const {
    OlmMachine,
    UserId,
    DeviceId,
    DeviceKeyId,
    RoomId,
    DeviceLists,
    RequestType,
    KeysUploadRequest,
    KeysQueryRequest,
    KeysClaimRequest,
    EncryptionSettings,
    DecryptedRoomEvent,
    VerificationState,
    CrossSigningStatus,
    MaybeSignature,
    StoreType,
    ShieldColor,
} = require("../");
const path = require("path");
const os = require("os");
const fs = require("fs/promises");

describe("StoreType", () => {
    test("has the correct variant values", () => {
        expect(StoreType.Sled).toStrictEqual(0);
        expect(StoreType.Sqlite).toStrictEqual(1);
    });
});

describe(OlmMachine.name, () => {
    test("cannot be instantiated with the constructor", () => {
        expect(() => {
            new OlmMachine();
        }).toThrow();
    });

    test("can be instantiated with the async initializer", async () => {
        expect(await OlmMachine.initialize(new UserId("@foo:bar.org"), new DeviceId("baz"))).toBeInstanceOf(OlmMachine);
    });

    describe("can be instantiated with a store", () => {
        for (const [store_type, store_name] of [
            [StoreType.Sled, "sled"],
            [StoreType.Sqlite, "sqlite"],
            [null, "default"],
        ]) {
            test(`with no passphrase (store: ${store_name})`, async () => {
                const temp_directory = await fs.mkdtemp(path.join(os.tmpdir(), "matrix-sdk-crypto--"));

                expect(
                    await OlmMachine.initialize(
                        new UserId("@foo:bar.org"),
                        new DeviceId("baz"),
                        temp_directory,
                        null,
                        store_type,
                    ),
                ).toBeInstanceOf(OlmMachine);
            });

            test(`with a passphrase (store: ${store_name})`, async () => {
                const temp_directory = await fs.mkdtemp(path.join(os.tmpdir(), "matrix-sdk-crypto--"));

                expect(
                    await OlmMachine.initialize(
                        new UserId("@foo:bar.org"),
                        new DeviceId("baz"),
                        temp_directory,
                        "hello",
                        store_type,
                    ),
                ).toBeInstanceOf(OlmMachine);
            });
        }
    });

    const user = new UserId("@alice:example.org");
    const device = new DeviceId("foobar");
    const room = new RoomId("!baz:matrix.org");

    function machine(new_user, new_device) {
        return OlmMachine.initialize(new_user || user, new_device || device);
    }

    test("can drop/close, and then re-open", async () => {
        const temp_directory = await fs.mkdtemp(path.join(os.tmpdir(), "matrix-sdk-crypto--"));

        let m1 = await OlmMachine.initialize(
            new UserId("@test:bar.org"),
            new DeviceId("device"),
            temp_directory,
            "hello",
        );
        m1.close();

        let m2 = await OlmMachine.initialize(
            new UserId("@test:bar.org"),
            new DeviceId("device"),
            temp_directory,
            "hello",
        );
        m2.close();
    });

    test("can read user ID", async () => {
        expect((await machine()).userId.toString()).toStrictEqual(user.toString());
    });

    test("can read device ID", async () => {
        expect((await machine()).deviceId.toString()).toStrictEqual(device.toString());
    });

    test("can read identity keys", async () => {
        const identityKeys = (await machine()).identityKeys;

        expect(identityKeys.ed25519.toBase64()).toMatch(/^[A-Za-z0-9+/]+$/);
        expect(identityKeys.curve25519.toBase64()).toMatch(/^[A-Za-z0-9+/]+$/);
    });

    test("can receive sync changes", async () => {
        const m = await machine();
        const toDeviceEvents = JSON.stringify([]);
        const changedDevices = new DeviceLists();
        const oneTimeKeyCounts = {};
        const unusedFallbackKeys = [];

        const receiveSyncChanges = JSON.parse(
            await m.receiveSyncChanges(toDeviceEvents, changedDevices, oneTimeKeyCounts, unusedFallbackKeys),
        );

        expect(receiveSyncChanges).toEqual([]);
    });

    test("can get the outgoing requests that need to be send out", async () => {
        const m = await machine();
        const toDeviceEvents = JSON.stringify([]);
        const changedDevices = new DeviceLists();
        const oneTimeKeyCounts = {};
        const unusedFallbackKeys = [];

        const receiveSyncChanges = JSON.parse(
            await m.receiveSyncChanges(toDeviceEvents, changedDevices, oneTimeKeyCounts, unusedFallbackKeys),
        );

        expect(receiveSyncChanges).toEqual([]);

        const outgoingRequests = await m.outgoingRequests();

        expect(outgoingRequests).toHaveLength(2);

        {
            expect(outgoingRequests[0]).toBeInstanceOf(KeysUploadRequest);
            expect(outgoingRequests[0].id).toBeDefined();
            expect(outgoingRequests[0].type).toStrictEqual(RequestType.KeysUpload);

            const body = JSON.parse(outgoingRequests[0].body);
            expect(body.device_keys).toBeDefined();
            expect(body.one_time_keys).toBeDefined();
        }

        {
            expect(outgoingRequests[1]).toBeInstanceOf(KeysQueryRequest);
            expect(outgoingRequests[1].id).toBeDefined();
            expect(outgoingRequests[1].type).toStrictEqual(RequestType.KeysQuery);

            const body = JSON.parse(outgoingRequests[1].body);
            expect(body.timeout).toBeDefined();
            expect(body.device_keys).toBeDefined();
            expect(body.token).toBeDefined();
        }
    });

    describe("setup workflow to mark requests as sent", () => {
        let m;
        let ougoingRequests;

        beforeAll(async () => {
            m = await machine(new UserId("@alice:example.org"), new DeviceId("DEVICEID"));

            const toDeviceEvents = JSON.stringify([]);
            const changedDevices = new DeviceLists();
            const oneTimeKeyCounts = {};
            const unusedFallbackKeys = [];

            await m.receiveSyncChanges(toDeviceEvents, changedDevices, oneTimeKeyCounts, unusedFallbackKeys);
            outgoingRequests = await m.outgoingRequests();

            expect(outgoingRequests).toHaveLength(2);
        });

        test("can mark requests as sent", async () => {
            {
                const request = outgoingRequests[0];
                expect(request).toBeInstanceOf(KeysUploadRequest);

                // https://spec.matrix.org/v1.2/client-server-api/#post_matrixclientv3keysupload
                const hypothetical_response = JSON.stringify({
                    one_time_key_counts: {
                        curve25519: 10,
                        signed_curve25519: 20,
                    },
                });
                const marked = await m.markRequestAsSent(request.id, request.type, hypothetical_response);
                expect(marked).toStrictEqual(true);
            }

            {
                const request = outgoingRequests[1];
                expect(request).toBeInstanceOf(KeysQueryRequest);

                // https://spec.matrix.org/v1.2/client-server-api/#post_matrixclientv3keysquery
                const hypothetical_response = JSON.stringify({
                    device_keys: {
                        "@alice:example.org": {
                            JLAFKJWSCS: {
                                algorithms: ["m.olm.v1.curve25519-aes-sha2", "m.megolm.v1.aes-sha2"],
                                device_id: "JLAFKJWSCS",
                                keys: {
                                    "curve25519:JLAFKJWSCS": "wjLpTLRqbqBzLs63aYaEv2Boi6cFEbbM/sSRQ2oAKk4",
                                    "ed25519:JLAFKJWSCS": "nE6W2fCblxDcOFmeEtCHNl8/l8bXcu7GKyAswA4r3mM",
                                },
                                signatures: {
                                    "@alice:example.org": {
                                        "ed25519:JLAFKJWSCS":
                                            "m53Wkbh2HXkc3vFApZvCrfXcX3AI51GsDHustMhKwlv3TuOJMj4wistcOTM8q2+e/Ro7rWFUb9ZfnNbwptSUBA",
                                    },
                                },
                                unsigned: {
                                    device_display_name: "Alice's mobile phone",
                                },
                                user_id: "@alice:example.org",
                            },
                        },
                    },
                    failures: {},
                });
                const marked = await m.markRequestAsSent(request.id, request.type, hypothetical_response);
                expect(marked).toStrictEqual(true);
            }
        });
    });

    describe("setup workflow to encrypt/decrypt events", () => {
        let m;
        const user = new UserId("@alice:example.org");
        const device = new DeviceId("JLAFKJWSCS");
        const room = new RoomId("!test:localhost");

        beforeAll(async () => {
            m = await machine(user, device);
        });

        test("can pass keysquery and keysclaim requests directly", async () => {
            {
                // derived from https://github.com/matrix-org/matrix-rust-sdk/blob/7f49618d350fab66b7e1dc4eaf64ec25ceafd658/benchmarks/benches/crypto_bench/keys_query.json
                const hypothetical_response = JSON.stringify({
                    device_keys: {
                        "@example:localhost": {
                            AFGUOBTZWM: {
                                algorithms: ["m.olm.v1.curve25519-aes-sha2", "m.megolm.v1.aes-sha2"],
                                device_id: "AFGUOBTZWM",
                                keys: {
                                    "curve25519:AFGUOBTZWM": "boYjDpaC+7NkECQEeMh5dC+I1+AfriX0VXG2UV7EUQo",
                                    "ed25519:AFGUOBTZWM": "NayrMQ33ObqMRqz6R9GosmHdT6HQ6b/RX/3QlZ2yiec",
                                },
                                signatures: {
                                    "@example:localhost": {
                                        "ed25519:AFGUOBTZWM":
                                            "RoSWvru1jj6fs2arnTedWsyIyBmKHMdOu7r9gDi0BZ61h9SbCK2zLXzuJ9ZFLao2VvA0yEd7CASCmDHDLYpXCA",
                                    },
                                },
                                user_id: "@example:localhost",
                                unsigned: {
                                    device_display_name: "rust-sdk",
                                },
                            },
                        },
                    },
                    failures: {},
                    master_keys: {
                        "@example:localhost": {
                            user_id: "@example:localhost",
                            usage: ["master"],
                            keys: {
                                "ed25519:n2lpJGx0LiKnuNE1IucZP3QExrD4SeRP0veBHPe3XUU":
                                    "n2lpJGx0LiKnuNE1IucZP3QExrD4SeRP0veBHPe3XUU",
                            },
                            signatures: {
                                "@example:localhost": {
                                    "ed25519:TCSJXPWGVS":
                                        "+j9G3L41I1fe0++wwusTTQvbboYW0yDtRWUEujhwZz4MAltjLSfJvY0hxhnz+wHHmuEXvQDen39XOpr1p29sAg",
                                },
                            },
                        },
                    },
                    self_signing_keys: {
                        "@example:localhost": {
                            user_id: "@example:localhost",
                            usage: ["self_signing"],
                            keys: {
                                "ed25519:kQXOuy639Yt47mvNTdrIluoC6DMvfbZLYbxAmwiDyhI":
                                    "kQXOuy639Yt47mvNTdrIluoC6DMvfbZLYbxAmwiDyhI",
                            },
                            signatures: {
                                "@example:localhost": {
                                    "ed25519:n2lpJGx0LiKnuNE1IucZP3QExrD4SeRP0veBHPe3XUU":
                                        "q32ifix/qyRpvmegw2BEJklwoBCAJldDNkcX+fp+lBA4Rpyqtycxge6BA4hcJdxYsy3oV0IHRuugS8rJMMFyAA",
                                },
                            },
                        },
                    },
                    user_signing_keys: {
                        "@example:localhost": {
                            user_id: "@example:localhost",
                            usage: ["user_signing"],
                            keys: {
                                "ed25519:g4ED07Fnqf3GzVWNN1pZ0IFrPQVdqQf+PYoJNH4eE0s":
                                    "g4ED07Fnqf3GzVWNN1pZ0IFrPQVdqQf+PYoJNH4eE0s",
                            },
                            signatures: {
                                "@example:localhost": {
                                    "ed25519:n2lpJGx0LiKnuNE1IucZP3QExrD4SeRP0veBHPe3XUU":
                                        "nKQu8alQKDefNbZz9luYPcNj+Z+ouQSot4fU/A23ELl1xrI06QVBku/SmDx0sIW1ytso0Cqwy1a+3PzCa1XABg",
                                },
                            },
                        },
                    },
                });
                const marked = await m.markRequestAsSent("foo", RequestType.KeysQuery, hypothetical_response);
            }

            {
                // derived from https://github.com/matrix-org/matrix-rust-sdk/blob/7f49618d350fab66b7e1dc4eaf64ec25ceafd658/benchmarks/benches/crypto_bench/keys_claim.json
                const hypothetical_response = JSON.stringify({
                    one_time_keys: {
                        "@example:localhost": {
                            AFGUOBTZWM: {
                                "signed_curve25519:AAAABQ": {
                                    key: "9IGouMnkB6c6HOd4xUsNv4i3Dulb4IS96TzDordzOws",
                                    signatures: {
                                        "@example:localhost": {
                                            "ed25519:AFGUOBTZWM":
                                                "2bvUbbmJegrV0eVP/vcJKuIWC3kud+V8+C0dZtg4dVovOSJdTP/iF36tQn2bh5+rb9xLlSeztXBdhy4c+LiOAg",
                                        },
                                    },
                                },
                            },
                        },
                    },
                    failures: {},
                });
                const marked = await m.markRequestAsSent("bar", RequestType.KeysClaim, hypothetical_response);
            }
        });

        test("can share a room key", async () => {
            const other_users = [new UserId("@example:localhost")];

            const requests = JSON.parse(await m.shareRoomKey(room, other_users, new EncryptionSettings()));

            expect(requests).toHaveLength(1);
            expect(requests[0].event_type).toBeDefined();
            expect(requests[0].txn_id).toBeDefined();
            expect(requests[0].messages).toBeDefined();
            expect(requests[0].messages["@example:localhost"]).toBeDefined();
        });

        let encrypted;

        test("can encrypt an event", async () => {
            encrypted = JSON.parse(
                await m.encryptRoomEvent(
                    room,
                    "m.room.message",
                    JSON.stringify({
                        hello: "world",
                    }),
                ),
            );

            expect(encrypted.algorithm).toBeDefined();
            expect(encrypted.ciphertext).toBeDefined();
            expect(encrypted.sender_key).toBeDefined();
            expect(encrypted.device_id).toStrictEqual(device.toString());
            expect(encrypted.session_id).toBeDefined();
        });

        test("can decrypt an event", async () => {
            const decrypted = await m.decryptRoomEvent(
                JSON.stringify({
                    type: "m.room.encrypted",
                    event_id: "$xxxxx:example.org",
                    origin_server_ts: Date.now(),
                    sender: user.toString(),
                    content: encrypted,
                    unsigned: {
                        age: 1234,
                    },
                }),
                room,
            );

            expect(decrypted).toBeInstanceOf(DecryptedRoomEvent);

            const event = JSON.parse(decrypted.event);
            expect(event.content.hello).toStrictEqual("world");

            expect(decrypted.sender.toString()).toStrictEqual(user.toString());
            expect(decrypted.senderDevice.toString()).toStrictEqual(device.toString());
            expect(decrypted.senderCurve25519Key).toBeDefined();
            expect(decrypted.senderClaimedEd25519Key).toBeDefined();
            expect(decrypted.forwardingCurve25519KeyChain).toHaveLength(0);
            expect(decrypted.shieldState(true).color).toStrictEqual(ShieldColor.Red);
            expect(decrypted.shieldState(false).color).toStrictEqual(ShieldColor.Red);
        });
    });

    test("can update tracked users", async () => {
        const m = await machine();

        expect(await m.updateTrackedUsers([user])).toStrictEqual(undefined);
    });

    test("can read cross-signing status", async () => {
        const m = await machine();
        const crossSigningStatus = await m.crossSigningStatus();

        expect(crossSigningStatus).toBeInstanceOf(CrossSigningStatus);
        expect(crossSigningStatus.hasMaster).toStrictEqual(false);
        expect(crossSigningStatus.hasSelfSigning).toStrictEqual(false);
        expect(crossSigningStatus.hasUserSigning).toStrictEqual(false);
    });

    test("can sign a message", async () => {
        const m = await machine();
        const signatures = await m.sign("foo");

        expect(signatures.isEmpty).toStrictEqual(false);
        expect(signatures.count).toStrictEqual(1n);

        let base64;

        // `get`
        {
            const signature = signatures.get(user);

            expect(signature).toMatchObject({
                "ed25519:foobar": expect.any(MaybeSignature),
            });
            expect(signature["ed25519:foobar"].isValid).toStrictEqual(true);
            expect(signature["ed25519:foobar"].isInvalid).toStrictEqual(false);
            expect(signature["ed25519:foobar"].invalidSignatureSource).toBeNull();

            base64 = signature["ed25519:foobar"].signature.toBase64();

            expect(base64).toMatch(/^[A-Za-z0-9\+/]+$/);
            expect(signature["ed25519:foobar"].signature.ed25519.toBase64()).toStrictEqual(base64);
        }

        // `getSignature`
        {
            const signature = signatures.getSignature(user, new DeviceKeyId("ed25519:foobar"));
            expect(signature.toBase64()).toStrictEqual(base64);
        }

        // Unknown signatures.
        {
            expect(signatures.get(new UserId("@hello:example.org"))).toBeNull();
            expect(signatures.getSignature(user, new DeviceKeyId("world:foobar"))).toBeNull();
        }
    });
});