#!/usr/bin/env bash

gh_target_fail() {
  echo "[错误] $1" >&2
  return 1
}

gh_target_resolve_repo_from_remote() {
  local remote_url=""
  local owner=""
  local repo=""

  remote_url="$(git config --get remote.origin.url || true)"
  if [[ -z "$remote_url" ]]; then
    gh_target_fail "无法从 git remote.origin.url 解析仓库"
    return 1
  fi

  if [[ "$remote_url" =~ ^git@github\.com:([^/]+)/(.+)\.git$ ]]; then
    owner="${BASH_REMATCH[1]}"
    repo="${BASH_REMATCH[2]}"
  elif [[ "$remote_url" =~ ^https://github\.com/([^/]+)/(.+)\.git$ ]]; then
    owner="${BASH_REMATCH[1]}"
    repo="${BASH_REMATCH[2]}"
  elif [[ "$remote_url" =~ ^https://github\.com/([^/]+)/(.+)$ ]]; then
    owner="${BASH_REMATCH[1]}"
    repo="${BASH_REMATCH[2]}"
  else
    gh_target_fail "不支持的 GitHub remote URL: ${remote_url}"
    return 1
  fi

  printf '%s/%s\n' "$owner" "$repo"
}

gh_target_resolve_project_from_url() {
  local url="$1"
  local owner=""
  local number=""
  local owner_type=""

  if [[ "$url" =~ ^https://github\.com/orgs/([^/]+)/projects/([0-9]+)(/.*)?$ ]]; then
    owner="${BASH_REMATCH[1]}"
    number="${BASH_REMATCH[2]}"
    owner_type="organization"
  elif [[ "$url" =~ ^https://github\.com/users/([^/]+)/projects/([0-9]+)(/.*)?$ ]]; then
    owner="${BASH_REMATCH[1]}"
    number="${BASH_REMATCH[2]}"
    owner_type="user"
  else
    gh_target_fail "无法解析 GitHub Project URL: ${url}"
    return 1
  fi

  printf '%s\t%s\t%s\n' "$owner" "$number" "$owner_type"
}

gh_target_resolve_content_from_url() {
  local url="$1"
  local repo=""
  local kind=""
  local number=""

  if [[ "$url" =~ ^https://github\.com/([^/]+/[^/]+)/issues/([0-9]+)(/.*)?$ ]]; then
    repo="${BASH_REMATCH[1]}"
    number="${BASH_REMATCH[2]}"
    kind="issue"
  elif [[ "$url" =~ ^https://github\.com/([^/]+/[^/]+)/pull/([0-9]+)(/.*)?$ ]]; then
    repo="${BASH_REMATCH[1]}"
    number="${BASH_REMATCH[2]}"
    kind="pull"
  else
    gh_target_fail "无法解析 GitHub 内容 URL: ${url}"
    return 1
  fi

  printf '%s\t%s\t%s\n' "$repo" "$kind" "$number"
}