package bash

import (
    "bufio"
    "fmt"
    "os"
    "strings"
    "github.com/cametendo/bash-for-windows/internal/shell"
)

func Run() error {
    args := os.Args[1:]
    
    if len(args) > 0 {
        if args[0] == "-c" && len(args) > 1 {
            // Execute a command string
            return runCommand(strings.Join(args[1:], " "))
        }
        // Run a script file
        return runFile(args[0])
    }
    
    return interactive()
}

func runCommand(cmd string) error {
    sh := shell.New()
    return sh.Execute(cmd)
}

func runFile(path string) error {
    data, err := os.ReadFile(path)
    if err != nil {
        return fmt.Errorf("%s: %v", path, err)
    }
    sh := shell.New()
    return sh.Execute(string(data))
}

func interactive() error {
    sh := shell.New()
    reader := bufio.NewReader(os.Stdin)
    
    fmt.Println("bash-for-windows v1.0.0")
    
    for {
        fmt.Print("bash$ ")
        input, err := reader.ReadString('\n')
        if err != nil {
            break
        }
        
        input = strings.TrimSpace(input)
        if input == "" {
            continue
        }
        if input == "exit" {
            break
        }
        
        if err := sh.Execute(input); err != nil {
            fmt.Fprintf(os.Stderr, "bash: %v\n", err)
        }
    }
    return nil
}