#!/usr/bin/env bash
# WP-00: Baseline benchmark — sequential card render timing
#
# Measures per-card render time for 10 cards by calling the card image
# endpoint sequentially and recording curl's time_total for each request.
#
# Usage:
#   API_BASE=http://pddev.manticorum.com:816 ./benchmarks/benchmark_renders.sh
#   API_BASE=http://localhost:8000 CARD_TYPE=pitching ./benchmarks/benchmark_renders.sh
#   API_BASE=http://pddev.manticorum.com:816 ./benchmarks/benchmark_renders.sh 101 102 103
#
# Arguments (optional): explicit player IDs to render. If omitted, the script
# queries the API for the first 10 players in the live cardset.
#
# Output: results are printed to stdout and appended to benchmarks/render_timings.txt

set -euo pipefail

API_BASE="${API_BASE:-http://localhost:8000}"
CARD_TYPE="${CARD_TYPE:-batting}"
OUTFILE="$(dirname "$0")/render_timings.txt"

echo "=== Card Render Benchmark ===" | tee -a "$OUTFILE"
echo "Date: $(date -u +%Y-%m-%dT%H:%M:%SZ)" | tee -a "$OUTFILE"
echo "API:  $API_BASE" | tee -a "$OUTFILE"
echo "Type: $CARD_TYPE" | tee -a "$OUTFILE"

# --- Resolve player IDs ---
if [ "$#" -gt 0 ]; then
    PLAYER_IDS=("$@")
    echo "Mode: explicit IDs (${#PLAYER_IDS[@]} players)" | tee -a "$OUTFILE"
else
    echo "Mode: auto-fetch first 10 players from live cardset" | tee -a "$OUTFILE"
    # Fetch player list and extract IDs; requires jq
    RAW=$(curl -sf "$API_BASE/api/v2/players?page_size=10")
    PLAYER_IDS=($(echo "$RAW" | jq -r '.players[].id // .[]?.id // .[]' 2>/dev/null | head -10))
    if [ "${#PLAYER_IDS[@]}" -eq 0 ]; then
        echo "ERROR: Could not fetch player IDs from $API_BASE/api/v2/players" | tee -a "$OUTFILE"
        exit 1
    fi
fi

echo "Players: ${PLAYER_IDS[*]}" | tee -a "$OUTFILE"
echo "" | tee -a "$OUTFILE"

# --- Run renders ---
TOTAL=0
COUNT=0

for player_id in "${PLAYER_IDS[@]}"; do
    # Bypass cached PNG files; remove ?nocache=1 after baseline is captured to test cache-hit performance.
    URL="$API_BASE/api/v2/players/$player_id/${CARD_TYPE}card?nocache=1"
    HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code} %{time_total}" "$URL" 2>&1)
    STATUS=$(echo "$HTTP_CODE" | awk '{print $1}')
    TIMING=$(echo "$HTTP_CODE" | awk '{print $2}')
    echo "  player_id=$player_id  http=$STATUS  time=${TIMING}s" | tee -a "$OUTFILE"
    if [ "$STATUS" = "200" ]; then
        TOTAL=$(echo "$TOTAL + $TIMING" | bc -l)
        COUNT=$((COUNT + 1))
    fi
done

# --- Summary ---
echo "" | tee -a "$OUTFILE"
if [ "$COUNT" -gt 0 ]; then
    AVG=$(echo "scale=3; $TOTAL / $COUNT" | bc -l)
    echo "Successful renders: $COUNT / ${#PLAYER_IDS[@]}" | tee -a "$OUTFILE"
    echo "Total time:  ${TOTAL}s" | tee -a "$OUTFILE"
    echo "Average:     ${AVG}s per render" | tee -a "$OUTFILE"
else
    echo "No successful renders — check API_BASE and player IDs" | tee -a "$OUTFILE"
fi
echo "---" | tee -a "$OUTFILE"
echo "" | tee -a "$OUTFILE"
echo "Results appended to $OUTFILE"