#!/usr/bin/env bash
# =============================================================================
#  run_once_10-add-chaotic-aur.sh.tmpl  (arch-only)
#  Add Chaotic-AUR repo + keyring to pacman, then install paru from there.
#  Reference: https://aur.chaotic.cx/docs
#
#  Steps from chaotic docs:
#    1. Get and sign the key
#    2. Install chaotic-keyring + chaotic-mirrorlist
#    3. Append repo to /etc/pacman.conf
# =============================================================================
set -euo pipefail

log() { printf '\033[1;34m[chaotic]\033[0m %s\n' "$*"; }
die() { printf '\033[1;31m[chaotic ERROR]\033[0m %s\n' "$*" >&2; exit 1; }

# This script runs as the invoking user; sudo handles elevation for pacman
# and pacman-key operations below.

if command -v paru >/dev/null 2>&1; then
    log "paru already installed — skipping chaotic setup"
    exit 0
fi

# Chaotic's official bootstrap. Run as root because pacman-key needs it.
log "fetching chaotic key (3056513887B78AEB)"
pacman-key --recv-key 3056513887B78AEB
pacman-key --lsign-key 3056513887B78AEB

log "installing chaotic-keyring and chaotic-mirrorlist"
pacman -U --noconfirm \
    'https://cdn-mirror.chaotic.cx/chaotic-aur/chaotic-keyring.pkg.tar.zst' \
    'https://cdn-mirror.chaotic.cx/chaotic-aur/chaotic-mirrorlist.pkg.tar.zst'

# Append chaotic repo to pacman.conf if not already present
if ! grep -q "^\[chaotic-aur\]" /etc/pacman.conf; then
    log "appending chaotic-aur to /etc/pacman.conf"
    cat >> /etc/pacman.conf <<'PACMAN_EOF'

[chaotic-aur]
Include = /etc/pacman.d/chaotic-mirrorlist
PACMAN_EOF
else
    log "chaotic-aur already in /etc/pacman.conf"
fi

log "full system sync with chaotic enabled"
pacman -Syu --noconfirm

log "installing paru from chaotic-aur"
pacman -S --needed --noconfirm paru

log "chaotic-aur + paru ready"
paru --version