package queries

import (
	"context"
	"errors"

	"git.aiterp.net/rpdata/api/graphql/resolver/types"
	"git.aiterp.net/rpdata/api/model/character"
)

// ErrIncorrectArguments is returned by character query.
var ErrIncorrectArguments = errors.New("You can only query character by ID or Nick")

// CharacterArgs is args for character query
type CharacterArgs struct {
	ID   *string
	Nick *string
}

// Character resolves the character query
func (r *QueryResolver) Character(ctx context.Context, args *CharacterArgs) (*types.CharacterResolver, error) {
	var char character.Character
	var err error

	if args.Nick != nil && args.ID != nil {
		return nil, ErrIncorrectArguments
	}

	switch {
	case args.ID != nil:
		char, err = character.FindID(*args.ID)
	case args.Nick != nil:
		char, err = character.FindNick(*args.Nick)
	default:
		err = ErrIncorrectArguments
	}

	if err != nil {
		return nil, err
	}

	return &types.CharacterResolver{C: char}, nil
}