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

REPO="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
BIN_DIR="${HOME}/.local/bin"
PATH_MARKER="# pouch: ~/.local/bin"
LEGACY_PATH_MARKER="# skiff: ~/.local/bin"

mkdir -p "$BIN_DIR"
ln -sf "$REPO/bin/pouch" "$BIN_DIR/pouch"
echo "已安装 pouch -> $BIN_DIR/pouch"
if [[ ! -e "$BIN_DIR/skiff" || -L "$BIN_DIR/skiff" ]]; then
  ln -sf "pouch" "$BIN_DIR/skiff"
  echo "已保留 skiff -> pouch（旧命令名）"
fi

PYTHONPATH="$REPO${PYTHONPATH:+:$PYTHONPATH}" python3 -m pouch bootstrap

path_already_configured() {
  local file="$1"
  [[ -f "$file" ]] && { grep -qF "$PATH_MARKER" "$file" || grep -qF "$LEGACY_PATH_MARKER" "$file"; }
}

configure_bash() {
  local rc="${HOME}/.bashrc"
  if path_already_configured "$rc"; then
    echo "bash: $rc 已配置 PATH，跳过"
    return
  fi
  {
    echo ""
    echo "$PATH_MARKER"
    echo 'export PATH="$HOME/.local/bin:$PATH"'
  } >>"$rc"
  echo "bash: 已写入 $rc"
}

configure_zsh() {
  local rc="${HOME}/.zshrc"
  if path_already_configured "$rc"; then
    echo "zsh: $rc 已配置 PATH，跳过"
    return
  fi
  {
    echo ""
    echo "$PATH_MARKER"
    echo 'export PATH="$HOME/.local/bin:$PATH"'
  } >>"$rc"
  echo "zsh: 已写入 $rc"
}

configure_fish() {
  local fish_dir="${HOME}/.config/fish"
  local rc="${fish_dir}/config.fish"
  mkdir -p "$fish_dir"
  if path_already_configured "$rc"; then
    echo "fish: $rc 已配置 PATH，跳过"
    return
  fi
  {
    echo ""
    echo "$PATH_MARKER"
    echo 'fish_add_path -gm --prepend ~/.local/bin'
  } >>"$rc"
  echo "fish: 已写入 $rc"
}

configure_bash
configure_zsh
configure_fish

echo ""
echo "请重新打开终端，或执行以下命令使 PATH 生效："
echo "  bash: source ~/.bashrc"
echo "  zsh:  source ~/.zshrc"
echo "  fish: source ~/.config/fish/config.fish"