package main

import (
	"context"
	"time"
)

// autoApprove is the measurement-mode stand-in for the Discord approver (run option auto_approve_after_s, 2026-10-15):
// after the configured delay the harness approves the layer-2 proposal (actor "auto") and executes it exactly as the
// HITL bot does after a button press (actor "ai-approved", MarkProposalExecuted). MTTA therefore equals the delay;
// the verdict logic is unchanged (layer 2 from the ai-approved action). A proposal already decided, expired or
// recorded-only is handled the same way as the API path. The claim (approve + executed_at) is a single conditional
// UPDATE, so a human approval/execution or a rejection that arrives first takes precedence (no double execution).
func (a *App) autoApprove(token string, req ProposalRequest, after time.Duration) {
	time.Sleep(after)
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
	defer cancel()
	p, err := a.store.GetProposal(ctx, token)
	if err != nil {
		return
	}
	// one conditional update claims approval + execution: a human/bot decision (approve, reject, execute) that lands
	// first wins and this goroutine does nothing
	claimed, err := a.store.ClaimProposal(ctx, token, "auto")
	if err != nil || !claimed {
		return
	}
	suffix := token[len(token)-6:]
	a.store.Event(ctx, p.RunID, p.ScenarioID, "approval", "auto", map[string]any{"action_id": p.ActionID, "token_suffix": suffix, "auto_approve_after_s": after.Seconds()})
	ce := catalogEntry(p.ActionID)
	if ce == nil {
		return
	}
	note := "auto-approved by the harness (measurement mode)"
	if !ce.Exec {
		a.store.Event(ctx, p.RunID, p.ScenarioID, "action", "ai-approved", map[string]any{"action_id": p.ActionID, "target": req.Target, "recorded_only": true, "note": note, "layer": ce.Layer})
		mActs.WithLabelValues(p.ActionID, "ai-approved", "recorded").Inc()
		return
	}
	res, err := a.executeAction(ctx, p.ActionID, req.Target, "ai-approved", p.RunID, p.ScenarioID)
	result := "ok"
	if err != nil {
		result = "error"
	}
	mActs.WithLabelValues(p.ActionID, "ai-approved", result).Inc()
	a.store.Event(ctx, p.RunID, p.ScenarioID, "action", "ai-approved", map[string]any{"action_id": p.ActionID, "target": req.Target, "result": res, "error": errStr(err), "note": note})
}