package mutations

import (
	"context"

	"git.aiterp.net/rpdata/api/graphql/resolver/types"
	"git.aiterp.net/rpdata/api/internal/session"
	"git.aiterp.net/rpdata/api/model/change"
	"git.aiterp.net/rpdata/api/model/log"
)

// PostMoveArgs is args for movePost mutation
type PostMoveArgs struct {
	Input *struct {
		ID         string
		ToPosition int32
	}
}

// MovePost resolves the movePost mutation
func (r *MutationResolver) MovePost(ctx context.Context, args *PostMoveArgs) (*types.PostResolver, error) {
	input := args.Input

	user := session.FromContext(ctx).User()
	if user == nil || !user.Permitted("post.move") {
		return nil, ErrUnauthorized
	}

	post, err := log.FindPostID(input.ID)
	if err != nil {
		return nil, err
	}

	err = post.Move(int(input.ToPosition))
	if err != nil {
		return nil, err
	}

	go change.Submit("Post", "move", user.ID, post.ID, map[string]interface{}{
		"logId":       post.LogID,
		"targetIndex": input.ToPosition,
	})

	return &types.PostResolver{P: post}, nil
}