feat(reports): add analytics timeseries rollups

internal/handler/api/v1/analytics_handler.go

@@ -2,6 +2,7 @@ package v1
 
 import (
 	"net/http"
+	"strconv"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -21,6 +22,41 @@ func NewAnalyticsHandler(svc *service.AnalyticsService) *AnalyticsHandler {
 	return &AnalyticsHandler{svc: svc}
 }
 
+// Index returns metric time-series for the overview charts.
+// GET /api/v2/accounts/:account_id/reports?metric=...&since=...&until=...
+func (h *AnalyticsHandler) Index(c *gin.Context) {
+	accountID, ok := parseAccountID(c)
+	if !ok {
+		return
+	}
+	since, until, ok := parseDateRange(c)
+	if !ok {
+		return
+	}
+	metric := c.Query("metric")
+	if metric == "" {
+		response.AbortWithStatusError(c, http.StatusUnprocessableEntity, response.ErrBadRequest, "metric parameter is required")
+		return
+	}
+	id := uint(0)
+	if rawID := c.Query("id"); rawID != "" {
+		parsed, err := strconv.ParseUint(rawID, 10, 64)
+		if err != nil {
+			response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid id")
+			return
+		}
+		id = uint(parsed)
+	}
+	businessHours := c.Query("business_hours") == "true" || c.Query("business_hours") == "1"
+	result, err := h.svc.GetTimeseries(c.Request.Context(), accountID, metric, since, until, c.DefaultQuery("type", "account"), id, c.Query("group_by"), businessHours)
+	if err != nil {
+		applogger.L().Errorf("Timeseries report: %v", err)
+		response.AbortWithStatusError(c, http.StatusInternalServerError, response.ErrInternal, "failed to generate report")
+		return
+	}
+	response.OK(c, result)
+}
+
 // parseAccountID extracts account_id from URL params.
 func parseAccountID(c *gin.Context) (uint, bool) {
 	id := getAccountID(c)