#!/usr/bin/env bash
# P70：启动帧率与渲染绘制概要基准（真实可复跑，不宣称未测性能）。
#
# 两档：
#   * Kernel 吞吐：Headless `--performance-baseline`（6000 measure tick ×3，已有入口），落 kernel-baseline.txt。
#   * Desktop 渲染帧：xvfb 真实帧循环 N 秒（默认 60），逐帧打印墙钟帧间隔与线程分配增量
#     （LV_FRAME_LOG=1，仅新增日志、不改渲染逻辑），落 desktop-log.txt。
# 之后由 scripts/analyze-p70.py 汇总裁决到 docs/evidence/p70-analysis.txt。
#
# 用法：bash scripts/bench-p70.sh [out-dir]   （out-dir 默认 /tmp/opencode/lv-p70）
# 环境：P70_SECONDS（默认 60）基准秒数；P70_FORCE=1 允许 fps=0 时仍返回 0。
set -u

REPO="$(cd "$(dirname "$0")/.." && pwd)"
OUT="${1:-/tmp/opencode/lv-p70}"
BENCH_SECONDS="${P70_SECONDS:-60}"
XVFB_ARGS="-screen 0 1280x720x24"

KERNEL_DLL="$REPO/src/LivingVillage.Headless/bin/Release/net8.0/LivingVillage.Headless.dll"
DESKTOP_DLL="$REPO/src/LivingVillage.Desktop/bin/Release/net8.0/LivingVillage.Desktop.dll"
KERNEL_LOG="$OUT/kernel-baseline.txt"
DESKTOP_LOG="$OUT/desktop-log.txt"

mkdir -p "$OUT"
echo "[p70] repo=$REPO out=$OUT bench_seconds=$BENCH_SECONDS"
echo "[p70] started_at=$(date -u +%Y-%m-%dT%H:%M:%SZ)"
echo "[p70] kernel_dll=$KERNEL_DLL"
echo "[p70] desktop_dll=$DESKTOP_DLL"

for dll in "$KERNEL_DLL" "$DESKTOP_DLL"; do
    if [ ! -f "$dll" ]; then
        echo "[p70] FATAL missing $dll（先 dotnet build LivingVillage.sln -c Release）" >&2
        exit 90
    fi
done

if command -v dotnet-counters >/dev/null 2>&1; then
    COUNTERS=available
else
    COUNTERS=missing
fi
if command -v xvfb-run >/dev/null 2>&1; then
    XVFB=available
else
    XVFB=missing
fi
{
    echo "dotnet-counters=$COUNTERS"
    echo "xvfb-run=$XVFB"
    echo "bench_seconds=$BENCH_SECONDS"
    echo "desktop_dll=$DESKTOP_DLL"
    echo "kernel_dll=$KERNEL_DLL"
} > "$OUT/env.txt"
echo "[p70] dotnet-counters=$COUNTERS"
if [ "$XVFB" = "missing" ]; then
    echo "[p70] FATAL xvfb-run 不可用（Desktop 需虚拟显示）" >&2
    exit 91
fi
echo "[p70] xvfb-run=$XVFB（不阻塞：逐帧分配用 GC.GetAllocatedBytesForCurrentThread 实测）"

echo "[p70] kernel baseline: dotnet $KERNEL_DLL --performance-baseline"
dotnet "$KERNEL_DLL" --performance-baseline > "$KERNEL_LOG" 2>&1
KCODE=$?
echo "[p70] kernel exit=$KCODE"

echo "[p70] desktop frame loop: ${BENCH_SECONDS}s @ 1280x720 under xvfb"
timeout $((BENCH_SECONDS + 180)) xvfb-run -a -s "$XVFB_ARGS" env \
    LV_AUTOPLAY_SAMPLE=1 \
    LV_PERF_SOAK_SECONDS="$BENCH_SECONDS" \
    LV_FRAME_LOG=1 \
    LV_UNLOCK_FPS=1 \
    LV_LEGACY_MAP=1 \
    LV_RECORD_DIR="$OUT" \
    dotnet "$DESKTOP_DLL" > "$DESKTOP_LOG" 2>&1
DCODE=$?
echo "[p70] desktop exit=$DCODE frames=$(grep -c '^p70-frame ' "$DESKTOP_LOG" || true)"
echo "[p70] ended_at=$(date -u +%Y-%m-%dT%H:%M:%SZ)"

python3 "$REPO/scripts/analyze-p70.py" "$OUT" "$REPO/docs/evidence/p70-analysis.txt"
ACODE=$?
echo "[p70] analyze exit=$ACODE -> $REPO/docs/evidence/p70-analysis.txt"
exit "$ACODE"