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cautious-journey/src/labels.ts

145 lines
3.2 KiB
TypeScript

import { doesExist } from '@apextoaster/js-utils';
import { prng } from 'seedrandom';
import { randomItem } from './utils';
/**
* A reference to another label.
*/
export interface LabelRef {
name: string;
}
/**
* A set of labels to add and/or remove.
*/
export interface ChangeSet {
adds: Array<LabelRef>;
removes: Array<LabelRef>;
}
/**
* Common fields for all labels.
*/
export interface BaseLabel {
/**
* Label name.
*/
name: string;
/**
* Display color.
*/
color?: string;
/**
* Long-form description.
*/
desc?: string;
/**
* Label priority.
*/
priority: number;
}
/**
* Individual labels: the equivalent of a checkbox.
*/
export interface FlagLabel extends BaseLabel, ChangeSet {
requires: Array<LabelRef>;
}
/**
* The transition between two state values.
*/
export interface StateChange extends ChangeSet {
/**
* Required labels for this state change to occur.
*/
matches: Array<LabelRef>;
}
/**
* One of many values for a particular state.
*/
export interface StateValue extends BaseLabel, ChangeSet {
/**
* State changes that could occur to this value.
*/
becomes: Array<StateChange>;
}
/**
* Grouped labels: the equivalent of a radio group.
*/
export interface StateLabel extends BaseLabel {
/**
* Values for this state.
*/
values: Array<StateValue>;
}
/**
* Calculate the set of unique names for a list of flags and a list of states, with all state values
* qualified and included.
*/
export function getLabelNames(flags: Array<FlagLabel>, states: Array<StateLabel>): Set<string> {
const labels = [];
for (const flag of flags) {
labels.push(flag.name);
}
for (const state of states) {
for (const value of state.values) {
labels.push(getValueName(state, value));
}
}
return new Set(labels);
}
export function splitValueName(name: string): Array<string> {
return name.split('/');
}
export function getValueName(state: StateLabel, value: StateValue): string {
return `${state.name}/${value.name}`;
}
/**
* Sort labels by their priority field, highest first.
*
* TODO: add some sort options: high-first or low-first, case-sensitivity
*/
export function prioritySort<TLabel extends BaseLabel>(labels: Array<TLabel>): Array<TLabel> {
return labels.sort((a, b) => {
if (a.priority === b.priority) {
const aName = a.name.toLocaleLowerCase();
const bName = b.name.toLocaleLowerCase();
return aName.localeCompare(bName);
} else {
// B first for high-to-low
return b.priority - a.priority;
}
});
}
/**
* Pick a label color, preferring the label data if set, falling back to a randomly selected color.
*/
export function getLabelColor(colors: Array<string>, random: prng, flag: FlagLabel): string;
export function getLabelColor(colors: Array<string>, random: prng, state: StateLabel, value: StateValue): string;
export function getLabelColor(colors: Array<string>, random: prng, label: BaseLabel, value?: StateValue): string {
if (doesExist(value) && doesExist(value.color) && value.color !== '') {
return value.color;
}
if (doesExist(label.color) && label.color !== '') {
return label.color;
}
return randomItem(colors, random);
}