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 { TableUnique } from "../../../src/schema-builder/table/TableUnique"

describe("query runner > create unique constraint", () => {
    let connections: DataSource[]
    before(async () => {
        connections = await createTestingConnections({
            entities: [__dirname + "/entity/*{.js,.ts}"],
            enabledDrivers: [
                "mssql",
                "postgres",
                "sqlite",
                "better-sqlite3",
                "oracle",
                "cockroachdb",
            ], // mysql and sap does not supports unique constraints
            schemaCreate: true,
            dropSchema: true,
        })
    })
    beforeEach(() => reloadTestingDatabases(connections))
    after(() => closeTestingConnections(connections))

    it("should correctly create unique constraint and revert creation", () =>
        Promise.all(
            connections.map(async (connection) => {
                const queryRunner = connection.createQueryRunner()
                await queryRunner.createTable(
                    new Table({
                        name: "category",
                        columns: [
                            {
                                name: "id",
                                type: "int",
                                isPrimary: true,
                            },
                            {
                                name: "name",
                                type: "varchar",
                            },
                        ],
                    }),
                    true,
                )

                await queryRunner.createTable(
                    new Table({
                        name: "question",
                        columns: [
                            {
                                name: "id",
                                type: "int",
                                isPrimary: true,
                            },
                            {
                                name: "name",
                                type: "varchar",
                            },
                            {
                                name: "description",
                                type: "varchar",
                            },
                        ],
                    }),
                    true,
                )

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

                const categoryUniqueConstraint = new TableUnique({
                    columnNames: ["name"],
                })
                await queryRunner.createUniqueConstraint(
                    "category",
                    categoryUniqueConstraint,
                )

                const questionUniqueConstraint = new TableUnique({
                    columnNames: ["name", "description"],
                })
                await queryRunner.createUniqueConstraint(
                    "question",
                    questionUniqueConstraint,
                )

                let categoryTable = await queryRunner.getTable("category")
                categoryTable!.findColumnByName("name")!.isUnique.should.be.true
                categoryTable!.uniques.length.should.be.equal(1)

                let questionTable = await queryRunner.getTable("question")
                // when unique constraint defined on multiple columns. each of this columns must be non-unique,
                // because they are unique only in complex.
                questionTable!.findColumnByName("name")!.isUnique.should.be
                    .false
                questionTable!.findColumnByName("description")!.isUnique.should
                    .be.false
                questionTable!.uniques.length.should.be.equal(1)

                await queryRunner.executeMemoryDownSql()

                categoryTable = await queryRunner.getTable("category")
                categoryTable!.findColumnByName("name")!.isUnique.should.be
                    .false
                categoryTable!.uniques.length.should.be.equal(0)

                questionTable = await queryRunner.getTable("question")
                questionTable!.findColumnByName("name")!.isUnique.should.be
                    .false
                questionTable!.findColumnByName("description")!.isUnique.should
                    .be.false
                questionTable!.uniques.length.should.be.equal(0)

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