import "reflect-metadata";
import {Connection} from "../../../src/connection/Connection";
import {closeTestingConnections, createTestingConnections, reloadTestingDatabases} from "../../utils/test-utils";
import {ForeignKeyMetadata} from "../../../src/metadata/ForeignKeyMetadata";

describe("schema builder > create foreign key", () => {

    let connections: Connection[];
    before(async () => {
        connections = await createTestingConnections({
            entities: [__dirname + "/entity/*{.js,.ts}"],
            schemaCreate: true,
            dropSchema: true,
        });
    });
    beforeEach(() => reloadTestingDatabases(connections));
    after(() => closeTestingConnections(connections));

    it("should correctly create foreign key", () => Promise.all(connections.map(async connection => {
        const categoryMetadata = connection.getMetadata("category");
        const postMetadata = connection.getMetadata("post");
        const columns = categoryMetadata.columns.filter(column => ["postText", "postTag"].indexOf(column.propertyName) !== -1);
        const referencedColumns = postMetadata.columns.filter(column => ["text", "tag"].indexOf(column.propertyName) !== -1);
        const fkMetadata = new ForeignKeyMetadata({
            entityMetadata: categoryMetadata,
            referencedEntityMetadata: postMetadata,
            columns: columns,
            referencedColumns: referencedColumns,
            namingStrategy: connection.namingStrategy
        });
        categoryMetadata.foreignKeys.push(fkMetadata);

        await connection.synchronize();

        const queryRunner = connection.createQueryRunner();
        const table = await queryRunner.getTable("category");
        await queryRunner.release();

        table!.foreignKeys.length.should.be.equal(1);
        table!.indices.length.should.be.equal(0);

    })));

});