594f0d17d1
M1: CheckBalanceAfterDeduction (63→18 lines) decomposed into:
canNotifyBalance, resolveUserEffectiveThreshold, crossedDownward, dispatchBalanceLowEmail
M3: New Account.QuotaNotifyConfig(dim) method replaces 9 hardcoded getters
(getters kept as thin wrappers for backward compatibility)
M4: checkQuotaDimCrossings + checkQuotaDimCrossingsFromState merged into one
function taking pre-built []quotaDim; caller builds dims conditionally
495 lines
21 KiB
Go
495 lines
21 KiB
Go
package service
|
||
|
||
import (
|
||
"context"
|
||
"fmt"
|
||
"html"
|
||
"log/slog"
|
||
"strconv"
|
||
"strings"
|
||
"time"
|
||
)
|
||
|
||
const (
|
||
emailSendTimeout = 30 * time.Second
|
||
|
||
// Threshold type values
|
||
thresholdTypeFixed = "fixed"
|
||
thresholdTypePercentage = "percentage"
|
||
|
||
// Quota dimension labels
|
||
quotaDimDaily = "daily"
|
||
quotaDimWeekly = "weekly"
|
||
quotaDimTotal = "total"
|
||
|
||
defaultSiteName = "Sub2API"
|
||
)
|
||
|
||
// quotaDimLabels maps dimension names to display labels.
|
||
var quotaDimLabels = map[string]string{
|
||
quotaDimDaily: "日限额 / Daily",
|
||
quotaDimWeekly: "周限额 / Weekly",
|
||
quotaDimTotal: "总限额 / Total",
|
||
}
|
||
|
||
// AccountQuotaReader provides read access to account quota data.
|
||
type AccountQuotaReader interface {
|
||
GetByID(ctx context.Context, id int64) (*Account, error)
|
||
}
|
||
|
||
// BalanceNotifyService handles balance and quota threshold notifications.
|
||
type BalanceNotifyService struct {
|
||
emailService *EmailService
|
||
settingRepo SettingRepository
|
||
accountRepo AccountQuotaReader
|
||
}
|
||
|
||
// NewBalanceNotifyService creates a new BalanceNotifyService.
|
||
func NewBalanceNotifyService(emailService *EmailService, settingRepo SettingRepository, accountRepo AccountQuotaReader) *BalanceNotifyService {
|
||
return &BalanceNotifyService{
|
||
emailService: emailService,
|
||
settingRepo: settingRepo,
|
||
accountRepo: accountRepo,
|
||
}
|
||
}
|
||
|
||
// resolveBalanceThreshold returns the effective balance threshold.
|
||
// For percentage type, it computes threshold = totalRecharged * percentage / 100.
|
||
func resolveBalanceThreshold(threshold float64, thresholdType string, totalRecharged float64) float64 {
|
||
if thresholdType == thresholdTypePercentage && totalRecharged > 0 {
|
||
return totalRecharged * threshold / 100
|
||
}
|
||
return threshold
|
||
}
|
||
|
||
// CheckBalanceAfterDeduction checks if balance crossed below threshold after deduction.
|
||
// Notification is sent only on first crossing: oldBalance >= threshold && newBalance < threshold.
|
||
func (s *BalanceNotifyService) CheckBalanceAfterDeduction(ctx context.Context, user *User, oldBalance, cost float64) {
|
||
if !s.canNotifyBalance(user) {
|
||
return
|
||
}
|
||
effectiveThreshold, rechargeURL, ok := s.resolveUserEffectiveThreshold(ctx, user)
|
||
if !ok {
|
||
return
|
||
}
|
||
newBalance := oldBalance - cost
|
||
if !crossedDownward(oldBalance, newBalance, effectiveThreshold) {
|
||
return
|
||
}
|
||
s.dispatchBalanceLowEmail(ctx, user, newBalance, effectiveThreshold, rechargeURL)
|
||
}
|
||
|
||
// canNotifyBalance checks nil guards and user-level toggle.
|
||
func (s *BalanceNotifyService) canNotifyBalance(user *User) bool {
|
||
if user == nil || s.emailService == nil || s.settingRepo == nil {
|
||
return false
|
||
}
|
||
return user.BalanceNotifyEnabled
|
||
}
|
||
|
||
// resolveUserEffectiveThreshold reads global + user config, returns the effective threshold.
|
||
// Returns ok=false when notifications should be skipped.
|
||
func (s *BalanceNotifyService) resolveUserEffectiveThreshold(ctx context.Context, user *User) (effectiveThreshold float64, rechargeURL string, ok bool) {
|
||
globalEnabled, globalThreshold, rechargeURL := s.getBalanceNotifyConfig(ctx)
|
||
if !globalEnabled {
|
||
return 0, "", false
|
||
}
|
||
threshold := globalThreshold
|
||
if user.BalanceNotifyThreshold != nil {
|
||
threshold = *user.BalanceNotifyThreshold
|
||
}
|
||
if threshold <= 0 {
|
||
return 0, "", false
|
||
}
|
||
effectiveThreshold = resolveBalanceThreshold(threshold, user.BalanceNotifyThresholdType, user.TotalRecharged)
|
||
if effectiveThreshold <= 0 {
|
||
return 0, "", false
|
||
}
|
||
return effectiveThreshold, rechargeURL, true
|
||
}
|
||
|
||
// crossedDownward returns true when oldV was at-or-above threshold but newV dropped below it.
|
||
func crossedDownward(oldV, newV, threshold float64) bool {
|
||
return oldV >= threshold && newV < threshold
|
||
}
|
||
|
||
// dispatchBalanceLowEmail collects recipients and sends the alert in a goroutine.
|
||
func (s *BalanceNotifyService) dispatchBalanceLowEmail(ctx context.Context, user *User, newBalance, threshold float64, rechargeURL string) {
|
||
siteName := s.getSiteName(ctx)
|
||
recipients := s.collectBalanceNotifyRecipients(user)
|
||
slog.Info("CheckBalanceAfterDeduction: sending notification",
|
||
"user_id", user.ID, "recipients", recipients, "new_balance", newBalance, "threshold", threshold)
|
||
go func() {
|
||
defer func() {
|
||
if r := recover(); r != nil {
|
||
slog.Error("panic in balance notification", "recover", r)
|
||
}
|
||
}()
|
||
s.sendBalanceLowEmails(recipients, user.Username, user.Email, newBalance, threshold, siteName, rechargeURL)
|
||
}()
|
||
}
|
||
|
||
// quotaDim describes one quota dimension for notification checking.
|
||
type quotaDim struct {
|
||
name string
|
||
enabled bool
|
||
threshold float64
|
||
thresholdType string // "fixed" (default) or "percentage"
|
||
currentUsed float64
|
||
limit float64
|
||
}
|
||
|
||
// resolvedThreshold converts the user-facing "remaining" threshold into a usage-based trigger point.
|
||
// The threshold represents how much quota REMAINS when the alert fires:
|
||
// - Fixed ($): threshold=400, limit=1000 → fires when usage reaches 600 (remaining drops to 400)
|
||
// - Percentage (%): threshold=30, limit=1000 → fires when usage reaches 700 (remaining drops to 30%)
|
||
func (d quotaDim) resolvedThreshold() float64 {
|
||
if d.limit <= 0 {
|
||
return 0
|
||
}
|
||
if d.thresholdType == thresholdTypePercentage {
|
||
return d.limit * (1 - d.threshold/100)
|
||
}
|
||
return d.limit - d.threshold
|
||
}
|
||
|
||
// buildQuotaDims returns the three quota dimensions for notification checking.
|
||
func buildQuotaDims(account *Account) []quotaDim {
|
||
return []quotaDim{
|
||
{quotaDimDaily, account.GetQuotaNotifyDailyEnabled(), account.GetQuotaNotifyDailyThreshold(), account.GetQuotaNotifyDailyThresholdType(), account.GetQuotaDailyUsed(), account.GetQuotaDailyLimit()},
|
||
{quotaDimWeekly, account.GetQuotaNotifyWeeklyEnabled(), account.GetQuotaNotifyWeeklyThreshold(), account.GetQuotaNotifyWeeklyThresholdType(), account.GetQuotaWeeklyUsed(), account.GetQuotaWeeklyLimit()},
|
||
{quotaDimTotal, account.GetQuotaNotifyTotalEnabled(), account.GetQuotaNotifyTotalThreshold(), account.GetQuotaNotifyTotalThresholdType(), account.GetQuotaUsed(), account.GetQuotaLimit()},
|
||
}
|
||
}
|
||
|
||
// buildQuotaDimsFromState builds quota dimensions using DB transaction state instead of account snapshot.
|
||
// Notification settings (enabled, threshold, thresholdType) come from the account; usage values from quotaState.
|
||
func buildQuotaDimsFromState(account *Account, state *AccountQuotaState) []quotaDim {
|
||
return []quotaDim{
|
||
{quotaDimDaily, account.GetQuotaNotifyDailyEnabled(), account.GetQuotaNotifyDailyThreshold(), account.GetQuotaNotifyDailyThresholdType(), state.DailyUsed, state.DailyLimit},
|
||
{quotaDimWeekly, account.GetQuotaNotifyWeeklyEnabled(), account.GetQuotaNotifyWeeklyThreshold(), account.GetQuotaNotifyWeeklyThresholdType(), state.WeeklyUsed, state.WeeklyLimit},
|
||
{quotaDimTotal, account.GetQuotaNotifyTotalEnabled(), account.GetQuotaNotifyTotalThreshold(), account.GetQuotaNotifyTotalThresholdType(), state.TotalUsed, state.TotalLimit},
|
||
}
|
||
}
|
||
|
||
// CheckAccountQuotaAfterIncrement checks if any quota dimension crossed above its notify threshold.
|
||
// When quotaState is non-nil (from DB transaction RETURNING), it is used directly for threshold
|
||
// checking, avoiding a separate DB read. Otherwise it falls back to fetching fresh account data.
|
||
func (s *BalanceNotifyService) CheckAccountQuotaAfterIncrement(ctx context.Context, account *Account, cost float64, quotaState *AccountQuotaState) {
|
||
if account == nil || s.emailService == nil || s.settingRepo == nil || cost <= 0 {
|
||
return
|
||
}
|
||
if !s.isAccountQuotaNotifyEnabled(ctx) {
|
||
return
|
||
}
|
||
adminEmails := s.getAccountQuotaNotifyEmails(ctx)
|
||
if len(adminEmails) == 0 {
|
||
return
|
||
}
|
||
|
||
siteName := s.getSiteName(ctx)
|
||
var dims []quotaDim
|
||
if quotaState != nil {
|
||
dims = buildQuotaDimsFromState(account, quotaState)
|
||
} else {
|
||
freshAccount := s.fetchFreshAccount(ctx, account)
|
||
dims = buildQuotaDims(freshAccount)
|
||
account = freshAccount // use fresh data for alert metadata
|
||
}
|
||
s.checkQuotaDimCrossings(account, dims, cost, adminEmails, siteName)
|
||
}
|
||
|
||
// fetchFreshAccount loads the latest account from DB; falls back to the snapshot on error.
|
||
func (s *BalanceNotifyService) fetchFreshAccount(ctx context.Context, snapshot *Account) *Account {
|
||
if s.accountRepo == nil {
|
||
return snapshot
|
||
}
|
||
fresh, err := s.accountRepo.GetByID(ctx, snapshot.ID)
|
||
if err != nil {
|
||
slog.Warn("failed to fetch fresh account for quota notify, using snapshot",
|
||
"account_id", snapshot.ID, "error", err)
|
||
return snapshot
|
||
}
|
||
return fresh
|
||
}
|
||
|
||
// checkQuotaDimCrossings iterates pre-built quota dimensions and sends alerts for threshold crossings.
|
||
// Pre-increment value is reconstructed as currentUsed - cost to detect the crossing moment.
|
||
func (s *BalanceNotifyService) checkQuotaDimCrossings(account *Account, dims []quotaDim, cost float64, adminEmails []string, siteName string) {
|
||
for _, dim := range dims {
|
||
if !dim.enabled || dim.threshold <= 0 {
|
||
continue
|
||
}
|
||
effectiveThreshold := dim.resolvedThreshold()
|
||
if effectiveThreshold <= 0 {
|
||
continue
|
||
}
|
||
newUsed := dim.currentUsed
|
||
oldUsed := dim.currentUsed - cost
|
||
if oldUsed < effectiveThreshold && newUsed >= effectiveThreshold {
|
||
s.asyncSendQuotaAlert(adminEmails, account.ID, account.Name, account.Platform, dim, newUsed, effectiveThreshold, siteName)
|
||
}
|
||
}
|
||
}
|
||
|
||
// asyncSendQuotaAlert sends quota alert email in a goroutine with panic recovery.
|
||
func (s *BalanceNotifyService) asyncSendQuotaAlert(adminEmails []string, accountID int64, accountName, platform string, dim quotaDim, newUsed, effectiveThreshold float64, siteName string) {
|
||
go func() {
|
||
defer func() {
|
||
if r := recover(); r != nil {
|
||
slog.Error("panic in quota notification", "recover", r)
|
||
}
|
||
}()
|
||
s.sendQuotaAlertEmails(adminEmails, accountID, accountName, platform, dim, newUsed, siteName)
|
||
}()
|
||
}
|
||
|
||
// getBalanceNotifyConfig reads global balance notification settings.
|
||
func (s *BalanceNotifyService) getBalanceNotifyConfig(ctx context.Context) (enabled bool, threshold float64, rechargeURL string) {
|
||
keys := []string{SettingKeyBalanceLowNotifyEnabled, SettingKeyBalanceLowNotifyThreshold, SettingKeyBalanceLowNotifyRechargeURL}
|
||
settings, err := s.settingRepo.GetMultiple(ctx, keys)
|
||
if err != nil {
|
||
return false, 0, ""
|
||
}
|
||
enabled = settings[SettingKeyBalanceLowNotifyEnabled] == "true"
|
||
if v := settings[SettingKeyBalanceLowNotifyThreshold]; v != "" {
|
||
if f, err := strconv.ParseFloat(v, 64); err == nil {
|
||
threshold = f
|
||
}
|
||
}
|
||
rechargeURL = settings[SettingKeyBalanceLowNotifyRechargeURL]
|
||
return
|
||
}
|
||
|
||
// isAccountQuotaNotifyEnabled checks the global account quota notification toggle.
|
||
func (s *BalanceNotifyService) isAccountQuotaNotifyEnabled(ctx context.Context) bool {
|
||
val, err := s.settingRepo.GetValue(ctx, SettingKeyAccountQuotaNotifyEnabled)
|
||
if err != nil {
|
||
return false
|
||
}
|
||
return val == "true"
|
||
}
|
||
|
||
// getAccountQuotaNotifyEmails reads admin notification emails from settings,
|
||
// filtering out disabled and unverified entries.
|
||
func (s *BalanceNotifyService) getAccountQuotaNotifyEmails(ctx context.Context) []string {
|
||
raw, err := s.settingRepo.GetValue(ctx, SettingKeyAccountQuotaNotifyEmails)
|
||
if err != nil || strings.TrimSpace(raw) == "" || raw == "[]" {
|
||
return nil
|
||
}
|
||
|
||
entries := ParseNotifyEmails(raw)
|
||
if len(entries) == 0 {
|
||
return nil
|
||
}
|
||
|
||
var recipients []string
|
||
seen := make(map[string]bool)
|
||
for _, entry := range entries {
|
||
if entry.Disabled || !entry.Verified {
|
||
continue
|
||
}
|
||
email := strings.TrimSpace(entry.Email)
|
||
if email == "" {
|
||
continue
|
||
}
|
||
lower := strings.ToLower(email)
|
||
if seen[lower] {
|
||
continue
|
||
}
|
||
seen[lower] = true
|
||
recipients = append(recipients, email)
|
||
}
|
||
return recipients
|
||
}
|
||
|
||
// getSiteName reads site name from settings with fallback.
|
||
func (s *BalanceNotifyService) getSiteName(ctx context.Context) string {
|
||
name, err := s.settingRepo.GetValue(ctx, SettingKeySiteName)
|
||
if err != nil || name == "" {
|
||
return defaultSiteName
|
||
}
|
||
return name
|
||
}
|
||
|
||
// collectBalanceNotifyRecipients returns verified, non-disabled email recipients.
|
||
// Only emails with verified=true and disabled=false are included.
|
||
func (s *BalanceNotifyService) collectBalanceNotifyRecipients(user *User) []string {
|
||
var recipients []string
|
||
seen := make(map[string]bool)
|
||
|
||
for _, entry := range user.BalanceNotifyExtraEmails {
|
||
if entry.Disabled || !entry.Verified {
|
||
continue
|
||
}
|
||
email := strings.TrimSpace(entry.Email)
|
||
if email == "" {
|
||
continue
|
||
}
|
||
lower := strings.ToLower(email)
|
||
if seen[lower] {
|
||
continue
|
||
}
|
||
seen[lower] = true
|
||
recipients = append(recipients, email)
|
||
}
|
||
|
||
return recipients
|
||
}
|
||
|
||
// sendEmails sends an email to all recipients with shared timeout and error logging.
|
||
func (s *BalanceNotifyService) sendEmails(recipients []string, subject, body string, logAttrs ...any) {
|
||
if len(recipients) == 0 {
|
||
slog.Warn("sendEmails: no recipients", "subject", subject)
|
||
return
|
||
}
|
||
for _, to := range recipients {
|
||
ctx, cancel := context.WithTimeout(context.Background(), emailSendTimeout)
|
||
if err := s.emailService.SendEmail(ctx, to, subject, body); err != nil {
|
||
attrs := append([]any{"to", to, "error", err}, logAttrs...)
|
||
slog.Error("failed to send notification", attrs...)
|
||
} else {
|
||
slog.Info("notification email sent successfully", "to", to, "subject", subject)
|
||
}
|
||
cancel()
|
||
}
|
||
}
|
||
|
||
// sendBalanceLowEmails sends balance low notification to all recipients.
|
||
func (s *BalanceNotifyService) sendBalanceLowEmails(recipients []string, userName, userEmail string, balance, threshold float64, siteName, rechargeURL string) {
|
||
displayName := userName
|
||
if displayName == "" {
|
||
displayName = userEmail
|
||
}
|
||
subject := fmt.Sprintf("[%s] 余额不足提醒 / Balance Low Alert", sanitizeEmailHeader(siteName))
|
||
body := s.buildBalanceLowEmailBody(html.EscapeString(displayName), balance, threshold, html.EscapeString(siteName), rechargeURL)
|
||
s.sendEmails(recipients, subject, body, "user_email", userEmail, "balance", balance)
|
||
}
|
||
|
||
// sendQuotaAlertEmails sends quota alert notification to admin emails.
|
||
func (s *BalanceNotifyService) sendQuotaAlertEmails(adminEmails []string, accountID int64, accountName, platform string, dim quotaDim, used float64, siteName string) {
|
||
dimLabel := quotaDimLabels[dim.name]
|
||
if dimLabel == "" {
|
||
dimLabel = dim.name
|
||
}
|
||
|
||
// Format the remaining-based threshold for display
|
||
thresholdDisplay := fmt.Sprintf("$%.2f", dim.threshold)
|
||
if dim.thresholdType == thresholdTypePercentage {
|
||
thresholdDisplay = fmt.Sprintf("%.0f%%", dim.threshold)
|
||
}
|
||
remaining := dim.limit - used
|
||
if remaining < 0 {
|
||
remaining = 0
|
||
}
|
||
|
||
subject := fmt.Sprintf("[%s] 账号限额告警 / Account Quota Alert - %s", sanitizeEmailHeader(siteName), sanitizeEmailHeader(accountName))
|
||
body := s.buildQuotaAlertEmailBody(accountID, html.EscapeString(accountName), html.EscapeString(platform), html.EscapeString(dimLabel), used, dim.limit, remaining, thresholdDisplay, html.EscapeString(siteName))
|
||
s.sendEmails(adminEmails, subject, body, "account", accountName, "dimension", dim.name)
|
||
}
|
||
|
||
// sanitizeEmailHeader removes CR/LF characters to prevent SMTP header injection.
|
||
func sanitizeEmailHeader(s string) string {
|
||
return strings.NewReplacer("\r", "", "\n", "").Replace(s)
|
||
}
|
||
|
||
// balanceLowEmailTemplate is the HTML template for balance low notifications.
|
||
// Format args: siteName, userName, userName, balance, threshold, threshold.
|
||
// The recharge button is appended dynamically when rechargeURL is set.
|
||
const balanceLowEmailTemplate = `<!DOCTYPE html>
|
||
<html>
|
||
<head>
|
||
<meta charset="UTF-8">
|
||
<style>
|
||
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background-color: #f5f5f5; margin: 0; padding: 20px; }
|
||
.container { max-width: 600px; margin: 0 auto; background-color: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
|
||
.header { background: linear-gradient(135deg, #f59e0b 0%%, #d97706 100%%); color: white; padding: 30px; text-align: center; }
|
||
.header h1 { margin: 0; font-size: 24px; }
|
||
.content { padding: 40px 30px; text-align: center; }
|
||
.balance { font-size: 36px; font-weight: bold; color: #dc2626; margin: 20px 0; }
|
||
.info { color: #666; font-size: 14px; line-height: 1.6; margin-top: 20px; }
|
||
.recharge-btn { display: inline-block; margin-top: 24px; padding: 12px 32px; background: linear-gradient(135deg, #f59e0b 0%%, #d97706 100%%); color: #fff; text-decoration: none; border-radius: 6px; font-size: 16px; font-weight: bold; }
|
||
.footer { background-color: #f8f9fa; padding: 20px; text-align: center; color: #999; font-size: 12px; }
|
||
</style>
|
||
</head>
|
||
<body>
|
||
<div class="container">
|
||
<div class="header"><h1>%s</h1></div>
|
||
<div class="content">
|
||
<p style="font-size: 18px; color: #333;">%s，您的余额不足</p>
|
||
<p style="color: #666;">Dear %s, your balance is running low</p>
|
||
<div class="balance">$%.2f</div>
|
||
<div class="info">
|
||
<p>您的账户余额已低于提醒阈值 <strong>$%.2f</strong>。</p>
|
||
<p>Your account balance has fallen below the alert threshold of <strong>$%.2f</strong>.</p>
|
||
<p>请及时充值以免服务中断。</p>
|
||
<p>Please top up to avoid service interruption.</p>
|
||
</div>
|
||
%s
|
||
</div>
|
||
<div class="footer"><p>此邮件由系统自动发送，请勿回复。</p></div>
|
||
</div>
|
||
</body>
|
||
</html>`
|
||
|
||
// quotaAlertEmailTemplate is the HTML template for account quota alert notifications.
|
||
// Format args: siteName, accountID, accountName, platform, dimLabel, used, limitStr, remaining, thresholdDisplay.
|
||
const quotaAlertEmailTemplate = `<!DOCTYPE html>
|
||
<html>
|
||
<head>
|
||
<meta charset="UTF-8">
|
||
<style>
|
||
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background-color: #f5f5f5; margin: 0; padding: 20px; }
|
||
.container { max-width: 600px; margin: 0 auto; background-color: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
|
||
.header { background: linear-gradient(135deg, #ef4444 0%%, #dc2626 100%%); color: white; padding: 30px; text-align: center; }
|
||
.header h1 { margin: 0; font-size: 24px; }
|
||
.content { padding: 40px 30px; }
|
||
.metric { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid #eee; }
|
||
.metric-label { color: #666; }
|
||
.metric-value { font-weight: bold; color: #333; }
|
||
.info { color: #666; font-size: 14px; line-height: 1.6; margin-top: 20px; text-align: center; }
|
||
.footer { background-color: #f8f9fa; padding: 20px; text-align: center; color: #999; font-size: 12px; }
|
||
</style>
|
||
</head>
|
||
<body>
|
||
<div class="container">
|
||
<div class="header"><h1>%s</h1></div>
|
||
<div class="content">
|
||
<p style="font-size: 18px; color: #333; text-align: center;">账号限额告警 / Account Quota Alert</p>
|
||
<div class="metric"><span class="metric-label">账号 ID / Account ID</span><span class="metric-value">#%d</span></div>
|
||
<div class="metric"><span class="metric-label">账号 / Account</span><span class="metric-value">%s</span></div>
|
||
<div class="metric"><span class="metric-label">平台 / Platform</span><span class="metric-value">%s</span></div>
|
||
<div class="metric"><span class="metric-label">维度 / Dimension</span><span class="metric-value">%s</span></div>
|
||
<div class="metric"><span class="metric-label">已使用 / Used</span><span class="metric-value">$%.2f</span></div>
|
||
<div class="metric"><span class="metric-label">限额 / Limit</span><span class="metric-value">%s</span></div>
|
||
<div class="metric"><span class="metric-label">剩余额度 / Remaining</span><span class="metric-value">$%.2f</span></div>
|
||
<div class="metric"><span class="metric-label">提醒阈值 / Alert Threshold</span><span class="metric-value">%s</span></div>
|
||
<div class="info">
|
||
<p>账号剩余额度已低于提醒阈值，请及时关注。</p>
|
||
<p>Account remaining quota has fallen below the alert threshold.</p>
|
||
</div>
|
||
</div>
|
||
<div class="footer"><p>此邮件由系统自动发送，请勿回复。</p></div>
|
||
</div>
|
||
</body>
|
||
</html>`
|
||
|
||
// buildBalanceLowEmailBody builds HTML email for balance low notification.
|
||
func (s *BalanceNotifyService) buildBalanceLowEmailBody(userName string, balance, threshold float64, siteName, rechargeURL string) string {
|
||
rechargeBlock := ""
|
||
if rechargeURL != "" {
|
||
rechargeBlock = fmt.Sprintf(`<a href="%s" class="recharge-btn">立即充值 / Top Up Now</a>`, html.EscapeString(rechargeURL))
|
||
}
|
||
return fmt.Sprintf(balanceLowEmailTemplate, siteName, userName, userName, balance, threshold, threshold, rechargeBlock)
|
||
}
|
||
|
||
// buildQuotaAlertEmailBody builds HTML email for account quota alert.
|
||
func (s *BalanceNotifyService) buildQuotaAlertEmailBody(accountID int64, accountName, platform, dimLabel string, used, limit, remaining float64, thresholdDisplay, siteName string) string {
|
||
limitStr := fmt.Sprintf("$%.2f", limit)
|
||
if limit <= 0 {
|
||
limitStr = "无限制 / Unlimited"
|
||
}
|
||
return fmt.Sprintf(quotaAlertEmailTemplate, siteName, accountID, accountName, platform, dimLabel, used, limitStr, remaining, thresholdDisplay)
|
||
}
|
||
|