import { Select } from "../applet/Init";
import { KeyControl } from "../applet/Keyboard";
import { Loop } from "../applet/Loop";
import { DrawSet, Layer } from "../applet/Render";
import { FindCollisions } from "./Collision";
import {
    CollisionClass,
    ComponentSchema,
    Data,
    Location,
    PolygonComponent,
    RenderBounds,
} from "./Components";
import {
    Component,
    copySparse,
    Create,
    EntityState,
    Join,
    Liveness,
    Lookup,
    Remove,
    StateForSchema,
    Store,
} from "./Data";
import { DumbMotion } from "./Location";
import { RunRenderBounds } from "./Renderers";

class Generic<T> extends Component<T> {
    constructor(from: T) {
        super(from);
        Object.assign(this, from);
    }
    clone(): Generic<T> & T {
        return new Generic<T>(this as unknown as T) as Generic<T> & T;
    }
}
function generic<T>(from: T): Component<T> & T {
    return new Generic<T>(from) as Component<T> & T;
}

interface Apple {}
interface Banana {
    peeled: boolean
}
interface Carrot {
    cronch: number
}

interface TestSchema extends ComponentSchema {
    apple: Apple;
    banana: Banana;
    carrot: Carrot;
}

class TestData extends Data implements StateForSchema<TestSchema> {
    apple: Store<Generic<Apple>>;
    banana: Store<Generic<Banana>>;
    carrot: Store<Generic<Carrot>>;
    constructor(from: Partial<TestData>) {
        super(from);
        this.apple = copySparse(from.apple);
        this.banana = copySparse(from.banana);
        this.carrot = copySparse(from.carrot);
    }
    clone(): TestData {
        return new TestData(this);
    }
}

function makeTestData(): TestData {
    return new TestData({
        entity: [
            new EntityState({generation: 5, alive: Liveness.ALIVE}),
            new EntityState({generation: 5, alive: Liveness.DEAD}),
            new EntityState({generation: 5, alive: Liveness.ALIVE}),
            new EntityState({generation: 5, alive: Liveness.ALIVE}),
            new EntityState({generation: 5, alive: Liveness.INACTIVE}),
            new EntityState({generation: 5, alive: Liveness.ALIVE}),
        ],
        apple: [
            generic({generation: 5}),
            generic({generation: 5}),
            generic({generation: -1}),
            generic({generation: -1}),
            generic({generation: 5}),
            generic({generation: 5}),
        ],
        banana: {
            3: generic({generation: 5, peeled: false}),
            4: generic({generation: 5, peeled: true}),
        },
        carrot: {
            0: generic({generation: 5, cronch: 1}),
            1: generic({generation: 5, cronch: 1}),
            2: generic({generation: 4, cronch: 10}),
            3: generic({generation: 5, cronch: 1}),
        },
    });
}

class EcsJoinTest {
    constructor(pre: HTMLElement) {
        const data = new TestData({

        });
        pre.innerText = JSON.stringify({
            "apples": Join(data, "apple"),
            "bananas": Join(data, "banana"),
            "carrots": Join(data, "carrot"),
            "apples+carrots": Join(data, "apple", "carrot"),
        }, null, 2);
    }
}

class EcsLookupTest {
    constructor(pre: HTMLElement) {
        const data = makeTestData();
        const applesMaybeCarrots = Join(data, "apple", "id").map(([apple, id]) => ({
            apple,
            maybeCarrot: Lookup(data, id, "carrot")[0]
        }));
        pre.innerText = JSON.stringify(applesMaybeCarrots, null, 2);
    }
}

class EcsRemoveTest {
    constructor(pre: HTMLElement) {
        const data = makeTestData();
        const beforeDelete = Join(data, "apple", "carrot", "id",);
        Remove(data, [0, 5]);
        const afterDelete = Join(data, "apple", "carrot", "id");
        pre.innerText = JSON.stringify({
            beforeDelete,
            afterDelete
        }, null, 2);
    }
}

class EcsCreateTest {
    constructor(pre: HTMLElement) {
        const data = makeTestData();
        const beforeCreate = Join(data, "apple", "banana", "carrot", "id");
        const createdId = Create(data, {
            apple: generic({}),
            banana: generic({peeled: false}),
            carrot: generic({cronch: 11})
        });
        const afterCreate = Join(data, "apple", "banana", "carrot", "id");
        pre.innerText = JSON.stringify({
            beforeCreate,
            afterCreate,
            createdId
        }, null, 2);
    }
}

class LoopTest {
    data = new Data({});

    constructor(public canvas: HTMLCanvasElement, cx: CanvasRenderingContext2D, keys: KeyControl) {
        const drawSet = new DrawSet();

        // spinner box
        Create(this.data, {
            location: new Location({
                X: 200,
                Y: 200,
                VAngle: Math.PI
            }),
            bounds: new PolygonComponent({points: [-50, 50, -60, 250, 60, 250, 50, 50]}),
            collisionTargetClass: new CollisionClass({ name: "block"}),
            renderBounds: new RenderBounds({color: "#0a0", layer: 0}),
        });

        // triangles
        [0, 1, 2, 3, 4, 5].forEach(angle => Create(this.data, {
            location: new Location({
                X: 200,
                Y: 200,
                Angle: angle,
                VAngle: -Math.PI/10
            }),
            bounds: new PolygonComponent({points: [70, 0, 55, 40, 85, 40]}),
            collisionSourceClass: new CollisionClass({ name: "tri"}),
            renderBounds: new RenderBounds({
                color: "#d40",
                layer: 0,
            })
        }));

        const loop = new Loop(30,
            interval => {
                DumbMotion(this.data, interval);

                Join(this.data, "collisionSourceClass", "renderBounds").forEach(([collisionSourceClass, renderBounds]) => {
                    if(collisionSourceClass.name === "tri") {
                        renderBounds.color = "#d40";
                    }
                });

                FindCollisions(this.data, 500, (className, sourceId, _targetId) => {
                    switch(className) {
                        case "tri>block":
                            const [debug] = Lookup(this.data, sourceId, "renderBounds");
                            if(debug) debug.color = "#0ff";
                            break;
                    }
                });
            },
            dt => {
                cx.fillStyle = "#848";
                cx.fillRect(0, 0, canvas.width, canvas.height);
                RunRenderBounds(this.data, drawSet);
                drawSet.draw(cx, dt);
            }
        );
        loop.start();

        keys.setHandler({
            press: key => {
                if(key == "a") loop.start();
                else if(key == "b") loop.stop();
            }
        });
    }
}

export function BindTests(): void {
    Select("#EcsJoinTest").forEach(e => new EcsJoinTest(e));
    Select("#EcsLookupTest").forEach(e => new EcsLookupTest(e));
    Select("#EcsRemoveTest").forEach(e => new EcsRemoveTest(e));
    Select("#EcsCreateTest").forEach(e => new EcsCreateTest(e));
    Select("#RenderTest").forEachCanvas((c, cx, keys) => new LoopTest(c, cx, keys));
}