package store

import (
	"context"
	"os"
	"testing"

	"booklib/internal/db"
)

func setup(t *testing.T) *Store {
	t.Helper()
	url := os.Getenv("DATABASE_URL")
	if url == "" {
		t.Skip("DATABASE_URL not set")
	}
	ctx := context.Background()
	p, err := db.Connect(ctx, url)
	if err != nil {
		t.Fatal(err)
	}
	if err := db.Migrate(ctx, p); err != nil {
		t.Fatal(err)
	}
	s := New(p)
	for _, q := range []string{
		"DELETE FROM reading_progress", "DELETE FROM books", "DELETE FROM libraries", "DELETE FROM users"} {
		if _, err := p.Exec(ctx, q); err != nil {
			t.Fatal(err)
		}
	}
	return s
}

func TestBooksDiffLifecycle(t *testing.T) {
	s := setup(t)
	ctx := context.Background()
	libID, err := s.CreateLibrary(ctx, "comics", "/data/books/comics")
	if err != nil {
		t.Fatal(err)
	}
	bid, err := s.InsertBook(ctx, libID, "series-a/01.cbz", "01", "cbz", 100, 1000, 24)
	if err != nil {
		t.Fatal(err)
	}
	meta, err := s.ListBookMeta(ctx, libID)
	if err != nil {
		t.Fatal(err)
	}
	if m := meta["series-a/01.cbz"]; m.ID != bid || m.Size != 100 {
		t.Fatalf("bad meta %+v", m)
	}
	if err := s.UpdateBookFile(ctx, bid, 200, 2000, 25); err != nil {
		t.Fatal(err)
	}
	b, _ := s.GetBook(ctx, bid)
	if b.FileSize != 200 || b.PageCount != 25 {
		t.Fatalf("update failed: %+v", b)
	}
	if err := s.SetBookState(ctx, bid, "error", "boom"); err != nil {
		t.Fatal(err)
	}
	b, _ = s.GetBook(ctx, bid)
	if b.State != "error" || b.ErrMsg != "boom" {
		t.Fatal("state not set")
	}
	// changed + deleted 的 diff 输入验证
	meta, _ = s.ListBookMeta(ctx, libID)
	if _, ok := meta["nope.cbz"]; ok {
		t.Fatal("unexpected row")
	}
	if err := s.DeleteBookByPath(ctx, libID, "series-a/01.cbz"); err != nil {
		t.Fatal(err)
	}
	if _, err := s.GetBook(ctx, bid); err == nil {
		t.Fatal("book still exists")
	}
}

func TestProgressUpsertAndJoin(t *testing.T) {
	s := setup(t)
	ctx := context.Background()
	uid, _ := s.CreateUser(ctx, "u1", "h", "member")
	libID, _ := s.CreateLibrary(ctx, "l", "/data/books/l")
	bid, err := s.InsertBook(ctx, libID, "x/a.cbz", "a", "cbz", 1, 1, 3)
	if err != nil {
		t.Fatal(err)
	}
	if err := s.UpsertProgress(ctx, uid, libID, "x/a.cbz", []byte(`{"page":2}`), 0.5); err != nil {
		t.Fatal(err)
	}
	if err := s.UpsertProgress(ctx, uid, libID, "x/a.cbz", []byte(`{"page":3}`), 0.9); err != nil {
		t.Fatal(err) // upsert 不报错
	}
	p, err := s.GetProgress(ctx, uid, libID, "x/a.cbz")
	// jsonb 规范输出: 冒号后有空格
	if err != nil || p.Percent != 0.9 || string(p.Locator) != `{"page": 3}` {
		t.Fatalf("bad progress %+v %v", p, err)
	}
	list, _ := s.ListProgress(ctx, uid)
	if len(list) != 1 {
		t.Fatalf("want 1 got %d", len(list))
	}
	// 删书行,进度保留(spec §4)
	if err := s.DeleteBook(ctx, bid); err != nil {
		t.Fatal(err)
	}
	if _, err := s.GetProgress(ctx, uid, libID, "x/a.cbz"); err != nil {
		t.Fatal("progress lost with book")
	}
	// 列表联查带本人 percent
	_, _ = s.InsertBook(ctx, libID, "x/a.cbz", "a", "cbz", 1, 1, 3)
	views, _ := s.ListBooks(ctx, 0, "", "", uid)
	if len(views) != 1 || views[0].Percent != 0.9 {
		t.Fatalf("views %+v", views)
	}
}