import type { Application } from 'pixi.js';
import { physicsStatus } from '../runtime/physics/engine';
import type { SchedulerOptions } from '../core/music/Scheduler';
import type { Sequence } from '../core/music/sequence';
import type { FxEnvelope, FxStage } from '../core/soundfx/nodes';
import { Music } from '../viewport/music';
import {
  bothAtCenter,
  envelopeDriver,
  followCurve,
  releaseEnvelope,
  soundLibrary,
  stageNodes,
} from '../viewport/SoundLibrary';
import { curveHooks } from './debug/curveHooks';
import { patternHooks } from './debug/patternHooks';
import { songHooks } from './debug/songHooks';
import { documentHooks } from './debug/documentHooks';
import { graphHooks } from './debug/graphHooks';
import { centreOf, type HookContext } from './debug/hookHelpers';
import { pixelArtHooks } from './debug/pixelArtHooks';
import { renderHooks } from './debug/renderHooks';
import { sceneHooks } from './debug/sceneHooks';
import { uiHooks } from './debug/uiHooks';
import { vectorArtHooks } from './debug/vectorArtHooks';
import type { DocumentId, Editor, TabId } from './Editor';
import { NodeBoard } from './plugins/NodeBoard';
import type { EditorState } from './state';
import { rectOf } from './textProbe';

/**
 * Installs `window.__gm`, which the check scripts in tools/ use to find widgets by their
 * visible text and to read editor state. The hooks of each area live in `debug/`.
 */
export function installDebugHook(app: Application, state: EditorState, editor: Editor): void {
  const context: HookContext = { app, state, editor };
  const music = new Music(() => state.project);
  (window as unknown as { __gm: unknown }).__gm = {
    state,
    /** The Pixi application, for probes that need the renderer or the stage. */
    app,
    ...uiHooks(context),
    ...sceneHooks(context),
    ...graphHooks(context),
    ...documentHooks(context),
    ...pixelArtHooks(context),
    ...vectorArtHooks(context),
    ...curveHooks(context),
    ...patternHooks(context),
    ...songHooks(context),
    ...renderHooks(context),
    /**
     * Voices started, stopped and in flight. CI runs the browser with `--mute-audio`, so nothing
     * is ever heard there: these counters are the only way a check can see that a graph played
     * anything at all, the way `renderStats` is for a repaint that did not happen.
     */
    sound: {
      stats: () => soundLibrary.stats(),
      duration: (file: string) => soundLibrary.duration(file),
      /** Where the knobs of each voice of that file are now, oldest first, a pitch as its speed (#315). */
      levels: (file: string) => soundLibrary.levels(file),
      pitchWorkletUrl: () => soundLibrary.pitchWorkletUrl(),
      /** Seconds on the audio clock: the time a voice really runs on. */
      clock: () => soundLibrary.clock(),
      /** Decodes ahead of a check, so a play can be asserted without racing the network. */
      load: (file: string) => soundLibrary.load(file).then((buffer) => buffer?.duration ?? null),
      stopAll: () => soundLibrary.stopAll(),
      /** What Stop sound asks for: every voice of that file, its echoes cut or left to ring (#324). */
      stop: (file: string, letRing: boolean) => soundLibrary.stop(file, letRing),
      /** The patterns a game plays, with the notes last planned of each. */
      patterns: () => soundLibrary.patterns(),
      /** The nodes a stage of a voice becomes, in any context – an offline one renders what it does. */
      stageNodes: (context: BaseAudioContext, stage: FxStage) => stageNodes(context, stage),
      /** What drives the two shares of a Mix "Both at center", in any context (unstarted). */
      bothAtCenter: (context: BaseAudioContext, mix: number, a: GainNode, b: GainNode) =>
        bothAtCenter(context, mix, a, b),
      /** The curve of an Envelope from `at` (unstarted), its release, and how it moves a number (#335). */
      envelopeDriver: (context: BaseAudioContext, envelope: FxEnvelope, at: number) =>
        envelopeDriver(context, envelope, at),
      releaseEnvelope: (level: AudioParam, envelope: FxEnvelope, startedAt: number, at: number) =>
        releaseEnvelope(level, envelope, startedAt, at),
      stageWith: (context: BaseAudioContext, stage: FxStage, driver: ConstantSourceNode) =>
        stageNodes(context, stage, (mod, param, ratio, map) =>
          followCurve(context, driver, mod, param, ratio, map),
        ),
    },
    /**
     * The scheduler (#332), which nothing in the editor plays yet: a check hands it a sequence of
     * notes and reads back what was planned for which second of the audio clock.
     */
    music: {
      play: (sequence: Sequence, options?: SchedulerOptions & { from?: number }) =>
        music.play(sequence, options),
      edit: (sequence: Sequence) => music.edit(sequence),
      stop: () => music.stop(),
      position: () => music.current?.position() ?? null,
      playing: () => music.current?.playing ?? false,
      planned: () => [...music.planned],
      latency: () => soundLibrary.latency(),
    },
    world: () => editor.worldSnapshot(),
    playInfo: () => editor.playInfo(),
    /** Which scene Play would start, and under which of the two rules (#183: set in the settings). */
    playFrom: () => editor.playFromInfo(),
    /** The two run buttons of the top bar: the picture each wears, and whether it takes a click. */
    runButtons: () => editor.runButtons(),
    /** Where to click one of the icon buttons: menu, undo, redo, play, pause. */
    toolbarAt: (name: keyof Editor['toolbarControls']) => centreOf(editor.toolbarControls[name]),
    /** Behaviors running without Play (`Run in editor`), and how long they have been at it. */
    editorRun: () => editor.editorRunInfo(),
    physics: () => physicsStatus(),
    tab: () => editor.tab,
    showTab: (tab: TabId) => editor.showTab(tab),
    /** The open documents in tab order and the one showing (#171); a document is `asset:<id>` or `list`. */
    documents: () => editor.openDocuments(),
    openDocument: (doc: DocumentId) => editor.openDocument(doc),
    closeDocument: (doc: DocumentId) => editor.closeDocument(doc),
    plugins: {
      /** Every file in `data/plugins/` and what became of it. */
      records: () => [...(editor.plugins?.records ?? [])],
      /** The plugins in the user management tab (#179): one row per file, with its switch. */
      pane: () => ({ ...editor.pluginsPane.debugInfo(), visible: editor.tab === 'management' }),
      /** Where to click the switch of one plugin; null when it has no row. */
      switchAt: (file: string) => {
        const box = editor.pluginsPane.switchOf(file);
        return box ? centreOf(box) : null;
      },
      /** A plugin tab's node board as drawn, with its canvas and Fit button; null without one. */
      board: (tabId: string) => {
        const pane = editor.pluginPane(tabId);
        if (!(pane instanceof NodeBoard)) return null;
        return {
          ...pane.debugInfo(),
          visible: pane.visible,
          rect: rectOf(pane),
          fit: centreOf(pane.fitButton),
        };
      },
    },
  };
}