// Copyright (c) 2024 Celestino Amoroso (celestino.amoroso@gmail.com).
// All rights reserved.

// common-errors.go
package expr

import (
	"fmt"
)

func errTooFewParams(funcName string, minArgs, maxArgs, argCount int) (err error) {
	if maxArgs < 0 {
		err = fmt.Errorf("%s(): too few params -- expected %d or more, got %d", funcName, minArgs, argCount)
	} else {
		err = fmt.Errorf("%s(): too few params -- expected %d, got %d", funcName, minArgs, argCount)
	}
	return
}

func errTooMuchParams(funcName string, maxArgs, argCount int) (err error) {
	err = fmt.Errorf("%s(): too much params -- expected %d, got %d", funcName, maxArgs, argCount)
	return
}

// --- General errors

func errCantConvert(funcName string, value any, kind string) error {
	if typer, ok := value.(Typer); ok {
		return fmt.Errorf("%s(): can't convert %s to %s", funcName, typer.TypeName(), kind)
	} else {
		return fmt.Errorf("%s(): can't convert %T to %s", funcName, value, kind)
	}
}

func errExpectedGot(funcName string, kind string, value any) error {
	return fmt.Errorf("%s() expected %s, got %T (%v)", funcName, kind, value, value)
}

func errFuncDivisionByZero(funcName string) error {
	return fmt.Errorf("%s(): division by zero", funcName)
}

func errDivisionByZero() error {
	return fmt.Errorf("division by zero")
}

// --- Parameter errors

// func errOneParam(funcName string) error {
// 	return fmt.Errorf("%s() requires exactly one param", funcName)
// }

func errMissingRequiredParameter(funcName, paramName string) error {
	return fmt.Errorf("%s() missing required parameter %q", funcName, paramName)
}

func errInvalidParameterValue(funcName, paramName string, paramValue any) error {
	return fmt.Errorf("%s() invalid value %T (%v) for parameter %q", funcName, paramValue, paramValue, paramName)
}

func errWrongParamType(funcName, paramName, paramType string, paramValue any) error {
	return fmt.Errorf("%s() the %q parameter must be a %s, got a %T (%v)", funcName, paramName, paramType, paramValue, paramValue)
}