feat(tenant): bill AI points by output characters
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Previously AI point cost was computed from request (input) characters at
reservation time. Switch to reserving a single point up front and
settling the final cost from the generated output length on completion.

- Reserve 1 point (or FixedPoints) instead of pricing on request chars
- On completion, recompute points from output chars vs base chars,
  update the reservation amounts, and post a ledger delta for the
  top-up/refund; invalidate the workspace quota summary cache
- MarkCompleted now persists final request_chars/base_chars/points
- Use ceil division in calculateAIPointCost so an exact base boundary
  charges one point instead of rolling over
- Thread output text through all CompleteAIPoints callers (article
  selection, KOL assist, question expansion, template assist, compliance
  judge) and return the settled reservation
- Add unit tests plus an integration test gated on TEST_DATABASE_URL
- Update the user manual: billing is by output characters

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-07-09 17:04:37 +08:00
parent c8dceb43d7
commit f69edc2218
12 changed files with 612 additions and 51 deletions
@@ -430,7 +430,7 @@ func (s *TemplateService) IsAssistTaskTerminal(ctx context.Context, job AssistJo
}
switch record.Status {
case "completed":
s.completeTemplateAssistAIPoints(ctx, job.TenantID, job.TaskID, "")
s.completeTemplateAssistAIPoints(ctx, job.TenantID, job.TaskID, "", string(record.ResultJSON))
return true, nil
case "failed":
if isTemplateAssistAIPointTask(job.TaskType) {
@@ -479,7 +479,7 @@ func (s *TemplateService) executeAnalyzeTask(ctx context.Context, repo repositor
s.failAssist(ctx, job.TaskID, job.TaskType, job.TenantID, err)
return
}
s.completeTemplateAssistAIPoints(ctx, job.TenantID, job.TaskID, result.Model)
s.completeTemplateAssistAIPoints(ctx, job.TenantID, job.TaskID, result.Model, result.Content)
}
func (s *TemplateService) executeTitleTask(ctx context.Context, repo repository.TemplateAssistTaskRepository, job assistJob) {
@@ -518,7 +518,7 @@ func (s *TemplateService) executeTitleTask(ctx context.Context, repo repository.
s.failAssist(ctx, job.TaskID, job.TaskType, job.TenantID, err)
return
}
s.completeTemplateAssistAIPoints(ctx, job.TenantID, job.TaskID, result.Model)
s.completeTemplateAssistAIPoints(ctx, job.TenantID, job.TaskID, result.Model, result.Content)
}
func (s *TemplateService) executeOutlineTask(ctx context.Context, repo repository.TemplateAssistTaskRepository, job assistJob) {
@@ -562,7 +562,7 @@ func (s *TemplateService) executeOutlineTask(ctx context.Context, repo repositor
s.failAssist(ctx, job.TaskID, job.TaskType, job.TenantID, err)
return
}
s.completeTemplateAssistAIPoints(ctx, job.TenantID, job.TaskID, result.Model)
s.completeTemplateAssistAIPoints(ctx, job.TenantID, job.TaskID, result.Model, result.Content)
}
func (s *TemplateService) failAssist(ctx context.Context, taskID, taskType string, tenantID int64, err error) {
@@ -619,10 +619,10 @@ func (s *TemplateService) refundReservedAIPoints(ctx context.Context, tenantID,
_ = RefundAIPoints(ctx, s.pool, s.cache, tenantID, operatorID, *reservation, errorMessage)
}
func (s *TemplateService) completeTemplateAssistAIPoints(ctx context.Context, tenantID int64, taskID string, model string) {
func (s *TemplateService) completeTemplateAssistAIPoints(ctx context.Context, tenantID int64, taskID string, model string, meteredOutputText string) {
resourceType := "template_assist_task"
resourceUID := taskID
_ = CompletePendingAIPointsByResource(ctx, s.pool, tenantID, resourceType, nil, &resourceUID, model)
_, _ = CompletePendingAIPointsByResource(ctx, s.pool, s.cache, tenantID, resourceType, nil, &resourceUID, model, meteredOutputText)
}
func isTemplateAssistAIPointTask(taskType string) bool {