99 lines
3.0 KiB
Go
99 lines
3.0 KiB
Go
 
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package processor
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import (
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"context"
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"strings"
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"time"
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"github.com/google/uuid"
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"apskel-pos-be/internal/models"
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"apskel-pos-be/internal/repository"
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)
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const (
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// leaderboardLimit is how many ranks a leaderboard shows unless asked, and
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// leaderboardMaxLimit the most it shows.
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leaderboardLimit = 10
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leaderboardMaxLimit = 100
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)
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// Leaderboard ranks the customers of the customer's organization by the EnakCoin they
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// won from games in one week, Monday to Sunday in Asia/Jakarta: this week, or the one
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// holding q.Date. A session counts in the week it started. Refunded, expired and
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// flagged sessions count for nothing.
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func (p *GameSessionProcessor) Leaderboard(ctx context.Context, customerID uuid.UUID, q models.EnakGameLeaderboardQuery) (*models.EnakGameLeaderboard, error) {
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day := walletDay(p.now())
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if s := strings.TrimSpace(q.Date); s != "" {
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d, err := time.ParseInLocation("2006-01-02", s, walletDisplayLocation)
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if err != nil {
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return nil, gameSessionRejected("date must be YYYY-MM-DD")
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}
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day = d
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}
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weekStart := leaderboardWeekStart(day)
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filter := repository.LeaderboardFilter{
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CustomerID: customerID, From: weekStart, To: weekStart.AddDate(0, 0, 7), Limit: q.Limit,
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}
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if filter.Limit < 1 || filter.Limit > leaderboardMaxLimit {
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filter.Limit = leaderboardLimit
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}
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if s := strings.TrimSpace(q.GameID); s != "" {
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id, err := uuid.Parse(s)
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if err != nil {
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return nil, gameSessionRejected("game_id must be a UUID")
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}
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filter.GameID = &id
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}
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customer, err := p.customers.GetCustomer(ctx, customerID)
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if err != nil {
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return nil, err
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}
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filter.OrganizationID = customer.OrganizationID
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rows, err := p.sessions.Leaderboard(ctx, filter)
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if err != nil {
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return nil, err
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}
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board := &models.EnakGameLeaderboard{
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WeekStart: weekStart.Format("2006-01-02"), WeekEnd: weekStart.AddDate(0, 0, 6).Format("2006-01-02"),
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GameID: filter.GameID, Entries: []models.EnakGameLeaderboardEntry{},
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}
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for _, row := range rows {
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entry := models.EnakGameLeaderboardEntry{
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Rank: row.Rank, Name: maskCustomerName(row.Name), Coins: row.Coins, IsMe: row.CustomerID == customerID,
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}
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if row.Rank <= filter.Limit {
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board.Entries = append(board.Entries, entry)
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}
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if entry.IsMe {
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me := entry
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board.Me = &me
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}
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}
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return board, nil
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}
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// leaderboardWeekStart is the Monday, at midnight in Asia/Jakarta, of the week of day.
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func leaderboardWeekStart(day time.Time) time.Time {
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day = walletDay(day)
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return day.AddDate(0, 0, -((int(day.Weekday()) + 6) % 7))
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}
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// maskCustomerName keeps the first word of a name and the first letter of every other
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// word: "Budi Santoso" is shown as "Budi S******". A word with a digit, as when a phone
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// number was used for the name, keeps only its first character, the first word too.
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func maskCustomerName(name string) string {
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words := strings.Fields(name)
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if len(words) == 0 {
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return "Pemain"
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}
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for i, w := range words {
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if i == 0 && !strings.ContainsAny(w, "0123456789") {
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continue
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}
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r := []rune(w)
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words[i] = string(r[0]) + strings.Repeat("*", len(r)-1)
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}
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return strings.Join(words, " ")
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}
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