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

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
DOTFILES_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"
WORK_DIR="/tmp/m-archy-build"
OUT_DIR="${1:-/tmp/m-archy-out}"
PROFILE="$WORK_DIR/profile"
RELENG="/usr/share/archiso/configs/releng"

if ! command -v mkarchiso &>/dev/null; then
    echo "Installing archiso..."
    sudo pacman -S --noconfirm archiso
fi

[[ -d "$RELENG" ]] || { echo "ERROR: $RELENG not found — is archiso installed?"; exit 1; }

rm -rf "$WORK_DIR"
mkdir -p "$WORK_DIR" "$OUT_DIR"

echo "Copying releng base profile..."
cp -r "$RELENG" "$PROFILE"

echo "Applying M-Archy overlay..."
cp -r "$SCRIPT_DIR/overlay/airootfs/." "$PROFILE/airootfs/"

echo "Replacing profiledef..."
cp "$SCRIPT_DIR/overlay/profiledef.sh" "$PROFILE/profiledef.sh"

echo "Adding extra packages..."
while IFS= read -r pkg || [[ -n "$pkg" ]]; do
    [[ -z "$pkg" || "$pkg" == \#* ]] && continue
    grep -qxF "$pkg" "$PROFILE/packages.x86_64" || echo "$pkg" >> "$PROFILE/packages.x86_64"
done < "$SCRIPT_DIR/overlay/packages.extra"

echo "Embedding installer scripts..."
mkdir -p "$PROFILE/airootfs/root/installer"
cp "$DOTFILES_DIR/setup/archbaseos-guided-install.sh" "$PROFILE/airootfs/root/installer/"
cp "$DOTFILES_DIR/setup/arch-autoinstall.sh"          "$PROFILE/airootfs/root/installer/"

chmod 755 \
    "$PROFILE/airootfs/root/launch.sh" \
    "$PROFILE/airootfs/usr/local/bin/install-arch" \
    "$PROFILE/airootfs/root/installer/"*.sh

echo "Building ISO (this may take a while)..."
sudo mkarchiso -v -w "$WORK_DIR/mkarchiso" -o "$OUT_DIR" "$PROFILE"

echo
echo "Done."
ls -lh "$OUT_DIR/"*.iso 2>/dev/null || true