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import {
buildParameters,
exportParameters,
importParameters,
} from "./controller/parameters.js";
import { initSolvers, solveModel } from "./controller/solving.js";
import { chordGraph, chordName } from "./model/theory.js";
import { Step1Parts } from "./pipeline/step1parts.js";
import { Step2Chords } from "./pipeline/step2chords.js";
import { Step3Notes } from "./pipeline/step3notes.js";
import { CONTROLS } from "./view/controls.js";
import { submitFeedback } from "./view/feedback.js";
import { downloadBlob } from "./view/download.js";
import { PLOTTING } from "./view/plotting.js";
/** @external {alpinejs} https://www.npmjs.com/package/alpinejs */
/** @external {html-midi-player} https://www.npmjs.com/package/html-midi-player */
/** @external {picocss} https://www.npmjs.com/package/@picocss/pico */
/** Alpine "app" data object / entry point. */
document.addEventListener("alpine:init", () =>
Alpine.data("app", () => ({
// Solver readiness + status line
isMiniZincReady: false,
mznSolver: "",
mznSolvers: [],
statusText: "Initializing...",
// Theme
theme: "auto",
isSystemDark: false,
// Pipeline definition (loaded once at init)
steps: [],
schemas: {},
parameters: {},
// Pipeline outputs (populated by runSolver)
mznModelText: [[], [], []],
mznSolutionText: [[], [], []],
mznStatisticsText: [[], [], []],
musicB64Midi: null,
chordProgressionText: [],
resultTable: null,
// Console + UI transient state
consoleLog: [],
showConsole: false,
importedFileName: "",
// Theory helpers exposed to templates (per-row dynamic chord options).
chordGraph,
chordName,
...APP_METHODS,
})),
);
/** @private Methods on the Alpine "app" data object; bound to per-instance this. */
const APP_METHODS = {
exportParameters,
...CONTROLS,
downloadBlob,
submitFeedback,
...PLOTTING,
/** @desc Alpine lifecycle: detect dark mode, bind the midi-player autoscroll, init MiniZinc + step schemas. */
async init() {
const mq = window.matchMedia("(prefers-color-scheme: dark)");
this.isSystemDark = mq.matches;
mq.addEventListener("change", (e) => (this.isSystemDark = e.matches));
document.getElementById("midi-player")?.addEventListener("start", () => {
const viz = document.getElementById("midi-visualizer");
const sel = ".waterfall-notes-container";
const c = viz?.querySelector(sel) ?? viz?.shadowRoot?.querySelector(sel);
if (c) {
c.scrollTop = c.scrollHeight;
}
if (viz) {
viz.scrollTop = viz.scrollHeight;
}
});
this.statusText = "Initializing MiniZinc...";
try {
const solverList = await initSolvers();
this.mznSolvers = solverList;
this.mznSolver = solverList[0].id;
this.isMiniZincReady = true;
const newSteps = [new Step1Parts(), new Step2Chords(), new Step3Notes()];
Object.assign(this, await buildParameters(newSteps));
this.$watch("parameters.step2.part", () => this.updateGraph());
this.$nextTick(() => this.updateGraph());
document
.getElementById("import-params")
?.addEventListener("change", async (e) => {
const file = e.target.files[0];
if (!file) {
return;
}
try {
const merged = await importParameters(file);
this.parameters = { ...this.parameters, ...merged };
this.importedFileName = file.name;
} catch (err) {
this.log("Failed to import parameters", err);
}
});
this.log("Ready to compose.");
} catch (e) {
this.log("Failed to load solvers", e);
}
},
/**
* @desc Mirror msg into the status line and append a [HH:MM:SS]-stamped console-log entry;
* optional err is console.error'd and joined into the line as "Error: msg: <detail>".
*/
log(msg, err) {
let line = msg;
if (err) {
console.error(msg, err);
const detail =
err?.message ??
(typeof err === "object" ? JSON.stringify(err) : `${err}`);
line = `Error: ${msg}: ${detail}`;
}
this.statusText = line;
const t = new Date().toLocaleTimeString("de-DE");
this.consoleLog.push(`[${t}] ${line}`);
},
/**
* @desc Drive a full 3-step composition run via {@link compose}:
* bind hooks to Alpine state + DOM, then map the result onto the result table,
* voice colors, MIDI player, and status line.
* @listens {progressionLine}
*/
async runSolver() {
if (!this.isMiniZincReady) {
return;
}
const btn = document.getElementById("run-optimization-button");
btn.setAttribute("aria-busy", "true");
btn.disabled = true;
window.Tone?.start();
this.log("Running solver for all steps...");
this.resetResults();
try {
const lines = [];
const result = await compose(this.parameters, this.steps, {
log: this.log.bind(this),
loadPreset: this.loadPreset.bind(this),
solveStep: this.solveStep.bind(this),
updateGraph: this.updateGraph.bind(this),
onProgressionLine: (line) => {
lines.push(line);
this.chordProgressionText = [...lines];
},
});
if (!result) {
return;
}
this.resultTable = this.buildResultTable(result, this.parameters.step3);
this.applyVoiceStyles(this.resultTable.voiceLabels);
if (result.midi) {
this.musicB64Midi = result.midi.combinedB64;
await this.$nextTick();
this.wireMidiToPlayer(result.midi);
}
const { parts, failedParts: fp, solvedParts: sp } = result;
const u = [...new Set(fp)].join(", ");
this.log(
fp.length === 0
? `Done: ${sp}/${parts.length} parts solved.`
: sp > 0
? `Partial: ${sp}/${parts.length} parts solved. Overconstrained: ${u}. Try again.`
: "No solution: Model may be overconstrained.",
);
} catch (e) {
this.log("Solve failed", e);
} finally {
btn.removeAttribute("aria-busy");
btn.disabled = false;
}
},
/**
* @desc Clear all per-run state (mzn texts, midi, progression, graph, player srcs);
* keep the latest log line.
*/
resetResults() {
this.consoleLog = this.consoleLog.slice(-1);
this.mznModelText = [[], [], []];
this.mznSolutionText = [[], [], []];
this.mznStatisticsText = [[], [], []];
this.musicB64Midi = null;
this.chordProgressionText = [];
document.getElementById("graph")?.replaceChildren();
const sel = "midi-visualizer, midi-player";
document.querySelectorAll(sel).forEach((el) => el.removeAttribute("src"));
},
/**
* @desc Hook: Fetch a corpus preset (pi) JSON by id;
* null for "manual" or on fetch failure.
*/
async loadPreset(style) {
if (!style || style === "manual") {
return null;
}
try {
return await (await fetch(`scripts/presets/${style}.json`)).json();
} catch {
console.warn(`Could not load preset ${style}`);
return null;
}
},
/**
* @desc Hook: Run one MZN model on the solver;
* record model/solution/stats per step.index for the raw-output tabs.
*/
async solveStep(step, partLabel, modelStr) {
const idx = step.index - 1;
const label = partLabel ? `${step.name}: ${partLabel}` : step.name;
const file = `${step.id}_${Date.now()}.mzn`;
this.mznModelText[idx].push({ label, content: modelStr });
const r = await solveModel(file, modelStr, this.mznSolver);
const json = r.solution?.output?.json;
const stats = r.statistics
? JSON.stringify({ ...r.statistics }, null, 2)
: "{}";
const sol = JSON.stringify(json, null, 2);
this.mznSolutionText[idx].push({ label, content: sol });
this.mznStatisticsText[idx].push({ label, content: stats });
return json;
},
/**
* @desc Hook: Render the chord graph + sync form chord-selectors.
* With no arg: derive from form (mode change).
* With arg: render the compose-hook payload (path-highlighted).
* Also resets each part's start/end chord to the mode's tonic when no longer in activeNodes.
*/
updateGraph(svg) {
const parts = this.parameters?.step2?.part;
parts?.forEach((row) => {
const { activeNodes, tonic } = chordGraph(row.mode);
if (!activeNodes.includes(row.start_chord)) {
row.start_chord = tonic;
}
if (!activeNodes.includes(row.end_chord)) {
row.end_chord = tonic;
}
});
const s2 = parts?.[0];
const data =
svg ??
(s2 && {
graph: chordGraph(s2.mode),
path: null,
key: Number(s2.key) || 0,
mode: s2.mode,
});
if (!data) {
return;
}
const el = document.getElementById("graph");
if (el) {
el.innerHTML = this.plotChordGraph(
data.graph,
data.path,
data.key,
data.mode,
);
}
},
};
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