package runtime

import (
	"context"
	"strings"
	"testing"

	core "git-ssh.u1680832.nyat.app/weichen/Agent-System-Core.git"
)

// P4：计划提醒常开——没有任何计划/待办而任务变长时，给一次可忽略的轻提醒；
// 已有计划但停滞的旧提醒行为不变。
func TestPlanlessNudgeFiresOnce(t *testing.T) {
	rc := &fakeRunCtx{
		ctx:  context.Background(),
		prof: core.AgentProfile{Model: core.ModelRoute{Chat: "test-model"}},
	}
	quiet := textDeltaTurn("", toolCall("make_report", "{}"))
	turns := [][]interface{}{}
	_ = turns
	st := &directRun{l: &LLMRunner{}, rc: rc, eff: core.EffectiveSettings{}}
	var seen []string
	emitReminder := func(turn int) []string {
		// 模拟连续工具轮推进。
		st.closedToolTurn = true
		st.toolTurnsSince++
		return st.reminders(turn)
	}
	for i := 0; i < 3; i++ {
		seen = append(seen, emitReminder(i)...)
	}
	if len(seen) != 1 || !strings.Contains(seen[0], "update_plan") {
		t.Fatalf("planless nudge should fire exactly once, got %v", seen)
	}
	for i := 0; i < 6; i++ {
		seen = append(seen, emitReminder(i)...)
	}
	if len(seen) != 1 {
		t.Fatalf("planless nudge must not repeat, got %v", seen)
	}
	_ = quiet
}