Files
larksuite__cli/cmd/event/render/decision.go

103 lines
3.4 KiB
Go

// Copyright (c) 2026 Lark Technologies Pte. Ltd.
// SPDX-License-Identifier: MIT
// Package render turns consume decisions into user-facing output. It is the
// only place a decision becomes JSON; the application layer never formats
// anything itself.
package render
import (
"io"
"regexp"
appconsume "github.com/larksuite/cli/internal/event/application/consume"
"github.com/larksuite/cli/internal/output"
)
// sensitiveParamName matches parameter names whose values must never be
// echoed back in a rendered decision. Names are matched, not values: a
// credential-bearing parameter is identifiable by its declaration, and
// guessing at value shapes would miss more than it catches.
var sensitiveParamName = regexp.MustCompile(`(?i)(token|secret|password|credential|cookie)`)
func redactParams(params map[string]string) map[string]string {
out := make(map[string]string, len(params))
for name, value := range params {
if sensitiveParamName.MatchString(name) {
out[name] = "[redacted]"
continue
}
out[name] = value
}
return out
}
// decisionPayload is the JSON shape under data.decision — snake_case, stable,
// documented in the event skill. Field additions must be additive.
type decisionPayload struct {
EventKey string `json:"event_key"`
Domain string `json:"domain"`
Identity string `json:"identity"`
Status string `json:"status"`
Params map[string]string `json:"params"`
Scope string `json:"scope"`
Preconditions []preconditionView `json:"preconditions"`
Preparation *preparationView `json:"preparation,omitempty"`
WouldRead []string `json:"would_read"`
WouldWrite []string `json:"would_write"`
}
type preconditionView struct {
Name string `json:"name"`
Status string `json:"status"`
Detail string `json:"detail,omitempty"`
// The machine-readable half of a failure, mirroring the error envelope a
// real run would emit: callers branch on subtype and act on hint instead of
// matching prose. Omitted when the check did not fail.
Subtype string `json:"subtype,omitempty"`
Hint string `json:"hint,omitempty"`
MissingScopes []string `json:"missing_scopes,omitempty"`
}
type preparationView struct {
Strategy string `json:"strategy"`
Condition string `json:"condition"`
Action string `json:"action"`
}
// WriteDecisionJSON emits the decision inside the standard success envelope
// with the envelope's own top-level dry_run marker set.
func WriteDecisionJSON(out, errOut io.Writer, identity string, v appconsume.DecisionView) error {
return output.WriteSuccessEnvelope(map[string]any{
"decision": toPayload(v),
}, output.SuccessEnvelopeOptions{
CommandPath: "event consume",
Identity: identity,
DryRun: true,
Out: out,
ErrOut: errOut,
})
}
func toPayload(v appconsume.DecisionView) decisionPayload {
p := decisionPayload{
EventKey: v.EventKey,
Domain: v.Domain,
Identity: v.Identity,
Status: v.Status,
Params: redactParams(v.Params),
Scope: v.Scope,
WouldRead: v.WouldRead,
WouldWrite: v.WouldWrite,
}
p.Preconditions = make([]preconditionView, 0, len(v.Preconditions))
for _, pc := range v.Preconditions {
p.Preconditions = append(p.Preconditions, preconditionView(pc))
}
if v.Preparation != nil {
pv := preparationView(*v.Preparation)
p.Preparation = &pv
}
return p
}