package store

import (
	"path/filepath"
	"testing"
	"time"

	"github.com/waste-go/internal/proto"
)

func TestRoundTrip(t *testing.T) {
	st, err := Open(filepath.Join(t.TempDir(), "test.db"))
	if err != nil {
		t.Fatalf("Open: %v", err)
	}
	defer st.Close()

	msg := &proto.ChatMessage{
		Mid:    "aabbccdd00112233",
		From:   proto.PeerID("deadbeef"),
		Room:   "general",
		Body:   "hello world",
		SentAt: time.Now().UTC().Truncate(time.Second),
	}

	if err := st.SaveMessage(msg); err != nil {
		t.Fatalf("SaveMessage: %v", err)
	}

	// Duplicate mid must be silently ignored.
	if err := st.SaveMessage(msg); err != nil {
		t.Fatalf("duplicate SaveMessage: %v", err)
	}

	msgs, err := st.RecentMessages("general", 10)
	if err != nil {
		t.Fatalf("RecentMessages: %v", err)
	}
	if len(msgs) != 1 {
		t.Fatalf("got %d messages, want 1", len(msgs))
	}
	got := msgs[0]
	if got.Mid != msg.Mid || got.Body != msg.Body || got.Room != msg.Room {
		t.Fatalf("message mismatch: %+v", got)
	}
}

func TestSavePeerAndKnownPeers(t *testing.T) {
	st, err := Open(filepath.Join(t.TempDir(), "test.db"))
	if err != nil {
		t.Fatalf("Open: %v", err)
	}
	defer st.Close()

	if err := st.SavePeer("aabbccdd", "alice"); err != nil {
		t.Fatalf("SavePeer: %v", err)
	}
	// Upsert with updated alias.
	if err := st.SavePeer("aabbccdd", "alice-updated"); err != nil {
		t.Fatalf("SavePeer upsert: %v", err)
	}

	peers, err := st.KnownPeers()
	if err != nil {
		t.Fatalf("KnownPeers: %v", err)
	}
	if peers["aabbccdd"] != "alice-updated" {
		t.Fatalf("alias = %q, want %q", peers["aabbccdd"], "alice-updated")
	}
}

func TestRecentMessagesOrdering(t *testing.T) {
	st, err := Open(filepath.Join(t.TempDir(), "test.db"))
	if err != nil {
		t.Fatalf("Open: %v", err)
	}
	defer st.Close()

	base := time.Now().UTC().Truncate(time.Second)
	for i := range 5 {
		st.SaveMessage(&proto.ChatMessage{
			Mid:    string(rune('a'+i)) + "000000000000000",
			From:   "deadbeef",
			Room:   "general",
			Body:   string(rune('a' + i)),
			SentAt: base.Add(time.Duration(i) * time.Second),
		})
	}

	msgs, err := st.RecentMessages("general", 10)
	if err != nil {
		t.Fatalf("RecentMessages: %v", err)
	}
	if len(msgs) != 5 {
		t.Fatalf("got %d messages, want 5", len(msgs))
	}
	// Must be oldest-first.
	for i := 1; i < len(msgs); i++ {
		if msgs[i].SentAt.Before(msgs[i-1].SentAt) {
			t.Fatalf("messages not in ascending order at index %d", i)
		}
	}
}