chore: initial public commit

engine/handlers/handlers.go

@@ -0,0 +1,77 @@
+// package handlers implements route handlers
+package handlers
+
+import (
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/gabehf/koito/internal/db"
+	"github.com/gabehf/koito/internal/logger"
+)
+
+const defaultLimitSize = 100
+const maximumLimit = 500
+
+func OptsFromRequest(r *http.Request) db.GetItemsOpts {
+	l := logger.FromContext(r.Context())
+
+	limitStr := r.URL.Query().Get("limit")
+	limit, err := strconv.Atoi(limitStr)
+	if err != nil {
+		l.Debug().Msgf("query parameter 'limit' not specified, using default %d", defaultLimitSize)
+		limit = defaultLimitSize
+	}
+	if limit > maximumLimit {
+		l.Debug().Msgf("limit must not be greater than %d, using default %d", maximumLimit, defaultLimitSize)
+		limit = defaultLimitSize
+	}
+	pageStr := r.URL.Query().Get("page")
+	page, _ := strconv.Atoi(pageStr)
+	if page < 1 {
+		page = 1
+	}
+
+	weekStr := r.URL.Query().Get("week")
+	week, _ := strconv.Atoi(weekStr)
+	monthStr := r.URL.Query().Get("month")
+	month, _ := strconv.Atoi(monthStr)
+	yearStr := r.URL.Query().Get("year")
+	year, _ := strconv.Atoi(yearStr)
+
+	artistIdStr := r.URL.Query().Get("artist_id")
+	artistId, _ := strconv.Atoi(artistIdStr)
+	albumIdStr := r.URL.Query().Get("album_id")
+	albumId, _ := strconv.Atoi(albumIdStr)
+	trackIdStr := r.URL.Query().Get("track_id")
+	trackId, _ := strconv.Atoi(trackIdStr)
+
+	var period db.Period
+	switch strings.ToLower(r.URL.Query().Get("period")) {
+	case "day":
+		period = db.PeriodDay
+	case "week":
+		period = db.PeriodWeek
+	case "month":
+		period = db.PeriodMonth
+	case "year":
+		period = db.PeriodYear
+	case "all_time":
+		period = db.PeriodAllTime
+	default:
+		l.Debug().Msgf("Using default value '%s' for period", db.PeriodDay)
+		period = db.PeriodDay
+	}
+
+	return db.GetItemsOpts{
+		Limit:    limit,
+		Period:   period,
+		Page:     page,
+		Week:     week,
+		Month:    month,
+		Year:     year,
+		ArtistID: artistId,
+		AlbumID:  albumId,
+		TrackID:  trackId,
+	}
+}