# Copyright (C) 2026 Rootiest
# SPDX-License-Identifier: AGPL-3.0-or-later
#
# Generates ~/.local/bin/paru on first run (and on version bump) when
# /usr/bin/paru is installed. The wrapper tees paru output to a
# timestamped log file and prunes old logs, mirroring smart_exit behavior.

# Auto-generating a wrapper in ~/.local/bin is opinionated (C2 auto-exec).
# Task #4's __fish_config_enable_logging will additionally gate this wrapper.
__fish_config_op_enabled __fish_config_op_autoexec; or return

set -l _paru_real /usr/bin/paru
set -l _paru_wrapper "$HOME/.local/bin/paru"
set -l _paru_wrapper_version 1

# Skip entirely if the real paru binary isn't present
test -x $_paru_real; or return

# Check if wrapper already exists at the expected version
if test -f $_paru_wrapper
    and grep -q "# paru-wrapper-version: $_paru_wrapper_version" $_paru_wrapper 2>/dev/null
    set --erase _paru_real _paru_wrapper _paru_wrapper_version
    return
end

mkdir -p (dirname $_paru_wrapper)

printf '%s\n' \
    '#!/usr/bin/env bash' \
    "# paru-wrapper-version: $_paru_wrapper_version" \
    '# Auto-generated by conf.d/paru-wrapper.fish — do not edit by hand.' \
    '# Tees paru output to a timestamped log file and prunes old ones.' \
    'set -o pipefail' \
    '' \
    'log_dir="${SCROLLBACK_HISTORY_DIR:-$HOME/.terminal_history}"' \
    'mkdir -p "$log_dir"' \
    'log_file="$log_dir/paru_$(date +%Y-%m-%d_%H-%M-%S).log"' \
    '' \
    '/usr/bin/paru "$@" 2>&1 | tee "$log_file"' \
    '' \
    'max_files="${SCROLLBACK_HISTORY_MAX_FILES:-100}"' \
    'mapfile -t logs < <(ls -1t "$log_dir"/paru_*.log 2>/dev/null)' \
    'excess=$(( ${#logs[@]} - max_files ))' \
    'for (( i = ${#logs[@]} - 1; i >= ${#logs[@]} - excess && i >= 0; i-- )); do' \
    '    rm -f "${logs[$i]}"' \
    'done' \
    > $_paru_wrapper

chmod +x $_paru_wrapper

set --erase _paru_real _paru_wrapper _paru_wrapper_version