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isBigInt64Array,
isBigUint64Array,
isDate,
isFloat32Array,
isFloat64Array,
isMap,
isSet,
isUint8Array,
} from 'node:util/types'
import { TZDate } from '@date-fns/tz'
import * as Ydb from '@ydbjs/api/value'
import { Dict } from './dict.js'
import { List } from './list.js'
import { Null } from './null.js'
import { Optional } from './optional.js'
import {
Bool,
Bytes,
Datetime,
Double,
Float,
Int32,
Int64,
Primitive,
PrimitiveType,
Text,
TzDatetime,
Uint64,
Uuid,
} from './primitive.js'
import { Struct, StructType } from './struct.js'
import { Tuple } from './tuple.js'
import { type Type, TypeKind } from './type.js'
import { uuidFromBigInts } from './uuid.js'
import type { Value } from './value.js'
export type JSValue =
| null
| boolean
| number
| bigint
| string
| Date
| Uint8Array
| JSValue[]
| Set<JSValue>
| Map<JSValue, JSValue>
| { [key: string]: JSValue }
export function fromYdb(value: Ydb.Value, type: Ydb.Type): Value {
switch (type.type.case) {
case 'typeId':
let pValue = new Primitive({ value: value.value }, new PrimitiveType(type.type.value))
if (value.high128) {
//@ts-expect-error
// Not all primitive types have a high128 property.
// Do not use this property unless you are sure it exists.
pValue.high128 = value.high128
}
return pValue
case 'listType':
return new List(
...value.items.map((v) =>
fromYdb(v, (type.type.value as unknown as Ydb.ListType).item!)
)
)
case 'tupleType':
return new Tuple(
...value.items.map((v, i) =>
fromYdb(v, (type.type.value as unknown as Ydb.TupleType).elements[i]!)
)
)
case 'dictType': {
let dict: [Value, Value][] = []
for (let i = 0; i < value.pairs.length; i++) {
let pair = value.pairs[i]!
dict.push([
fromYdb(pair.key!, type.type.value.key!),
fromYdb(pair.payload!, (type.type.value as unknown as Ydb.DictType).payload!),
])
}
return new Dict(...dict)
}
case 'structType': {
let struct: { [key: string]: Value } = {}
for (let i = 0; i < value.items.length; i++) {
let member = (type.type.value as unknown as Ydb.StructType).members[i]!
struct[member.name] = fromYdb(value.items[i]!, member.type!)
}
return new Struct(struct)
}
case 'nullType':
return new Null()
case 'optionalType':
if (value.value.case === 'nullFlagValue') {
return new Null()
}
return new Optional(fromYdb(value, type.type.value.item!))
}
throw new Error('Unsupported value.')
}
/**
* Convert a native JavaScript value into a YDB `Value`. Types are inferred from
* the input structure.
*
* Note: when converting an array of plain objects (`[{}, ...]`), every struct
* field is wrapped in `Optional`. This keeps the conversion single-pass and
* lets heterogeneous arrays (objects with different key sets) produce a single
* unified struct type. As a consequence, the resulting type never matches
* `NOT NULL` columns on the YDB side.
*
* If you target a schema with `NOT NULL` columns, construct values explicitly:
*
* ```ts
* new List(
* new Struct({ key: new Text('a'), n: new Uint8(1) })
* )
* ```
*
* or build a `StructType` and pass it to `new Struct(obj, type)` to pin the
* field types.
*/
export function fromJs(native: JSValue): Value {
switch (typeof native) {
case 'undefined':
throw new Error('Cannot convert undefined to YDBValue.')
case 'boolean':
return new Bool(native)
case 'number':
return Number.isInteger(native) ? new Int32(native) : new Double(native)
case 'bigint':
return new Int64(native)
case 'string':
return new Text(native)
case 'object': {
if (native === null) {
return new Null()
}
// Check if the object is already a YDB Value
if (
typeof native === 'object' &&
native !== null &&
'type' in native &&
'encode' in native &&
typeof (native as any).encode === 'function'
) {
return native as unknown as Value
}
Iif (isDate(native)) {
return new Datetime(native)
}
Iif (native instanceof TZDate) {
return new TzDatetime(native)
}
if (isUint8Array(native)) {
return new Bytes(native)
}
Iif (isFloat32Array(native)) {
return new List(...Array.from(native, (v) => new Float(v)))
}
Iif (isFloat64Array(native)) {
return new List(...Array.from(native, (v) => new Float(v)))
}
Iif (isBigInt64Array(native)) {
return new List(...Array.from(native, (v) => new Int64(v)))
}
Iif (isBigUint64Array(native)) {
return new List(...Array.from(native, (v) => new Uint64(v)))
}
Iif (isSet(native)) {
return new Tuple(...Array.from(native, fromJs))
}
Iif (isMap(native)) {
let pairs: [Value, Value][] = []
for (let [key, value] of native.entries()) {
pairs.push([fromJs(key as JSValue), fromJs(value as JSValue)])
}
return new Dict(...pairs)
}
if (Array.isArray(native)) {
let values: Value[] = []
let structs: [string, Value][][] = []
for (let i = 0; i < native.length; i++) {
if (
typeof native[i] === 'object' &&
!Array.isArray(native[i]) &&
native[i] !== null
) {
let element = native[i] as { [key: string]: JSValue }
let struct: [string, Value][] = []
for (let key in element) {
let value = fromJs(element[key]!)
struct.push([key, value])
}
structs.push(struct)
continue
}
values.push(fromJs(native[i]!))
}
if (structs.length > 0) {
let structNames: string[] = []
let structNamesSet: Set<string> = new Set()
let structTypes: Type[] = []
let structValues: { [key: string]: Value }[] = []
for (let struct of structs) {
let record: { [key: string]: Value } = {}
for (let [key, value] of struct) {
value = new Optional(value)
if (!structNamesSet.has(key)) {
structNames.push(key)
structTypes.push(value.type)
structNamesSet.add(key)
}
record[key] = value
}
structValues.push(record)
}
let structTypeDef = new StructType(structNames, structTypes)
for (let struct of structValues) {
values.push(new Struct(struct, structTypeDef))
}
}
return new List(...values)
}
let struct: { [key: string]: Value } = {}
for (let [k, v] of Object.entries(native)) {
struct[k] = fromJs(v)
}
return new Struct(struct)
}
}
}
export function toJs(value: Value): JSValue {
switch (value.type.kind) {
case TypeKind.PRIMITIVE:
switch ((value.type as PrimitiveType).id) {
case Ydb.Type_PrimitiveTypeId.BOOL:
return (value as Primitive).value as boolean
case Ydb.Type_PrimitiveTypeId.INT8:
case Ydb.Type_PrimitiveTypeId.INT16:
case Ydb.Type_PrimitiveTypeId.INT32:
case Ydb.Type_PrimitiveTypeId.UINT8:
case Ydb.Type_PrimitiveTypeId.UINT16:
case Ydb.Type_PrimitiveTypeId.UINT32:
case Ydb.Type_PrimitiveTypeId.FLOAT:
case Ydb.Type_PrimitiveTypeId.DOUBLE:
return (value as Primitive).value as number
case Ydb.Type_PrimitiveTypeId.INT64:
case Ydb.Type_PrimitiveTypeId.UINT64:
return (value as Primitive).value as bigint
case Ydb.Type_PrimitiveTypeId.UTF8:
return (value as Primitive).value as string
case Ydb.Type_PrimitiveTypeId.JSON:
case Ydb.Type_PrimitiveTypeId.JSON_DOCUMENT:
return JSON.parse((value as Primitive).value as string) as JSValue
case Ydb.Type_PrimitiveTypeId.STRING:
case Ydb.Type_PrimitiveTypeId.YSON:
return (value as Primitive).value as Uint8Array
case Ydb.Type_PrimitiveTypeId.UUID:
return uuidFromBigInts((value as Uuid).value as bigint, (value as Uuid).high128)
case Ydb.Type_PrimitiveTypeId.DATE:
return new Date(((value as Primitive).value as number) * 24 * 60 * 60 * 1000)
case Ydb.Type_PrimitiveTypeId.DATETIME:
return new Date(((value as Primitive).value as number) * 1000)
case Ydb.Type_PrimitiveTypeId.TIMESTAMP:
return new Date(Number(((value as Primitive).value as bigint) / 1000n))
case Ydb.Type_PrimitiveTypeId.TZ_DATE:
case Ydb.Type_PrimitiveTypeId.TZ_DATETIME:
case Ydb.Type_PrimitiveTypeId.TZ_TIMESTAMP: {
let [dateStr, tz] = ((value as Primitive).value as string).split(',')
return new TZDate(dateStr!, tz!)
}
}
break
case TypeKind.OPTIONAL: {
let { item } = value as Optional<Type>
return item === null ? null : toJs(item)
}
case TypeKind.LIST:
case TypeKind.TUPLE:
return (value as List).items.map(toJs)
case TypeKind.DICT: {
let dict: Map<JSValue, JSValue> = new Map()
for (let [k, v] of (value as Dict).pairs) {
dict.set(toJs(k), toJs(v))
}
return dict
}
case TypeKind.STRUCT: {
let struct: { [key: string]: JSValue } = {}
for (let i = 0; i < (value as Struct).type.names.length; i++) {
struct[(value as Struct).type.names[i]!] = toJs((value as Struct).items[i]!)
}
return struct
}
case TypeKind.NULL:
return null
}
throw new Error('Unsupported value.')
}
export * from './type.js'
export * from './value.js'
|