#!/bin/bash

# Run all pi calculation programs and measure performance
# Run each program 3 times and take the average

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'
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 (4 körningar, genomsnitt av 3 efter warmup) ==="
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)
        
        if result=$("$@" 2>/dev/null); then
            local end=$(date +%s%N)
            local elapsed=$(( (end - start) / 1000000 ))
            
            # Skip first run (warmup)
            if [ $i -gt 1 ]; then
                total_time=$((total_time + elapsed))
                
                if verify "$result" "$DECIMALS"; then
                    ((success_count++))
                fi
            fi
        else
            # If any run fails, mark as error
            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} $avg_time ms (avg)"
        results+=("$avg_time $name SUCCESS")
    else
        echo -e "${RED}FAILED${NC} $avg_time ms (avg)"
        results+=("$avg_time $name FAILED")
    fi
}

# Run all programs (no timeouts)
run_program Bash 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 "$DECIMALS"
run_program Objective-C objective-c/bin/print_hej "$DECIMALS"
run_program Scala scala/bin/print_hej "$DECIMALS"
run_program TypeScript typescript/bin/print_hej "$DECIMALS"
run_program Lua lua/bin/print_hej "$DECIMALS"
run_program Nim nim/bin/print_hej "$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 "$DECIMALS"
run_program Swift swift/bin/print_hej "$DECIMALS"
run_program Zig zig/bin/print_hej "$DECIMALS"
run_program Assembly assembly/bin/print_hej "$DECIMALS"
run_program Wolfram wolfram/bin/print_hej "$DECIMALS"
run_program Vimscript vimscript/bin/print_hej "$DECIMALS"

echo ""
echo "=== Sammanfattning (sorterad efter prestanda) ==="
echo ""

# Sort and print results
IFS=$'\n' sorted=($(printf '%s\n' "${results[@]}" | sort -n))
unset IFS

for entry in "${sorted[@]}"; do
    time_ms=$(echo "$entry" | awk '{print $1}')
    name=$(echo "$entry" | awk '{print $2}')
    status=$(echo "$entry" | awk '{print $3}')

    printf "%-12s " "$name"

    if [ "$status" = "SUCCESS" ]; then
        echo -e "${GREEN}$status${NC} $time_ms ms"
    else
        echo -e "${RED}$status${NC} $time_ms ms"
    fi
done

echo ""