package taskrun_test

import (
	"testing"

	"chat-agent-system/internal/stream"
	"chat-agent-system/internal/taskrun"
)

func TestFoldPhaseEvents_MirrorsFrontendSemantics(t *testing.T) {
	events := []taskrun.StoredEvent{
		{Seq: 1, Event: stream.StreamEvent{Type: stream.EventPhase, Phase: &stream.PhasePayload{PhaseID: "squad_assembly", Message: "组建小队"}}},
		{Seq: 2, Event: stream.StreamEvent{Type: stream.EventPhase, Phase: &stream.PhasePayload{PhaseID: "step_executing", Message: "撰写中", StepIndex: 1, TotalSteps: 2}}},
		{Seq: 3, Event: stream.StreamEvent{Type: stream.EventPhase, Phase: &stream.PhasePayload{PhaseID: "step_completed", Message: "完成"}}},
		{Seq: 4, Event: stream.StreamEvent{Type: stream.EventStatus, Status: &stream.StatusPayload{Message: "ignore"}}},
	}
	steps, label := taskrun.FoldPhaseEvents(events)
	if len(steps) != 2 {
		t.Fatalf("steps=%d want 2: %+v", len(steps), steps)
	}
	if steps[0].Status != "completed" || steps[1].Status != "completed" {
		t.Fatalf("expected both completed, got %+v", steps)
	}
	if label != "完成" {
		t.Fatalf("label=%q", label)
	}
	if steps[1].Detail != "撰写中" {
		t.Fatalf("detail=%q", steps[1].Detail)
	}
	// 收口后的 label 必须归一化为静态措辞：进度中叙述被短标签替换，步数结构后缀保留。
	if steps[0].Label != "组建小队已完成" {
		t.Fatalf("steps[0].label=%q want 组建小队已完成", steps[0].Label)
	}
	if steps[1].Label != "专员执行（第 1/2 步）已完成" {
		t.Fatalf("steps[1].label=%q want 专员执行（第 1/2 步）已完成", steps[1].Label)
	}
}

func TestBuildPhaseSnapshot_SettlesRunningOnTerminal(t *testing.T) {
	events := []taskrun.StoredEvent{
		{Seq: 1, Event: stream.StreamEvent{Type: stream.EventPhase, Phase: &stream.PhasePayload{PhaseID: "quality_gate", Message: "门禁中", Progress: 90}}},
	}
	snap := taskrun.BuildPhaseSnapshot(events, 12_000, taskrun.StatusCompleted, "用户初始需求收集表")
	if snap == nil {
		t.Fatal("nil snapshot")
	}
	if snap.DurationMs != 12_000 || snap.Title != "用户初始需求收集表" {
		t.Fatalf("meta %+v", snap)
	}
	if len(snap.Steps) != 1 || snap.Steps[0].Status != "completed" {
		t.Fatalf("steps %+v", snap.Steps)
	}
	// 终态收口后 label 不得冻结为"门禁中（90%）"。
	if snap.Steps[0].Label != "质量门禁已完成" {
		t.Fatalf("label=%q want 质量门禁已完成", snap.Steps[0].Label)
	}
}

func TestBuildPhaseSnapshot_FailedMarksRunningFailed(t *testing.T) {
	events := []taskrun.StoredEvent{
		{Seq: 1, Event: stream.StreamEvent{Type: stream.EventPhase, Phase: &stream.PhasePayload{PhaseID: "step_executing", Message: "执行中"}}},
	}
	snap := taskrun.BuildPhaseSnapshot(events, 0, taskrun.StatusFailed, "")
	if snap.Steps[0].Status != "failed" {
		t.Fatalf("status=%s", snap.Steps[0].Status)
	}
	// 失败步骤有意保留原步骤文案（错误细节由错误气泡承载），不做归一化。
	if snap.Steps[0].Label != "执行中" {
		t.Fatalf("label=%q want 执行中", snap.Steps[0].Label)
	}
}

// TestBuildPhaseSnapshot_AdvisorBriefingFrozenLabel 复现消息 #4424：
// advisor_briefing 以 running + "正在…（98%）" 落盘后被终态收口，
// label 必须归一化，任务不得展示"已完成却像还在跑"的冻结文案。
func TestBuildPhaseSnapshot_AdvisorBriefingFrozenLabel(t *testing.T) {
	events := []taskrun.StoredEvent{
		{Seq: 1, Event: stream.StreamEvent{Type: stream.EventPhase, Phase: &stream.PhasePayload{PhaseID: "squad_assembly", Message: "正在组建并启动【用户初始需求收集表】智能体小队（后端: pi-agent）...", Progress: 5}}},
		{Seq: 2, Event: stream.StreamEvent{Type: stream.EventPhase, Phase: &stream.PhasePayload{PhaseID: "step_executing", Message: "审核主管正在进行：审核并定稿交付..."}}},
		{Seq: 3, Event: stream.StreamEvent{Type: stream.EventPhase, Phase: &stream.PhasePayload{PhaseID: "quality_gate", Message: "质量门禁审核通过（评分: 100.0 / 100）", Progress: 95}}},
		{Seq: 4, Event: stream.StreamEvent{Type: stream.EventPhase, Phase: &stream.PhasePayload{PhaseID: "advisor_briefing", Message: "贴身业务参谋正在提炼关键决策摘要与风险雷达...", Progress: 98}}},
	}
	snap := taskrun.BuildPhaseSnapshot(events, 244_864, taskrun.StatusPendingAuthorConfirmation, "用户初始需求收集表")
	if snap == nil {
		t.Fatal("nil snapshot")
	}
	if len(snap.Steps) != 4 {
		t.Fatalf("steps=%d want 4", len(snap.Steps))
	}
	want := []string{"组建小队已完成", "专员执行已完成", "质量门禁已完成", "参谋简报已完成"}
	for i, st := range snap.Steps {
		if st.Status != "completed" {
			t.Fatalf("steps[%d].status=%s want completed", i, st.Status)
		}
		if st.Label != want[i] {
			t.Fatalf("steps[%d].label=%q want %q", i, st.Label, want[i])
		}
	}
	// Detail 保留原始叙述（当前 UI 不展示，供审计）。
	if snap.Steps[3].Detail != "贴身业务参谋正在提炼关键决策摘要与风险雷达..." {
		t.Fatalf("steps[3].detail=%q", snap.Steps[3].Detail)
	}
}

// TestNormalizeSettledStep_Idempotent 保证回填脚本可安全重复执行。
func TestNormalizeSettledStep_Idempotent(t *testing.T) {
	step := taskrun.PhaseStepSnapshot{Step: "advisor_briefing#2", Status: "completed", Label: "贴身业务参谋正在提炼关键决策摘要与风险雷达...（98%）"}
	once := taskrun.NormalizeSettledStep(step)
	if once.Label != "参谋简报已完成" {
		t.Fatalf("label=%q", once.Label)
	}
	twice := taskrun.NormalizeSettledStep(once)
	if twice != once {
		t.Fatalf("not idempotent: %+v vs %+v", once, twice)
	}
	// running / pending 不改动。
	run := taskrun.PhaseStepSnapshot{Step: "quality_gate", Status: "running", Label: "门禁中（90%）"}
	if got := taskrun.NormalizeSettledStep(run); got != run {
		t.Fatalf("running step mutated: %+v", got)
	}
}