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

# 简化 openim_sdk_core_ios 私有 Pod 发版流程：
# 1. 可选：替换 OpenIMCore.xcframework
# 2. 更新 openim_sdk_core_ios.podspec 中的 s.version
# 3. 可选：执行 pod lib lint
# 4. git commit / tag / push
# 5. 可选：推送到私有 Specs 仓库（pod repo push）
#
# 用法：
#   ./release_pod.sh
#   ./release_pod.sh 0.18.0
#   ./release_pod.sh 0.18.0 /path/to/OpenIMCore.xcframework
#
# 默认会从 openim_sdk_core_ios.podspec 读取当前版本并自动 +1 minor 作为新 tag，
# 例如 0.17.0 -> 0.18.0。
# 默认会从 ../open-im-sdk-core/build/OpenIMCore.xcframework 拷贝 framework。
#
# 常用环境变量：
#   SKIP_LINT=1                         跳过 pod lib lint
#   LINT_ARGS="--allow-warnings"         自定义 lint 参数，默认 --allow-warnings
#   SKIP_GIT=1                          只更新文件，不 commit/tag/push
#   COMMIT_MSG="release 0.18.0"          自定义 commit message
#   PRIVATE_SPEC_REPO="your-spec-repo"  执行 pod repo push your-spec-repo openim_sdk_core_ios.podspec
#   POD_REPO_PUSH_ARGS="--allow-warnings" 自定义 pod repo push 参数

PODSPEC="openim_sdk_core_ios.podspec"
FRAMEWORK_DIR="openim_sdk_core_ios/frameworks"
FRAMEWORK_NAME="OpenIMCore.xcframework"
# 默认 xcframework 来源：当前 pod 仓库上级目录的同级 open-im-sdk-core/build
DEFAULT_XCFRAMEWORK_SRC="../open-im-sdk-core/build/${FRAMEWORK_NAME}"

usage() {
  cat <<EOF
用法：
  $0 [version] [OpenIMCore.xcframework路径]

示例：
  $0
  $0 0.18.0
  $0 0.18.0 ~/Downloads/OpenIMCore.xcframework

说明：
  不传 version 时，自动从 openim_sdk_core_ios.podspec 读取当前版本并 +1 minor，中间版本号增加。
  例如当前是 0.17.0，则默认发布 0.18.0。

  不传 OpenIMCore.xcframework 路径时，默认使用：
  ../open-im-sdk-core/build/OpenIMCore.xcframework

环境变量：
  SKIP_LINT=1                         跳过 pod lib lint
  LINT_ARGS="--allow-warnings"         pod lib lint 参数
  SKIP_GIT=1                          跳过 git commit/tag/push
  COMMIT_MSG="release <version>"       自定义提交信息
  PRIVATE_SPEC_REPO="repo-name"       推送私有 Specs 仓库
  POD_REPO_PUSH_ARGS="--allow-warnings" pod repo push 参数
EOF
}

log() {
  printf '\033[1;32m[release_pod]\033[0m %s\n' "$*"
}

fail() {
  printf '\033[1;31m[release_pod][ERROR]\033[0m %s\n' "$*" >&2
  exit 1
}

run() {
  log "$*"
  "$@"
}

VERSION="${1:-}"
XCFRAMEWORK_SRC="${2:-$DEFAULT_XCFRAMEWORK_SRC}"

[[ -f "$PODSPEC" ]] || fail "未找到 $PODSPEC，请在仓库根目录执行脚本"

if [[ -z "$VERSION" ]]; then
  VERSION="$(python3 - "$PODSPEC" <<'PY'
import re
import sys
from pathlib import Path

podspec = Path(sys.argv[1])
text = podspec.read_text()
match = re.search(r"s\.version\s*=\s*['\"]([^'\"]+)['\"]", text)
if not match:
    raise SystemExit(f"未能在 {podspec} 中找到 s.version")
current = match.group(1)
parts = current.split(".")
if len(parts) != 3 or not all(part.isdigit() for part in parts):
    raise SystemExit(f"当前版本号不支持自动递增：{current}，请手动传入版本号，例如 0.18.0")
major, minor, patch = map(int, parts)
print(f"{major}.{minor + 1}.0")
PY
)"
  log "未传版本号，自动从 $PODSPEC 递增得到：$VERSION"
fi

if ! [[ "$VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+([-.][0-9A-Za-z.-]+)?$ ]]; then
  fail "版本号格式不正确：${VERSION}，例如 0.18.0"
fi

[[ -d "$XCFRAMEWORK_SRC" ]] || fail "xcframework 路径不存在：${XCFRAMEWORK_SRC}"
[[ "$(basename "$XCFRAMEWORK_SRC")" == "$FRAMEWORK_NAME" ]] || fail "请传入 ${FRAMEWORK_NAME} 目录"

log "替换 ${FRAMEWORK_DIR}/${FRAMEWORK_NAME}，来源：${XCFRAMEWORK_SRC}"
rm -rf "$FRAMEWORK_DIR/$FRAMEWORK_NAME"
mkdir -p "$FRAMEWORK_DIR"
cp -R "$XCFRAMEWORK_SRC" "$FRAMEWORK_DIR/"

log "更新 ${PODSPEC} 版本号为 ${VERSION}"
python3 - "$PODSPEC" "$VERSION" <<'PY'
import re
import sys
from pathlib import Path

podspec = Path(sys.argv[1])
version = sys.argv[2]
text = podspec.read_text()
new_text, count = re.subn(
    r"(s\.version\s*=\s*)['\"][^'\"]+['\"]",
    rf"\1'{version}'",
    text,
    count=1,
)
if count != 1:
    raise SystemExit(f"未能在 {podspec} 中找到唯一的 s.version")
podspec.write_text(new_text)
PY

if [[ "${SKIP_LINT:-0}" != "1" ]]; then
  if ! command -v pod >/dev/null 2>&1; then
    fail "未安装 CocoaPods，或设置 SKIP_LINT=1 跳过 lint"
  fi
  # shellcheck disable=SC2206
  LINT_ARGS_ARRAY=(${LINT_ARGS:---allow-warnings})
  run pod lib lint "$PODSPEC" "${LINT_ARGS_ARRAY[@]}"
else
  log "已跳过 pod lib lint"
fi

if [[ "${SKIP_GIT:-0}" != "1" ]]; then
  git diff --quiet -- "$PODSPEC" "$FRAMEWORK_DIR" && fail "没有检测到 podspec/framework 变更，无需发版"

  if git rev-parse "$VERSION" >/dev/null 2>&1; then
    fail "tag 已存在：$VERSION"
  fi

  run git add "$PODSPEC" "$FRAMEWORK_DIR"
  run git commit -m "${COMMIT_MSG:-release $VERSION}"
  run git tag "$VERSION"
  run git push origin HEAD
  run git push origin "$VERSION"
else
  log "已跳过 git commit/tag/push"
fi

if [[ -n "${PRIVATE_SPEC_REPO:-}" ]]; then
  if ! command -v pod >/dev/null 2>&1; then
    fail "未安装 CocoaPods，无法 pod repo push"
  fi
  # shellcheck disable=SC2206
  POD_REPO_PUSH_ARGS_ARRAY=(${POD_REPO_PUSH_ARGS:---allow-warnings})
  run pod repo push "$PRIVATE_SPEC_REPO" "$PODSPEC" "${POD_REPO_PUSH_ARGS_ARRAY[@]}"
fi

log "完成：$VERSION"