#!/bin/bash
set -euo pipefail

SETUP_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PACKAGES_FILE="$SETUP_DIR/packages.txt"

# shellcheck source=../lib/common.sh
source "$SETUP_DIR/../lib/common.sh"

# ---------------------------------------------------------------------------
# Create the local shell selection from the tracked example exactly once.
# env.lua is ignored by Git so each machine can keep its own choice.
# ---------------------------------------------------------------------------
ensure_shell_config() {
    local config_dir example_file config_file

    config_dir="$(repo_root)/hypr/.config/hypr"
    example_file="$config_dir/env.example.lua"
    config_file="$config_dir/env.lua"

    if [[ -e "$config_file" || -L "$config_file" ]]; then
        echo "==> Behalte lokale Shell-Auswahl: $config_file"
        return
    fi

    echo "==> Erstelle lokale Shell-Auswahl aus env.example.lua ..."
    cp "$example_file" "$config_file"
}

# ---------------------------------------------------------------------------
# Keep Caelestia on upstream Quickshell.
#
# noctalia-qs can satisfy pacman's virtual quickshell-git dependency, but its
# parser is not compatible with Caelestia. The explicit aur/quickshell-git
# target bypasses that provider, then setup verifies that /usr/bin/qs really
# belongs to quickshell-git.
# ---------------------------------------------------------------------------
warn_about_quickshell_provider() {
    if pacman -Q noctalia-qs >/dev/null 2>&1; then
        log "noctalia-qs ist installiert; die AUR-Transaktion ersetzt es durch quickshell-git."
    fi
}

verify_quickshell_runtime() {
    local owner

    if pacman -Q noctalia-qs >/dev/null 2>&1; then
        echo "Fehler: noctalia-qs ist weiterhin installiert; Caelestia benoetigt AUR quickshell-git." >&2
        return 1
    fi

    if ! pacman -Q quickshell-git >/dev/null 2>&1; then
        echo "Fehler: AUR-Paket quickshell-git wurde nicht installiert." >&2
        return 1
    fi

    owner="$(pacman -Qoq /usr/bin/qs 2>/dev/null || true)"
    if [[ "$owner" != "quickshell-git" ]]; then
        echo "Fehler: /usr/bin/qs gehoert zu '$owner' statt zu quickshell-git." >&2
        return 1
    fi

    log "Quickshell-Runtime geprueft: quickshell-git"
}

# ---------------------------------------------------------------------------
# Post-install: run Hyprland environment & desktop integration scripts.
# ---------------------------------------------------------------------------
run_hypr_scripts() {
    local scripts_dir
    scripts_dir="$(repo_root)/hypr/.config/hypr/scripts"

    echo "==> Fuehre portal-host-override.sh aus ..."
    bash "$scripts_dir/portal-host-override.sh"

    echo "==> Fuehre fix_dolphin_file_associations.sh aus ..."
    bash "$scripts_dir/fix_dolphin_file_associations.sh"
}

# ---------------------------------------------------------------------------
# Main
# ---------------------------------------------------------------------------
main() {
    local -a pacman_pkgs=() aur_pkgs=() npm_pkgs=()

    echo "==> Lese Paketliste: $PACKAGES_FILE"
    read_packages "$PACKAGES_FILE" pacman_pkgs aur_pkgs npm_pkgs

    warn_about_quickshell_provider
    install_all_pkgs pacman_pkgs aur_pkgs npm_pkgs
    verify_quickshell_runtime

    ensure_shell_config
    run_hypr_scripts

    echo "Fertig. Hyprland und das Compositor-Okosystem sind eingerichtet."
}

main