#!/usr/bin/env fish
# FKRPG benchmark — Spark + worldgen test stubs (Fish)
# Requires running local server at ~/.auto-mcs/Servers/FKRPG
# Usage:
#   fish tools/benchmark.fish --baseline   # capture baseline.json
#   fish tools/benchmark.fish --compare    # compare current vs baseline
#   fish tools/worldgen-test.fish          # separate worldgen perf test

set -l repo (dirname (dirname (realpath (status filename))))
set -l baseline "$repo/baseline.json"
set -l local_dir "$HOME/.auto-mcs/Servers/FKRPG"

argparse baseline compare help -- $argv
or begin
    echo "usage: fish tools/benchmark.fish [--baseline|--compare|--help]"
    exit 2
end

if set -q _flag_help
    echo "FKRPG benchmark (Spark)"
    echo "  Requires Spark mod on server (add if missing) and a running local test server."
    echo "  Manual steps for now — this script documents the procedure and creates baseline.json skeleton."
    exit 0
end

if set -q _flag_baseline
    echo "Creating baseline skeleton at $baseline ..."
    # If actual spark data exists via RCON/log, you would populate here
    # For now create placeholder that passes audit shape validation
    set -l template '{
  "generated_at": "",
  "pack_version": "",
  "environment": "local",
  "server": "~/.auto-mcs/Servers/FKRPG",
  "tps": 20.0,
  "mspt": 25.4,
  "memory_gb": 7.1,
  "gc_pause_ms": 3.2,
  "chunk_generation_per_second": 0,
  "cpu_percent": 0,
  "notes": "Replace with real Spark data: /spark profiler --timeout 300, then paste TPS/MSPT/CPU/RAM/GC"
}'
    # fill generated_at + pack_version
    set -l now (date -u +%Y-%m-%dT%H:%M:%SZ)
    set -l pack_ver (grep -E '^\s*version\s*=' "$repo/server_pack/pack.toml" | head -n1 | sed -E 's/.*\"([^\"]+)\".*/\1/')
    echo $template | python3 -c "
import json, sys
d=json.load(sys.stdin)
import datetime
d['generated_at']='$now'
d['pack_version']='$pack_ver'
print(json.dumps(d, indent=2))
" > $baseline
    echo "Wrote $baseline — edit with real Spark numbers before using --compare"
    cat $baseline
    exit 0
end

if set -q _flag_compare
    if not test -f "$baseline"
        echo "No baseline at $baseline — run --baseline first" >&2
        exit 1
    end
    echo "Baseline:"
    cat $baseline
    echo
    echo "To compare: run Spark again, then diff TPS/MSPT manually or extend this script to parse spark output."
    echo "Never claim optimization without evidence — MSPT must drop, TPS stable 20."
    exit 0
end

echo "No flag given — try --help"
exit 2