days=${age:-?} severity=$sev" | tee -a "$SUMMARY"
        # Prefer published APK when downloadable; always also allow self-build token
        local meta apk_vc apk_url
        meta=$(fdroid_apk_for_version_name "$vn" 2>/dev/null || true)
        if [ -n "$meta" ]; then
          apk_vc="${meta%%|*}"
          apk_url="${meta#*|}"
          if fdroid_apk_exists "$apk_url"; then
            out+=("older-pub:${vn}:${apk_vc}:${sev}")
          else
            echo "  (no F-Droid APK for $vn at $apk_url — self-build only)" | tee -a "$SUMMARY"
            out+=("older-self:${t}:${sev}")
          fi
        else
          out+=("older-self:${t}:${sev}")
        fi
      done
    else
      out+=("$v")
    fi
  done
  printf '%s\n' "${out[@]}"
}

mapfile -t VLIST < <(expand_variants "$VARIANTS")
echo "expanded variants: ${VLIST[*]}" | tee -a "$SUMMARY"

declare -a RESULTS=()
declare -a WARNINGS=()
overall=0

severity_for_published_current() {
  if [ "${PUBLISHED_FORCE_BLOCKER}" = "1" ]; then
    echo blocker
    return
  fi
  local days
  days=$(release_age_days "$STABLE_TAG" 2>/dev/null || true)
  severity_from_age_days "$days"
}

run_published_apk() {
  local label="$1"
  local apk_url="$2"
  local apk_name="$3"
  local sev="$4"
  local out="$MATRIX_OUT/$label"
  mkdir -p "$out"
  echo "" | tee -a "$SUMMARY"
  echo "-------- variant: $label (F-Droid APK) [$(echo "$sev" | tr 'a-z' 'A-Z')] --------" | tee -a "$SUMMARY"
  echo "  url=$apk_url" | tee -a "$SUMMARY"
  local smoke="$ROOT/run-android-pay-smoke.sh"
  [ "$GUI" = "1" ] && smoke="$ROOT/run-android-gui-smoke.sh"
  local strict=1
  [ "$sev" = "warn" ] && strict="${SMOKE_STRICT_WARN:-0}"
  [ "$sev" = "blocker" ] && strict="${SMOKE_STRICT:-1}"
  set +e
  env STACK="$STACK" \
    APK_URL="$apk_url" \
    APK_NAME="$apk_name" \
    APK_PATH="" \
    PKG=net.taler.wallet.fdroid \
    OUT_DIR="$out" \
    SERIAL="$SERIAL" \
    AUTO_START_EMULATOR=0 \
    SMOKE_STRICT="$strict" \
    "$smoke"
  local rc=$?
  set -e
  echo "$label exit=$rc severity=$sev" | tee -a "$SUMMARY"
  echo "$label $rc $sev $apk_url" >>"$MATRIX_OUT/results.tsv"
  return "$rc"
}

run_selfbuild() {
  local label="$1"
  local ref="$2"
  local sev="${3:-warn}"
  local out="$MATRIX_OUT/$label"
  mkdir -p "$out"
  echo "" | tee -a "$SUMMARY"
  echo "-------- variant: $label (self-build ref=$ref) [$(echo "$sev" | tr 'a-z' 'A-Z')] --------" | tee -a "$SUMMARY"
  local strict="${SMOKE_STRICT:-1}"
  [ "$sev" = "warn" ] && strict="${SMOKE_STRICT_SELF:-0}"
  [ "$sev" = "blocker" ] && strict="${SMOKE_STRICT:-1}"
  set +e
  env STACK="$STACK" \
    BRANCH="$ref" \
    LABEL="$label" \
    GUI="$GUI" \
    OUT_DIR="$out" \
    SERIAL="$SERIAL" \
    ANDROID_SERIAL="$SERIAL" \
    AUTO_START_EMULATOR=0 \
    PKG=net.taler.wallet.fdroid.debug \
    SMOKE_STRICT="$strict" \
    TALER_ANDROID_SRC="$TALER_ANDROID_SRC" \
    "$ROOT/run-android-build-and-smoke.sh"
  local rc=$?
  set -e
  echo "$label (ref=$ref) exit=$rc severity=$sev" | tee -a "$SUMMARY"
  echo "$label $rc $ref $sev" >>"$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"
}

record_result() {
  local v="$1" rc="$2" sev="$3"
  if [ "$rc" -eq 0 ]; then
    RESULTS+=("$v:OK($sev)")
    return
  fi
  case "$sev" in
    warn)
      echo "WARN: $v failed rc=$rc — not a blocker; continuing" | tee -a "$SUMMARY"
      WARNINGS+=("$v:$rc")
      RESULTS+=("$v:WARN($rc)")
      ;;
    blocker)
      echo "BLOCKER: $v failed rc=$rc (release within ${BLOCKER_MAX_AGE_DAYS}d window)" | tee -a "$SUMMARY"
      RESULTS+=("$v:BLOCKER($rc)")
      overall=1
      if [ "$FAIL_FAST" = "1" ]; then
        echo "FAIL_FAST: stopping after blocker $v" | tee -a "$SUMMARY"
        return 2
      fi
      ;;
    soft)
      echo "FAIL: $v rc=$rc" | tee -a "$SUMMARY"
      RESULTS+=("$v:FAIL($rc)")
      overall=1
      if [ "$FAIL_FAST" = "1" ]; then
        echo "FAIL_FAST: stopping after $v" | tee -a "$SUMMARY"
        return 2
      fi
      ;;
  esac
  return 0
}

for raw in "${VLIST[@]}"; do
  v=$(echo "$raw" | tr -d '[:space:]')
  [ -n "$v" ] || continue
  rc=0
  sev=warn
  stop=0

  case "$v" in
    published|fdroid|stable-published)
      sev=$(severity_for_published_current)
      age=$(release_age_days "$STABLE_TAG" 2>/dev/null || echo "?")
      echo "published current: tag=$STABLE_TAG age_days=$age → severity=$sev" | tee -a "$SUMMARY"
      run_published_apk "published" "$STABLE_APK_URL" "$STABLE_APK_NAME" "$sev" || rc=$?
      ;;
    stable-self|stable|self-stable|release-self)
      # rebuild of stable: always warn (toolchain), age does not make self-build a blocker
      sev=warn
      run_selfbuild "stable-self" "$STABLE_TAG" warn || rc=$?
      ;;
    master|main)
      sev=warn
      run_selfbuild "master" "$MASTER_BRANCH" warn || rc=$?
      ;;
    fix|fix-branch|inference)
      sev=soft
      run_selfbuild "fix" "$FIX_BRANCH" soft || rc=$?
      ;;
    older-pub:*)
      # older-pub:VERSION:VC:SEV
      IFS=':' read -r _ vn apk_vc sev <<<"$v"
      : "${sev:=warn}"
      label="older-pub-${vn}"
      url="https://f-droid.org/repo/net.taler.wallet.fdroid_${apk_vc}.apk"
      name="net.taler.wallet.fdroid_${apk_vc}.apk"
      age=$(release_age_days "wallet-${vn}" 2>/dev/null || echo "?")
      echo "older published $vn age_days=$age severity=$sev" | tee -a "$SUMMARY"
      run_published_apk "$label" "$url" "$name" "$sev" || rc=$?
      v="$label"
      ;;
    older-self:*)
      # older-self:TAG:SEV  or older-self:TAG
      IFS=':' read -r _ tag sev <<<"$v"
      : "${sev:=$(severity_for_tag "$tag")}"
      label="older-self-${tag}"
      age=$(release_age_days "$tag" 2>/dev/null || echo "?")
      echo "older self-build $tag age_days=$age severity=$sev" | tee -a "$SUMMARY"
      run_selfbuild "$label" "$tag" "$sev" || rc=$?
      v="$label"
      ;;
    *)
      # raw git ref — warn unless looks like wallet-X.Y and young
      if [[ "$v" =~ ^wallet-[0-9] ]]; then
        sev=$(severity_for_tag "$v")
        run_selfbuild "ref-${v}" "$v" "$sev" || rc=$?
      else
        sev=warn
        run_selfbuild "ref-${v//\//-}" "$v" warn || rc=$?
      fi
      ;;
  esac

  record_result "$v" "$rc" "$sev" || stop=$?
  [ "$stop" = "2" ] && break
done

echo "" | tee -a "$SUMMARY"
echo "=== matrix done (overall=$overall) ===" | tee -a "$SUMMARY"
echo "rule: released app age ≤ ${BLOCKER_MAX_AGE_DAYS}d → BLOCKER on fail; older → WARN" | tee -a "$SUMMARY"
for r in "${RESULTS[@]}"; do
  echo "  $r" | tee -a "$SUMMARY"
done
if [ "${#WARNINGS[@]}" -gt 0 ]; then
  echo "warnings (non-blocking):" | tee -a "$SUMMARY"
  for w in "${WARNINGS[@]}"; do
    echo "  WARN $w" | tee -a "$SUMMARY"
  done
fi
echo ""
echo "Artifacts: $MATRIX_OUT"
exit "$overall"