/// <reference types="mocha" />
import { TestServer, Foobar } from './test.model';
import { ODataServer, NotImplementedError } from "../lib/index";
import { testFactory } from './server.spec'
import { Product, Category } from "./model/model";
import * as fs from "fs";
import * as path from "path";
import * as streamBuffers from "stream-buffers";

const { expect } = require("chai");
const extend = require("extend");
let categories = require("./model/categories");
let products = require("./model/products");

function createTestFactory(it) {
    return function createTest(testcase: string, server: typeof ODataServer, command: string, compare: any, body?: any) {
        it(`${testcase} (${command})`, () => {
            let test = command.split(" ");
            return server.execute(test.slice(1).join(" "), test[0], body).then((result) => {
                expect(result).to.deep.equal(compare);
            });
        });
    }
}

const createTest: any = createTestFactory(it);
createTest.only = createTestFactory(it.only);

describe("OData execute", () => {
    testFactory(createTest);

    it("should update foobar's foo property ", () => {
        return TestServer.execute("/EntitySet(1)/foo", "PUT", {
            foo: "PUT"
        }).then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });

            return TestServer.execute("/EntitySet(1)", "GET").then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 200,
                    body: {
                        "@odata.context": "http://localhost/$metadata#EntitySet/$entity",
                        "@odata.id": "http://localhost/EntitySet(1)",
                        "@odata.editLink": "http://localhost/EntitySet(1)",
                        id: 1,
                        foo: "PUT"
                    },
                    elementType: Foobar,
                    contentType: "application/json"
                });
            });
        });
    });

    it("should delete foobar's foo property ", () => {
        return TestServer.execute("/EntitySet(1)/foo", "DELETE").then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });

            return TestServer.execute("/EntitySet(1)", "GET").then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 200,
                    body: {
                        "@odata.context": "http://localhost/$metadata#EntitySet/$entity",
                        "@odata.id": "http://localhost/EntitySet(1)",
                        "@odata.editLink": "http://localhost/EntitySet(1)",
                        id: 1,
                        foo: null
                    },
                    elementType: Foobar,
                    contentType: "application/json"
                });
            });
        });
    });

    it("should delta update foobar's foo property ", () => {
        return TestServer.execute("/EntitySet(1)/foo", "PATCH", {
            foo: "bar"
        }).then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });

            return TestServer.execute("/EntitySet(1)", "GET").then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 200,
                    body: {
                        "@odata.context": "http://localhost/$metadata#EntitySet/$entity",
                        "@odata.id": "http://localhost/EntitySet(1)",
                        "@odata.editLink": "http://localhost/EntitySet(1)",
                        id: 1,
                        foo: "bar"
                    },
                    elementType: Foobar,
                    contentType: "application/json"
                });
            });
        });
    });

    it("should create product reference on category", () => {
        return TestServer.execute("/Categories('578f2baa12eaebabec4af28e')/Products('578f2b8c12eaebabec4af242')/$ref", "POST").then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });
            return TestServer.execute("/Products('578f2b8c12eaebabec4af242')/Category", "GET").then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 200,
                    body: extend({
                        "@odata.context": "http://localhost/$metadata#Categories/$entity"
                    }, categories.filter(category => category._id.toString() == "578f2baa12eaebabec4af28e").map(category => extend({
                        "@odata.id": `http://localhost/Categories('${category._id}')`
                    }, category))[0]
                    ),
                    elementType: Category,
                    contentType: "application/json"
                })
            });
        });
    });

    it("should delete product reference on category", () => {
        return TestServer.execute("/Categories('578f2baa12eaebabec4af28e')/Products('578f2b8c12eaebabec4af242')/$ref", "DELETE").then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });
            return TestServer.execute("/Products('578f2b8c12eaebabec4af242')/Category", "GET").then((result) => {
                throw new Error("Category reference should be deleted.");
            }, (err) => {
                expect(err.name).to.equal("ResourceNotFoundError");
            });;
        });
    });

    it("should update product reference on category", () => {
        return TestServer.execute("/Categories('578f2baa12eaebabec4af28d')/Products('578f2b8c12eaebabec4af242')/$ref", "PUT").then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });
            return TestServer.execute("/Products('578f2b8c12eaebabec4af242')/Category", "GET").then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 200,
                    body: extend({
                        "@odata.context": "http://localhost/$metadata#Categories/$entity"
                    }, categories.filter(category => category._id.toString() == "578f2baa12eaebabec4af28d").map(category => extend({
                        "@odata.id": `http://localhost/Categories('${category._id}')`
                    }, category))[0]
                    ),
                    elementType: Category,
                    contentType: "application/json"
                })
            });
        });
    });

    it("should delete product reference on category by ref id", () => {
        return TestServer.execute("/Categories('578f2baa12eaebabec4af28b')/Products/$ref?$id=http://localhost/Products('578f2b8c12eaebabec4af284')", "DELETE").then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });

            return TestServer.execute("/Products('578f2b8c12eaebabec4af284')/Category", "GET").then((result) => {
                throw new Error("Category reference should be deleted.");
            }, (err) => {
                expect(err.name).to.equal("ResourceNotFoundError");
            });
        });
    });

    it("should delta update product reference on category", () => {
        return TestServer.execute("/Categories('578f2baa12eaebabec4af28b')/Products('578f2b8c12eaebabec4af284')/$ref", "PATCH").then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });
            return TestServer.execute("/Products('578f2b8c12eaebabec4af284')/Category", "GET").then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 200,
                    body: extend({
                        "@odata.context": "http://localhost/$metadata#Categories/$entity"
                    }, categories.filter(category => category._id.toString() == "578f2baa12eaebabec4af28b").map(category => extend({
                        "@odata.id": `http://localhost/Categories('${category._id}')`
                    }, category))[0]
                    ),
                    elementType: Category,
                    contentType: "application/json"
                })
            });
        });
    });

    it("should create category reference on product", () => {
        return TestServer.execute("/Products('578f2b8c12eaebabec4af286')/Category/$ref", "POST", {
            "@odata.id": "http://localhost/Categories(categoryId='578f2baa12eaebabec4af28c')"
        }).then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });
            return TestServer.execute("/Products('578f2b8c12eaebabec4af286')/Category", "GET").then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 200,
                    body: extend({
                        "@odata.context": "http://localhost/$metadata#Categories/$entity"
                    }, categories.filter(category => category._id.toString() == "578f2baa12eaebabec4af28c").map(category => extend({
                        "@odata.id": `http://localhost/Categories('${category._id}')`
                    }, category))[0]
                    ),
                    elementType: Category,
                    contentType: "application/json"
                })
            });
        });
    });

    it("should delete category reference on product", () => {
        return TestServer.execute("/Products('578f2b8c12eaebabec4af286')/Category/$ref", "DELETE", {
            "@odata.id": "http://localhost/Categories('578f2baa12eaebabec4af28c')"
        }).then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });

            return TestServer.execute("/Products('578f2b8c12eaebabec4af286')/Category", "GET").then((result) => {
                throw new Error("Category reference should be deleted.");
            }, (err) => {
                expect(err.name).to.equal("ResourceNotFoundError");
            });
        });
    });

    it("should update category reference on product", () => {
        return TestServer.execute("/Products('578f2b8c12eaebabec4af286')/Category/$ref", "PUT", {
            "@odata.id": "http://localhost/Categories(categoryId='578f2baa12eaebabec4af289')"
        }).then((result) => {
            expect(result).to.deep.equal({
                statusCode: 204
            });
            return TestServer.execute("/Products('578f2b8c12eaebabec4af286')/Category", "GET").then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 200,
                    body: extend({
                        "@odata.context": "http://localhost/$metadata#Categories/$entity"
                    }, categories.filter(category => category._id.toString() == "578f2baa12eaebabec4af289").map(category => extend({
                        "@odata.id": `http://localhost/Categories('${category._id}')`
                    }, category))[0]
                    ),
                    elementType: Category,
                    contentType: "application/json"
                })
            });
        });
    });

    describe("Execute parameter is object", () => {
        it("should update foobar's foo property ", () => {
            let context: any = {};
            context.url = '/EntitySet(1)/foo';
            context.method = 'PUT';
            return TestServer.execute(context, { foo: "PUT" }).then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 204
                });
                let ctx: any = {};
                ctx.url = '/EntitySet(1)';
                ctx.method = 'GET';
                return TestServer.execute(ctx).then((result) => {
                    expect(result).to.deep.equal({
                        statusCode: 200,
                        body: {
                            "@odata.context": "http://localhost/$metadata#EntitySet/$entity",
                            "@odata.id": "http://localhost/EntitySet(1)",
                            "@odata.editLink": "http://localhost/EntitySet(1)",
                            id: 1,
                            foo: "PUT"
                        },
                        elementType: Foobar,
                        contentType: "application/json"
                    });
                });
            });
        });

        it("should delta update foobar's foo property ", () => {
            let context: any = {};
            context.url = '/EntitySet(1)/foo';
            context.method = 'PATCH';
            context.body = { foo: "bar" };
            return TestServer.execute(context).then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 204
                });
                let ctx: any = {};
                ctx.url = '/EntitySet(1)';
                ctx.method = 'GET';
                return TestServer.execute(ctx).then((result) => {
                    expect(result).to.deep.equal({
                        statusCode: 200,
                        body: {
                            "@odata.context": "http://localhost/$metadata#EntitySet/$entity",
                            "@odata.id": "http://localhost/EntitySet(1)",
                            "@odata.editLink": "http://localhost/EntitySet(1)",
                            id: 1,
                            foo: "bar"
                        },
                        elementType: Foobar,
                        contentType: "application/json"
                    });
                });
            });
        });
    });

    describe("Stream properties", () => {
        it("stream property POST", () => {
            let readableStrBuffer = new streamBuffers.ReadableStreamBuffer();
            readableStrBuffer.put('tmp.png');
            return TestServer.execute("/ImagesControllerEntitySet(1)/Data", "POST", readableStrBuffer).then((result) => {
                readableStrBuffer.stop();
                expect(result).to.deep.equal({
                    statusCode: 204
                });
            });
        });

        it("stream property GET", () => {
            let writableStrBuffer = new streamBuffers.WritableStreamBuffer();
            return TestServer.execute({
                url: "/ImagesControllerEntitySet(1)/Data",
                method: "GET",
                response: writableStrBuffer
            }).then(_ => {
                expect(writableStrBuffer.getContentsAsString()).to.equal("tmp.png");
            });
        });

        it("stream property with ODataStream POST", () => {
            return TestServer.execute("/ImagesControllerEntitySet(1)/Data2", "POST", fs.createReadStream(path.join(__dirname, "fixtures", "logo_jaystack.png"))).then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 204
                });
                expect(fs.readFileSync(path.join(__dirname, "fixtures", "logo_jaystack.png"))).to.deep.equal(fs.readFileSync(path.join(__dirname, "fixtures", "tmp.png")));
                if (fs.existsSync(path.join(__dirname, "fixtures", "tmp.png"))) {
                    fs.unlinkSync(path.join(__dirname, "fixtures", "tmp.png"));
                }
            });
        });

        it("stream property with ODataStream GET", (done) => {
            let tmp = fs.createWriteStream(path.join(__dirname, "fixtures", "tmp.png"))
            tmp.on("open", _ => {
                TestServer.execute({
                    url: "/ImagesControllerEntitySet(1)/Data2",
                    method: "GET",
                    response: tmp
                }).then(_ => {
                    expect(fs.readFileSync(path.join(__dirname, "fixtures", "tmp.png"))).to.deep.equal(fs.readFileSync(path.join(__dirname, "fixtures", "logo_jaystack.png")));
                    try {
                        if (fs.existsSync(path.join(__dirname, "fixtures", "tmp.png"))) {
                            fs.unlinkSync(path.join(__dirname, "fixtures", "tmp.png"));
                        }
                        done();
                    } catch (err) {
                        done(err);
                    }
                }, done);
            }).on("error", done);
        });

        it("should return 204 after POST Data2 using generator function that yields stream", () => {
            return TestServer.execute("/Images2ControllerEntitySet(1)/Data2", "POST", fs.createReadStream(path.join(__dirname, "fixtures", "logo_jaystack.png"))).then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 204
                });
                expect(fs.readFileSync(path.join(__dirname, "fixtures", "logo_jaystack.png"))).to.deep.equal(fs.readFileSync(path.join(__dirname, "fixtures", "tmp.png")));
                if (fs.existsSync(path.join(__dirname, "fixtures", "tmp.png"))) {
                    fs.unlinkSync(path.join(__dirname, "fixtures", "tmp.png"));
                }
            });
        });

        it("should return 200 after GET Data2 using generator function that yields stream", (done) => {
            let tmp = fs.createWriteStream(path.join(__dirname, "fixtures", "tmp.png"))
            tmp.on("open", _ => {
                TestServer.execute({
                    url: "/Images2ControllerEntitySet(1)/Data2",
                    method: "GET",
                    response: tmp
                }).then(_ => {
                    expect(fs.readFileSync(path.join(__dirname, "fixtures", "tmp.png"))).to.deep.equal(fs.readFileSync(path.join(__dirname, "fixtures", "logo_jaystack.png")));
                    try {
                        if (fs.existsSync(path.join(__dirname, "fixtures", "tmp.png"))) {
                            fs.unlinkSync(path.join(__dirname, "fixtures", "tmp.png"));
                        }
                        done();
                    } catch (err) {
                        done(err);
                    }
                }, done);
            }).on("error", done);
        });
    });

    describe("Media entity", () => {
        it("media entity POST", () => {
            let readableStrBuffer = new streamBuffers.ReadableStreamBuffer();
            readableStrBuffer.put('tmp.mp3');
            return TestServer.execute("/MusicControllerEntitySet(1)/$value", "POST", readableStrBuffer).then((result) => {
                expect(result).to.deep.equal({
                    statusCode: 204
                });
            });
        });
    });

    describe("Not implemented error", () => {
        it("should return not implemented error", () => {
            return TestServer.execute("/EntitySet", "GET").then(() => {
                try {
                    throw new NotImplementedError();
                } catch (err) {
                    expect(err.message).to.equal("Not implemented.");
                }
            });
        });
    });

    describe("Non existent entity", () => {
        it('should return cannot read property node error', () => {
            return TestServer.execute("/NonExistent", "GET")
            .then((result) => {})
            .catch(err => {
                expect(err.message).to.equal("Cannot read property 'node' of undefined");
            });
        });
    });
});