package core

import (
	"encoding/json"
	"strings"
	"testing"
	"time"
)

func TestWorkCardSurvivesPersistedSnapshot(t *testing.T) {
	completed := time.Date(2026, 10, 15, 6, 0, 0, 0, time.UTC)
	card := ActivityCard{ID: "card_work", Status: CardDone, Work: &WorkCard{
		Result:        strings.Repeat("完整结果\n", 200) + "最后一项依据",
		ResultVersion: 2, ReadVersion: 1, CompletedAt: &completed,
		Decision: &WorkDecision{Mode: "multiple", State: "submitted", Options: []WorkOption{{ID: "summary", Label: "生成摘要"}},
			SelectedIDs: []string{"summary"}, FreeText: "请突出关键限制", RespondedAt: &completed},
	}}
	data, err := json.Marshal(card)
	if err != nil {
		t.Fatal(err)
	}
	var restored ActivityCard
	if err := json.Unmarshal(data, &restored); err != nil {
		t.Fatal(err)
	}
	if restored.Work == nil || restored.Work.Result != card.Work.Result || restored.Work.ReadVersion != 1 || restored.Work.ResultVersion != 2 {
		t.Fatalf("complete result or unread version lost: %+v", restored.Work)
	}
	if d := restored.Work.Decision; d.State != "submitted" || d.SelectedIDs[0] != "summary" || d.FreeText != "请突出关键限制" || !d.RespondedAt.Equal(completed) {
		t.Fatalf("decision history lost: %+v", d)
	}
}

func TestLegacyCardOmitsOptionalWork(t *testing.T) {
	var legacy ActivityCard
	if err := json.Unmarshal([]byte(`{"id":"old","status":"resolved","body":[{"type":"markdown","markdown":"保留历史"}]}`), &legacy); err != nil {
		t.Fatal(err)
	}
	data, err := json.Marshal(legacy)
	if err != nil {
		t.Fatal(err)
	}
	if legacy.Work != nil || strings.Contains(string(data), `"work"`) || legacy.Body[0].Markdown != "保留历史" {
		t.Fatalf("legacy payload changed: %s", data)
	}
}