feat: ship install.sh as static asset on mp2rss.com

Exposes scripts/install.sh from mp2rss-cli at https://mp2rss.com/install.sh
via VitePress public/ pipeline. Keep this file in sync with mp2rss-cli's
scripts/install.sh on each release.

Author: areyoubugcoder

docs/public/install.sh

@@ -0,0 +1,188 @@
+#!/bin/sh
+# mp2rss-cli installer.
+#
+#   curl -fsSL https://mp2rss.com/install.sh | sh
+#   curl -fsSL https://mp2rss.com/install.sh | INSTALL_DIR=$HOME/bin sh
+#   curl -fsSL https://mp2rss.com/install.sh | VERSION=v0.2.0 NO_VERIFY=1 sh
+#
+# POSIX sh (compatible with bash 3.2, dash, busybox ash). shellcheck clean.
+set -eu
+
+# ----- knobs (env overrides) -----
+: "${REPO:=areyoubugcoder/mp2rss-cli}"
+: "${BINARY:=mp2rss}"
+: "${INSTALL_DIR:=}"
+: "${VERSION:=}"
+: "${NO_VERIFY:=}"
+
+# ----- pretty output -----
+red()    { printf '\033[31m%s\033[0m\n' "$*" >&2; }
+green()  { printf '\033[32m%s\033[0m\n' "$*"; }
+yellow() { printf '\033[33m%s\033[0m\n' "$*"; }
+say()    { printf '%s\n' "$*"; }
+
+die() {
+  red "✗ $*"
+  exit 1
+}
+
+# ----- platform detection -----
+detect_os() {
+  os=$(uname -s 2>/dev/null || echo unknown)
+  case "$os" in
+    Darwin) echo "darwin" ;;
+    Linux)  echo "linux" ;;
+    MINGW*|MSYS*|CYGWIN*) echo "windows" ;;
+    *) die "暂不支持的操作系统：$os" ;;
+  esac
+}
+
+detect_arch() {
+  arch=$(uname -m 2>/dev/null || echo unknown)
+  case "$arch" in
+    x86_64|amd64)  echo "amd64" ;;
+    aarch64|arm64) echo "arm64" ;;
+    *) die "暂不支持的 CPU 架构：$arch" ;;
+  esac
+}
+
+# ----- dependency checks -----
+need() {
+  command -v "$1" >/dev/null 2>&1 || die "找不到必需命令：$1（请先安装）"
+}
+
+# need exactly one of (curl, wget); prefer curl
+download() {
+  url=$1
+  dst=$2
+  if command -v curl >/dev/null 2>&1; then
+    curl -fsSL -o "$dst" "$url" || die "下载失败：$url"
+  elif command -v wget >/dev/null 2>&1; then
+    wget -q -O "$dst" "$url" || die "下载失败：$url"
+  else
+    die "需要 curl 或 wget"
+  fi
+}
+
+# ----- find a writable install dir -----
+pick_install_dir() {
+  if [ -n "$INSTALL_DIR" ]; then
+    echo "$INSTALL_DIR"
+    return
+  fi
+  # prefer ~/.local/bin (no sudo)
+  if [ -d "$HOME/.local/bin" ] || mkdir -p "$HOME/.local/bin" 2>/dev/null; then
+    if [ -w "$HOME/.local/bin" ]; then
+      echo "$HOME/.local/bin"
+      return
+    fi
+  fi
+  # fallback ~/bin
+  if [ -d "$HOME/bin" ] && [ -w "$HOME/bin" ]; then
+    echo "$HOME/bin"
+    return
+  fi
+  # last resort /usr/local/bin (likely needs sudo)
+  echo "/usr/local/bin"
+}
+
+# ----- main flow -----
+goos=$(detect_os)
+goarch=$(detect_arch)
+
+if [ "$goos" = "windows" ]; then
+  die "Windows 请使用 npm 包装：npm install -g @mp2rss/cli"
+fi
+
+api="https://api.github.com/repos/$REPO/releases/latest"
+
+if [ -z "$VERSION" ]; then
+  need uname
+  say "🔎 查询 $REPO 最新版本…"
+  tmp_json=$(mktemp)
+  trap 'rm -f "$tmp_json"' EXIT INT TERM
+  download "$api" "$tmp_json"
+  # parse tag_name without jq
+  VERSION=$(sed -n 's/^[[:space:]]*"tag_name"[[:space:]]*:[[:space:]]*"\(v[^"]*\)".*/\1/p' "$tmp_json" | head -n 1)
+  rm -f "$tmp_json"
+  trap - EXIT INT TERM
+  [ -n "$VERSION" ] || die "解析 latest release 失败，请检查网络或手动指定 VERSION=v..."
+fi
+
+semver=${VERSION#v}
+asset="mp2rss-cli_${semver}_${goos}_${goarch}.tar.gz"
+url="https://github.com/$REPO/releases/download/$VERSION/$asset"
+checksums_url="https://github.com/$REPO/releases/download/$VERSION/checksums.txt"
+
+say "📦 平台 ${goos}/${goarch}，目标版本 ${VERSION}"
+
+# Download into temp dir
+tmpdir=$(mktemp -d)
+trap 'rm -rf "$tmpdir"' EXIT INT TERM
+
+say "  ↓ 下载 $asset"
+download "$url" "$tmpdir/$asset"
+
+if [ -z "$NO_VERIFY" ]; then
+  say "  🔐 校验 SHA-256"
+  download "$checksums_url" "$tmpdir/checksums.txt"
+  expected=$(awk -v a="$asset" '{
+    name=$2; sub(/^\*/, "", name);
+    if (name == a) { print $1; exit }
+  }' "$tmpdir/checksums.txt")
+  [ -n "$expected" ] || die "checksums.txt 中找不到 $asset"
+
+  if command -v sha256sum >/dev/null 2>&1; then
+    actual=$(sha256sum "$tmpdir/$asset" | awk '{print $1}')
+  elif command -v shasum >/dev/null 2>&1; then
+    actual=$(shasum -a 256 "$tmpdir/$asset" | awk '{print $1}')
+  else
+    yellow "⚠ 未找到 sha256sum / shasum，跳过校验（设 NO_VERIFY=1 也可显式跳过）"
+    actual=$expected
+  fi
+  [ "$actual" = "$expected" ] || die "checksum 不匹配：expected $expected, got $actual"
+fi
+
+say "  📂 解压"
+need tar
+tar -xzf "$tmpdir/$asset" -C "$tmpdir" "$BINARY"
+[ -f "$tmpdir/$BINARY" ] || die "归档中未找到 $BINARY 可执行文件"
+chmod 755 "$tmpdir/$BINARY"
+
+install_dir=$(pick_install_dir)
+mkdir -p "$install_dir" 2>/dev/null || true
+
+target="$install_dir/$BINARY"
+
+if [ -w "$install_dir" ]; then
+  mv "$tmpdir/$BINARY" "$target"
+else
+  yellow "  ⚠ $install_dir 不可写，使用 sudo 安装。"
+  sudo mv "$tmpdir/$BINARY" "$target" || die "sudo 安装失败，请改用 INSTALL_DIR=\$HOME/.local/bin 重试"
+fi
+
+say ""
+green "✓ 已安装到 $target"
+
+# self-check (skip if PATH doesn't include it yet — still surface success)
+if "$target" --version >/dev/null 2>&1; then
+  ver=$("$target" --version 2>&1 | head -n 1)
+  green "  $ver"
+else
+  yellow "  ⚠ 自检 \"$target --version\" 失败，请手动确认"
+fi
+
+# PATH hint
+case ":$PATH:" in
+  *":$install_dir:"*)
+    : # already in PATH
+    ;;
+  *)
+    say ""
+    yellow "提示：$install_dir 不在 \$PATH 中。请把以下行加入 ~/.bashrc 或 ~/.zshrc："
+    say "  export PATH=\"$install_dir:\$PATH\""
+    ;;
+esac
+
+say ""
+say "下一步：mp2rss auth login"