package logs

import (
	"git.aiterp.net/rpdata/api/models"
	"github.com/globalsign/mgo/bson"
)

// Filter for the List() function
type Filter struct {
	Search     *string
	Characters *[]string
	Channels   *[]string
	Events     *[]string
	Open       *bool
	Limit      int
}

// List lists all logs
func List(filter *Filter) ([]models.Log, error) {
	query := bson.M{}
	limit := 0

	if filter != nil {
		// Run a text search
		if filter.Search != nil {
			searchResults, err := search(*filter.Search)
			if err != nil {
				return nil, err
			}

			// Posts always use shortId to refer to the log
			query["shortId"] = bson.M{"$in": searchResults}
		}

		// Find logs including any of the specified events and channels
		if filter.Channels != nil {
			query["channel"] = bson.M{"$in": *filter.Channels}
		}
		if filter.Events != nil {
			query["event"] = bson.M{"$in": *filter.Events}
		}

		// Find logs including all of the specified character IDs.
		if filter.Characters != nil {
			query["characterIds"] = bson.M{"$all": *filter.Characters}
		}

		// Limit to only open logs
		if filter.Open != nil {
			query["open"] = *filter.Open
		}

		// Set the limit from the filter
		limit = filter.Limit
	}

	return list(query, limit)
}

func search(text string) ([]string, error) {
	query := bson.M{
		"$text": bson.M{"$search": text},
		"logId": bson.M{"$ne": nil},
	}

	ids := make([]string, 0, 64)
	err := postCollection.Find(query).Distinct("logId", &ids)

	return ids, err
}