package convx

import (
	"fmt"
	"strconv"
)

// ToBool converts v to bool.
func ToBool(v interface{}) (bool, error) {
	switch v := v.(type) {
	case bool:
		return v, nil
	case string:
		if v, err := strconv.ParseBool(v); err == nil {
			return v, nil
		} else {
			return false, err
		}
	case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, float32, float64:
		i, err := ToInt(v)
		if err != nil {
			return false, err
		}
		return i > 0, nil
	default:
		return false, fmt.Errorf("unsupported type %T", v)
	}
}