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

describe('sale updateQuantity()', () => {
    const ctx = {
        req: {
            accessToken: {userId: 9},
            headers: {origin: 'localhost:5000'},
            __: () => {}
        }
    };

    it('should throw an error if the quantity is greater than it should be', async() => {
        const ctx = {
            req: {
                accessToken: {userId: 1},
                headers: {origin: 'localhost:5000'},
                __: () => {}
            }
        };
        const tx = await models.Sale.beginTransaction({});

        let error;
        try {
            const options = {transaction: tx};

            await models.Sale.updateQuantity(ctx, 17, 99, options);

            await tx.rollback();
        } catch (e) {
            await tx.rollback();
            error = e;
        }

        expect(error).toEqual(new Error('The new quantity should be smaller than the old one'));
    });

    it('should add quantity if the quantity is greater than it should be and is role advanced', async() => {
        const tx = await models.Sale.beginTransaction({});
        const saleId = 17;
        const buyerId = 35;
        const ctx = {
            req: {
                accessToken: {userId: buyerId},
                headers: {origin: 'localhost:5000'},
                __: () => {}
            }
        };

        try {
            const options = {transaction: tx};

            const isRoleAdvanced = await models.Ticket.isRoleAdvanced(ctx, options);

            expect(isRoleAdvanced).toEqual(true);

            const originalLine = await models.Sale.findOne({where: {id: saleId}, fields: ['quantity']}, options);

            expect(originalLine.quantity).toEqual(30);

            const newQuantity = originalLine.quantity + 1;
            await models.Sale.updateQuantity(ctx, saleId, newQuantity, options);

            const modifiedLine = await models.Sale.findOne({where: {id: saleId}, fields: ['quantity']}, options);

            expect(modifiedLine.quantity).toEqual(newQuantity);

            await tx.rollback();
        } catch (e) {
            await tx.rollback();
            throw e;
        }
    });

    it('should update the quantity of a given sale current line', async() => {
        const tx = await models.Sale.beginTransaction({});
        const saleId = 25;
        const newQuantity = 4;

        try {
            const options = {transaction: tx};

            const originalLine = await models.Sale.findOne({where: {id: saleId}, fields: ['quantity']}, options);

            expect(originalLine.quantity).toEqual(20);

            await models.Sale.updateQuantity(ctx, saleId, newQuantity, options);

            const modifiedLine = await models.Sale.findOne({where: {id: saleId}, fields: ['quantity']}, options);

            expect(modifiedLine.quantity).toEqual(newQuantity);

            await tx.rollback();
        } catch (e) {
            await tx.rollback();
            throw e;
        }
    });
});