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// Thing: base class for wiki data types, providing wiki-specific utility
// functions on top of essential CacheableObject behavior.
import {inspect} from 'node:util';
import {color} from '#cli';
import find from '#find';
import {empty, filterProperties, openAggregate} from '#sugar';
import {getKebabCase} from '#wiki-data';
import {
isAdditionalFileList,
isBoolean,
isCommentary,
isColor,
isContributionList,
isDate,
isDirectory,
isFileExtension,
isName,
isString,
isURL,
validateArrayItems,
validateInstanceOf,
validateReference,
validateReferenceList,
} from '#validators';
import CacheableObject from './cacheable-object.js';
import * as composite from './composite.js';
export default class Thing extends CacheableObject {
static referenceType = Symbol('Thing.referenceType');
static getPropertyDescriptors = Symbol('Thing.getPropertyDescriptors');
static getSerializeDescriptors = Symbol('Thing.getSerializeDescriptors');
// Regularly reused property descriptors, for ease of access and generally
// duplicating less code across wiki data types. These are specialized utility
// functions, so check each for how its own arguments behave!
static common = {
name: (defaultName) => ({
flags: {update: true, expose: true},
update: {validate: isName, default: defaultName},
}),
color: () => ({
flags: {update: true, expose: true},
update: {validate: isColor},
}),
directory: () => ({
flags: {update: true, expose: true},
update: {validate: isDirectory},
expose: {
dependencies: ['name'],
transform(directory, {name}) {
if (directory === null && name === null) return null;
else if (directory === null) return getKebabCase(name);
else return directory;
},
},
}),
urls: () => ({
flags: {update: true, expose: true},
update: {validate: validateArrayItems(isURL)},
expose: {transform: (value) => value ?? []},
}),
// A file extension! Or the default, if provided when calling this.
fileExtension: (defaultFileExtension = null) => ({
flags: {update: true, expose: true},
update: {validate: isFileExtension},
expose: {transform: (value) => value ?? defaultFileExtension},
}),
// Straightforward flag descriptor for a variety of property purposes.
// Provide a default value, true or false!
flag: (defaultValue = false) => {
if (typeof defaultValue !== 'boolean') {
throw new TypeError(`Always set explicit defaults for flags!`);
}
return {
flags: {update: true, expose: true},
update: {validate: isBoolean, default: defaultValue},
};
},
// General date type, used as the descriptor for a bunch of properties.
// This isn't dynamic though - it won't inherit from a date stored on
// another object, for example.
simpleDate: () => ({
flags: {update: true, expose: true},
update: {validate: isDate},
}),
// General string type. This should probably generally be avoided in favor
// of more specific validation, but using it makes it easy to find where we
// might want to improve later, and it's a useful shorthand meanwhile.
simpleString: () => ({
flags: {update: true, expose: true},
update: {validate: isString},
}),
// External function. These should only be used as dependencies for other
// properties, so they're left unexposed.
externalFunction: () => ({
flags: {update: true},
update: {validate: (t) => typeof t === 'function'},
}),
// Super simple "contributions by reference" list, used for a variety of
// properties (Artists, Cover Artists, etc). This is the property which is
// externally provided, in the form:
//
// [
// {who: 'Artist Name', what: 'Viola'},
// {who: 'artist:john-cena', what: null},
// ...
// ]
//
// ...processed from YAML, spreadsheet, or any other kind of input.
contribsByRef: () => ({
flags: {update: true, expose: true},
update: {validate: isContributionList},
}),
// Artist commentary! Generally present on tracks and albums.
commentary: () => ({
flags: {update: true, expose: true},
update: {validate: isCommentary},
}),
// This is a somewhat more involved data structure - it's for additional
// or "bonus" files associated with albums or tracks (or anything else).
// It's got this form:
//
// [
// {title: 'Booklet', files: ['Booklet.pdf']},
// {
// title: 'Wallpaper',
// description: 'Cool Wallpaper!',
// files: ['1440x900.png', '1920x1080.png']
// },
// {title: 'Alternate Covers', description: null, files: [...]},
// ...
// ]
//
additionalFiles: () => ({
flags: {update: true, expose: true},
update: {validate: isAdditionalFileList},
expose: {
transform: (additionalFiles) =>
additionalFiles ?? [],
},
}),
// A reference list! Keep in mind this is for general references to wiki
// objects of (usually) other Thing subclasses, not specifically leitmotif
// references in tracks (although that property uses referenceList too!).
//
// The underlying function validateReferenceList expects a string like
// 'artist' or 'track', but this utility keeps from having to hard-code the
// string in multiple places by referencing the value saved on the class
// instead.
referenceList: (thingClass) => {
const {[Thing.referenceType]: referenceType} = thingClass;
if (!referenceType) {
throw new Error(`The passed constructor ${thingClass.name} doesn't define Thing.referenceType!`);
}
return {
flags: {update: true, expose: true},
update: {validate: validateReferenceList(referenceType)},
};
},
// Corresponding function for a single reference.
singleReference: (thingClass) => {
const {[Thing.referenceType]: referenceType} = thingClass;
if (!referenceType) {
throw new Error(`The passed constructor ${thingClass.name} doesn't define Thing.referenceType!`);
}
return {
flags: {update: true, expose: true},
update: {validate: validateReference(referenceType)},
};
},
// Corresponding dynamic property to referenceList, which takes the values
// in the provided property and searches the specified wiki data for
// matching actual Thing-subclass objects.
resolvedReferenceList({list, data, find}) {
return Thing.composite.from(`Thing.common.resolvedReferenceList`, [
Thing.composite.withResolvedReferenceList({
list, data, find,
notFoundMode: 'filter',
}),
Thing.composite.exposeDependency('#resolvedReferenceList'),
]);
},
// Corresponding function for a single reference.
resolvedReference({ref, data, find}) {
return Thing.composite.from(`Thing.common.resolvedReference`, [
Thing.composite.withResolvedReference({ref, data, find}),
Thing.composite.exposeDependency('#resolvedReference'),
]);
},
// Corresponding dynamic property to contribsByRef, which takes the values
// in the provided property and searches the object's artistData for
// matching actual Artist objects. The computed structure has the same form
// as contribsByRef, but with Artist objects instead of string references:
//
// [
// {who: (an Artist), what: 'Viola'},
// {who: (an Artist), what: null},
// ...
// ]
//
// Contributions whose "who" values don't match anything in artistData are
// filtered out. (So if the list is all empty, chances are that either the
// reference list is somehow messed up, or artistData isn't being provided
// properly.)
dynamicContribs(contribsByRefProperty) {
return Thing.composite.from(`Thing.common.dynamicContribs`, [
Thing.composite.withResolvedContribs({
from: contribsByRefProperty,
to: '#contribs',
}),
Thing.composite.exposeDependency('#contribs'),
]);
},
// Nice 'n simple shorthand for an exposed-only flag which is true when any
// contributions are present in the specified property.
contribsPresent: (contribsByRefProperty) => ({
flags: {expose: true},
expose: {
dependencies: [contribsByRefProperty],
compute({
[contribsByRefProperty]: contribsByRef,
}) {
return !empty(contribsByRef);
},
}
}),
// Neat little shortcut for "reversing" the reference lists stored on other
// things - for example, tracks specify a "referenced tracks" property, and
// you would use this to compute a corresponding "referenced *by* tracks"
// property. Naturally, the passed ref list property is of the things in the
// wiki data provided, not the requesting Thing itself.
reverseReferenceList({data, list}) {
return Thing.composite.from(`Thing.common.reverseReferenceList`, [
Thing.composite.withReverseReferenceList({data, list}),
Thing.composite.exposeDependency('#reverseReferenceList'),
]);
},
// General purpose wiki data constructor, for properties like artistData,
// trackData, etc.
wikiData: (thingClass) => ({
flags: {update: true},
update: {
validate: validateArrayItems(validateInstanceOf(thingClass)),
},
}),
// This one's kinda tricky: it parses artist "references" from the
// commentary content, and finds the matching artist for each reference.
// This is mostly useful for credits and listings on artist pages.
commentatorArtists: () => ({
flags: {expose: true},
expose: {
dependencies: ['artistData', 'commentary'],
compute: ({artistData, commentary}) =>
artistData && commentary
? Array.from(
new Set(
Array.from(
commentary
.replace(/<\/?b>/g, '')
.matchAll(/<i>(?<who>.*?):<\/i>/g)
).map(({groups: {who}}) =>
find.artist(who, artistData, {mode: 'quiet'})
)
)
)
: [],
},
}),
};
// Default custom inspect function, which may be overridden by Thing
// subclasses. This will be used when displaying aggregate errors and other
// command-line logging - it's the place to provide information useful in
// identifying the Thing being presented.
[inspect.custom]() {
const cname = this.constructor.name;
return (
(this.name ? `${cname} ${color.green(`"${this.name}"`)}` : `${cname}`) +
(this.directory ? ` (${color.blue(Thing.getReference(this))})` : '')
);
}
static getReference(thing) {
if (!thing.constructor[Thing.referenceType]) {
throw TypeError(`Passed Thing is ${thing.constructor.name}, which provides no [Thing.referenceType]`);
}
if (!thing.directory) {
throw TypeError(`Passed ${thing.constructor.name} is missing its directory`);
}
return `${thing.constructor[Thing.referenceType]}:${thing.directory}`;
}
static composite = composite;
}
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