package mutations

import (
	"context"

	"git.aiterp.net/rpdata/api/graphql/resolver/types"
	"git.aiterp.net/rpdata/api/internal/auth"
	"git.aiterp.net/rpdata/api/model/change"
	"git.aiterp.net/rpdata/api/model/story"
)

// StoryTagAddArgs is args for the addStoryTag mutation
type StoryTagAddArgs struct {
	Input *struct {
		ID  string
		Tag struct {
			Kind string
			Name string
		}
	}
}

// AddStoryTag resolves the addStoryTag mutation
func (r *MutationResolver) AddStoryTag(ctx context.Context, args *StoryTagAddArgs) (*types.StoryResolver, error) {
	input := args.Input
	tag := story.Tag{Kind: input.Tag.Kind, Name: input.Tag.Name}

	token := auth.TokenFromContext(ctx)
	if !token.Permitted("member", "story.edit") {
		return nil, ErrUnauthorized
	}

	story, err := story.FindID(input.ID)
	if err != nil {
		return nil, err
	}

	if story.Author != token.UserID && !token.Permitted("story.edit") {
		return nil, ErrPermissionDenied
	}

	err = story.AddTag(tag)
	if err != nil {
		return nil, err
	}

	go change.Submit("Story", "add.tag", token.UserID, story.ID, map[string]interface{}{
		"kind": tag.Kind,
		"name": tag.Name,
	})

	return &types.StoryResolver{S: story}, nil
}