#!/usr/bin/env bash
# Switch tuned profile to accelerator-performance
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/../../lib/common.sh"
source "$SCRIPT_DIR/../../lib/detect.sh"

RECOMMENDED="accelerator-performance"

log_header "Tuned Profile Optimization"

if [[ $EUID -ne 0 ]]; then
    log_error "This script requires root. Re-run with: sudo make optimize-tuned"
    exit 1
fi

if ! is_cmd tuned-adm; then
    log_error "tuned is not installed. Install with: sudo dnf install tuned"
    exit 1
fi

current="$(detect_tuned_profile)"
log_info "Current profile: $current"

if [[ "$current" == "$RECOMMENDED" ]]; then
    log_success "Already using $RECOMMENDED"
    exit 0
fi

# Check availability
if ! tuned-adm list 2>/dev/null | grep -q "$RECOMMENDED"; then
    log_error "$RECOMMENDED profile not available"
    log_info "Available profiles:"
    tuned-adm list 2>/dev/null | grep "^-" | sed 's/^/  /'
    exit 1
fi

echo ""
log_info "Recommended: $RECOMMENDED"
log_info "Description: Throughput performance with disabled higher latency STOP states"
log_info "Benefit: 5-8% improvement in prompt processing (pp) benchmarks"
log_info "No reboot required."
echo ""

if ! confirm "Switch to $RECOMMENDED?"; then
    log_info "Skipped"
    exit 0
fi

# Save current for rollback
echo "$current" > "$(data_dir backups)/tuned-previous-profile.txt"

tuned-adm profile "$RECOMMENDED"

new_profile="$(detect_tuned_profile)"
if [[ "$new_profile" == "$RECOMMENDED" ]]; then
    log_success "Profile switched to: $new_profile"
else
    log_error "Profile switch may have failed. Current: $new_profile"
fi