package rond

import "testing"

func TestBuildMergePlanPicks(t *testing.T) {
	vd := VisitDiff{
		Added:   []Visit{{SrcPK: 900, Arrival: tp("2026-09-09 10:00")}},
		Removed: []StoredVisit{{SrcPK: 5, UUID: uuidA}},
		Changed: []VisitConflict{
			{Backup: Visit{SrcPK: 901, Arrival: tp("2026-09-01 12:00")}, DB: StoredVisit{SrcPK: 1, UUID: uuidA}},
			{Backup: Visit{SrcPK: 902, Arrival: tp("2026-09-02 12:00")}, DB: StoredVisit{SrcPK: 2, UUID: uuidB}},
		},
	}
	pd := PlaceDiff{Added: []Location{{SrcPK: 3, Name: "新地点"}}}
	ad := ActivityDiff{Added: []Activity{{SrcPK: 8, Name: "散步"}}}

	p := BuildMergePlan(vd, pd, ad, Choices{
		AddVisits:  true,
		AddPlaces:  true,
		AddActs:    false,
		VisitClash: map[string]string{uuidA: PickBackup, uuidB: PickDB},
	})
	if len(p.AddVisits) != 1 || p.AddVisits[0].SrcPK != 900 {
		t.Fatalf("新增到访应合入一条: %+v", p.AddVisits)
	}
	if len(p.UpdVisits) != 1 || p.UpdVisits[0].UUID != uuidA {
		t.Fatalf("只有选了「用实机」的那条才该更新: %+v", p.UpdVisits)
	}
	if len(p.AddPlaces) != 1 {
		t.Fatalf("勾了「并进来」就该带上新增地点: %d", len(p.AddPlaces))
	}
	// 即使没单独勾活动，合入到访时也要把它可能挂着的「库里还没有的活动」带上，
	// 否则那条到访的 activity_id 无从映射，只能整条丢掉。
	if len(p.AddActs) != 1 || p.AddActs[0].Name != "散步" {
		t.Fatalf("合入到访应连带它需要的活动: %+v", p.AddActs)
	}
	// 「仅站内有」永远不进计划：删除是单独的事，绝不顺手做
	if len(p.UpdPlaces)+len(p.UpdActs) != 0 {
		t.Fatal("不该有地点/活动更新")
	}
}

// 没提交的键、或提交了怪值，一律当成「保留站内」——不误伤。
func TestBuildMergePlanDefaultsToKeepDB(t *testing.T) {
	vd := VisitDiff{Changed: []VisitConflict{
		{Backup: Visit{SrcPK: 901}, DB: StoredVisit{SrcPK: 1, UUID: uuidA}},
	}}
	p := BuildMergePlan(vd, PlaceDiff{}, ActivityDiff{}, Choices{VisitClash: map[string]string{uuidA: "wat"}})
	if len(p.UpdVisits) != 0 {
		t.Fatalf("怪值不该被当成「用实机」: %+v", p.UpdVisits)
	}
	if !p.Empty() {
		t.Fatal("什么都没选，计划应当是空的")
	}
}

// 冲突选了「跳过」也不动。
func TestBuildMergePlanSkip(t *testing.T) {
	vd := VisitDiff{Changed: []VisitConflict{
		{Backup: Visit{SrcPK: 901}, DB: StoredVisit{SrcPK: 1, UUID: uuidA}},
	}}
	p := BuildMergePlan(vd, PlaceDiff{}, ActivityDiff{}, Choices{VisitClash: map[string]string{uuidA: PickSkip}})
	if !p.Empty() {
		t.Fatalf("跳过就不该产生改动: %+v", p)
	}
}

// 活动改了名也要能用 UUID 当键对得上。
func TestActivityKeyPrefersUUID(t *testing.T) {
	if got := ActivityKey(StoredActivity{SrcPK: 1, Name: "上班", UUID: uuidC}); got != uuidC {
		t.Fatalf("有 UUID 就用 UUID，实际 %q", got)
	}
	if got := ActivityKey(StoredActivity{SrcPK: 1, Name: "上班"}); got != "n:上班" {
		t.Fatalf("没有 UUID 退回名称，实际 %q", got)
	}
}