package database

import (
	"io/fs"
	"testing"

	"nex/backend/migrations"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestEmbeddedMigrations_SQLiteResourcesPresent(t *testing.T) {
	entries, err := fs.ReadDir(migrations.FS, "sqlite")
	require.NoError(t, err)

	var sqlFiles []string
	for _, entry := range entries {
		if !entry.IsDir() {
			sqlFiles = append(sqlFiles, entry.Name())
		}
	}
	assert.NotEmpty(t, sqlFiles, "SQLite 迁移资源应至少包含一个 .sql 文件")
}

func TestEmbeddedMigrations_MySQLResourcesPresent(t *testing.T) {
	entries, err := fs.ReadDir(migrations.FS, "mysql")
	require.NoError(t, err)

	var sqlFiles []string
	for _, entry := range entries {
		if !entry.IsDir() {
			sqlFiles = append(sqlFiles, entry.Name())
		}
	}
	assert.NotEmpty(t, sqlFiles, "MySQL 迁移资源应至少包含一个 .sql 文件")
}

func TestEmbeddedMigrations_SQLiteSQLParsable(t *testing.T) {
	subFS, err := fs.Sub(migrations.FS, "sqlite")
	require.NoError(t, err)

	entries, err := fs.ReadDir(subFS, ".")
	require.NoError(t, err)

	for _, entry := range entries {
		if entry.IsDir() {
			continue
		}
		data, err := fs.ReadFile(subFS, entry.Name())
		require.NoError(t, err, "无法读取迁移文件: %s", entry.Name())
		assert.NotEmpty(t, data, "迁移文件内容不应为空: %s", entry.Name())
	}
}

func TestEmbeddedMigrations_MySQLSQLParsable(t *testing.T) {
	subFS, err := fs.Sub(migrations.FS, "mysql")
	require.NoError(t, err)

	entries, err := fs.ReadDir(subFS, ".")
	require.NoError(t, err)

	for _, entry := range entries {
		if entry.IsDir() {
			continue
		}
		data, err := fs.ReadFile(subFS, entry.Name())
		require.NoError(t, err, "无法读取迁移文件: %s", entry.Name())
		assert.NotEmpty(t, data, "迁移文件内容不应为空: %s", entry.Name())
	}
}