///<reference path='../node_modules/@types/jasmine/index.d.ts'/>
import { SimpleChange, Component } from '@angular/core';
import { DataTable, PageEvent, SortEvent } from './DataTable';
import { TestBed, ComponentFixture } from '@angular/core/testing';
import { By } from '@angular/platform-browser';
import { switchMap } from 'rxjs/operators';
import * as _ from 'lodash';

@Component({
    template: `<table [svData]="[]"></table>`
})
class TestComponent {
}

describe("DataTable directive tests", () => {
    let datatable: DataTable;
    let fixture: ComponentFixture<TestComponent>;

    beforeEach(() => {
        TestBed.configureTestingModule({
            declarations: [DataTable, TestComponent]
        });
        fixture = TestBed.createComponent(TestComponent);
        datatable = fixture.debugElement.query(By.directive(DataTable)).injector.get(DataTable) as DataTable;

        datatable.inputData = [
            { id: 3, name: 'banana' },
            { id: 1, name: 'Duck' },
            { id: 2, name: 'ącki' },
            { id: 5, name: 'Ðrone' },
            { id: 4, name: 'Ananas' }
        ];
        datatable.ngOnChanges({ inputData: new SimpleChange(null, datatable.inputData, false) });
    });

    describe("initializing", () => {

        it("data should be empty array if inputData is undefined or null", () => {
            datatable.ngOnChanges({ inputData: new SimpleChange(null, null, false) });
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([]);
        });

        it("data should be equal to inputData", () => {
            datatable.ngDoCheck();
            expect(datatable.data).toEqual(datatable.inputData);
        });

        it("data should be 2 first items", () => {
            datatable.rowsOnPage = 2;
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 3, name: 'banana' }, { id: 1, name: 'Duck' }]);
        });

        it("data should be 3. and 4. items", () => {
            datatable.rowsOnPage = 2;
            datatable.activePage = 2;
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 2, name: 'ącki' }, { id: 5, name: 'Ðrone' }]);
        });

        it("shouldn't recalculate data when no changes", () => {
            datatable.ngDoCheck();
            let data = datatable.data;
            datatable.ngOnChanges({});
            datatable.ngDoCheck();
            expect(datatable.data).toBe(data);
        });
    });

    describe("pagination", () => {

        beforeEach(() => {
            datatable.rowsOnPage = 2;
            datatable.ngDoCheck();
        });

        it("should return current page settings", () => {
            expect(datatable.getPage()).toEqual({ activePage: 1, rowsOnPage: 2, dataLength: 5 });
        });

        it("data should be 3. and 4. items when page change", () => {
            datatable.setPage(2, 2);
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 2, name: 'ącki' }, { id: 5, name: 'Ðrone' }]);
        });

        it("data should be three first items when page change", () => {
            datatable.setPage(1, 3);
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 3, name: 'banana' }, { id: 1, name: 'Duck' }, { id: 2, name: 'ącki' }]);
        });

        it("data should be two last items when page change", () => {
            datatable.setPage(2, 3);
            datatable.setPage(2, 3);
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 5, name: 'Ðrone' }, { id: 4, name: 'Ananas' }]);
        });

        it("should change rowsOnPage when svRowsOnPage changed", (done) => {
            datatable.rowsOnPage = 2;
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 3, name: 'banana' }, { id: 1, name: 'Duck' }]);

            datatable.onPageChange.subscribe((pageOptions: PageEvent) => {
                expect(pageOptions.rowsOnPage).toEqual(3);
                done();
            });

            datatable.rowsOnPage = 3;
            datatable.ngOnChanges({ rowsOnPage: new SimpleChange(2, 3, false) });
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 3, name: 'banana' }, { id: 1, name: 'Duck' }, { id: 2, name: 'ącki' }]);


        });
    });

    describe("sorting", () => {

        it("id should return current sort setting", () => {
            datatable.setSort("id", "desc");
            expect(datatable.getSort()).toEqual({ sortBy: "id", sortOrder: "desc" });
        });

        it("should sort data after sorting input value changed", () => {
            datatable.ngDoCheck();
            datatable.sortBy = "id";
            datatable.sortOrder = "asc";
            datatable.ngOnChanges({
                sortBy: new SimpleChange(null, datatable.sortBy, true),
                sortOrder: new SimpleChange(null, datatable.sortOrder, true)
            });
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([
                { id: 1, name: 'Duck' },
                { id: 2, name: 'ącki' },
                { id: 3, name: 'banana' },
                { id: 4, name: 'Ananas' },
                { id: 5, name: 'Ðrone' }
            ])
        });

        it("should fire onSortChange event after sorting input value changed", (done) => {
            datatable.onSortChange.subscribe((event: SortEvent) => {
                expect(event.sortBy).toEqual("id");
                expect(event.sortOrder).toEqual("desc");
                done();
            });
            datatable.ngDoCheck();
            datatable.sortBy = "id";
            datatable.sortOrder = "desc";
            datatable.ngOnChanges({
                sortBy: new SimpleChange(null, datatable.sortBy, false),
                sortOrder: new SimpleChange(null, datatable.sortOrder, false)
            });
            datatable.ngDoCheck();

        });

        it("should set sortOrder to 'asc' if not provided", (done) => {
            datatable.onSortChange.subscribe((event: SortEvent) => {
                expect(event.sortBy).toEqual("id");
                expect(event.sortOrder).toEqual("asc");
                done();
            });
            datatable.ngDoCheck();
            datatable.sortBy = "id";
            datatable.ngOnChanges({
                sortBy: new SimpleChange(null, datatable.sortBy, false)
            });
            datatable.ngDoCheck();
            expect(datatable.sortOrder).toEqual("asc");
        });

        it("should set sortOrder to 'asc' if provided something else than 'asc' or 'desc'", (done) => {
            datatable.onSortChange.subscribe((event: SortEvent) => {
                expect(event.sortBy).toEqual("id");
                expect(event.sortOrder).toEqual("asc");
                done();
            });
            datatable.ngDoCheck();
            datatable.sortBy = "id";
            datatable.sortOrder = "bulb";
            datatable.ngOnChanges({
                sortBy: new SimpleChange(null, datatable.sortBy, false),
                sortOrder: new SimpleChange(null, datatable.sortOrder, false)
            });
            datatable.ngDoCheck();
            expect(datatable.sortOrder).toEqual("asc");
            expect(datatable.data).toEqual([
                { id: 1, name: 'Duck' },
                { id: 2, name: 'ącki' },
                { id: 3, name: 'banana' },
                { id: 4, name: 'Ananas' },
                { id: 5, name: 'Ðrone' }
            ]);
        });

        it("shouldn't change order when only order provided", (done) => {
            done();
            datatable.onSortChange.subscribe(() => {
                done.fail("OnSortChange shouldn't been fired");
            });
            datatable.ngDoCheck();
            datatable.sortOrder = "desc";
            datatable.ngOnChanges({ sortOrder: new SimpleChange(null, datatable.sortOrder, false) });
            datatable.ngDoCheck();
            expect(datatable.data).toEqual(datatable.inputData);
        });

        it("should call output event when sorting changed", (done) => {
            datatable.ngDoCheck();
            datatable.sortByChange.pipe(switchMap((sortBy: string) => {
                expect(sortBy).toEqual("id");
                return datatable.sortOrderChange;
            })).subscribe((sortOrder: string) => {
                expect(sortOrder).toEqual("desc");
                done();
            });

            datatable.setSort("id", "desc");
        });

        it("shouldn't call output event when sortOrder fixed", (done) => {
            datatable.ngDoCheck();
            datatable.sortOrderChange.subscribe(() => {
                done.fail("Shouldn't call sortOrderChange");
            });
            done();
            datatable.sortOrder = "bulb";
            datatable.ngOnChanges({ sortOrder: new SimpleChange(null, datatable.sortOrder, false) });
            datatable.ngDoCheck();
        });
        // Wywołanie outputa gdy zmiana z innej strony

        it("shouldn't refresh data when set page with same settings", () => {
            datatable.setSort("name", "asc");
            datatable.ngDoCheck();
            let data = datatable.data;
            datatable.setSort("name", "asc");
            datatable.ngDoCheck();
            expect(datatable.data).toBe(data);
        });

        it("should sort data ascending by name", () => {
            datatable.setSort("name", "asc");
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([
                { id: 4, name: 'Ananas' },
                { id: 3, name: 'banana' },
                { id: 1, name: 'Duck' },
                { id: 5, name: 'Ðrone' },
                { id: 2, name: 'ącki' }
            ])
        });

        it("should sort data descending by id", () => {
            datatable.setSort("id", "desc");
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([
                { id: 5, name: 'Ðrone' },
                { id: 4, name: 'Ananas' },
                { id: 3, name: 'banana' },
                { id: 2, name: 'ącki' },
                { id: 1, name: 'Duck' }
            ])
        });

        it("should sort data by two values", () => {
            let newData = [
                { name: 'Claire', age: 9 },
                { name: 'Anna', age: 34 },
                { name: 'Claire', age: 16 },
                { name: 'Claire', age: 7 },
                { name: 'Anna', age: 12 }
            ];
            datatable.ngOnChanges({ inputData: new SimpleChange(datatable.inputData, newData, false) });
            datatable.setSort(['name', 'age'], "asc");
            datatable.ngDoCheck();

            expect(datatable.data).toEqual([
                { name: 'Anna', age: 12 },
                { name: 'Anna', age: 34 },
                { name: 'Claire', age: 7 },
                { name: 'Claire', age: 9 },
                { name: 'Claire', age: 16 }
            ]);
        });

        it("should sort data by child property value", () => {
            let newData = [
                { name: 'Claire', city: { zip: '51111' } },
                { name: 'Anna' },
                { name: 'Claire', city: { zip: '41111' } },
                { name: 'Donald', city: 2 },
                { name: 'Claire', city: { zip: '11111' } },
                { name: 'Anna', city: { zip: '21111' } }
            ];
            datatable.ngOnChanges({ inputData: new SimpleChange(datatable.inputData, newData, false) });
            datatable.setSort("city.zip", "asc");
            datatable.ngDoCheck();

            expect(datatable.data).toEqual([
                { name: 'Claire', city: { zip: '11111' } },
                { name: 'Anna', city: { zip: '21111' } },
                { name: 'Claire', city: { zip: '41111' } },
                { name: 'Claire', city: { zip: '51111' } },
                { name: 'Anna' },
                { name: 'Donald', city: 2 },
            ]);
        });
    });

    describe("data change", () => {
        it("should refresh data when inputData change", () => {
            let newData = [{ id: 5, name: 'Ðrone' }, { id: 4, name: 'Ananas' }];
            datatable.ngOnChanges({ inputData: new SimpleChange(datatable.inputData, newData, false) });
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 5, name: 'Ðrone' }, { id: 4, name: 'Ananas' }]);
        });

        it("should refresh data when rows removed from inputData", () => {
            datatable.ngDoCheck();
            expect(datatable.data).toEqual(datatable.inputData);
            datatable.inputData.pop();
            datatable.ngDoCheck();
            expect(datatable.data).toEqual(datatable.inputData);
        });

        it("should refresh data when rows added to inputData", () => {
            datatable.ngDoCheck();
            expect(datatable.data).toEqual(datatable.inputData);
            datatable.inputData.push({ id: 6, name: 'Furby' });
            datatable.ngDoCheck();
            expect(datatable.data).toEqual(datatable.inputData);
        });

        it("should fire onPageChange event after inputData change", (done) => {
            datatable.setPage(2, 2);
            datatable.ngDoCheck();

            datatable.onPageChange.subscribe((opt: PageEvent) => {
                expect(opt.activePage).toEqual(1);
                expect(opt.dataLength).toEqual(2);
                expect(opt.rowsOnPage).toEqual(2);
                done();
            });
            let newData = [{ id: 5, name: 'Ðrone' }, { id: 4, name: 'Ananas' }];
            datatable.ngOnChanges({ inputData: new SimpleChange(datatable.inputData, newData, false) });
            datatable.ngDoCheck();
        });

        it("should fire onPageChange event after rows added", (done) => {
            datatable.setPage(2, 2);
            datatable.ngDoCheck();

            datatable.onPageChange.subscribe((opt: PageEvent) => {
                expect(opt.activePage).toEqual(2);
                expect(opt.dataLength).toEqual(6);
                expect(opt.rowsOnPage).toEqual(2);
                done();
            });
            datatable.inputData.push({ id: 6, name: 'Furby' });
            datatable.ngDoCheck();
        });

        it("should fire onPageChange event after rows removed", (done) => {
            datatable.setPage(2, 2);
            datatable.ngDoCheck();

            datatable.onPageChange.subscribe((opt: PageEvent) => {
                expect(opt.activePage).toEqual(1);
                expect(opt.dataLength).toEqual(2);
                expect(opt.rowsOnPage).toEqual(2);
                done();
            });
            _.times(3, () => datatable.inputData.pop());
            datatable.ngDoCheck();
        });

        it("should change page when no data on current page after changed inputData", () => {
            datatable.setPage(2, 2);
            datatable.ngDoCheck();

            let newData = [{ id: 5, name: 'Ðrone' }, { id: 4, name: 'Ananas' }];
            datatable.ngOnChanges({ inputData: new SimpleChange(datatable.inputData, newData, false) });
            datatable.ngDoCheck();
            expect(datatable.data).toEqual(newData);
        });

        it("should change page when no data on current page after rows removed", () => {
            datatable.setPage(2, 2);
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 2, name: 'ącki' }, { id: 5, name: 'Ðrone' }]);

            datatable.inputData.pop();
            datatable.inputData.pop();
            datatable.inputData.pop();
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 3, name: 'banana' }, { id: 1, name: 'Duck' }]);
        });

        it("shouldn't change page when can display data after data changed", () => {
            datatable.setPage(2, 1);
            datatable.ngDoCheck();

            let newData = [{ id: 5, name: 'Ðrone' }, { id: 1, name: 'Duck' }, { id: 4, name: 'Ananas' }];
            datatable.ngOnChanges({ inputData: new SimpleChange(datatable.inputData, newData, false) });
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 1, name: 'Duck' }]);
        });

        it("shouldn't change page when can display data after rows removed", () => {
            datatable.setPage(2, 1);
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 1, name: 'Duck' }]);

            datatable.inputData.pop();
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 1, name: 'Duck' }]);
        });

        it("shouldn't change page when can display data after rows added", () => {
            datatable.setPage(2, 1);
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 1, name: 'Duck' }]);

            datatable.inputData.push({ id: 6, name: 'Furby' });
            datatable.ngDoCheck();
            expect(datatable.data).toEqual([{ id: 1, name: 'Duck' }]);
        });

        it("shouldn't change page to 0 when data is empty", () => {
            datatable.setPage(2, 1);
            datatable.ngDoCheck();

            let newData = [];
            datatable.ngOnChanges({ inputData: new SimpleChange(datatable.inputData, newData, false) });
            datatable.ngDoCheck();
            expect(datatable.activePage).toEqual(1);
        });

        it("shouldn't change page to 0 when data is empty after removed rows", () => {
            datatable.setPage(2, 1);
            datatable.ngDoCheck();

            _.times(5, () => datatable.inputData.pop());
            datatable.ngDoCheck();
            expect(datatable.inputData.length).toEqual(0);
            expect(datatable.activePage).toEqual(1);
        });
    });
});