#!/bin/sh
# install.sh — symlink session-tools/bin/* into ~/bin (idempotent).
#
# Run this on every host that should have remote-run / tssh available.

set -eu

repo_dir=$(cd "$(dirname "$0")" && pwd)

# Pick the first install target that's already on $PATH so the symlinks are
# immediately usable. Override with TARGET=<dir> ./install.sh.
pick_target() {
    if [ -n "${TARGET:-}" ]; then
        printf %s "$TARGET"
        return
    fi
    for candidate in "$HOME/bin" "$HOME/.local/bin"; do
        case ":$PATH:" in
            *":$candidate:"*) printf %s "$candidate"; return ;;
        esac
    done
    # Nothing on PATH — fall back to ~/bin and warn later.
    printf %s "$HOME/bin"
}

target=$(pick_target)
mkdir -p "$target"

for src in "$repo_dir"/bin/*; do
    name=$(basename "$src")
    link="$target/$name"
    if [ -L "$link" ] && [ "$(readlink "$link")" = "$src" ]; then
        echo "ok:    $link -> $src"
        continue
    fi
    if [ -e "$link" ] && [ ! -L "$link" ]; then
        echo "skip:  $link exists and is not a symlink — leaving alone" >&2
        continue
    fi
    ln -sfn "$src" "$link"
    echo "link:  $link -> $src"
done

case ":$PATH:" in
    *":$target:"*) ;;
    *) echo "note:  add $target to PATH if it isn't already" ;;
esac