#!/usr/bin/env bash
# Install the latest shw release binary into ~/.local/bin (or $SHW_INSTALL_DIR).
#   curl -fsSL https://raw.githubusercontent.com/TillBeemelmanns/shw/main/install.sh | bash
set -euo pipefail

trap 'echo "shw installation FAILED" >&2' ERR

REPO="TillBeemelmanns/shw"
DEST="${SHW_INSTALL_DIR:-$HOME/.local/bin}"

OS=$(uname -s)
ARCH=$(uname -m)

case "$OS" in
    Linux)  OS_TARGET="unknown-linux-musl" ;;
    Darwin) OS_TARGET="apple-darwin" ;;
    *)      echo "Unsupported OS: $OS" >&2; exit 1 ;;
esac

case "$ARCH" in
    x86_64 | amd64)  ARCH_TARGET="x86_64" ;;
    aarch64 | arm64) ARCH_TARGET="aarch64" ;;
    *)               echo "Unsupported architecture: $ARCH" >&2; exit 1 ;;
esac

# Tags and asset names keep the 'v' prefix (e.g. v0.1.0), like bat.
TAG="${SHW_VERSION:-$(curl -fsSI "https://github.com/${REPO}/releases/latest" \
    | grep -i '^location:' | sed 's|.*/tag/||' | tr -d '\r\n')}"

TARGET="shw-${TAG}-${ARCH_TARGET}-${OS_TARGET}"
URL="https://github.com/${REPO}/releases/download/${TAG}/${TARGET}.tar.gz"

TMPDIR=$(mktemp -d)
trap 'rm -rf "$TMPDIR"' EXIT

echo "Downloading shw ${TAG} from $URL ..."
curl -fsSL "$URL" -o "$TMPDIR/shw.tar.gz"
tar -xzf "$TMPDIR/shw.tar.gz" -C "$TMPDIR"

mkdir -p "$DEST"
install -m 755 "$TMPDIR/$TARGET/shw" "$DEST/shw"

# Shell completions (best effort)
if [ -d "$TMPDIR/$TARGET/completions" ]; then
    mkdir -p "$HOME/.local/share/zsh/site-functions" "$HOME/.local/share/bash-completion/completions" "$HOME/.config/fish/completions" 2>/dev/null || true
    cp "$TMPDIR/$TARGET/completions/_shw" "$HOME/.local/share/zsh/site-functions/_shw" 2>/dev/null || true
    cp "$TMPDIR/$TARGET/completions/shw.bash" "$HOME/.local/share/bash-completion/completions/shw" 2>/dev/null || true
    cp "$TMPDIR/$TARGET/completions/shw.fish" "$HOME/.config/fish/completions/shw.fish" 2>/dev/null || true
fi

echo "shw successfully installed to $DEST/shw"