import chalk from 'chalk'
import loading from 'loading-cli'
/**
 * 指示日志消息的严重性。
 * 日志级别按严重性递增的顺序排列。所以“Debug”比“Trace”等更严重。
 *
 */
export enum LogLevel {
    /** 成功. */
    Success = 'success',
    /** 警告. */
    Warning = 'warning',
    /** 错误. */
    Error = 'error',
    /** 调试信息 */
    Debug = 'debug',
    /** 消息 */
    Info = 'info'
}

/** 日志工具 */
export default class Logger {
    /** loading 工具 */
    private load: loading.Loading

    loading = {
        start: (text: string = '正在加载...', color: string = 'yellow') => {
            if (this.load) this.load.stop()
            this.load = loading({
                text: chalk.cyan(`[ys-cli]`) + ` ${text}`,
                color,
                interval: 50,
                frames: ['◐', '◓', '◑', '◒']
            }).start()
        },
        stop: () => {
            this.load.stop()
            delete this.load
        },
        update: (text: string, color?: string) => {
            if (!text) return
            this.load.text = text
            if (color) this.load.color = color
        }
    }

    private getLogColor(logLevel: LogLevel) {
        switch (logLevel) {
            case LogLevel.Error:
                return '#ed4014'
            case LogLevel.Warning:
                return '#ff9900'
            case LogLevel.Info:
                return '#76aad8'
            case LogLevel.Success:
                return '#19be6b'
            case LogLevel.Debug:
            default:
                return '#ffa940'
        }
    }
    /** point log */
    private log(logLevel: LogLevel, ...msg: any): void {
        console.log(
            chalk.cyan(`[ys-cli]`),
            chalk.hex('#787778')(`(${chalk.hex(this.getLogColor(logLevel)).underline(logLevel)})`),
            chalk.hex('#d3d3d3')(...msg)
        )
    }

    success(...msg: any) {
        this.log(LogLevel.Success, ...msg)
    }

    error(...msg: any) {
        this.log(LogLevel.Error, ...msg)
    }

    warn(...msg: any) {
        this.log(LogLevel.Warning, ...msg)
    }

    debug(...msg: any) {
        this.log(LogLevel.Debug, ...msg)
    }

    info(...msg: any) {
        this.log(LogLevel.Info, ...msg)
    }
}

export const logger: Logger = new Logger()