#!/usr/bin/env bash
# _env.sh — shared CI mirror env + tag-version helper. `source` this from other
# scripts; do not execute directly. Idempotent: only sets vars if not already
# provided by the environment (e.g. workflow-level overrides).

export GOPROXY="${GOPROXY:-https://goproxy.cn,direct}"
export PUB_HOSTED_URL="${PUB_HOSTED_URL:-https://pub.flutter-io.cn}"
export FLUTTER_STORAGE_BASE_URL="${FLUTTER_STORAGE_BASE_URL:-https://storage.flutter-io.cn}"

# Forgejo/Gitea repo coordinates (used by lib-forgejo.sh). Secrets
# FORGEJO_TOKEN / FORGEJO_URL are injected by the CI runner, not set here.
export FORGEJO_REPO="${FORGEJO_REPO:-wangjia/pangolin}"

# Ensure Homebrew tools are on PATH (macOS runners); harmless elsewhere.
case ":${PATH}:" in
  *":/opt/homebrew/bin:"*) ;;
  *) export PATH="/opt/homebrew/bin:${PATH}" ;;
esac

# ver_from_tag <prefix> <ref>
# Strips an optional "refs/tags/" prefix, then the "<prefix>-v" prefix,
# leaving a bare semver. Uses parameter expansion only (no command
# substitution). Examples:
#   ver_from_tag server server-v1.2.3          -> 1.2.3
#   ver_from_tag server refs/tags/server-v1.2.3 -> 1.2.3
ver_from_tag() {
  local prefix="$1" ref="$2"
  ref="${ref#refs/tags/}"
  ref="${ref#"${prefix}"-v}"
  printf '%s' "$ref"
}

# flutter_pub_get_retry — pub.flutter-io.cn 常被 GFW 抖断(socket error / exit 69),
# 让 flutter build 内隐式的 pub get 偶发失败(见 iOS build 曾因 google_fonts 拉包
# 断线而挂)。构建前显式预取 + 重试;成功后 build 命中缓存不再拉网。在 flutter
# 项目根目录调用。
flutter_pub_get_retry() {
  local i
  for i in 1 2 3 4 5; do
    if flutter pub get; then return 0; fi
    echo "==> flutter pub get 失败(第 ${i}/5 次,pub.flutter-io.cn 抖?),8s 后重试..." >&2
    sleep 8
  done
  echo "==> flutter pub get 5 次仍失败,放弃" >&2
  return 1
}