package logs

import (
	"errors"
	"strconv"
	"time"

	"git.aiterp.net/rpdata/api/internal/counter"
	"git.aiterp.net/rpdata/api/model/channel"
	"git.aiterp.net/rpdata/api/models"
	"github.com/globalsign/mgo/bson"
)

// Add creates a new Log
func Add(date time.Time, channelName, title, eventName, description string, open bool) (models.Log, error) {
	nextID, err := counter.Next("auto_increment", "Log")
	if err != nil {
		return models.Log{}, errors.New("Failed to allocate short ID: " + err.Error())
	}

	_, err = channel.Ensure(channelName, open)
	if err != nil {
		return models.Log{}, errors.New("Failed to ensure channel: " + err.Error())
	}

	log := models.Log{
		ID:           makeLogID(date, channelName),
		ShortID:      "L" + strconv.Itoa(nextID),
		Date:         date,
		ChannelName:  channelName,
		Title:        title,
		EventName:    eventName,
		Description:  description,
		Open:         open,
		CharacterIDs: nil,
	}

	err = collection.Insert(log)
	if err != nil {
		return models.Log{}, err
	}

	// There can be only one open log in the same channel. TODO: Transaction
	if open {
		query := bson.M{
			"_id":     bson.M{"$ne": log.ID},
			"open":    true,
			"channel": log.ChannelName,
		}

		go collection.UpdateAll(query, bson.M{"$set": bson.M{"open": false}})
	}

	return log, nil
}