package logic

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

	"spark-server/internal/infrastructure/id"
	friendlogic "spark-server/internal/module/friend/logic"
	friendmodel "spark-server/internal/module/friend/model"
	squarelogic "spark-server/internal/module/square/logic"
	squaremodel "spark-server/internal/module/square/model"
	userentity "spark-server/internal/module/user/entity"
	"spark-server/internal/module/user/logictest"
	"spark-server/internal/pkg/errs"
)

func TestParseRSSAndFormat(t *testing.T) {
	body := []byte(`<?xml version="1.0"?>
<rss version="2.0"><channel>
<title>Demo News</title>
<item>
<title>Hello &amp; World</title>
<link>https://example.com/a</link>
<description>&lt;p&gt;Short summary here.&lt;/p&gt;</description>
</item>
</channel></rss>`)
	items, err := parseFeed(body, "https://example.com/rss")
	if err != nil || len(items) != 1 {
		t.Fatalf("%+v %v", items, err)
	}
	if items[0].Title != "Hello & World" || items[0].Link != "https://example.com/a" {
		t.Fatalf("%+v", items[0])
	}
	text := FormatPostText(items[0])
	if !strings.Contains(text, "Demo News") || !strings.Contains(text, "https://example.com/a") {
		t.Fatalf("text=%q", text)
	}
}

func TestPublishBotMediaTTLAndDedupe(t *testing.T) {
	ids, err := id.New(2)
	if err != nil {
		t.Fatal(err)
	}
	users := logictest.Users(ids, nil)
	friends := friendlogic.NewService(friendmodel.NewMemoryRepo(), users, ids, nil)
	square := squarelogic.NewService(squaremodel.NewMemoryRepo(), friends, users, nil, ids)
	ctx := t.Context()
	u, err := users.AuthenticateEmail(ctx, "test01@spark.com", "1", &userentity.LoginDevice{
		DeviceID: 9, DeviceType: userentity.DeviceIOS,
	})
	if err != nil {
		t.Fatal(err)
	}
	in := &squarelogic.BotPublishInput{
		Text: "title\n\nsum\n\nhttps://example.com/x", SourceURL: "https://example.com/x", TTL: time.Hour,
	}
	v, err := square.PublishBotMedia(ctx, u.ID, in)
	if err != nil || v == nil {
		t.Fatalf("%v %v", v, err)
	}
	_, err = square.PublishBotMedia(ctx, u.ID, in)
	if !errors.Is(err, errs.ErrDuplicate) {
		t.Fatalf("want duplicate got %v", err)
	}
	feed, err := square.Feed(ctx, u.ID, 0, 20)
	if err != nil || len(feed.Items) < 1 {
		t.Fatalf("feed %+v %v", feed, err)
	}
	n, err := square.ExpireBotPosts(ctx, time.Now().Add(2*time.Hour), 10)
	if err != nil || n < 1 {
		t.Fatalf("expire %d %v", n, err)
	}
	feed2, err := square.Feed(ctx, u.ID, 0, 20)
	if err != nil {
		t.Fatal(err)
	}
	for _, it := range feed2.Items {
		if it.ID == v.ID {
			t.Fatal("expired post still visible")
		}
	}
}

func TestServiceDisabledWithoutDeps(t *testing.T) {
	svc := NewService(nil, nil, nil, nil, Options{Enabled: true})
	if svc.Enabled() {
		t.Fatal("enabled without deps")
	}
}

type stubUsers struct {
	u *userentity.User
}

func (s stubUsers) GetByEmail(context.Context, string) (*userentity.User, error) {
	if s.u == nil {
		return nil, errs.ErrNotFound
	}
	return s.u, nil
}

type stubSquare struct {
	published int
	expired   int
}

func (s *stubSquare) PublishBotMedia(context.Context, int64, *squarelogic.BotPublishInput) (*squarelogic.View, error) {
	s.published++
	return &squarelogic.View{ID: 1}, nil
}

func (s *stubSquare) ExpireBotPosts(context.Context, time.Time, int) (int, error) {
	s.expired++
	return 0, nil
}

func TestTickExpiresEvenIfFeedFails(t *testing.T) {
	sq := &stubSquare{}
	users := stubUsers{u: &userentity.User{ID: 7, Nickname: "Bot"}}
	svc := NewService(nil, sq, users, nil, Options{
		Enabled: true, Interval: time.Minute, TTL: time.Hour, BotIndexes: []int{1},
	})
	svc.opts.Feeds = []string{"http://127.0.0.1:1/nope"}
	err := svc.Tick(t.Context())
	if err == nil {
		t.Fatal("expected feed error")
	}
	if sq.expired != 1 {
		t.Fatalf("expire called %d", sq.expired)
	}
}