// Load modules

var Lab = require('lab');
var Code = require('code');
var Joi = require('../lib');
var Helper = require('./helper');


// Declare internals

var internals = {};


// Test shortcuts

var lab = exports.lab = Lab.script();
var describe = lab.describe;
var it = lab.it;
var expect = Code.expect;


describe('ref', function () {

    it('uses ref as a valid value', function (done) {

        var schema = Joi.object({
            a: Joi.ref('b'),
            b: Joi.any()
        });

        schema.validate({ a: 5, b: 6 }, function (err, value) {

            expect(err).to.exist();
            expect(err.message).to.equal('child "a" fails because ["a" must be one of [ref:b]]');

            Helper.validate(schema, [
                [{ a: 5 }, false],
                [{ b: 5 }, true],
                [{ a: 5, b: 5 }, true],
                [{ a: '5', b: '5' }, true]
            ], done);
        });
    });

    it('uses ref as a valid value (empty key)', function (done) {

        var schema = Joi.object({
            a: Joi.ref(''),
            '': Joi.any()
        });

        schema.validate({ a: 5, '': 6 }, function (err, value) {

            expect(err).to.exist();
            expect(err.message).to.equal('child "a" fails because ["a" must be one of [ref:]]');

            Helper.validate(schema, [
                [{ a: 5 }, false],
                [{ '': 5 }, true],
                [{ a: 5, '': 5 }, true],
                [{ a: '5', '': '5' }, true]
            ], done);
        });
    });

    it('uses ref with nested keys as a valid value', function (done) {

        var schema = Joi.object({
            a: Joi.ref('b.c'),
            b: {
                c: Joi.any()
            }
        });

        schema.validate({ a: 5, b: { c: 6 } }, function (err, value) {

            expect(err).to.exist();
            expect(err.message).to.equal('child "a" fails because ["a" must be one of [ref:b.c]]');

            Helper.validate(schema, [
                [{ a: 5 }, false],
                [{ b: { c: 5 } }, true],
                [{ a: 5, b: 5 }, false],
                [{ a: '5', b: { c: '5' } }, true]
            ], done);
        });
    });

    it('uses ref with combined nested keys in sub child', function (done) {

        var ref = Joi.ref('b.c');
        expect(ref.root).to.equal('b');

        var schema = Joi.object({
            a: ref,
            b: {
                c: Joi.any()
            }
        });

        var input = { a: 5, b: { c: 5 } };
        schema.validate(input, function (err, value) {

            expect(err).to.not.exist();

            var parent = Joi.object({
                e: schema
            });

            parent.validate({ e: input }, function (err2, value2) {

                expect(err2).to.not.exist();
                done();
            });
        });
    });

    it('uses ref reach options', function (done) {

        var ref = Joi.ref('b/c', { separator: '/' });
        expect(ref.root).to.equal('b');

        var schema = Joi.object({
            a: ref,
            b: {
                c: Joi.any()
            }
        });

        schema.validate({ a: 5, b: { c: 5 } }, function (err, value) {

            expect(err).to.not.exist();
            done();
        });
    });

    it('ignores the order in which keys are defined', function (done) {

        var ab = Joi.object({
            a: {
                c: Joi.number()
            },
            b: Joi.ref('a.c')
        });

        ab.validate({ a: { c: '5' }, b: 5 }, function (err, value) {

            expect(err).to.not.exist();

            var ba = Joi.object({
                b: Joi.ref('a.c'),
                a: {
                    c: Joi.number()
                }
            });

            ba.validate({ a: { c: '5' }, b: 5 }, function (err2, value2) {

                expect(err2).to.not.exist();
                done();
            });
        });
    });

    it('uses ref as default value', function (done) {

        var schema = Joi.object({
            a: Joi.default(Joi.ref('b')),
            b: Joi.any()
        });

        schema.validate({ b: 6 }, function (err, value) {

            expect(err).to.not.exist();
            expect(value).to.deep.equal({ a: 6, b: 6 });
            done();
        });
    });

    it('uses ref as default value regardless of order', function (done) {

        var ab = Joi.object({
            a: Joi.default(Joi.ref('b')),
            b: Joi.number()
        });

        ab.validate({ b: '6' }, function (err, value) {

            expect(err).to.not.exist();
            expect(value).to.deep.equal({ a: 6, b: 6 });

            var ba = Joi.object({
                b: Joi.number(),
                a: Joi.default(Joi.ref('b'))
            });

            ba.validate({ b: '6' }, function (err2, value2) {

                expect(err2).to.not.exist();
                expect(value2).to.deep.equal({ a: 6, b: 6 });
                done();
            });
        });
    });

    it('ignores the order in which keys are defined with alternatives', function (done) {

        var a = { c: Joi.number() };
        var b = [Joi.ref('a.c'), Joi.ref('c')];
        var c = Joi.number();

        Helper.validate({ a: a, b: b, c: c }, [
            [{ a: {} }, true],
            [{ a: { c: '5' }, b: 5 }, true],
            [{ a: { c: '5' }, b: 6, c: '6' }, true],
            [{ a: { c: '5' }, b: 7, c: '6' }, false]
        ]);

        Helper.validate({ b: b, a: a, c: c }, [
            [{ a: {} }, true],
            [{ a: { c: '5' }, b: 5 }, true],
            [{ a: { c: '5' }, b: 6, c: '6' }, true],
            [{ a: { c: '5' }, b: 7, c: '6' }, false]
        ]);

        Helper.validate({ b: b, c: c, a: a }, [
            [{ a: {} }, true],
            [{ a: { c: '5' }, b: 5 }, true],
            [{ a: { c: '5' }, b: 6, c: '6' }, true],
            [{ a: { c: '5' }, b: 7, c: '6' }, false]
        ]);

        Helper.validate({ a: a, c: c, b: b }, [
            [{ a: {} }, true],
            [{ a: { c: '5' }, b: 5 }, true],
            [{ a: { c: '5' }, b: 6, c: '6' }, true],
            [{ a: { c: '5' }, b: 7, c: '6' }, false]
        ]);

        Helper.validate({ c: c, a: a, b: b }, [
            [{ a: {} }, true],
            [{ a: { c: '5' }, b: 5 }, true],
            [{ a: { c: '5' }, b: 6, c: '6' }, true],
            [{ a: { c: '5' }, b: 7, c: '6' }, false]
        ]);

        Helper.validate({ c: c, b: b, a: a }, [
            [{ a: {} }, true],
            [{ a: { c: '5' }, b: 5 }, true],
            [{ a: { c: '5' }, b: 6, c: '6' }, true],
            [{ a: { c: '5' }, b: 7, c: '6' }, false]
        ], done);
    });

    it('uses context as default value', function (done) {

        var schema = Joi.object({
            a: Joi.default(Joi.ref('$x')),
            b: Joi.any()
        });

        Joi.validate({ b: 6 }, schema, { context: { x: 22 } }, function (err, value) {

            expect(err).to.not.exist();
            expect(value).to.deep.equal({ a: 22, b: 6 });
            done();
        });
    });

    it('uses context as default value with custom prefix', function (done) {

        var schema = Joi.object({
            a: Joi.default(Joi.ref('%x', { contextPrefix: '%' })),
            b: Joi.any()
        });

        Joi.validate({ b: 6 }, schema, { context: { x: 22 } }, function (err, value) {

            expect(err).to.not.exist();
            expect(value).to.deep.equal({ a: 22, b: 6 });
            done();
        });
    });

    it('uses context as a valid value', function (done) {

        var schema = Joi.object({
            a: Joi.ref('$x'),
            b: Joi.any()
        });

        Joi.validate({ a: 5, b: 6 }, schema, { context: { x: 22 } }, function (err, value) {

            expect(err).to.exist();
            expect(err.message).to.equal('child "a" fails because ["a" must be one of [context:x]]');

            Helper.validateOptions(schema, [
                [{ a: 5 }, false],
                [{ a: 22 }, true],
                [{ b: 5 }, true],
                [{ a: 22, b: 5 }, true],
                [{ a: '22', b: '5' }, false]
            ], { context: { x: 22 } }, done);
        });
    });

    it('uses context in when condition', function (done) {

        var schema = {
            a: Joi.boolean().when('$x', { is: Joi.exist(), otherwise: Joi.forbidden() })
        };

        Helper.validate(schema, [
            [{}, true],
            [{ a: 'x' }, false],
            [{ a: true }, false],
            [{}, true, { context: {} }],
            [{ a: 'x' }, false, { context: {} }],
            [{ a: true }, false, { context: {} }],
            [{}, true, { context: { x: 1 } }],
            [{ a: 'x' }, false, { context: { x: 1 } }],
            [{ a: true }, true, { context: { x: 1 } }]
        ], done);
    });

    it('uses nested context in when condition', function (done) {

        var schema = {
            a: Joi.boolean().when('$x.y', { is: Joi.exist(), otherwise: Joi.forbidden() })
        };

        Helper.validate(schema, [
            [{}, true],
            [{ a: 'x' }, false],
            [{ a: true }, false],
            [{}, true, { context: {} }],
            [{ a: 'x' }, false, { context: {} }],
            [{ a: true }, false, { context: {} }],
            [{}, true, { context: { x: 1 } }],
            [{ a: 'x' }, false, { context: { x: 1 } }],
            [{ a: true }, false, { context: { x: 1 } }],
            [{}, true, { context: { x: {} } }],
            [{ a: 'x' }, false, { context: { x: {} } }],
            [{ a: true }, false, { context: { x: {} } }],
            [{}, true, { context: { x: { y: 1 } } }],
            [{ a: 'x' }, false, { context: { x: { y: 1 } } }],
            [{ a: true }, true, { context: { x: { y: 1 } } }]
        ], done);
    });

    it('describes schema with ref', function (done) {

        var desc = Joi.compile(Joi.ref('a.b')).describe();
        expect(Joi.isRef(desc.valids[0])).to.be.true();
        done();
    });

    describe('#create', function () {

        it('throws when key is missing', function (done) {

            expect(function () {

                Joi.ref(5);
            }).to.throw('Invalid reference key: 5');
            done();
        });

        it('finds root with default separator', function (done) {

            expect(Joi.ref('a.b.c').root).to.equal('a');
            done();
        });

        it('finds root with default separator and options', function (done) {

            expect(Joi.ref('a.b.c', {}).root).to.equal('a');
            done();
        });

        it('finds root with custom separator', function (done) {

            expect(Joi.ref('a+b+c', { separator: '+' }).root).to.equal('a');
            done();
        });
    });
});