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/huawei_billing.go

@@ -0,0 +1,98 @@
+package cloud
+
+import (
+	"encoding/json"
+	"fmt"
+	"math"
+	"net/url"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+)
+
+// FetchDailyBill 通过华为云 BSS 费用流水接口拉取单日账单。 // Logan.Li
+func (p *HuaweiProvider) FetchDailyBill(billingDate string) ([]CloudBillingRecord, error) {
+	if _, err := time.Parse("2006-01-02", billingDate); err != nil {
+		return nil, fmt.Errorf("账单日期格式应为 YYYY-MM-DD")
+	}
+	type aggregationKey struct {
+		service string
+		region  string
+	}
+	aggregation := map[aggregationKey]float64{}
+	const pageSize = 1000
+	for offset := 0; ; offset += pageSize {
+		query := url.Values{
+			"cycle":           {billingDate[:7]},
+			"bill_date_begin": {billingDate},
+			"bill_date_end":   {billingDate},
+			"offset":          {strconv.Itoa(offset)},
+			"limit":           {strconv.Itoa(pageSize)},
+		}
+		body, err := p.signedGet("https://bss.myhuaweicloud.com/v2/bills/customer-bills/fee-records?"+query.Encode(), "bss")
+		if err != nil {
+			return nil, err
+		}
+		var response struct {
+			TotalCount int `json:"total_count"`
+			FeeRecords []struct {
+				CloudServiceType     string          `json:"cloud_service_type"`
+				CloudServiceTypeName string          `json:"cloud_service_type_name"`
+				ResourceTypeName     string          `json:"resource_type_name"`
+				Region               string          `json:"region"`
+				RegionName           string          `json:"region_name"`
+				Amount               json.RawMessage `json:"amount"`
+				OfficialAmount       json.RawMessage `json:"official_amount"`
+				DiscountAmount       json.RawMessage `json:"discount_amount"`
+			} `json:"fee_records"`
+		}
+		if err = json.Unmarshal(body, &response); err != nil {
+			return nil, fmt.Errorf("解析华为云 BSS 响应失败: %w", err)
+		}
+		for _, item := range response.FeeRecords {
+			cost := huaweiBillAmount(item.Amount)
+			if cost == 0 {
+				cost = huaweiBillAmount(item.OfficialAmount) - huaweiBillAmount(item.DiscountAmount)
+			}
+			if cost == 0 {
+				continue
+			}
+			service := firstNonEmpty(item.CloudServiceTypeName, item.ResourceTypeName, item.CloudServiceType, "其他")
+			region := firstNonEmpty(item.RegionName, item.Region, "全局")
+			aggregation[aggregationKey{service: service, region: region}] += cost
+		}
+		if len(response.FeeRecords) < pageSize || (response.TotalCount > 0 && offset+pageSize >= response.TotalCount) {
+			break
+		}
+	}
+	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: "huawei", Cost: math.Round(aggregation[key]*100) / 100,
+			Currency: "CNY", Service: key.service, Region: key.region,
+			Description: "云 API 自动同步（华为云 BSS）",
+		})
+	}
+	return records, nil
+}
+
+// huaweiBillAmount 兼容华为云金额字段的字符串和数字格式。 // Logan.Li
+func huaweiBillAmount(raw json.RawMessage) float64 {
+	value := strings.Trim(strings.TrimSpace(string(raw)), "\"")
+	amount, err := strconv.ParseFloat(value, 64)
+	if err != nil {
+		return 0
+	}
+	return amount
+}