import "reflect-metadata"
import { expect } from "chai"

import { DataSource } from "../../../src"
//import { DataSource, TableColumn } from "../../../src"
import {
    closeTestingConnections,
    createTestingConnections,
    reloadTestingDatabases,
} from "../../utils/test-utils"

import { Foo } from "./entity/Foo"
import { Bar } from "./entity/Bar"

describe("github issues > #9770 check for referencing foreign keys when altering a table using sqlite", () => {
    let dataSources: DataSource[]
    before(async () => {
        dataSources = await createTestingConnections({
            entities: [__dirname + "/entity/*{.js,.ts}"],
            migrations: [__dirname + "/migration/*{.js,.ts}"],
            enabledDrivers: ["sqlite", "better-sqlite3"],
            schemaCreate: true,
            dropSchema: true,
            logging: true,
        })
    })
    beforeEach(() => reloadTestingDatabases(dataSources))
    after(() => closeTestingConnections(dataSources))

    it("shouldn't loose dependant table data", () =>
        Promise.all(
            dataSources.map(async (dataSource) => {
                const manager = dataSource.manager

                // Insert records in the tables
                const foo = new Foo()
                foo.data = "foo"
                await manager.save(foo)
                const foundFoo = await manager.findOne(Foo, {
                    where: {
                        id: 1,
                    },
                })
                expect(foundFoo).not.to.be.null

                if (!foundFoo) return

                const bar = new Bar()
                bar.foo = foundFoo
                bar.data = "bar"
                await manager.save(bar)

                const foundBar = await manager.findOne(Bar, {
                    where: {
                        foo: {
                            id: foundFoo.id,
                        },
                    },
                })
                expect(foundBar).not.to.be.null

                // check current state (migrations pending and entries in db)
                const migrations = await dataSource.showMigrations()
                migrations.should.be.equal(true)

                const queryRunner = dataSource.createQueryRunner()
                let barRecords = await queryRunner.query(`SELECT * FROM "bar"`)
                expect(barRecords).to.have.lengthOf.above(0)

                // run migrations which contains a table drop
                await dataSource.runMigrations()

                // check post migration (no more pending migration and data still in db)
                const migrations2 = await dataSource.showMigrations()
                migrations2.should.be.equal(false)

                // check if data still exists in dependant table
                barRecords = await queryRunner.query(`SELECT * FROM "bar"`)
                expect(barRecords).to.have.lengthOf.above(0)

                // revert changes
                await queryRunner.executeMemoryDownSql()

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