feat: add pagination and limit to the api, add db indexing

internal/pkg/controller/alerts_controller.go

@@ -4,7 +4,9 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"log/slog"
 	"net/http"
+	"strconv"
 
 	"github.com/AFASystems/presence/internal/pkg/api/response"
 	"github.com/AFASystems/presence/internal/pkg/service"
@@ -15,7 +17,31 @@ import (
 
 func AlertsListController(db *gorm.DB, ctx context.Context) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		alerts, err := service.GetAllAlerts(db, ctx)
+		query := r.URL.Query()
+
+		lStr := query.Get("limit")
+		if lStr == "" {
+			lStr = "100"
+		}
+		limit, err := strconv.Atoi(lStr)
+		if err != nil {
+			slog.Error("invalid limit parameter", "value", lStr)
+			response.BadRequest(w, "invalid limit parameter")
+			return
+		}
+
+		oStr := query.Get("offset")
+		if oStr == "" {
+			oStr = "0"
+		}
+		offset, err := strconv.Atoi(oStr)
+		if err != nil {
+			slog.Error("invalid offset parameter", "value", oStr)
+			response.BadRequest(w, "invalid offset parameter")
+			return
+		}
+
+		alerts, err := service.GetAllAlerts(db, ctx, limit, offset)
 		if err != nil {
 			response.InternalError(w, "failed to list alerts", err)
 			return

internal/pkg/controller/floor_controller.go

@@ -3,7 +3,9 @@ package controller
 import (
 	"context"
 	"encoding/json"
+	"log/slog"
 	"net/http"
+	"strconv"
 
 	"github.com/AFASystems/presence/internal/pkg/api/response"
 	"github.com/AFASystems/presence/internal/pkg/model"
@@ -34,12 +36,32 @@ func FloorAddController(db *gorm.DB, context context.Context) http.HandlerFunc {
 
 func FloorListController(db *gorm.DB, context context.Context) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		var floors []model.Floor
-		if err := db.WithContext(context).Find(&floors).Error; err != nil {
-			response.InternalError(w, "failed to list floors", err)
+		query := r.URL.Query()
+
+		lStr := query.Get("limit")
+		if lStr == "" {
+			lStr = "100"
+		}
+		limit, err := strconv.Atoi(lStr)
+		if err != nil {
+			slog.Error("invalid limit parameter", "value", lStr)
+			response.BadRequest(w, "invalid limit parameter")
+			return
+		}
+
+		oStr := query.Get("offset")
+		if oStr == "" {
+			oStr = "0"
+		}
+		offset, err := strconv.Atoi(oStr)
+		if err != nil {
+			slog.Error("invalid offset parameter", "value", oStr)
+			response.BadRequest(w, "invalid offset parameter")
 			return
 		}
-		if err := db.WithContext(context).Find(&floors).Error; err != nil {
+
+		var floors []model.Floor
+		if err := db.WithContext(context).Limit(limit).Offset(offset).Find(&floors).Error; err != nil {
 			response.InternalError(w, "failed to list floors", err)
 			return
 		}

internal/pkg/controller/gateways_controller.go

@@ -3,7 +3,9 @@ package controller
 import (
 	"context"
 	"encoding/json"
+	"log/slog"
 	"net/http"
+	"strconv"
 
 	"github.com/AFASystems/presence/internal/pkg/api/response"
 	"github.com/AFASystems/presence/internal/pkg/model"
@@ -35,8 +37,32 @@ func GatewayAddController(db *gorm.DB, context context.Context) http.HandlerFunc
 
 func GatewayListController(db *gorm.DB, context context.Context) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		query := r.URL.Query()
+
+		lStr := query.Get("limit")
+		if lStr == "" {
+			lStr = "100"
+		}
+		limit, err := strconv.Atoi(lStr)
+		if err != nil {
+			slog.Error("invalid limit parameter", "value", lStr)
+			response.BadRequest(w, "invalid limit parameter")
+			return
+		}
+
+		oStr := query.Get("offset")
+		if oStr == "" {
+			oStr = "0"
+		}
+		offset, err := strconv.Atoi(oStr)
+		if err != nil {
+			slog.Error("invalid offset parameter", "value", oStr)
+			response.BadRequest(w, "invalid offset parameter")
+			return
+		}
+
 		var gateways []model.Gateway
-		if err := db.WithContext(context).Find(&gateways).Error; err != nil {
+		if err := db.WithContext(context).Limit(limit).Offset(offset).Find(&gateways).Error; err != nil {
 			response.InternalError(w, "failed to list gateways", err)
 			return
 		}

internal/pkg/controller/trackers_controller.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"log/slog"
 	"net/http"
+	"strconv"
 
 	"github.com/AFASystems/presence/internal/pkg/api/response"
 	"github.com/AFASystems/presence/internal/pkg/kafkaclient"
@@ -67,8 +68,32 @@ func TrackerAdd(db *gorm.DB, writer *kafka.Writer, context context.Context) http
 
 func TrackerList(db *gorm.DB, context context.Context) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		query := r.URL.Query()
+
+		lStr := query.Get("limit")
+		if lStr == "" {
+			lStr = "100"
+		}
+		limit, err := strconv.Atoi(lStr)
+		if err != nil {
+			slog.Error("invalid limit parameter", "value", lStr)
+			response.BadRequest(w, "invalid limit parameter")
+			return
+		}
+
+		oStr := query.Get("offset")
+		if oStr == "" {
+			oStr = "0"
+		}
+		offset, err := strconv.Atoi(oStr)
+		if err != nil {
+			slog.Error("invalid offset parameter", "value", oStr)
+			response.BadRequest(w, "invalid offset parameter")
+			return
+		}
+
 		var list []model.Tracker
-		if err := db.WithContext(context).Find(&list).Error; err != nil {
+		if err := db.WithContext(context).Limit(limit).Offset(offset).Find(&list).Error; err != nil {
 			response.InternalError(w, "failed to list trackers", err)
 			return
 		}

internal/pkg/controller/trackerzones_controller.go

@@ -3,7 +3,9 @@ package controller
 import (
 	"context"
 	"encoding/json"
+	"log/slog"
 	"net/http"
+	"strconv"
 
 	"github.com/AFASystems/presence/internal/pkg/api/response"
 	"github.com/AFASystems/presence/internal/pkg/model"
@@ -34,8 +36,32 @@ func TrackerZoneAddController(db *gorm.DB, context context.Context) http.Handler
 
 func TrackerZoneListController(db *gorm.DB, context context.Context) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		query := r.URL.Query()
+
+		lStr := query.Get("limit")
+		if lStr == "" {
+			lStr = "100"
+		}
+		limit, err := strconv.Atoi(lStr)
+		if err != nil {
+			slog.Error("invalid limit parameter", "value", lStr)
+			response.BadRequest(w, "invalid limit parameter")
+			return
+		}
+
+		oStr := query.Get("offset")
+		if oStr == "" {
+			oStr = "0"
+		}
+		offset, err := strconv.Atoi(oStr)
+		if err != nil {
+			slog.Error("invalid offset parameter", "value", oStr)
+			response.BadRequest(w, "invalid offset parameter")
+			return
+		}
+
 		var list []model.TrackerZones
-		if err := db.WithContext(context).Find(&list).Error; err != nil {
+		if err := db.WithContext(context).Limit(limit).Offset(offset).Find(&list).Error; err != nil {
 			response.InternalError(w, "failed to list tracker zones", err)
 			return
 		}

internal/pkg/controller/zone_controller.go

@@ -3,7 +3,9 @@ package controller
 import (
 	"context"
 	"encoding/json"
+	"log/slog"
 	"net/http"
+	"strconv"
 
 	"github.com/AFASystems/presence/internal/pkg/api/response"
 	"github.com/AFASystems/presence/internal/pkg/model"
@@ -34,8 +36,32 @@ func ZoneAddController(db *gorm.DB, context context.Context) http.HandlerFunc {
 
 func ZoneListController(db *gorm.DB, context context.Context) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
+		query := r.URL.Query()
+
+		lStr := query.Get("limit")
+		if lStr == "" {
+			lStr = "100"
+		}
+		limit, err := strconv.Atoi(lStr)
+		if err != nil {
+			slog.Error("invalid limit parameter", "value", lStr)
+			response.BadRequest(w, "invalid limit parameter")
+			return
+		}
+
+		oStr := query.Get("offset")
+		if oStr == "" {
+			oStr = "0"
+		}
+		offset, err := strconv.Atoi(oStr)
+		if err != nil {
+			slog.Error("invalid offset parameter", "value", oStr)
+			response.BadRequest(w, "invalid offset parameter")
+			return
+		}
+
 		var zones []model.Zone
-		if err := db.WithContext(context).Find(&zones).Error; err != nil {
+		if err := db.WithContext(context).Limit(limit).Offset(offset).Find(&zones).Error; err != nil {
 			response.InternalError(w, "failed to list zones", err)
 			return
 		}

internal/pkg/model/tracks.go

@@ -4,13 +4,13 @@ import "time"
 
 type Tracks struct {
 	ID          uint      `gorm:"unique;primaryKey;autoIncrement"`
-	UUID        string    `json:"id" gorm:"foreignKey"`
-	Timestamp   time.Time `json:"timestamp"`
+	UUID        string    `json:"id" gorm:"foreignKey;index:idx_tracks_uuid_ts,priority:1"`
+	Timestamp   time.Time `json:"timestamp" gorm:"index:idx_tracks_tracker_ts,priority:2;index:idx_tracks_uuid_ts,priority:2"`
 	Type        string    `json:"type"`
 	Status      string    `json:"status"`
 	Gateway     string    `json:"gateway" gorm:"index"`
 	GatewayMac  string    `json:"gatewayMac"`
-	Tracker     string    `json:"tracker" gorm:"index"`
+	Tracker     string    `json:"tracker" gorm:"index:idx_tracks_tracker_ts,priority:1"`
 	TrackerMac  string    `json:"trackerMac"`
 	Subject     string    `json:"subject"`
 	SubjectName string    `json:"subjectName"`

internal/pkg/service/alert_service.go

@@ -21,9 +21,9 @@ func DeleteAlertByTrackerID(trackerID string, db *gorm.DB, ctx context.Context)
 	return nil
 }
 
-func GetAllAlerts(db *gorm.DB, ctx context.Context) ([]model.Alert, error) {
+func GetAllAlerts(db *gorm.DB, ctx context.Context, limit, offset int) ([]model.Alert, error) {
 	var alerts []model.Alert
-	if err := db.WithContext(ctx).Find(&alerts).Error; err != nil {
+	if err := db.WithContext(ctx).Limit(limit).Offset(offset).Find(&alerts).Error; err != nil {
 		return []model.Alert{}, err
 	}