package initdb

import (
	"fmt"
	"testing"

	"github.com/glebarez/sqlite"
	"github.com/stretchr/testify/require"
	"gorm.io/gorm"
	"senlinai-agent/backend/internal/models"
)

func TestInitDatasetCreatesDefaultSourcesWhenOwnerHasNoSources(t *testing.T) {
	database := newDatasetInitTestDatabase(t)
	root, err := InitUser(database)
	require.NoError(t, err)

	require.NoError(t, InitDataset(database, root.ID, root.Identity))
	require.NoError(t, InitDataset(database, root.ID, root.Identity))

	var sources []models.SaDatasetSource
	require.NoError(t, database.Order("id asc").Find(&sources).Error)
	require.Len(t, sources, len(defaultDatasetSources))
	for index, expected := range defaultDatasetSources {
		require.Equal(t, root.ID, sources[index].OwnerID)
		require.Equal(t, root.Identity, sources[index].OwnerIdentity)
		require.Equal(t, expected.Name, sources[index].Name)
		require.Equal(t, expected.URL, sources[index].URL)
		require.Equal(t, expected.IconURL, sources[index].IconURL)
		require.NotNil(t, sources[index].SeedKey)
		require.Equal(t, expected.Key, *sources[index].SeedKey)
		require.Equal(t, "rss", sources[index].Kind)
		require.True(t, sources[index].Enabled)
	}
}

func TestInitDatasetDoesNothingWhenOwnerAlreadyHasSource(t *testing.T) {
	database := newDatasetInitTestDatabase(t)
	root, err := InitUser(database)
	require.NoError(t, err)
	existing := models.SaDatasetSource{
		OwnerID: root.ID,
		Name:    "Existing source",
		Kind:    "manual",
		Enabled: true,
	}
	require.NoError(t, database.Create(&existing).Error)

	require.NoError(t, InitDataset(database, root.ID, root.Identity))

	var sources []models.SaDatasetSource
	require.NoError(t, database.Find(&sources).Error)
	require.Len(t, sources, 1)
	require.Equal(t, existing.Identity, sources[0].Identity)
}

func TestInitDatasetCountsSourcesByOwner(t *testing.T) {
	database := newDatasetInitTestDatabase(t)
	root, err := InitUser(database)
	require.NoError(t, err)
	other := models.SaUser{
		Email: "other@example.com", DisplayName: "Other",
		PasswordHash: "hash", Role: "user",
	}
	require.NoError(t, database.Create(&other).Error)
	require.NoError(t, database.Create(&models.SaDatasetSource{
		OwnerID: other.ID, Name: "Other source", Kind: "manual", Enabled: true,
	}).Error)

	require.NoError(t, InitDataset(database, root.ID, root.Identity))

	var rootCount int64
	require.NoError(t, database.Model(&models.SaDatasetSource{}).
		Where("owner_id = ?", root.ID).
		Count(&rootCount).Error)
	require.Equal(t, int64(len(defaultDatasetSources)), rootCount)
	var otherCount int64
	require.NoError(t, database.Model(&models.SaDatasetSource{}).
		Where("owner_id = ?", other.ID).
		Count(&otherCount).Error)
	require.Equal(t, int64(1), otherCount)
}

func newDatasetInitTestDatabase(t *testing.T) *gorm.DB {
	t.Helper()
	database, err := gorm.Open(
		sqlite.Open(fmt.Sprintf("file:%s?mode=memory&cache=shared", t.Name())),
		&gorm.Config{},
	)
	require.NoError(t, err)
	require.NoError(t, database.AutoMigrate(
		&models.SaUser{},
		&models.SaDatasetSource{},
	))
	return database
}