#!/bin/bash
# shellcheck disable=SC2032  # Variables are used within this script
# bashrs-disable: DET002 SEC010  # Timestamps and paths are intentional for benchmarking
set -e

OUTPUT_DIR=".pmat-metrics/build-benchmarks"
# shellcheck disable=SC2174
mkdir -p "$OUTPUT_DIR"
TIMESTAMP="$(date +%Y%m%d_%H%M%S)"
BASELINE_FILE="$OUTPUT_DIR/baseline_$TIMESTAMP.txt"

echo "=== Build Performance Benchmark ===" | tee "$BASELINE_FILE"
echo "Date: $(date)" | tee -a "$BASELINE_FILE"
echo "Git commit: $(git rev-parse HEAD)" | tee -a "$BASELINE_FILE"
echo "" | tee -a "$BASELINE_FILE"

# 1. Clean build
echo "1. Clean build (dev)..." | tee -a "$BASELINE_FILE"
cargo clean
{ time cargo build 2>&1; } 2>&1 | tee -a "$BASELINE_FILE"

# 2. Incremental build (touch one file)
echo "" | tee -a "$BASELINE_FILE"
echo "2. Incremental build (one file)..." | tee -a "$BASELINE_FILE"
touch server/src/cli/commands.rs
{ time cargo build 2>&1; } 2>&1 | tee -a "$BASELINE_FILE"

# 3. Dependency count
echo "" | tee -a "$BASELINE_FILE"
echo "3. Dependency analysis..." | tee -a "$BASELINE_FILE"
DEP_COUNT="$(cargo tree 2>/dev/null | wc -l)"
echo "Total dependencies: $DEP_COUNT" | tee -a "$BASELINE_FILE"

# 4. Duplicate versions
echo "" | tee -a "$BASELINE_FILE"
echo "4. Duplicate dependency versions:" | tee -a "$BASELINE_FILE"
cargo tree -d 2>/dev/null | tee -a "$BASELINE_FILE"

echo "" | tee -a "$BASELINE_FILE"
echo "=== Baseline Results Saved ===" | tee -a "$BASELINE_FILE"
echo "File: $BASELINE_FILE" | tee -a "$BASELINE_FILE"