#!/bin/bash

# Run all pi calculation programs and measure ONLY execution time
# No overhead from measurement tools - gives accurate timing

# Don't exit on error - continue with next program
# set -e

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
cd "$SCRIPT_DIR"

# Check if argument provided
if [ $# -eq 0 ]; then
    echo "Usage: $0 <decimaler>"
    echo "Example: $0 100"
    exit 1
fi

DECIMALS=$1

# Colors for output
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
BLUE='\033[0;34m'
NC='\033[0m' # No Color

# Function to verify result against facit
verify() {
    local result="$1"
    local decimals="$2"
    local expected=$(head -c $((decimals + 2)) facit.txt)

    if [ "$result" = "$expected" ]; then
        return 0
    else
        return 1
    fi
}

echo "=== Pi-beräkning med $DECIMALS decimaler (SNABBTEST - ingen overhead) ==="
echo ""

# Array to store results
declare -a results

# Run each program 4 times, discard first run (warmup), take average of last 3
run_program() {
    local name="$1"
    shift

    printf "%-12s " "$name"

    local total_time=0
    local success_count=0
    local result

    # Run 4 times, discard first run (warmup)
    for i in 1 2 3 4; do
        local start=$(date +%s%N)
        
        # Run program directly (no measurement overhead)
        result=$("$@" 2>/dev/null)
        local exit_code=$?
        
        local end=$(date +%s%N)
        local elapsed=$(( (end - start) / 1000000 ))
        
        if [ $exit_code -eq 0 ]; then
            # Get result for verification
            if [ "$i" -gt 1 ]; then
                # Only count runs 2-4 for averages
                total_time=$((total_time + elapsed))
                
                if verify "$result" "$DECIMALS"; then
                    ((success_count++))
                fi
            fi
        else
            echo -e "${RED}ERROR${NC}"
            results+=("999999 $name ERROR")
            return
        fi
    done

    # Calculate average
    local avg_time=$((total_time / 3))

    if [ $success_count -eq 3 ]; then
        echo -e "${GREEN}SUCCESS${NC} $avg_time ms"
        results+=("$avg_time $name SUCCESS")
    else
        echo -e "${RED}FAILED${NC} $avg_time ms"
        results+=("$avg_time $name FAILED")
    fi
}

# Run all programs (no timeouts)
run_program Assembly assembly/bin/print_hej "$DECIMALS"
run_program Bash bash/bin/print_hej "$DECIMALS"
run_program Brainfuck brainfuck/bin/print_hej "$DECIMALS"
run_program C c/bin/print_hej "$DECIMALS"
run_program C++ cpp/bin/print_hej "$DECIMALS"
run_program Crystal crystal/bin/print_hej "$DECIMALS"
run_program CSharp csharp/bin/print_hej "$DECIMALS"
run_program D d/bin/print_hej "$DECIMALS"
run_program Dart dart/bin/print_hej "$DECIMALS"
run_program Elixir elixir/bin/print_hej "$DECIMALS"
run_program Erlang erlang/bin/print_hej "$DECIMALS"
run_program Fortran fortran/bin/print_hej "$DECIMALS"
run_program Go go/bin/print_hej "$DECIMALS"
run_program Haskell haskell/bin/print_hej "$DECIMALS"
run_program Java java/bin/print_hej "$DECIMALS"
run_program JavaScript javascript/bin/print_hej "$DECIMALS"
run_program Julia julia/bin/print_hej "$DECIMALS"
run_program Kotlin kotlin/bin/print_hej "$DECIMALS"
run_program Lua lua/bin/print_hej "$DECIMALS"
run_program Nim nim/bin/print_hej "$DECIMALS"
run_program Objective-C objective-c/bin/print_hej "$DECIMALS"
run_program Odin odin/bin/print_hej "$DECIMALS"
run_program Perl perl/bin/print_hej "$DECIMALS"
run_program PHP php/bin/print_hej "$DECIMALS"
run_program Python python/bin/print_hej "$DECIMALS"
run_program R r/bin/print_hej "$DECIMALS"
run_program Ruby ruby/bin/print_hej "$DECIMALS"
run_program Rust rust/bin/print_hej "$DECIMALS"
run_program Scala scala/bin/print_hej "$DECIMALS"
run_program Swift swift/bin/print_hej "$DECIMALS"
run_program TypeScript typescript/bin/print_hej "$DECIMALS"
run_program Zig zig/bin/print_hej "$DECIMALS"

# Sort results by time (numerically)
echo ""
echo "=== RESULTAT (sorterat efter tid) ==="
printf "%-12s %s\n" "Språk" "Tid (ms)"
echo "-----------------------------------"

# Sort numerically by time
printf '%s\n' "${results[@]}" | sort -n -k1 | while read result; do
    time=$(echo "$result" | awk '{print $1}')
    name=$(echo "$result" | awk '{print $2}')
    status=$(echo "$result" | awk '{print $3}')
    
    if [ "$status" = "SUCCESS" ]; then
        printf "%-12s %s\n" "$name" "$time"
    else
        printf "%-12s %s (FAILED)\n" "$name" "$time"
    fi
done

echo ""
echo "=== Klart ==="