package backthink

import (
	"context"
	"strings"
	"testing"
	"time"

	"git.yeij.top/AskaEth/Cyrene_v2/internal/runtime/history"
	"git.yeij.top/AskaEth/Cyrene_v2/internal/urgency"
)

// 本文件守住 design/12 §N C 的**判定侧**（切片 C1-1）：自我唤醒是追加的第三个
// TriggerKind，它的档位折算与总线事件共用同一条通道（foldDeclared → escalateImport），
// 判定侧只多认一个 kind、不加第二条档位通道。对应 C.8 判据 1 / 4 / 6 / 9。
//
// ⚠️ 本片**不产生**自排轮：WakeNow / worker / 工具面分别属 C1-2 / C1-3，因此这里的
// 「生产路径」用例直接构造 selfWakeTrigger —— 它证明的是链路已就绪，不是能力已交付。

// TestTriggerKind_SelfWakeAppendedWithStableLabels 钉住标签与编号口径（C.6 落地清单）：
// 落库值（Record.Trigger）、面板值与审计前缀共用同一个真源；新 kind 是**追加**的，
// 既有两个值的编号与标签逐字不变（改编号会静默改写已落库记录的含义）。
func TestTriggerKind_SelfWakeAppendedWithStableLabels(t *testing.T) {
	t.Parallel()
	cases := []struct {
		kind TriggerKind
		want string
	}{
		{TriggerHeartbeat, "heartbeat"},
		{TriggerEvent, "event"},
		{TriggerSelfWake, SelfWakeSource},
	}
	for _, tc := range cases {
		if got := tc.kind.String(); got != tc.want {
			t.Fatalf("TriggerKind(%d).String() = %q, want %q", int(tc.kind), got, tc.want)
		}
	}
	if !(TriggerHeartbeat < TriggerEvent && TriggerEvent < TriggerSelfWake) {
		t.Fatalf("kind 编号不再是追加的：heartbeat=%d event=%d self_wake=%d",
			int(TriggerHeartbeat), int(TriggerEvent), int(TriggerSelfWake))
	}
	if SelfWakeSource != "self_wake" {
		t.Fatalf("SelfWakeSource = %q, want %q（面板与文档按此值登记）", SelfWakeSource, "self_wake")
	}
	if SelfWakeSummaryPrefix != SelfWakeSource+": " {
		t.Fatalf("SelfWakeSummaryPrefix = %q, want %q", SelfWakeSummaryPrefix, SelfWakeSource+": ")
	}
}

// TestSelfWakeTrigger_ShapeAndUndeclaredDefault 钉住自排轮的形状（C.1/C.2）：来源与
// 摘要用稳定标签、主题级默认是 Normal（不是 Low —— 不新造一档「比例行还低」的语义）、
// Kind 是 TriggerSelfWake；零值声明不上抬。
func TestSelfWakeTrigger_ShapeAndUndeclaredDefault(t *testing.T) {
	t.Parallel()
	tr := selfWakeTrigger(SelfWakeRequest{Reason: "想看看她今天的安排"})
	if tr.Source != SelfWakeSource {
		t.Fatalf("Source = %q, want %q", tr.Source, SelfWakeSource)
	}
	if tr.Kind != TriggerSelfWake {
		t.Fatalf("Kind = %v, want %v", tr.Kind, TriggerSelfWake)
	}
	if tr.Import != ImportanceNormal {
		t.Fatalf("Import = %v, want %v（未声明档位时不上抬）", tr.Import, ImportanceNormal)
	}
	if tr.Summary != SelfWakeSummaryPrefix+"想看看她今天的安排" {
		t.Fatalf("Summary = %q, want the stable prefix + 她写的理由", tr.Summary)
	}
	// 理由为空也要带前缀：context.go 靠前缀认轮次，不靠理由内容。
	if empty := selfWakeTrigger(SelfWakeRequest{}); !strings.HasPrefix(empty.Summary, SelfWakeSummaryPrefix) {
		t.Fatalf("empty-reason Summary = %q, want the stable prefix", empty.Summary)
	}
}

// TestSelfWakeRequest_DeclarerChannel 钉住自排**没有**第二条档位通道：她的声明经
// urgency.Declarer 被 foldDeclared 读出（与 IoT 设备跃迁同一个接口），因此
// SelfWakeRequest 必须满足该接口。
func TestSelfWakeRequest_DeclarerChannel(t *testing.T) {
	t.Parallel()
	var d urgency.Declarer = SelfWakeRequest{Reason: "r", Declared: urgency.LevelWarning}
	if got := d.Urgency(); got != urgency.LevelWarning {
		t.Fatalf("Urgency() = %v, want %v", got, urgency.LevelWarning)
	}
	if got := (SelfWakeRequest{}).Urgency(); got != urgency.LevelRoutine {
		t.Fatalf("zero-value Urgency() = %v, want %v（未声明 = routine）", got, urgency.LevelRoutine)
	}
}

// TestBackthink_SelfWakeRoundProductionPath 走生产路径 think()：一轮自排思考落库为
// trigger="self_wake"，长期静默段里例常自排被扣下（C.4），而声明 warning 后放行且
// 落库档位是**折算后**的 warning（C.6）。对应 C.8 判据 6 / 9。
//
// 变异：把 backthink.go 的 `Kind: tr.Kind` 改回传入常量（如 TriggerHeartbeat）⇒ 第一段
// 的「例常自排被扣下」变红；把 SelfWakeSource 改回心跳值 ⇒ 落库断言变红。
func TestBackthink_SelfWakeRoundProductionPath(t *testing.T) {
	t.Parallel()
	pusher := &mockPusher{result: PushResult{Pushed: true, Route: RouteActiveClient}}
	b, _ := newBackthink(t, Config{}, Deps{
		Thinker: &mockThinker{text: "[我决定:push]\n我想再看看她今天的安排"},
		State:   &mockState{state: UserState{}},
		Pusher:  pusher,
		Recent: &fakeRecent{msgs: []history.Message{{
			Role:      history.RoleUser,
			Content:   "我先去忙了",
			CreatedAt: dayAt().Add(-3 * time.Hour).UnixMilli(),
		}}},
		Now: func() time.Time { return dayAt() },
	})

	b.think(context.Background(), selfWakeTrigger(SelfWakeRequest{Reason: "复盘一下今天的对话"}))

	if got := pusher.count(); got != 0 {
		t.Fatalf("pusher calls = %d, want 0（长期静默段里例常自排被扣下）", got)
	}
	recs, err := b.List(context.Background(), 10)
	if err != nil {
		t.Fatalf("List: %v", err)
	}
	if len(recs) != 1 {
		t.Fatalf("records = %+v, want exactly one self-wake record", recs)
	}
	if recs[0].Trigger != SelfWakeSource {
		t.Fatalf("Record.Trigger = %q, want %q", recs[0].Trigger, SelfWakeSource)
	}
	if recs[0].ShouldPush {
		t.Fatalf("record = %+v, want the routine self wake held", recs[0])
	}
	if !strings.Contains(recs[0].PushResult.Detail, "self-initiated wake") {
		t.Fatalf("PushResult.Detail = %q, want it to name the self-initiated wake hold", recs[0].PushResult.Detail)
	}

	// 同一轮只换声明：warning ⇒ 折算 High ⇒ 长期静默段放行，且落库档位是折算后的值。
	b.think(context.Background(), selfWakeTrigger(SelfWakeRequest{
		Reason: "她可能正需要人陪", Declared: urgency.LevelWarning,
	}))

	recs, err = b.List(context.Background(), 10)
	if err != nil {
		t.Fatalf("List: %v", err)
	}
	if !recs[0].ShouldPush || !recs[0].PushResult.Pushed {
		t.Fatalf("declared self wake = %+v, want a delivered push", recs[0])
	}
	if recs[0].Urgency != urgency.LevelWarning.String() {
		t.Fatalf("Record.Urgency = %q, want %q（落库的是该轮实际生效的档位）", recs[0].Urgency, urgency.LevelWarning.String())
	}
	if got := pusher.count(); got != 1 {
		t.Fatalf("pusher calls = %d, want 1", got)
	}
}