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166 lines (147 loc) · 4.42 KB
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import {
SelectQueryBuilder,
InsertQueryBuilder,
UpdateQueryBuilder,
DeleteQueryBuilder
} from "../query-builder";
import {
PaginatedResult,
PaginationOptions,
QueryResult,
QueryRowsPayload,
SqlExecutor,
WhereCondition
} from "../types";
import { buildWhereClause } from "../utils";
interface RepositoryOptions {
logging?: boolean;
}
export class Repository<T> {
constructor(
protected readonly tableName: string,
protected readonly executor: SqlExecutor,
protected options?: RepositoryOptions
) {}
async find(payload?: QueryRowsPayload<T>): Promise<T[]> {
const builder = new SelectQueryBuilder<T>(this.tableName, this.executor);
if (payload?.where) builder.where(payload.where);
if (payload?.joins) {
payload.joins.forEach((join) => builder.join(join));
}
if (payload?.orderBy) builder.orderBy(payload.orderBy);
if (payload?.limit) builder.limit(payload.limit);
if (payload?.offset) builder.offset(payload.offset);
if (payload?.columns) builder.select(payload.columns);
const result = await builder.commit();
if (this.options?.logging) {
console.log({
operationName: payload.operationName,
sql: builder.build().sql,
values: builder.build().values,
result: {
rows: JSON.stringify(result.rows, null, 2),
rowCount: result.rowCount
}
});
}
return result.rows;
}
/**
* Paginate the result of a query
* @param options
*/
paginate(options: PaginationOptions<T>): Promise<PaginatedResult<T>> {
const builder = new SelectQueryBuilder<T>(this.tableName, this.executor);
if (options.where) builder.where(options.where);
if (options.joins) {
options.joins.forEach((join) => builder.join(join));
}
if (options.orderBy) builder.orderBy(options.orderBy);
if (options.limit) builder.limit(options.limit);
if (options.offset) builder.offset(options.offset);
if (options.columns) builder.select(options.columns);
return builder.paginate(options);
}
async count(where: WhereCondition<T>): Promise<number> {
const { whereClause, values } = buildWhereClause(where, this.tableName);
// Construct the SQL query
const query = `
SELECT COUNT(*) as count
FROM ${this.tableName}
${whereClause ? `WHERE ${whereClause}` : ""};
`;
const result = await this.executor.executeSQL(query, values);
return parseInt(result.rows[0].count, 10);
}
async insert(
data: Partial<T>[],
returning?: Array<keyof T>
): Promise<QueryResult<T>> {
const builder = new InsertQueryBuilder<T>(this.tableName, this.executor);
const cursor = builder.values(data);
if (returning) {
cursor.returning(returning);
}
const result = await cursor.commit();
if (this.options?.logging) {
console.log({
sql: builder.build().sql,
values: builder.build().values,
result: {
rows: JSON.stringify(result.rows, null, 2),
rowCount: result.rowCount
}
});
}
return result;
}
async update(args: {
where: WhereCondition<T>;
data: Partial<T>;
returning?: Array<keyof T>;
operationName?: string;
}): Promise<QueryResult<T>> {
const { where, data, returning = ["*"] as any } = args;
const builder = new UpdateQueryBuilder<T>(this.tableName, this.executor);
const result = await builder
.set(data)
.where(where)
.returning(returning)
.commit();
if (this.options?.logging) {
console.log({
operationName: args.operationName,
sql: builder.build().sql,
values: builder.build().values,
result: {
rows: JSON.stringify(result.rows, null, 2),
rowCount: result.rowCount
}
});
}
return result;
}
async delete(args: {
where: WhereCondition<T>;
returning?: Array<keyof T>;
operationName?: string;
}): Promise<QueryResult<T> | null> {
const builder = new DeleteQueryBuilder<T>(this.tableName, this.executor);
const result = await builder
.where(args.where)
.returning(args.returning)
.commit();
if (this.options?.logging) {
console.log({
operationName: args.operationName,
sql: builder.build().sql,
values: builder.build().values,
result: {
rows: JSON.stringify(result.rows, null, 2),
rowCount: result.rowCount
}
});
}
return result;
}
}