package runtime

import (
	"context"
	"strings"
	"testing"

	core "agent-system-core"
)

// 问题一回归（run_b520bf2e3037）：事实核查修正轮触发时，现场那段正式总结必须
// 降级进过程时间线；修正轮的收尾才是最终答复——否则前端按「最后一个过程部件」
// 切分后，用户只看到修正流水账，看不到原总结。
func TestFactCheckDemotesPriorSummary(t *testing.T) {
	rc := &fakeRunCtx{
		ctx:                 context.Background(),
		prof:                core.AgentProfile{Model: core.ModelRoute{Chat: "test-model", Lightweight: "lite-model"}},
		verify:              true,
		execArtifact:        &core.Artifact{ID: "art_0123456789ab", Name: "报告.md"},
		execArtifactContent: []byte("# 报告\n\n准确率 95%。"),
	}
	turns := padTurns(
		textDeltaTurn("", toolCall("make_report", `{"content":"准确率 95%"}`)),
		textDeltaTurn("已完成。## 产出物\n\n结构完整的用户总结。"),
		textDeltaTurn("已修正并重新登记。"),
	)
	r := &LLMRunner{Stream: scriptStream(turns, nil), VerifyStream: passedStream()}
	if err := r.Execute(rc); err != nil {
		t.Fatalf("Execute: %v", err)
	}
	var summary *core.Part
	visible := []string{}
	sawFactCheck := false
	for i := range rc.assistant {
		p := rc.assistant[i]
		if p.Type == core.PartText && strings.Contains(p.Text, "结构完整的用户总结") {
			summary = &rc.assistant[i]
		}
		if p.Type == core.PartText && !p.Process {
			visible = append(visible, p.Text)
		}
		if p.Check != nil && !p.Check.Passed && strings.Contains(p.Check.Reason, "事实核查") {
			sawFactCheck = true
		}
	}
	if summary == nil {
		t.Fatal("prior summary text missing")
	}
	if !summary.Process {
		t.Fatalf("prior summary not demoted to process: %+v", *summary)
	}
	if !sawFactCheck {
		t.Fatal("fact check note missing")
	}
	if len(visible) != 1 || visible[0] != "已修正并重新登记。" {
		t.Fatalf("visible final texts = %v, want only the continuation closing", visible)
	}
}

// 同源跳过提示不再作为用户可见正文追加（原先经 StopDecision.Notice 顶掉正式总结），
// 改记为通过态检查行留在过程时间线。
func TestVerifierSkipIsCheckNotFinalText(t *testing.T) {
	rc := &fakeRunCtx{
		ctx:    context.Background(),
		prof:   core.AgentProfile{Model: core.ModelRoute{Chat: "test-model"}}, // 轻量回落=主模型 → 同源跳过
		verify: true,
	}
	turns := padTurns(textDeltaTurn("总结完成。"))
	r := &LLMRunner{Stream: scriptStream(turns, nil)} // 无 VerifyStream
	if err := r.Execute(rc); err != nil {
		t.Fatalf("Execute: %v", err)
	}
	skipCheck, noticeText := false, false
	visible := []string{}
	for _, p := range rc.assistant {
		if p.Check != nil && p.Check.Passed && strings.Contains(p.Check.Reason, "同源模型验证") {
			skipCheck = true
		}
		if p.Type == core.PartText {
			if strings.Contains(p.Text, verifierUnavailableNotice) {
				noticeText = true
			}
			if !p.Process {
				visible = append(visible, p.Text)
			}
		}
	}
	if !skipCheck {
		t.Fatal("same-source skip not recorded as a passing check")
	}
	if noticeText {
		t.Fatal("skip notice leaked into message text parts")
	}
	if len(visible) != 1 || visible[0] != "总结完成。" {
		t.Fatalf("visible final texts = %v", visible)
	}
}