#!/bin/sh
# Scrolls the transcript and prints the app's own render report -- the
# standard measurement for "is the transcript smooth", so a perf session
# starts from a number instead of re-inventing this loop in /tmp.
#
#   ./transcript-bench.sh            restart the app, open the session the
#                                    server lists first, scroll, report
#   ./transcript-bench.sh -s TITLE   open that session instead
#   ./transcript-bench.sh -k         keep whatever screen is open now
#   ./transcript-bench.sh -n 4       swipe cycles (default 6; one cycle is
#                                    two swipes back and two forward)
#
# What it prints is the report the in-app copy button produces, plus any
# duplicate-key warnings the flatten logged. Absolute frame times from the
# emulator are worthless (it renders in software); what transfers is the
# report's own accounting -- what was on screen, and where the draw phase
# went. Compare two runs of this with the same gestures, not one run
# against a phone.
#
# The swipes are still coordinates, because a gesture across a scrolling
# area is a distance rather than a control. Every *control* is pressed by
# name -- see bench-lib.sh.
set -eu
cd "$(dirname "$0")"
. ./android-env.sh >/dev/null 2>&1
. ./bench-lib.sh

keep=""
cycles=6
session=""
while getopts kn:s: flag; do
    case $flag in
    k) keep=1 ;;
    n) cycles=$OPTARG ;;
    s) session=$OPTARG ;;
    *) exit 2 ;;
    esac
done

if [ -z "$keep" ]; then
    [ -n "$session" ] || session=$(first_session_title)
    [ -n "$session" ] || { echo "transcript-bench: no sessions to open" >&2; exit 1; }
    open_session "$session"
fi

# The first copy resets the report's "work since last copied" window, so the
# numbers cover exactly the swipes between the two.
copy_render_report /tmp/bench-reset.txt
adb logcat -c

DO=""
i=0
while [ "$i" -lt "$cycles" ]; do
    DO="$DO --do 'swipe 540 700 540 1600 200' --do 'wait 500'"
    DO="$DO --do 'swipe 540 700 540 1600 200' --do 'wait 500'"
    DO="$DO --do 'swipe 540 1600 540 700 200' --do 'wait 500'"
    DO="$DO --do 'swipe 540 1600 540 700 200' --do 'wait 500'"
    i=$((i + 1))
done
eval ui-trace record -d $((cycles * 4400 + 2000)) $DO -o /tmp/bench-scroll.txt >/dev/null 2>&1

copy_render_report /tmp/bench-report.txt
sleep 1
adb logcat -d -s ai-app:I | sed -n '/ai-app render report/,$p' | sed 's/^.*ai-app  : //'
adb logcat -d 2>/dev/null | grep -i "duplicate unit key" | head -3 || true