✨ New what's new

pkg/internal/http/api/whats_new_api.go

@@ -16,33 +16,28 @@ func getWhatsNew(c *fiber.Ctx) error {
 	}
 	user := c.Locals("user").(authm.Account)
 
-	pivot := c.QueryInt("pivot", 0)
-	if pivot < 0 {
-		return fiber.NewError(fiber.StatusBadRequest, "pivot must be greater than zero")
-	}
-
-	take := c.QueryInt("take", 10)
-	if take > 100 {
-		take = 100
-	}
-
-	tx := database.C
-
 	var lookupRange []uint
+	var lookupPivots []int
 	var ignoreRange []uint
 	var channelMembers []models.ChannelMember
-	if err := database.C.Where("account_id = ?", user.ID).Select("id", "channel_id").Find(&channelMembers).Error; err != nil {
+	if err := database.C.Where("account_id = ?", user.ID).
+		Select("id", "channel_id", "reading_anchor").
+		Find(&channelMembers).Error; err != nil {
 		return fiber.NewError(fiber.StatusInternalServerError, fmt.Sprintf("unable to get channel identity of you: %v", err))
 	} else {
 		for _, member := range channelMembers {
+			if member.ReadingAnchor == nil {
+				continue
+			}
 			lookupRange = append(lookupRange, member.ChannelID)
+			lookupPivots = append(lookupPivots, *member.ReadingAnchor)
 			ignoreRange = append(ignoreRange, member.ID)
 		}
 	}
 
+	tx := database.C
 	tx = tx.Where("channel_id IN ?", lookupRange)
 	tx = tx.Where("sender_id NOT IN ?", ignoreRange)
-	tx = tx.Where("id > ?", pivot)
 
 	countTx := tx
 	var count int64
@@ -50,20 +45,18 @@ func getWhatsNew(c *fiber.Ctx) error {
 		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
 	}
 
-	var items []models.Event
-	if err := tx.
-		Limit(take).
-		Order("created_at DESC").
-		Preload("Sender").
-		Preload("Channel").
-		Preload("Channel.Realm").
-		Find(&items).Error; err != nil {
-		return fiber.NewError(fiber.StatusBadRequest, err.Error())
+	var result []struct {
+		ChannelID          uint `json:"channel_id"`
+		UnreadMessageCount int  `json:"count"`
+	}
+	if err := database.C.Table("channel_members cm").
+		Select("cm.channel_id, COUNT(m.id) AS unread_message_count").
+		Joins("JOIN messages m ON m.channel_id = cm.channel_id").
+		Where("m.id > cm.reading_anchor AND cm.account_id = ?", 1).
+		Group("cm.channel_id").
+		Scan(&result).Error; err != nil {
+		return fiber.NewError(fiber.StatusInternalServerError, err.Error())
 	}
 
-	return c.JSON(fiber.Map{
-		"count": count,
-		"data":  items,
-	})
-
+	return c.JSON(result)
 }