package lox

import (
	"bufio"
	"fmt"
	"os"
)

var hadError = false

func RunFile(path string) {
	bytes, err := os.ReadFile(path)
	if err != nil {
		fmt.Println("Error reading file", path)
		os.Exit(74)
	}

	run(string(bytes))

	if hadError {
		os.Exit(65)
	}
}

func RunPrompt() {
	reader := bufio.NewReader(os.Stdin)

	for {
		fmt.Print("> ")

		line, err := reader.ReadString('\n')
		if err != nil {
			fmt.Println(err)
			os.Exit(74)
		}

		if line == "\n" {
			break
		}

		run(line)
		hadError = false
	}
}

func Error(line int, message string) {
	report(line, "", message)
}

func report(line int, where string, message string) {
	fmt.Printf("[line %d] Error %s: %s\n", line, where, message)
}

func run(source string) {
	fmt.Println(source)
}