const {models} = require('vn-loopback/server/server');

describe('itemMinimumQuantity model', () => {
    const itemFk = 5;
    const quantity = 100;
    const warehouseFk = 60;

    beforeEach(async() => {
        await models.ItemMinimumQuantity.destroyAll({where: {itemFk: itemFk}});
    });

    describe('CRUD operations', () => {
        it('should create a new itemMinimumQuantity record', async() => {
            const newRecord = {
                itemFk: itemFk,
                quantity: quantity,
                started: Date.vnNew(),
                ended: new Date(Date.vnNew().setFullYear(Date.vnNew().getFullYear() + 1)),
                warehouseFk: warehouseFk
            };

            const createdRecord = await models.ItemMinimumQuantity.create(newRecord);

            expect(createdRecord).toBeDefined();
            expect(createdRecord.quantity).toEqual(newRecord.quantity);
        });

        it('should read an existing itemMinimumQuantity record', async() => {
            const newRecord = {
                itemFk: itemFk,
                quantity: quantity,
                started: Date.vnNew(),
                ended: new Date(Date.vnNew().setFullYear(Date.vnNew().getFullYear() + 2)),
                warehouseFk: warehouseFk
            };

            await models.ItemMinimumQuantity.create(newRecord);

            const existingRecord = await models.ItemMinimumQuantity.findOne({where: {itemFk: itemFk}});

            expect(existingRecord).toBeDefined();
            expect(existingRecord.itemFk).toEqual(itemFk);
        });

        it('should update an existing itemMinimumQuantity record', async() => {
            const newRecord = {
                itemFk: itemFk,
                quantity: quantity,
                started: Date.vnNew(),
                ended: new Date(Date.vnNew().setFullYear(Date.vnNew().getFullYear() + 3)),
                warehouseFk: warehouseFk
            };

            await models.ItemMinimumQuantity.create(newRecord);

            const newQuantity = 150;
            const existingRecord = await models.ItemMinimumQuantity.findOne({where: {itemFk: itemFk}});
            existingRecord.quantity = newQuantity;

            await existingRecord.save();
            const updatedRecord = await models.ItemMinimumQuantity.findOne({where: {itemFk: itemFk}});

            expect(updatedRecord.quantity).toEqual(newQuantity);
        });
    });

    describe('validation and constraints', () => {
        it('should enforce unique constraint on itemFk, started, ended, and warehouseFk', async() => {
            const newRecord = {
                itemFk: itemFk,
                quantity: quantity,
                started: Date.vnNew(),
                ended: Date.vnNew().setFullYear(Date.vnNew().getFullYear() + 5),
                warehouseFk: warehouseFk
            };

            try {
                await models.ItemMinimumQuantity.create(newRecord);
                await models.ItemMinimumQuantity.create(newRecord);
            } catch (e) {
                expect(e).toBeDefined();
                expect(e.code).toContain('ER_SIGNAL_EXCEPTION');
            }
        });

        it('should allow null values for ended and warehouseFk', async() => {
            const newRecord = {
                itemFk: itemFk,
                quantity: quantity,
                started: Date.vnNew(),
                ended: null,
                warehouseFk: null
            };

            const createdRecord = await models.ItemMinimumQuantity.create(newRecord);

            expect(createdRecord).toBeDefined();
            expect(createdRecord.ended).toBeNull();
            expect(createdRecord.warehouseFk).toBeNull();
        });
    });
});