package share

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

	"git.wntrmute.dev/kyle/eng-pad-server/internal/auth"
	"git.wntrmute.dev/kyle/eng-pad-server/internal/db"
)

func setupTestDB(t *testing.T) (*db.TestDB, int64) {
	t.Helper()
	dir := t.TempDir()
	database, err := db.Open(filepath.Join(dir, "test.db"))
	if err != nil {
		t.Fatalf("open: %v", err)
	}
	if err := db.Migrate(database); err != nil {
		t.Fatalf("migrate: %v", err)
	}
	t.Cleanup(func() { _ = database.Close() })

	userID, err := auth.CreateUser(database, "test", "pass", auth.DefaultParams)
	if err != nil {
		t.Fatalf("create user: %v", err)
	}

	_, err = database.Exec(
		"INSERT INTO notebooks (user_id, remote_id, title, page_size, synced_at) VALUES (?, 1, 'Test', 'REGULAR', ?)",
		userID, time.Now().UnixMilli(),
	)
	if err != nil {
		t.Fatalf("insert notebook: %v", err)
	}

	return &db.TestDB{DB: database}, 1 // notebook ID
}

func TestCreateAndValidateLink(t *testing.T) {
	tdb, notebookID := setupTestDB(t)

	token, _, err := CreateLink(tdb.DB, notebookID, 0, "https://example.com")
	if err != nil {
		t.Fatalf("create: %v", err)
	}
	if token == "" {
		t.Fatal("expected non-empty token")
	}

	nbID, err := ValidateLink(tdb.DB, token)
	if err != nil {
		t.Fatalf("validate: %v", err)
	}
	if nbID != notebookID {
		t.Fatalf("expected notebook %d, got %d", notebookID, nbID)
	}
}

func TestExpiredLink(t *testing.T) {
	tdb, notebookID := setupTestDB(t)

	token, _, err := CreateLink(tdb.DB, notebookID, -time.Hour, "https://example.com")
	if err != nil {
		t.Fatalf("create: %v", err)
	}

	_, err = ValidateLink(tdb.DB, token)
	if err == nil {
		t.Fatal("expected error for expired link")
	}
}

func TestRevokeLink(t *testing.T) {
	tdb, notebookID := setupTestDB(t)

	token, _, err := CreateLink(tdb.DB, notebookID, 0, "https://example.com")
	if err != nil {
		t.Fatalf("create: %v", err)
	}

	if err := RevokeLink(tdb.DB, token); err != nil {
		t.Fatalf("revoke: %v", err)
	}

	_, err = ValidateLink(tdb.DB, token)
	if err == nil {
		t.Fatal("expected error for revoked link")
	}
}

func TestListLinks(t *testing.T) {
	tdb, notebookID := setupTestDB(t)

	_, _, _ = CreateLink(tdb.DB, notebookID, 0, "https://example.com")
	_, _, _ = CreateLink(tdb.DB, notebookID, time.Hour, "https://example.com")

	links, err := ListLinks(tdb.DB, notebookID, "https://example.com")
	if err != nil {
		t.Fatalf("list: %v", err)
	}
	if len(links) != 2 {
		t.Fatalf("expected 2 links, got %d", len(links))
	}
}