#!/usr/bin/env bash
set -euo pipefail

ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
BASE_FILE="$ROOT_DIR/VERSION_BASE"
SEQ_FILE="$ROOT_DIR/BUILD_SEQ"
VER_FILE="$ROOT_DIR/VERSION"

# 初始化基础版本
if [[ ! -f "$BASE_FILE" ]]; then
  if [[ -f "$VER_FILE" ]]; then
    cur="$(tr -d ' \n\r\t' < "$VER_FILE")"
    # 取 +build 之前的基础版本
    base="${cur%%+build.*}"
    [[ -z "$base" ]] && base="0.1.0"
    echo "$base" > "$BASE_FILE"
  else
    echo "0.1.0" > "$BASE_FILE"
  fi
fi

# 初始化构建序号
if [[ ! -f "$SEQ_FILE" ]]; then
  echo "0" > "$SEQ_FILE"
fi

base="$(tr -d ' \n\r\t' < "$BASE_FILE")"
seq="$(tr -d ' \n\r\t' < "$SEQ_FILE")"

if ! [[ "$seq" =~ ^[0-9]+$ ]]; then
  seq=0
fi

seq=$((seq + 1))
new_ver="${base}+build.${seq}"

echo "$seq" > "$SEQ_FILE"
echo "$new_ver" > "$VER_FILE"

echo "$new_ver"