import "reflect-metadata"
import { DataSource } from "../../../src/data-source/DataSource"
import {
    closeTestingConnections,
    createTestingConnections,
} from "../../utils/test-utils"
import { Post } from "./entity/Post"

describe("github issues > #1377 Add support for `GENERATED ALWAYS AS` in MySQL", () => {
    let connections: DataSource[]
    before(async () => {
        connections = await createTestingConnections({
            entities: [__dirname + "/entity/*{.js,.ts}"],
            enabledDrivers: ["mysql"],
            schemaCreate: true,
            dropSchema: true,
        })
    })
    after(() => closeTestingConnections(connections))

    it("should correctly create table with generated columns", () =>
        Promise.all(
            connections.map(async (connection) => {
                const queryRunner = connection.createQueryRunner()
                let table = await queryRunner.getTable("post")
                table!
                    .findColumnByName("virtualFullName")!
                    .asExpression!.should.be.equal(
                        "concat(`firstName`,' ',`lastName`)",
                    )
                table!
                    .findColumnByName("virtualFullName")!
                    .generatedType!.should.be.equal("VIRTUAL")
                table!
                    .findColumnByName("storedFullName")!
                    .asExpression!.should.be.equal(
                        "concat(`firstName`,' ',`lastName`)",
                    )
                table!
                    .findColumnByName("storedFullName")!
                    .generatedType!.should.be.equal("STORED")

                const metadata = connection.getMetadata(Post)
                const virtualFullNameColumn =
                    metadata.findColumnWithPropertyName("virtualFullName")
                virtualFullNameColumn!.generatedType = "STORED"

                const storedFullNameColumn =
                    metadata.findColumnWithPropertyName("storedFullName")
                storedFullNameColumn!.asExpression =
                    "concat('Mr. ',`firstName`,' ',`lastName`)"
                await connection.synchronize()

                table = await queryRunner.getTable("post")
                table!
                    .findColumnByName("virtualFullName")!
                    .generatedType!.should.be.equal("STORED")
                table!
                    .findColumnByName("storedFullName")!
                    .asExpression!.should.be.equal(
                        "concat('Mr. ',`firstName`,' ',`lastName`)",
                    )

                await queryRunner.release()
            }),
        ))
})