package model

import (
	"testing"
	"time"
)

func TestGetDashboardDayStartUnixUsesShanghai(t *testing.T) {
	utcTime := time.Date(2026, 5, 5, 0, 30, 0, 0, time.UTC)
	got := getDashboardDayStartUnix(utcTime)

	want := time.Date(2026, 5, 5, 0, 0, 0, 0, dashboardMetricsLocation).Unix()
	if got != want {
		t.Fatalf("expected Shanghai day start %d, got %d", want, got)
	}
}

func TestAccumulateCacheMetrics(t *testing.T) {
	row := cacheMetricRow{
		PromptTokens: 100,
		Other:        `{"cache_read_tokens":40,"cache_write_tokens":10}`,
	}
	metrics := CacheDashboardMetrics{}

	accumulateCacheMetrics(&metrics, row)
	finalizeCacheMetrics(&metrics)

	if metrics.CacheReadTokens != 40 {
		t.Fatalf("expected cache read 40, got %d", metrics.CacheReadTokens)
	}
	if metrics.CacheWriteTokens != 10 {
		t.Fatalf("expected cache write 10, got %d", metrics.CacheWriteTokens)
	}
	if metrics.CacheTokens != 50 {
		t.Fatalf("expected cache tokens 50, got %d", metrics.CacheTokens)
	}
	if metrics.CacheHitRate <= 0 {
		t.Fatalf("expected positive hit rate, got %f", metrics.CacheHitRate)
	}
}