sinProject-Inc/talk

import { Repository } from '$lib/app/repository'
import { SettingKey } from '$lib/app/setting_key'

export class LifeTime {
    private readonly _millisecond: number

    private constructor(life_time_millisecond: number) {
        if (life_time_millisecond <= 0) {
            throw new Error('life_time_millisecond must be greater than 0')
        }

        this._millisecond = life_time_millisecond
    }

    private static async _from_setting(setting_key: SettingKey): Promise<LifeTime> {
        const life_time_seconds = await Repository.app_setting.get_number(setting_key)
        const life_time_millisecond = life_time_seconds * 1000

        return new LifeTime(life_time_millisecond)
    }

    public static async generate_session(): Promise<LifeTime> {
        return await LifeTime._from_setting(SettingKey.session_lifetime_sec)
    }

    public static async generate_pin_code(): Promise<LifeTime> {
        return await LifeTime._from_setting(SettingKey.pin_code_lifetime_sec)
    }

    public static generate_zero(): LifeTime {
        return new LifeTime(0)
    }

    public get millisecond(): number {
        return this._millisecond
    }

    public get second(): number {
        return this._millisecond / 1000
    }

    public get limit_date(): Date {
        const now = new Date().getTime()
        const limit = new Date(now - this._millisecond)

        return limit
    }
}