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wakapi/models/leaderboard.go

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package models
import (
"github.com/duke-git/lancet/v2/maputil"
"github.com/duke-git/lancet/v2/slice"
"strings"
"time"
)
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type LeaderboardItem struct {
ID uint `json:"-" gorm:"primary_key; size:32"`
User *User `json:"-" gorm:"not null; constraint:OnUpdate:CASCADE,OnDelete:CASCADE"`
UserID string `json:"user_id" gorm:"not null; index:idx_leaderboard_user"`
Interval string `json:"interval" gorm:"not null; size:32; index:idx_leaderboard_combined"`
By *uint8 `json:"aggregated_by" gorm:"index:idx_leaderboard_combined"` // pointer because nullable
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Total time.Duration `json:"total" gorm:"not null" swaggertype:"primitive,integer"`
Key *string `json:"key" gorm:"size:255"` // pointer because nullable
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CreatedAt CustomTime `gorm:"type:timestamp; default:CURRENT_TIMESTAMP" swaggertype:"string" format:"date" example:"2006-01-02 15:04:05.000"`
}
// https://github.com/go-gorm/gorm/issues/5789
// https://github.com/go-gorm/gorm/issues/5284#issuecomment-1107775806
type LeaderboardItemRanked struct {
LeaderboardItem
Rank uint
}
func (l1 *LeaderboardItemRanked) Equals(l2 *LeaderboardItemRanked) bool {
return l1.ID == l2.ID
}
type Leaderboard []*LeaderboardItemRanked
func (l *Leaderboard) Add(item *LeaderboardItemRanked) {
if _, found := slice.Find[*LeaderboardItemRanked](*l, func(i int, item2 *LeaderboardItemRanked) bool {
return item.Equals(item2)
}); !found {
*l = append(*l, item)
}
}
func (l *Leaderboard) AddMany(items []*LeaderboardItemRanked) {
for _, item := range items {
l.Add(item)
}
}
func (l Leaderboard) UserIDs() []string {
return slice.Unique[string](slice.Map[*LeaderboardItemRanked, string](l, func(i int, item *LeaderboardItemRanked) string {
return item.UserID
}))
}
func (l Leaderboard) HasUser(userId string) bool {
return slice.Contain(l.UserIDs(), userId)
}
func (l Leaderboard) TopByKey(by uint8, key string) Leaderboard {
return slice.Filter[*LeaderboardItemRanked](l, func(i int, item *LeaderboardItemRanked) bool {
return item.By != nil && *item.By == by && item.Key != nil && strings.ToLower(*item.Key) == strings.ToLower(key)
})
}
func (l Leaderboard) TopKeys(by uint8) []string {
type keyTotal struct {
Key string
Total time.Duration
}
totalsMapped := make(map[string]*keyTotal, len(l))
for _, item := range l {
if item.Key == nil || item.By == nil || *item.By != by {
continue
}
key := strings.ToLower(*item.Key)
if _, ok := totalsMapped[key]; !ok {
totalsMapped[key] = &keyTotal{Key: *item.Key, Total: 0}
}
totalsMapped[key].Total += item.Total
}
totals := slice.Map[*keyTotal, keyTotal](maputil.Values[string, *keyTotal](totalsMapped), func(i int, item *keyTotal) keyTotal {
return *item
})
if err := slice.SortByField(totals, "Total", "desc"); err != nil {
return []string{} // TODO
}
return slice.Map[keyTotal, string](totals, func(i int, item keyTotal) string {
return item.Key
})
}
func (l Leaderboard) TopKeysByUser(by uint8, userId string) []string {
return Leaderboard(slice.Filter[*LeaderboardItemRanked](l, func(i int, item *LeaderboardItemRanked) bool {
return item.UserID == userId
})).TopKeys(by)
}
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func (l Leaderboard) LastUpdate() time.Time {
lastUpdate := time.Time{}
for _, item := range l {
if item.CreatedAt.T().After(lastUpdate) {
lastUpdate = item.CreatedAt.T()
}
}
return lastUpdate
}