feat: 补全多云资产与账单同步

- 接入 AWS、华为云和 Azure 资产及账单 API

- 按原始币种隔离统计并修正账号服务器数

- 修复侧栏菜单展开后的滚动行为

backend/cloud/azure_billing.go

@@ -0,0 +1,105 @@
+package cloud
+
+import (
+	"encoding/json"
+	"fmt"
+	"math"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// FetchDailyBill 通过 Azure Cost Management Query 拉取订阅单日成本。 // Logan.Li
+func (p *AzureProvider) FetchDailyBill(billingDate string) ([]CloudBillingRecord, error) {
+	start, err := time.Parse("2006-01-02", billingDate)
+	if err != nil {
+		return nil, fmt.Errorf("账单日期格式应为 YYYY-MM-DD")
+	}
+	if p.subscriptionID == "" {
+		return nil, fmt.Errorf("Azure AccessKey 应为 租户ID:订阅ID:客户端ID")
+	}
+	payload := map[string]interface{}{
+		"type":      "ActualCost",
+		"timeframe": "Custom",
+		"timePeriod": map[string]string{
+			"from": start.Format("2006-01-02T00:00:00Z"),
+			"to":   start.AddDate(0, 0, 1).Format("2006-01-02T00:00:00Z"),
+		},
+		"dataset": map[string]interface{}{
+			"granularity": "Daily",
+			"aggregation": map[string]interface{}{
+				"totalCost": map[string]string{"name": "PreTaxCost", "function": "Sum"},
+			},
+			"grouping": []map[string]string{
+				{"type": "Dimension", "name": "ServiceName"},
+				{"type": "Dimension", "name": "ResourceLocation"},
+			},
+		},
+	}
+	path := "/subscriptions/" + p.subscriptionID + "/providers/Microsoft.CostManagement/query?api-version=2023-11-01"
+	body, err := p.post(path, payload)
+	if err != nil {
+		return nil, err
+	}
+	var response struct {
+		Properties struct {
+			Columns []struct {
+				Name string `json:"name"`
+			} `json:"columns"`
+			Rows [][]interface{} `json:"rows"`
+		} `json:"properties"`
+	}
+	if err = json.Unmarshal(body, &response); err != nil {
+		return nil, fmt.Errorf("解析 Azure Cost Management 响应失败: %w", err)
+	}
+	columnIndex := map[string]int{}
+	for index, column := range response.Properties.Columns {
+		columnIndex[strings.ToLower(column.Name)] = index
+	}
+	valueAt := func(row []interface{}, names ...string) interface{} {
+		for _, name := range names {
+			if index, ok := columnIndex[strings.ToLower(name)]; ok && index < len(row) {
+				return row[index]
+			}
+		}
+		return nil
+	}
+	type aggregationKey struct {
+		service string
+		region  string
+	}
+	aggregation := map[aggregationKey]float64{}
+	currency := "USD"
+	for _, row := range response.Properties.Rows {
+		cost, _ := strconv.ParseFloat(fmt.Sprint(valueAt(row, "PreTaxCost", "Cost", "totalCost")), 64)
+		if cost == 0 {
+			continue
+		}
+		service := firstNonEmpty(fmt.Sprint(valueAt(row, "ServiceName")), "其他")
+		region := firstNonEmpty(fmt.Sprint(valueAt(row, "ResourceLocation")), "全局")
+		if value := fmt.Sprint(valueAt(row, "Currency")); value != "" && value != "<nil>" {
+			currency = value
+		}
+		aggregation[aggregationKey{service: service, region: region}] += cost
+	}
+	keys := make([]aggregationKey, 0, len(aggregation))
+	for key := range aggregation {
+		keys = append(keys, key)
+	}
+	sort.Slice(keys, func(i, j int) bool {
+		if keys[i].service == keys[j].service {
+			return keys[i].region < keys[j].region
+		}
+		return keys[i].service < keys[j].service
+	})
+	records := make([]CloudBillingRecord, 0, len(keys))
+	for _, key := range keys {
+		records = append(records, CloudBillingRecord{
+			BillingDate: billingDate, Provider: "azure", Cost: math.Round(aggregation[key]*1000000) / 1000000,
+			Currency: currency, Service: key.service, Region: key.region,
+			Description: "云 API 自动同步（Azure Cost Management）",
+		})
+	}
+	return records, nil
+}