/**
 * Tests basic syntax check of $_externalDataSources aggregate command option.
 */
(function() {
"use strict";

// Runs tests on a standalone mongod.
const conn = MongoRunner.runMongod({setParameter: {enableComputeMode: true}});
const db = conn.getDB(jsTestName());

const kDefaultUrlPrefix = (() => {
    return assert.commandWorked(db.hostInfo()).os.type == "Windows" ? "file:////./pipe/"
                                                                    : "file:///tmp/";
})();

// Empty option
assert.throwsWithCode(() => {
    db.coll.aggregate([{$match: {a: 1}}], {$_externalDataSources: []});
}, 7039002);

// No external file metadata
assert.throwsWithCode(() => {
    db.coll.aggregate([{$match: {a: 1}}],
                      {$_externalDataSources: [{collName: "coll", dataSources: []}]});
}, 7039001);

// No file type
assert.throwsWithCode(() => {
    db.coll.aggregate([{$match: {a: 1}}], {
        $_externalDataSources: [{
            collName: "coll",
            dataSources: [{url: kDefaultUrlPrefix + "name1", storageType: "pipe"}]
        }]
    });
}, 40414);

// Unknown file type
assert.throwsWithCode(() => {
    db.coll.aggregate([{$match: {a: 1}}], {
        $_externalDataSources: [{
            collName: "coll",
            dataSources:
                [{url: kDefaultUrlPrefix + "name1", storageType: "pipe", fileType: "unknown"}]
        }]
    });
}, ErrorCodes.BadValue);

// No storage type
assert.throwsWithCode(() => {
    db.coll.aggregate([{$match: {a: 1}}], {
        $_externalDataSources: [
            {collName: "coll", dataSources: [{url: kDefaultUrlPrefix + "name1", fileType: "bson"}]}
        ]
    });
}, 40414);

// Unknown storage type
assert.throwsWithCode(() => {
    db.coll.aggregate([{$match: {a: 1}}], {
        $_externalDataSources: [{
            collName: "coll",
            dataSources:
                [{url: kDefaultUrlPrefix + "name1", storageType: "unknown", fileType: "bson"}]
        }]
    });
}, ErrorCodes.BadValue);

// No url
assert.throwsWithCode(() => {
    db.coll.aggregate([{$match: {a: 1}}], {
        $_externalDataSources:
            [{collName: "coll", dataSources: [{storageType: "pipe", fileType: "bson"}]}]
    });
}, 40414);

// Invalid url
assert.throwsWithCode(() => {
    db.coll.aggregate([{$match: {a: 1}}], {
        $_externalDataSources: [{
            collName: "coll",
            dataSources: [{url: "http:///name1", storageType: "pipe", fileType: "bson"}]
        }]
    });
}, 6968500);

assert.throwsWithCode(() => {
    db.unknown.aggregate([{$match: {a: 1}}], {
        $_externalDataSources: [{
            collName: "coll",
            dataSources: [{url: kDefaultUrlPrefix + "name1", storageType: "pipe", fileType: "bson"}]
        }]
    });
}, 7039003);

assert.throwsWithCode(() => {
    db.coll.aggregate(
        [
            {$match: {a: 1}},
            {$lookup: {from: "unknown2", localField: "a", foreignField: "b", as: "out"}}
        ],
        {
            $_externalDataSources: [{
                collName: "coll",
                dataSources:
                    [{url: kDefaultUrlPrefix + "name1", storageType: "pipe", fileType: "bson"}]
            }]
        });
}, 7039004);

assert.doesNotThrow(() => {
    db.coll.aggregate([{$match: {a: 1}}], {
        $_externalDataSources: [{
            collName: "coll",
            dataSources: [{url: kDefaultUrlPrefix + "name1", storageType: "pipe", fileType: "bson"}]
        }]
    });
});

MongoRunner.stopMongod(conn);
})();