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theme.ts
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theme.ts
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import chalk from 'chalk';
import convert from 'color-convert';
import elegantSpinner from 'elegant-spinner';
import { Wrapper } from 'stdout-update/lib/wrapper';
import { Terminal } from 'stdout-update/lib/terminal';
import * as Figures from 'figures';
import { Task, TaskStatus } from './task';
import { ProgressBar } from './progress-bar';
const frame = elegantSpinner();
export enum IndicationType {
Default = 'default',
Active = 'active',
Success = 'success',
Skip = 'skip',
Error = 'error',
Message = 'message',
Info = 'info',
Warning = 'warning',
Subtask = 'subtask',
List = 'list',
Dim = 'dim',
}
export enum IndicationColor {
Default = '',
Active = '#4285f4',
Success = '#00c851',
Skip = '#ff8800',
Error = '#ff4444',
Message = '#2e2e2e',
Info = '#33b5e5',
Warning = '#ffbb33',
Subtask = '#2e2e2e',
List = '#4285f4',
Dim = '#838584',
}
export enum IndicationBadge {
Default = '',
Error = '[fail]',
Skip = '[skip]',
}
export enum Indent {
Default = 2,
Long = 3,
Empty = 0,
}
export interface Gradient {
position: number;
begin: IndicationType;
end: IndicationType;
}
export type ThemeOptions = {
[key in IndicationType]?:
| string
| {
color?: string;
symbol?: string;
badge?: string;
}
| [string?, string?, string?];
};
export class Theme {
public static INDENT = ' ';
private colors: Map<IndicationType, string> = new Map();
private symbols: Map<IndicationType, string> = new Map();
private badges: Map<IndicationType, string> = new Map();
public constructor(options?: ThemeOptions) {
if (options) {
const { colors, symbols, badges } = this;
const list = new Map(Object.entries(options));
const set = (key: IndicationType, color?: string, symbol?: string, badge?: string): void => {
if (color) colors.set(key, color);
if (symbol) symbols.set(key, symbol);
if (badge) badges.set(key, badge);
};
Object.values(IndicationType).forEach((key: IndicationType): void => {
const option = list.get(key);
if (Array.isArray(option)) {
set(key, ...option);
} else if (typeof option === 'string') {
colors.set(key, option);
} else if (typeof option === 'object') {
const { color, symbol, badge } = option;
set(key, color, symbol, badge);
}
});
}
}
public static type(status: TaskStatus, isList = false): IndicationType {
let type: IndicationType;
switch (status) {
case TaskStatus.Completed:
type = IndicationType.Success;
break;
case TaskStatus.Skipped:
type = IndicationType.Skip;
break;
case TaskStatus.Failed:
type = IndicationType.Error;
break;
case TaskStatus.Pending:
default:
type = isList ? IndicationType.List : IndicationType.Active;
break;
}
return type;
}
public static join(separator: string, ...text: string[]): string {
return text.filter((value): boolean => !!value.length).join(separator);
}
public static dye(str: string, color: string): string {
return color ? chalk.hex(color)(str) : str;
}
public static indent(count: number, ...text: string[]): string {
return `${Theme.INDENT.padStart(count * Indent.Default)}${Theme.join(Wrapper.SPACE, ...text)}`;
}
public static format(template: string): string {
return template ? chalk(Object.assign([], { raw: [template.replace(/`/g, '\\`')] })) : '';
}
private static getValueBy<T>(map: Map<IndicationType, T>, type: IndicationType, getDefault: () => T): T {
let result = map.get(type);
if (!result) result = getDefault();
return result;
}
public getColor(type: IndicationType): string {
const { colors } = this;
return Theme.getValueBy(this.colors, type, (): string => {
if (type === IndicationType.Active) return IndicationColor.Active;
if (type === IndicationType.Success) return IndicationColor.Success;
if (type === IndicationType.Skip) return IndicationColor.Skip;
if (type === IndicationType.Error) return IndicationColor.Error;
if (type === IndicationType.Message) return IndicationColor.Message;
if (type === IndicationType.Info) return IndicationColor.Info;
if (type === IndicationType.Warning) return IndicationColor.Warning;
if (type === IndicationType.Subtask) return IndicationColor.Subtask;
if (type === IndicationType.List) return IndicationColor.List;
if (type === IndicationType.Dim) return IndicationColor.Dim;
return colors.get(IndicationType.Default) || IndicationColor.Default;
});
}
public paint(str: string, type: IndicationType): string {
return Theme.dye(Theme.format(str), this.getColor(type));
}
public gradient(str: string, gradient: Gradient): string {
const begin = convert.hex.rgb(this.getColor(gradient.begin));
const end = convert.hex.rgb(this.getColor(gradient.end));
const w = gradient.position * 2 - 1;
const w1 = (w + 1) / 2.0;
const w2 = 1 - w1;
return Theme.dye(
str,
convert.rgb.hex([
Math.round(end[0] * w1 + begin[0] * w2),
Math.round(end[1] * w1 + begin[1] * w2),
Math.round(end[2] * w1 + begin[2] * w2),
])
);
}
public symbol(type: IndicationType): string {
const { symbols } = this;
const symbol = Theme.getValueBy(symbols, type, (): string => {
if (type === IndicationType.Active) return frame();
if (type === IndicationType.Success) return Figures.tick;
if (type === IndicationType.Skip) return Figures.arrowDown;
if (type === IndicationType.Error) return Figures.cross;
if (type === IndicationType.Message) return Figures.line;
if (type === IndicationType.Info) return Figures.info;
if (type === IndicationType.Warning) return Figures.warning;
if (type === IndicationType.Subtask) return Figures.pointerSmall;
if (type === IndicationType.List) return Figures.pointer;
return symbols.get(IndicationType.Default) || this.symbol(IndicationType.Subtask);
});
return symbol ? this.paint(symbol, type) : symbol;
}
public badge(type: IndicationType): string {
const { badges } = this;
const badge = Theme.getValueBy(badges, type, (): string => {
if (type === IndicationType.Error) return IndicationBadge.Error;
if (type === IndicationType.Skip) return IndicationBadge.Skip;
return badges.get(IndicationType.Default) || IndicationBadge.Default;
});
return badge ? this.paint(badge, IndicationType.Dim) : badge;
}
public title(task: Task, level: number): string {
const type = Theme.type(task.getStatus(), task.haveSubtasks());
const badge = this.badge(type);
const symbol = this.symbol(type);
let prefix = Wrapper.EMPTY;
if (level)
prefix = task.haveSubtasks() ? this.symbol(IndicationType.Subtask) : this.symbol(IndicationType.Default);
return Theme.indent(level, prefix, symbol, task.getText(), badge);
}
public errors(errors: string[], level: number): string[] {
const type = IndicationType.Error;
const sublevel = level + Indent.Long;
return errors.reduce<string[]>((acc, text): string[] => {
const [error, ...lines] = text.split(Terminal.EOL);
const title = Theme.join(
Wrapper.SPACE,
this.symbol(IndicationType.Message),
this.symbol(type),
error.trim()
);
return acc.concat([
Theme.indent(level + 1, this.paint(title, type)),
...lines.map((line): string => Theme.indent(sublevel, this.paint(line.trim(), IndicationType.Dim))),
]);
}, []);
}
public messages(list: string[], type: IndicationType, level: number): string[] {
const symbol = this.symbol(type);
const sign = this.symbol(IndicationType.Message);
const indent = level + 1;
return list.map((text): string => Theme.indent(indent, sign, symbol, text));
}
public bars(list: ProgressBar[], level: number): string[] {
const symbol = this.symbol(IndicationType.Subtask);
return list
.filter((bar): boolean => !bar.isCompleted() || !bar.clear)
.map((bar): string => Theme.indent(level, symbol, bar.render(this)));
}
}