#!/usr/bin/env sh
# Pin an explicit, monotonic Android versionCode.
#
# `tauri android init` derives one from the semver in a way that is not
# monotonic across a version series: 0.1.0 and 0.0.10 can collide, and Android
# refuses to install an APK whose versionCode is not greater than the installed
# one. A rider who cannot update is a rider who stops updating.
#
#   code = 1000 + major * 10000 + minor * 100 + patch
#
# so 0.1.0 -> 1100, 0.1.3 -> 1103, 0.2.0 -> 1200, 1.0.0 -> 11000. Monotonic in
# semver order for any minor/patch below 100, which is well past where this
# project will ever get.
#
# The 1000 floor is not decoration: `tauri android init` writes versionCode=1000
# for 0.1.0 today, so anyone carrying a locally-built APK already has that
# number installed. A bare major/minor/patch code would be 100 — a *downgrade*,
# which Android refuses outright.
#
# POSIX sh: the runner's /bin/sh is dash. No here-strings, no \s in sed.
set -e

ROOT="$(cd "$(dirname "$0")/.." && pwd)"
PROPS="$ROOT/src-tauri/gen/android/app/tauri.properties"
CONF="$ROOT/src-tauri/tauri.conf.json"

[ -f "$PROPS" ] || { echo "❌ $PROPS not found — run 'cargo tauri android init' first" >&2; exit 1; }

VERSION=$(grep '"version"' "$CONF" | head -1 | sed -E 's/.*"version"[[:space:]]*:[[:space:]]*"([^"]+)".*/\1/')
MAJ=$(echo "$VERSION" | cut -d. -f1)
MIN=$(echo "$VERSION" | cut -d. -f2)
PAT=$(echo "$VERSION" | cut -d. -f3)
# Guard a malformed or short version so we can never emit code 0, which Android
# treats as "older than everything".
: "${MAJ:=0}" "${MIN:=0}" "${PAT:=0}"
CODE=$(( 1000 + MAJ * 10000 + MIN * 100 + PAT ))

echo "version=$VERSION -> versionCode=$CODE"
if grep -q '^tauri.android.versionCode=' "$PROPS"; then
  sed -i "s/^tauri.android.versionCode=.*/tauri.android.versionCode=$CODE/" "$PROPS"
else
  echo "tauri.android.versionCode=$CODE" >> "$PROPS"
fi
cat "$PROPS"