#!/usr/bin/env bash
# Build GNU Taler Android wallet from source at a git **ref**, then run the same
# adb deep-link (or GUI) smoke as run-android-pay-smoke.sh.
#
# Source (default): $HOME/taler/taler-android
# Build:            ./gradlew :wallet:assembleFdroidDebug
# Package id:       net.taler.wallet.fdroid.debug
#
# Typical refs:
#   BRANCH=master                         # tip of master
#   BRANCH=wallet-1.6.1                   # published stable **tag** (self-build)
#   BRANCH=dev/hernani-inference/fix-…   # GOA automation fix branch
#
# For a multi-variant matrix (master + stable self-build + published APK):
#   ./run-android-variant-matrix.sh
#
# Usage:
#   ./run-android-build-and-smoke.sh
#   BRANCH=master STACK=goa ./run-android-build-and-smoke.sh
#   BRANCH=wallet-1.6.1 LABEL=stable-self ./run-android-build-and-smoke.sh
#   SKIP_PULL=1 BRANCH=master ./run-android-build-and-smoke.sh
#
set -euo pipefail
ROOT=$(cd "$(dirname "$0")" && pwd)
SMOKE="$ROOT/run-android-pay-smoke.sh"
SRC="${TALER_ANDROID_SRC:-$HOME/taler/taler-android}"
SKIP_PULL="${SKIP_PULL:-0}"
# Prefer existing inference fix branch for GOA withdraw (spinner/exchange resolve).
# Matrix uses BRANCH=master and BRANCH=$STABLE_TAG explicitly.
BRANCH="${BRANCH:-dev/hernani-inference/fix-bank-withdraw-auto-exchange}"
# Optional human label for logs / artifact names (default = sanitized BRANCH)
LABEL="${LABEL:-}"
VARIANT="${VARIANT:-fdroidDebug}"
export ANDROID_HOME="${ANDROID_HOME:-$HOME/Android/Sdk}"
export ANDROID_SDK_ROOT="${ANDROID_SDK_ROOT:-$ANDROID_HOME}"

if [ ! -x "$SRC/gradlew" ]; then
  echo "taler-android not found at $SRC (set TALER_ANDROID_SRC=…)" >&2
  exit 2
fi
if [ ! -d "$ANDROID_HOME" ]; then
  echo "ANDROID_HOME missing: $ANDROID_HOME" >&2
  exit 2
fi

printf 'sdk.dir=%s\n' "$ANDROID_HOME" >"$SRC/local.properties"

# --- checkout REF (branch, origin/branch, or tag) --------------------------------
cd "$SRC"
if [ -d .git ]; then
  git fetch origin --tags 2>/dev/null || git fetch origin 2>/dev/null || true
  REF="$BRANCH"
  checked=0
  if [ -n "$REF" ]; then
    if git rev-parse --verify "refs/tags/${REF}" >/dev/null 2>&1; then
      echo "checkout tag ${REF} (stable / release self-build)"
      git checkout -f "refs/tags/${REF}"
      checked=1
      SKIP_PULL=1
    elif git rev-parse --verify "origin/${REF}" >/dev/null 2>&1; then
      echo "checkout origin/${REF}"
      git checkout -B "$REF" "origin/${REF}" 2>/dev/null || git checkout "$REF" 2>/dev/null || true
      checked=1
    elif git rev-parse --verify "${REF}" >/dev/null 2>&1; then
      echo "checkout ${REF}"
      git checkout -f "$REF"
      checked=1
    else
      echo "WARN: ref '${REF}' not found locally after fetch — staying on current HEAD" >&2
    fi
  fi
  if [ "$SKIP_PULL" != "1" ] && [ "$checked" = "1" ]; then
    # only pull real branches, never tags
    if git symbolic-ref -q HEAD >/dev/null 2>&1; then
      br=$(git rev-parse --abbrev-ref HEAD)
      git pull --ff-only origin "$br" 2>/dev/null || true
    fi
  fi
fi

COMMIT=$(git rev-parse --short=12 HEAD 2>/dev/null || echo unknown)
HEAD_DESC=$(git describe --tags --always 2>/dev/null || echo "$COMMIT")
BR_NOW=$(git rev-parse --abbrev-ref HEAD 2>/dev/null || echo detached)
if [ -z "$LABEL" ]; then
  LABEL=$(printf '%s' "$BRANCH" | tr '/:' '--' | tr -c 'A-Za-z0-9._-' '-' | cut -c1-48)
fi
echo "source: $SRC @ $COMMIT ($HEAD_DESC)  ref=$BRANCH  label=$LABEL  head=$BR_NOW"
echo "variant: $VARIANT"

# Map VARIANT → gradle task
case "$VARIANT" in
  fdroidDebug|FdroidDebug) task=assembleFdroidDebug ;;
  fdroidRelease|FdroidRelease) task=assembleFdroidRelease ;;
  nightlyDebug|NightlyDebug) task=assembleNightlyDebug ;;
  googleDebug|GoogleDebug) task=assembleGoogleDebug ;;
  *)
    task="assemble$(printf '%s' "$VARIANT" | python3 -c 'import sys; s=sys.stdin.read().strip(); print(s[:1].upper()+s[1:] if s else "FdroidDebug")')"
    ;;
esac

# Low-RAM hosts: cap JVM
export GRADLE_OPTS="${GRADLE_OPTS:--Xmx1280m -Dorg.gradle.daemon=false -Dorg.gradle.workers.max=1}"
echo "gradle :wallet:$task …"
./gradlew ":wallet:$task" --no-daemon --max-workers="${GRADLE_MAX_WORKERS:-1}" \
  -Dorg.gradle.jvmargs="${GRADLE_JVMARGS:--Xmx1280m}"

# Prefer fdroid debug APK if multiple exist
APK=$(find "$SRC/wallet/build/outputs/apk" -path '*fdroid*debug*.apk' -type f 2>/dev/null | sort | tail -1)
if [ -z "$APK" ] || [ ! -f "$APK" ]; then
  APK=$(find "$SRC/wallet/build/outputs/apk" -name '*.apk' -type f 2>/dev/null | sort | tail -1)
fi
if [ -z "$APK" ] || [ ! -f "$APK" ]; then
  echo "no APK under wallet/build/outputs/apk" >&2
  exit 4
fi
echo "built apk: $APK ($(wc -c <"$APK") bytes)"

PKG="${PKG:-}"
if [ -z "$PKG" ] && command -v aapt >/dev/null 2>&1; then
  PKG=$(aapt dump badging "$APK" 2>/dev/null | sed -n "s/^package: name='\([^']*\)'.*/\1/p" | head -1)
fi
if [ -z "$PKG" ] && command -v aapt2 >/dev/null 2>&1; then
  PKG=$(aapt2 dump badging "$APK" 2>/dev/null | sed -n "s/^package: name='\([^']*\)'.*/\1/p" | head -1)
fi
: "${PKG:=net.taler.wallet.fdroid.debug}"

mkdir -p "$ROOT/apks" "$ROOT/out"
STAMP_APK="$ROOT/apks/wallet-${LABEL}-${COMMIT}.apk"
cp -f "$APK" "$STAMP_APK"
echo "copied → $STAMP_APK"
{
  echo "label=$LABEL"
  echo "ref=$BRANCH"
  echo "commit=$COMMIT"
  echo "describe=$HEAD_DESC"
  echo "apk=$STAMP_APK"
  echo "pkg=$PKG"
  echo "task=$task"
} | tee "$ROOT/out/build-${LABEL}.txt"
echo "$COMMIT" >"$ROOT/out/build-commit.txt"
echo "$APK" >"$ROOT/out/build-apk-path.txt"

export APK_PATH="$STAMP_APK"
export APK_NAME
APK_NAME="$(basename "$STAMP_APK")"
export PKG
export OUT_DIR="${OUT_DIR:-$ROOT/out-source-$LABEL}"
mkdir -p "$OUT_DIR"
cp -f "$ROOT/out/build-${LABEL}.txt" "$OUT_DIR/build-meta.txt" 2>/dev/null || true

SMOKE_CMD="$SMOKE"
if [ "${GUI:-0}" = "1" ]; then
  SMOKE_CMD="$ROOT/run-android-gui-smoke.sh"
  case "$OUT_DIR" in
    *-gui) ;;
    *) OUT_DIR="${OUT_DIR}-gui"; export OUT_DIR; mkdir -p "$OUT_DIR" ;;
  esac
fi
echo "=== smoke label=$LABEL PKG=$PKG GUI=${GUI:-0} OUT_DIR=$OUT_DIR ==="
# Do not exec: allow matrix wrapper to run multiple variants
set +e
env APK_DIR="$ROOT/apks" APK_NAME="$APK_NAME" APK_PATH="$APK_PATH" PKG="$PKG" OUT_DIR="$OUT_DIR" \
  "$SMOKE_CMD"
rc=$?
set -e
echo "=== smoke label=$LABEL exit=$rc ==="
exit "$rc"