#!/usr/bin/env bash
# Install one or more built dispatch packages with yay -U.
#
# Default: installs the freshest dispatch + dispatch-systemd from packaging/.
# Pass package names (without version) to install a custom set.
#
# Usage:
#   bin/install-pkg                              # dispatch + dispatch-systemd + code-search
#   bin/install-pkg dispatch dispatch-s6         # dispatch + dispatch-s6
#   bin/install-pkg dispatch dispatch-electron   # dispatch + electron wrapper
#   bin/install-pkg --all                        # every freshest pkg found

set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
PACKAGING_DIR="$PROJECT_DIR/packaging"
ELECTRON_DIR="$PROJECT_DIR/packaging/electron"

# Find the most recent .pkg.tar.zst matching a package name in a given dir.
find_pkg() {
	local name="$1" dir="$2"
	ls -t "$dir"/"$name"-[0-9]*-x86_64.pkg.tar.zst 2>/dev/null | head -1
}

# Resolve a package name to its freshest tarball, searching both dirs.
resolve_pkg() {
	local name="$1" path
	path=$(find_pkg "$name" "$PACKAGING_DIR")
	[ -n "$path" ] || path=$(find_pkg "$name" "$ELECTRON_DIR")
	echo "$path"
}

declare -a names
declare -a paths

if [ $# -eq 0 ]; then
	names=(dispatch dispatch-systemd)
	# code-search ships a self-contained `cs` binary pinned to _cs_commit in the
	# PKGBUILD; it rarely changes. Skip reinstalling it if it's already present —
	# run `bin/install-pkg code-search` to force a reinstall (e.g. after a bump).
	if pacman -Qq code-search &>/dev/null; then
		echo "code-search already installed — skipping (run 'bin/install-pkg code-search' to force)"
	else
		names+=(code-search)
	fi
elif [ "${1:-}" = "--all" ]; then
	names=(dispatch dispatch-systemd dispatch-s6 dispatch-electron code-search)
else
	names=("$@")
fi

for name in "${names[@]}"; do
	path=$(resolve_pkg "$name")
	if [ -z "$path" ]; then
		# --all is lenient: skip missing packages
		if [ "${1:-}" = "--all" ]; then
			echo "warn: no built package found for '$name', skipping" >&2
			continue
		fi
		echo "error: no built package found for '$name'" >&2
		echo "       run bin/build-pkg (or bin/build-pkg-electron) first." >&2
		exit 1
	fi
	paths+=("$path")
done

if [ ${#paths[@]} -eq 0 ]; then
	echo "error: nothing to install." >&2
	exit 1
fi

echo "Installing:"
printf '  %s\n' "${paths[@]}"
echo ""
yay -U "${paths[@]}"