import "reflect-metadata"
import { DataSource } from "../../../src/data-source/DataSource"
import {
    closeTestingConnections,
    createTestingConnections,
    reloadTestingDatabases,
} from "../../utils/test-utils"
import { Table } from "../../../src/schema-builder/table/Table"
import { TableIndex } from "../../../src/schema-builder/table/TableIndex"
import { DriverUtils } from "../../../src/driver/DriverUtils"

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

    it("should correctly create index and revert creation", () =>
        Promise.all(
            connections.map(async (connection) => {
                let numericType = "int"
                if (DriverUtils.isSQLiteFamily(connection.driver)) {
                    numericType = "integer"
                } else if (connection.driver.options.type === "spanner") {
                    numericType = "int64"
                }

                let stringType = "varchar"
                if (connection.driver.options.type === "spanner") {
                    stringType = "string"
                }

                const queryRunner = connection.createQueryRunner()
                await queryRunner.createTable(
                    new Table({
                        name: "question",
                        columns: [
                            {
                                name: "id",
                                type: numericType,
                                isPrimary: true,
                            },
                            {
                                name: "name",
                                type: stringType,
                            },
                            {
                                name: "description",
                                type: stringType,
                            },
                        ],
                    }),
                    true,
                )

                // clear sqls in memory to avoid removing tables when down queries executed.
                queryRunner.clearSqlMemory()

                const index = new TableIndex({
                    columnNames: ["name", "description"],
                })
                await queryRunner.createIndex("question", index)

                const uniqueIndex = new TableIndex({
                    columnNames: ["description"],
                    isUnique: true,
                })
                await queryRunner.createIndex("question", uniqueIndex)

                let table = await queryRunner.getTable("question")

                // CockroachDB stores unique indices as UNIQUE constraints
                if (connection.driver.options.type === "cockroachdb") {
                    table!.indices.length.should.be.equal(1)
                    table!.uniques.length.should.be.equal(1)
                } else {
                    table!.indices.length.should.be.equal(2)
                }

                await queryRunner.executeMemoryDownSql()

                table = await queryRunner.getTable("question")
                table!.indices.length.should.be.equal(0)
                table!.uniques.length.should.be.equal(0)

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