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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
REPO_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"
RUNTIME_DIR="$SCRIPT_DIR/.runtime"
ENV_FILE="${ELDER_ENV_FILE:-$REPO_DIR/.env}"

if [[ -f "$ENV_FILE" ]]; then
  # shellcheck disable=SC1090
  set -a; source "$ENV_FILE"; set +a
fi

: "${ELDER_DB_HOST:=127.0.0.1}"
: "${ELDER_DB_PORT:=3306}"
: "${ELDER_DB_NAME:=elder_yudao_local}"
: "${ELDER_DB_USER:=root}"
: "${ELDER_DB_PASSWORD:=}"
: "${ELDER_REDIS_HOST:=127.0.0.1}"
: "${ELDER_REDIS_PORT:=6379}"
: "${ELDER_REDIS_DATABASE:=15}"
: "${ELDER_REDIS_PASSWORD:=}"
: "${ELDER_SERVER_PORT:=48080}"
: "${ELDER_UI_PORT:=5173}"

if [[ ! "$ELDER_DB_NAME" =~ ^elder_yudao_[a-z0-9_]+$ ]]; then
  echo "ELDER_DB_NAME 必须是 elder_yudao_* 独立数据库。" >&2
  exit 1
fi

find_command() {
  local configured="$1"; shift
  if [[ -n "$configured" && -x "$configured" ]]; then
    printf '%s\n' "$configured"
    return 0
  fi
  local candidate
  for candidate in "$@"; do
    if command -v "$candidate" >/dev/null 2>&1; then
      command -v "$candidate"
      return 0
    fi
  done
  return 1
}

resolve_java() {
  if [[ -n "${JAVA_BIN:-}" && -x "$JAVA_BIN" ]]; then printf '%s\n' "$JAVA_BIN"; return; fi
  find_command '' java || {
    echo '未找到 Java。请安装 Java 8/11/17，并设置 JAVA_BIN。' >&2
    exit 1
  }
}

resolve_maven() {
  if [[ -n "${MAVEN_BIN:-}" && -x "$MAVEN_BIN" ]]; then printf '%s\n' "$MAVEN_BIN"; return; fi
  find_command '' mvn || {
    local bundled='/Applications/IntelliJ IDEA.app/Contents/plugins/maven/lib/maven3/bin/mvn'
    if [[ -x "$bundled" ]]; then printf '%s\n' "$bundled"; return; fi
    echo '未找到 Maven。请安装 Maven，或设置 MAVEN_BIN。' >&2
    exit 1
  }
}

resolve_node() {
  if [[ -n "${NODE_BIN:-}" && -x "$NODE_BIN" ]]; then printf '%s\n' "$NODE_BIN"; return; fi
  find_command '' node || {
    echo '未找到 Node.js 18+。请安装 Node.js，或设置 NODE_BIN。' >&2
    exit 1
  }
}

mysql_query() {
  local database="$1"; shift
  local mysql_bin
  mysql_bin="${MYSQL_BIN:-$(command -v mysql || true)}"
  if [[ -z "$mysql_bin" ]]; then
    echo '未找到 mysql 客户端。请安装 MySQL 8，并设置 MYSQL_BIN。' >&2
    exit 1
  fi
  MYSQL_PWD="$ELDER_DB_PASSWORD" "$mysql_bin" \
    --protocol=TCP --host="$ELDER_DB_HOST" --port="$ELDER_DB_PORT" \
    --user="$ELDER_DB_USER" --default-character-set=utf8mb4 \
    ${database:+--database="$database"} --batch --skip-column-names --execute="$1"
}

ensure_runtime_dir() { mkdir -p "$RUNTIME_DIR"; }