/**
 * Properties: the Variables node for the object it is handed. Its type decides what a port carries:
 * a property of that type keeps its own default and field, Any names plain ports of a picked kind.
 */
import { describe, expect, it } from 'vitest';
import { CommandError } from '../../src/core/commands/Command';
import { CollapseNodesCommand } from '../../src/core/commands/graphCommands';
import { AddPortCommand, RenamePortCommand } from '../../src/core/commands/portCommands';
import { RenameVariableCommand } from '../../src/core/commands/variableCommands';
import {
  type DeclaredPort,
  GraphInterpreter,
  inlineInputDef,
  NO_LOOKUP,
  OBJECT_BEHAVIOR_PARAM,
  OBJECT_TYPE_PARAM,
  propertyPort,
  resolveDef,
} from '../../src/core/graph';
import type { BehaviorAsset } from '../../src/core/model/Asset';
import { graphLookup } from '../../src/core/model/graphLookup';
import type { PropertyBag } from '../../src/core/model/Properties';
import { fakeContext, fakeEntity, graphEditor, makeBehavior, makeProject, roundTrip } from '../helpers';

const SPRITE = { [OBJECT_TYPE_PARAM]: 'sprite' };
const set = (key: string): DeclaredPort => ({ key, kind: 'number', write: true });

/** `On start → Properties{…} on self`, its `width` output then stored in `seen`. */
function onSelf(ports: DeclaredPort[], params: PropertyBag = SPRITE) {
  const fixture = makeProject();
  const behavior = makeBehavior(fixture, 'B', ['seen']);
  const edit = graphEditor(fixture, behavior);
  const start = edit.addNode('OnStart');
  const self = edit.addNode('Self');
  const props = edit.properties(ports, params);
  const store = edit.variables(['seen'], { write: true });
  edit.wire([
    [start, 'exec', props, 'exec'],
    [self, 'object', props, 'object'],
    [props, 'exec', store, 'exec'],
    [props, 'width', store, 'seen'],
  ]);
  return { fixture, behavior, props };
}

function run(behavior: BehaviorAsset, fixture: ReturnType<typeof makeProject>, props: PropertyBag) {
  const self = { ...fakeEntity('self'), props: { ...props } };
  const ctx = fakeContext({ self, variables: { seen: 0 } });
  new GraphInterpreter(behavior.graph, graphLookup(fixture.project)).fire('OnStart', ctx);
  return { props: self.props, seen: ctx.variables.seen };
}

describe('a node that reads and writes properties of an object', () => {
  it("writes an unconnected input as its property's default, and reads it back after", () => {
    const { fixture, behavior } = onSelf([set('width'), set('color')]);
    expect(run(behavior, fixture, { width: 10, color: 0 })).toEqual({
      props: { width: 100, color: 0xffffff },
      seen: 100,
    });
  });

  it('writes the value typed on the node once there is one', () => {
    const { fixture, behavior, props } = onSelf([set('width')]);
    props.params.width = 64;
    expect(run(behavior, fixture, { width: 10 }).props.width).toBe(64);
  });

  it('reads a property at the moment it is asked, so one node counts it up', () => {
    const fixture = makeProject();
    const behavior = makeBehavior(fixture, 'B');
    const edit = graphEditor(fixture, behavior);
    const start = edit.addNode('OnStart');
    const self = edit.addNode('Self');
    const coins = edit.properties([set('coins')]);
    const add = edit.addNode('Add', { b: 1 });
    edit.wire([
      [start, 'exec', coins, 'exec'],
      [self, 'object', coins, 'object'],
      [coins, 'coins', add, 'a'],
      [add, 'result', coins, 'coins'],
    ]);
    const self_ = { ...fakeEntity('self'), props: { coins: 5 } };
    const interpreter = new GraphInterpreter(behavior.graph, graphLookup(fixture.project));
    for (let i = 0; i < 2; i++) interpreter.fire('OnStart', fakeContext({ self: self_ }));
    expect(self_.props.coins).toBe(7);
  });

  it('switches an object off and, left unconnected, on – what Set enabled did', () => {
    const switched = (typed: PropertyBag, before: boolean) => {
      const fixture = makeProject();
      const behavior = makeBehavior(fixture, 'B');
      const edit = graphEditor(fixture, behavior);
      const start = edit.addNode('OnStart');
      const self = edit.addNode('Self');
      const node = edit.properties([{ key: 'enabled', kind: 'boolean', write: true }], {
        [OBJECT_TYPE_PARAM]: 'container',
      });
      Object.assign(node.params, typed);
      edit.wire([
        [start, 'exec', node, 'exec'],
        [self, 'object', node, 'object'],
      ]);
      return run(behavior, fixture, { enabled: before }).props.enabled;
    };
    expect([switched({ enabled: false }, true), switched({}, false)]).toEqual([false, true]);
  });

  it('has flow pins only while a property is set, and they sit above the object input', () => {
    const { behavior, props } = onSelf([set('width'), { key: 'height', kind: 'number' }]);
    const keys = () => {
      const def = resolveDef(props, behavior.graph, NO_LOOKUP)!;
      return { inputs: def.inputs.map((p) => p.key), outputs: def.outputs.map((p) => p.key) };
    };
    expect(keys()).toEqual({ inputs: ['exec', 'object', 'width'], outputs: ['exec', 'width', 'height'] });
    props.ports = props.ports!.map(({ write: _, ...p }) => p);
    expect(keys()).toEqual({ inputs: ['object'], outputs: ['width', 'height'] });
  });
});

describe('what a port carries, by the type of the node', () => {
  const width: DeclaredPort = { key: 'width', kind: 'number' };

  it("takes the def of its own type, not another type's that shares the key", () => {
    expect(propertyPort(width, SPRITE)).toMatchObject({ default: 100, field: { min: 1 } });
    expect(propertyPort(width, { [OBJECT_TYPE_PARAM]: 'camera' })).toMatchObject({
      default: 640,
      field: { decimals: 0 },
    });
  });

  it('edits a typed-in value with the field of that property', () => {
    const text = { [OBJECT_TYPE_PARAM]: 'text' };
    expect(inlineInputDef(propertyPort({ key: 'color', kind: 'number' }, text)).kind).toBe('color');
    expect(inlineInputDef(propertyPort({ key: 'align', kind: 'text' }, text)).kind).toBe('enum');
    // A kind the property does not travel as (a hand-edited file) is left a plain port.
    expect(propertyPort({ key: 'width', kind: 'text' }, SPRITE).field).toBeUndefined();
  });

  it('keeps a port under Any plain, at the zero of its kind, whatever its name', () => {
    expect(propertyPort(width, {})).toMatchObject({ default: 0 });
    expect(propertyPort(width, {}).field).toBeUndefined();
    expect(propertyPort({ key: 'ready', kind: 'boolean' }, {}).default).toBe(false);
  });

  it('shows its type as a setting row, and the behavior only under that type', () => {
    const fixture = makeProject();
    const edit = graphEditor(fixture, makeBehavior(fixture, 'B'));
    const hidden = (params: PropertyBag) => {
      const node = edit.properties([], params);
      return resolveDef(node, { nodes: [node], edges: [] }, NO_LOOKUP)!.hiddenParams?.(node.params);
    };
    expect(hidden(SPRITE)).toEqual([OBJECT_BEHAVIOR_PARAM]);
    expect(hidden({})).toEqual([OBJECT_BEHAVIOR_PARAM]);
    expect(hidden({ [OBJECT_TYPE_PARAM]: 'behavior' })).toEqual([]);
  });

  it('is titled Properties while open and says what it does once collapsed', () => {
    const fixture = makeProject();
    const behavior = makeBehavior(fixture, 'B');
    const edit = graphEditor(fixture, behavior);
    const width = { key: 'width', kind: 'number' } as const;
    const nodes = [
      edit.properties([set('width'), set('height')], SPRITE),
      edit.properties([width, { key: 'height', kind: 'number' }], SPRITE),
      edit.properties([set('width')], SPRITE),
      edit.properties([width], SPRITE),
      edit.properties([], SPRITE),
    ];
    const titles = () => nodes.map((node) => resolveDef(node, behavior.graph, NO_LOOKUP)!.label);
    expect(new Set(titles())).toEqual(new Set(['Properties']));
    fixture.stack.execute(
      new CollapseNodesCommand(
        behavior.id,
        nodes.map((node) => node.id),
        true,
      ),
    );
    expect(titles()).toEqual([
      'Set 2 properties',
      'Get 2 properties',
      'Set width',
      'Get width',
      'No properties',
    ]);
  });
});

describe('the keys a port cannot take', () => {
  it('keeps the object input and the settings their own', () => {
    const { fixture, behavior, props } = onSelf([set('width')]);
    for (const key of ['object', OBJECT_TYPE_PARAM, OBJECT_BEHAVIOR_PARAM]) {
      expect(() =>
        fixture.stack.execute(new AddPortCommand(behavior.id, props.id, { key, kind: 'number' })),
      ).toThrow(CommandError);
      expect(() => fixture.stack.execute(new RenamePortCommand(behavior.id, props.id, 'width', key))).toThrow(
        CommandError,
      );
    }
  });

  it('drops a port from a file that would take one of them', () => {
    const { fixture, behavior, props } = onSelf([set('width')]);
    props.ports = [
      ...props.ports!,
      { key: 'object', kind: 'number' },
      { key: OBJECT_TYPE_PARAM, kind: 'text' },
    ];
    const loaded = roundTrip(fixture.project);
    const asset = loaded.assets.find((a) => a.id === behavior.id) as BehaviorAsset;
    const node = asset.graph.nodes.find((n) => n.id === props.id)!;
    expect((node.ports ?? []).map((p) => p.key)).toEqual(['width']);
  });
});

describe('a renamed variable', () => {
  it('pulls along the ports of Properties nodes pointing at its behavior, in every graph', () => {
    const fixture = makeProject();
    const game = makeBehavior(fixture, 'Game', ['coins']);
    const player = makeBehavior(fixture, 'Player', ['coins']);
    const edit = graphEditor(fixture, player);
    const pointing = { [OBJECT_TYPE_PARAM]: 'behavior', [OBJECT_BEHAVIOR_PARAM]: game.id };
    const ofGame = edit.properties([set('coins')], { ...pointing, coins: 3 });
    const any = edit.properties([set('coins')]);
    const ofPlayer = edit.properties([set('coins')], { ...pointing, [OBJECT_BEHAVIOR_PARAM]: player.id });
    const log = edit.addNode('Log');
    edit.connect(ofGame, 'coins', log, 'message');
    const keys = () => [ofGame, any, ofPlayer].map((n) => n.ports!.map((p) => p.key).join());

    fixture.stack.execute(new RenameVariableCommand(game.id, 'coins', 'gold'));
    expect(keys()).toEqual(['gold', 'coins', 'coins']);
    expect(ofGame.params).toMatchObject({ gold: 3 });
    expect(player.graph.edges.map((e) => `${e.from.port}>${e.to.port}`)).toEqual(['gold>message']);

    fixture.stack.undo();
    expect(keys()).toEqual(['coins', 'coins', 'coins']);
    expect(ofGame.params).toMatchObject({ coins: 3 });
  });

  it('leaves a port alone whose new key the node already has', () => {
    const fixture = makeProject();
    const game = makeBehavior(fixture, 'Game', ['coins']);
    const pointing = { [OBJECT_TYPE_PARAM]: 'behavior', [OBJECT_BEHAVIOR_PARAM]: game.id };
    // `gold` is the port of a variable deleted since.
    const node = graphEditor(fixture, game).properties([set('coins'), set('gold')], pointing);
    fixture.stack.execute(new RenameVariableCommand(game.id, 'coins', 'gold'));
    expect(node.ports!.map((p) => p.key)).toEqual(['coins', 'gold']);
  });
});