package errors

import (
	"errors"
	"os"
	"strings"
)

// Exit codes
const (
	ExitSuccess      = 0
	ExitGeneralError = 1
	ExitConfigError  = 2
	ExitFileError    = 3
	ExitStorageError = 4
	ExitNetworkError = 5
	ExitInterrupted  = 130
)

var (
	// Config errors
	ErrNoGlobalConfig  = errors.New("no storage configured; run 'aevs config' first")
	ErrNoProjectConfig = errors.New("no aevs.yaml found; run 'aevs init' first")
	ErrConfigExists    = errors.New("aevs.yaml already exists; use --force to overwrite")
	ErrInvalidProject  = errors.New("invalid project name; use only a-z, 0-9, -, _")

	// Storage errors
	ErrProjectNotFound = errors.New("project not found in storage")
	ErrAccessDenied    = errors.New("access denied; check your credentials")
	ErrBucketNotFound  = errors.New("bucket not found")

	// File errors
	ErrFileNotFound = errors.New("file not found")
	ErrNoEnvFiles   = errors.New("no env files found")
)

// GetExitCode returns the appropriate exit code for an error
func GetExitCode(err error) int {
	if err == nil {
		return ExitSuccess
	}

	// Check for specific errors
	switch {
	case errors.Is(err, ErrNoGlobalConfig),
		errors.Is(err, ErrNoProjectConfig),
		errors.Is(err, ErrConfigExists),
		errors.Is(err, ErrInvalidProject):
		return ExitConfigError

	case errors.Is(err, ErrFileNotFound),
		errors.Is(err, ErrNoEnvFiles),
		os.IsNotExist(err):
		return ExitFileError

	case errors.Is(err, ErrProjectNotFound),
		errors.Is(err, ErrAccessDenied),
		errors.Is(err, ErrBucketNotFound):
		return ExitStorageError

	case strings.Contains(err.Error(), "connection"),
		strings.Contains(err.Error(), "network"),
		strings.Contains(err.Error(), "timeout"):
		return ExitNetworkError

	default:
		return ExitGeneralError
	}
}