fix prices reloading

frontend/src/hooks/useDashboardData.ts

@@ -3,9 +3,7 @@ import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 
 import {
   getCurrentPlan,
-  getSitePrices,
   getForecastPvSlotsRangeCorrected,
-  type SiteEffectivePriceRowDto,
 } from '../api/backend'
 import { getJson } from '../api/postgrest'
 import {
@@ -22,6 +20,7 @@ import type {
   HeatPumpLatestRow,
   ModeLogRecentRow,
   SiteStatusRow,
+  SiteEffectivePriceRow,
   Telemetry15m7dRow,
 } from '../types/ems'
 import type { PlanningIntervalDto } from '../types/plan'
@@ -197,7 +196,7 @@ export function useDashboardData(siteId: number | null) {
         auditHourly,
         modeLog,
         hpArr,
-        ...priceLists
+        priceRows,
       ] = await Promise.all([
         getCurrentPlan(siteId).catch((e: unknown) => {
           if (axios.isAxiosError(e) && e.response?.status === 404) {
@@ -221,7 +220,15 @@ export function useDashboardData(siteId: number | null) {
           limit: '200',
         }),
         getJson<HeatPumpLatestRow[]>('/vw_latest_heat_pump', { site_id: `eq.${siteId}` }),
-        ...[...dates].map((d) => getSitePrices(siteId, d)),
+        // Ceny bereme v jednom range dotazu přes PostgREST view (místo N× /api/v1/sites/{id}/prices?date=...).
+        // Okno: [windowStart, windowStart + TOTAL_SLOTS) pro mapování na sloty.
+        getJson<SiteEffectivePriceRow[]>('/vw_site_effective_price', {
+          site_id: `eq.${siteId}`,
+          interval_start: `gte.${new Date(windowStart).toISOString()}`,
+          interval_end: `lt.${new Date(windowStart + TOTAL_SLOTS * SLOT_MS).toISOString()}`,
+          order: 'interval_start.asc',
+          limit: String(TOTAL_SLOTS + 32),
+        }),
       ])
 
       const status = Array.isArray(statusArr) && statusArr[0] ? statusArr[0]! : null
@@ -235,7 +242,7 @@ export function useDashboardData(siteId: number | null) {
       }
 
       const priceBySlot = new Map<string, { buy: number | null; sell: number | null }>()
-      const flatPrices: SiteEffectivePriceRowDto[] = priceLists.flat() as SiteEffectivePriceRowDto[]
+      const flatPrices: SiteEffectivePriceRow[] = Array.isArray(priceRows) ? priceRows : []
       for (const r of flatPrices) {
         const k = slotTimeKey(new Date(r.interval_start).getTime())
         priceBySlot.set(k, {