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ConfigType,
IBaseDBUpdate,
ICoreCache,
ICoreClient,
ICoreKernel,
ICoreKernelModule,
ICorePresenter,
IDataBase,
PopulatedResult,
QInterfaceSearch,
QueryInterface,
RawQuery,
RawQueryResult,
} from '../lib';
import CoreEntity from './CoreEntity';
import CoreEntityWrapper from './CoreEntityWrapper';
import CoreElement from './CoreElement';
import {
type ColumnPropMap,
type EntityConfig,
type EUpDateProperties,
getColumnMeta,
type IEntity,
validateEntity,
} from './annotation';
import { XUtil } from '../utils';
export default abstract class CoreDBCon<
D,
R = any,
M = any,
K extends ICoreKernel<any> = ICoreKernel<any>,
X extends IDataBase<any, any> | null = any,
P extends ICoreClient | null = any,
C extends ICoreCache | null = any,
Y extends ICorePresenter<any> | null = any,
>
extends CoreElement<K, X, P, C, Y>
implements IDataBase<D>
{
dbVersion: string;
updater: IBaseDBUpdate | null;
public schemaName: string;
private connected: boolean;
private cacheEnabled: boolean;
private wrapperMap: Map<string, CoreEntityWrapper<any>>;
private isNew: boolean;
protected constructor(
dbVersion: string,
schemaName: string,
module: ICoreKernelModule<K, X, P, C, Y>,
) {
super(`db${module.getName()}`, module);
this.wrapperMap = new Map<string, CoreEntityWrapper<any>>();
this.connected = false;
this.dbVersion = dbVersion;
this.updater = null;
this.schemaName = schemaName;
this.isNew = false;
this.cacheEnabled = false;
this.debug = this.debug.bind(this);
}
setEntityCache(status: boolean) {
this.cacheEnabled = status;
}
registerEntity<E extends CoreEntity>(
ent: E,
noCache = false,
): CoreEntityWrapper<E> {
if (!validateEntity(ent)) {
this.error(`Invalid Entity: ${ent.constructor.name}`);
throw this.lError('Invalid Entity');
}
const cName = XUtil.getEntityNames(ent);
const wrapper = new CoreEntityWrapper(
this,
cName.tableName,
() => {
return ent;
},
noCache,
);
this.wrapperMap.set(cName.className, wrapper);
return wrapper;
}
getEntityWrapper<E extends CoreEntity>(
className: string,
): CoreEntityWrapper<E> {
if (!this.wrapperMap.has(className)) {
throw this.lError(`Entity not registered: ${className}`);
}
return this.wrapperMap.get(className)!;
}
getEntityMeta() {
const out: { key: string; meta: ColumnPropMap<any> }[] = [];
this.wrapperMap.forEach((value, key) => {
out.push({
key,
meta: value.getPropMap(),
});
});
return out;
}
setUpdateChain(...chain: IBaseDBUpdate[]): void {
const [first] = chain;
if (!first) {
this.error('No element in update chain');
return;
}
this.updater = first;
chain.forEach((el, index) => {
if (index < chain.length - 1) {
el.setNext(chain[index + 1]);
}
});
}
async canUpdate(): Promise<boolean> {
const version = await this.getConfig('dbversion');
if (version) {
return version.c_value !== this.dbVersion;
}
return false;
}
async getCurrenDBVersion(): Promise<string> {
const version = await this.getConfig('dbversion');
return version?.c_value ?? '';
}
async update(): Promise<boolean> {
Eif (this.updater && (await this.canUpdate())) {
const update = this.updater.find(await this.getCurrenDBVersion());
Eif (update) {
return update.update();
}
}
return true;
}
isConnected(): boolean {
return this.connected;
}
setConnected(): void {
this.connected = true;
}
async start(): Promise<void> {
Iif (!(await this.connect())) {
this.error('Cant connect to Database');
process.exit(3);
}
Iif (await this.canUpdate()) {
await this.update();
}
Eif (this.isNew) {
const keys = this.wrapperMap.keys();
let key = keys.next().value;
while (key) {
const wrapper = this.wrapperMap.get(key);
Eif (wrapper) {
await wrapper.init();
}
key = keys.next().value;
}
await this.initNewDB();
}
}
abstract disconnect(): Promise<boolean>;
abstract connect(): Promise<boolean>;
abstract runScripts(...list: RawQuery[]): Promise<R[]>;
abstract queryScript<E>(query: RawQuery): Promise<RawQueryResult<E, M>>;
abstract getConfig(key: string): Promise<ConfigType | undefined>;
abstract setConfig(key: string, value: string): Promise<boolean>;
abstract configExist(key: string): Promise<boolean>;
abstract removeConfig(key: string): Promise<void>;
abstract getRawDBObject(): D | null;
abstract initNewDB(): Promise<void>;
/**
* Create new Entity object
* @param config
* @param entity
*/
abstract createEntity<E extends CoreEntity>(
config: EntityConfig<E>,
entity: E,
): Promise<E>;
/**
* Update Entity object
* @param config
* @param e_id
* @param entity
*/
abstract updateEntity<E extends CoreEntity>(
config: EntityConfig<E>,
e_id: string,
entity: EUpDateProperties<E>,
): Promise<boolean>;
/**
* Update Entity objects
* @param config
* @param e_id
* @param entity
*/
abstract updateBulkEntity<E extends IEntity>(
config: EntityConfig<E>,
e_id: string[],
entity: EUpDateProperties<E>,
): Promise<boolean>;
/**
* Get Entity object by ID
* @param config
* @param e_id
*/
abstract getEntityById<E extends CoreEntity>(
config: EntityConfig<E>,
e_id: string,
): Promise<E | null>;
/**
* Get Entity object by ID
* @param config
* @param e_id
*/
abstract getEntityBulkById<E extends CoreEntity>(
config: EntityConfig<E>,
e_id: string[],
): Promise<E[]>;
/**
* Delete Entity object by ID
* @param className
* @param id
*/
abstract deleteEntityById(className: string, e_id: string): Promise<boolean>;
/**
* Delete Entity objects by ID
* @param className
* @param e_id
*/
abstract deleteEntityBulkById(
className: string,
e_id: string[],
): Promise<boolean>;
/**
* Get Entity object list
* @param query search query config
*/
abstract getEntityList<E extends CoreEntity>(
query: QueryInterface<E>,
): Promise<E[]>;
/**
* Get Entity object list
* @param config
* @param search
*/
abstract findEntity<E extends CoreEntity>(
config: EntityConfig<E>,
search: QInterfaceSearch<E>,
): Promise<E | null>;
/**
* Init Entity object list
* @param className
* @param entity
*/
abstract initEntity<E extends CoreEntity>(
className: string,
entity: E,
): Promise<boolean>;
abstract countEntity<E extends IEntity>(
config: EntityConfig<E>,
search: QInterfaceSearch<E>,
): Promise<number>;
async populate<
E extends CoreEntity,
EK extends keyof E,
Z extends CoreEntity,
>(entity: E, field: EK): Promise<PopulatedResult<E, EK, Z>> {
const meta = getColumnMeta(entity, field);
Eif (!meta?.foreignKey) {
throw this.lError(
`No foreignKey relation metadata found for field "${String(field)}"`,
);
}
if (meta.foreignKey.schema) {
throw this.lError(
`Cross schema relations are not supported for field "${String(field)}"`,
);
}
const targetWrapper = this.getEntityWrapper<Z>(meta.foreignKey.relation);
const search: QInterfaceSearch<Z> = {};
(search as any)[meta.foreignKey.key] = entity[field];
return {
...entity,
[field]: (await targetWrapper.findObj(search))!,
};
}
async populateMany<
E extends CoreEntity,
EK extends keyof E,
Z extends CoreEntity,
>(entity: E[], field: EK): Promise<PopulatedResult<E, EK, Z>[]> {
Eif (entity.length === 0) {
return [];
}
const meta = getColumnMeta(entity[0], field);
if (!meta?.foreignKey) {
throw this.lError(
`No foreignKey relation metadata found for field "${String(field)}"`,
);
}
if (meta.foreignKey.schema) {
throw this.lError(
`Cross schema relations are not supported for field "${String(field)}"`,
);
}
const targetWrapper = this.getEntityWrapper<Z>(meta.foreignKey.relation);
const search: QInterfaceSearch<Z> = {};
(search as any)[meta.foreignKey.key] = {
mode: 'in',
value: entity.map((e) => e[field]),
};
const result = await targetWrapper.getObjList({ search });
return entity.map<PopulatedResult<E, EK, Z>>((e) => ({
...e,
[field]: result.find(
(x) =>
(x as Record<string, unknown>)[meta.foreignKey!.key] === e[field],
)!,
}));
}
getCache(): C | null {
if (!this.cacheEnabled) {
return null;
}
return this.getModule().getCache();
}
/**
* get the db trigger value
*/
getNew(): boolean {
return this.isNew;
}
/**
* trigger the db init
*/
protected setNew(val: boolean): void {
this.isNew = val;
}
}
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