Task.js

import moment from 'moment'

import { STARTED, PAUSED, IN_PROGRESS, FINISHED } from './constants'
import { recognizeModifierTiming, inPeriod, getSeconds } from './utils'
import { cliError } from './output'
import { EINPROGRESS } from 'constants'

export default class Task {
    constructor(task) {
        this.task = task
            ? task
            : {
                  description: '',
                  timings: []
              }
        this.filtered = false
    }

    _modifyTiming(time, operation) {
        let timing = this.task.timings[this.task.timings.length - 1]
        if (!timing) {
            throw `This task is not started, start it.`
        }

        let newStop = moment(timing.stop)
        newStop = newStop[operation](time.value, time.momentKey)

        if (operation === 'subtract' && newStop.isBefore(timing.start)) {
            throw 'You cant subtract more time'
            return
        }

        this.task.timings[this.task.timings.length - 1].stop = newStop
    }

    start(description) {
        return new Promise((resolve, reject) => {
            let started = false

            let timing = this.task.timings[this.task.timings.length - 1]

            if (timing && timing.start && !timing.stop) {
                reject(this.error(`This task already started.`))
            }

            this.task.timings.push({
                start: moment().toDate()
            })

            this.setDescription(description)
            this.setStatus(IN_PROGRESS)
            this.log('start')
            resolve()
        })
    }

    pause() {
        return new Promise((resolve, reject) => {
            let timing = this.task.timings[this.task.timings.length - 1]

            if (!timing) {
                reject(this.error(`This task is not started, start it.`))
            }

            if (timing && timing.start && timing.stop) {
                reject(this.error(`This task are ended/paused, unpaused it.`))
            }

            this.task.timings[
                this.task.timings.length - 1
            ].stop = moment().toDate()
            this.setStatus(PAUSED)
            this.log('pause')
            resolve()
        })
    }

    unpause() {
        return new Promise((resolve, reject) => {
            let timing = this.task.timings[this.task.timings.length - 1]
            if (!timing) {
                reject(this.error(`This task is not started, start it`))
            }

            if (timing && timing.start && !timing.stop) {
                reject(this.error(`This task is started, pause/stop first`))
            }

            this.task.timings.push({
                start: moment().toDate()
            })
            this.setStatus(IN_PROGRESS)
            this.log('unpause')
            resolve()
        })
    }

    stop(description) {
        return new Promise((resolve, reject) => {
            let timing = this.task.timings[this.task.timings.length - 1]
            if (!timing || (timing && !timing.start)) {
                reject(this.error(`This task is not started, start it`))
            }

            if (timing.start && timing.stop) {
                reject(this.error(`This task already ended, start/unpause it.`))
            }

            this.task.timings[
                this.task.timings.length - 1
            ].stop = moment().toDate()
            this.setDescription(description)
            this.setStatus(FINISHED)
            this.log('stop')
            resolve()
        })
    }

    log(operation) {
        if (!this.task.log) {
            this.task.log = []
        }

        this.task.log.push(`${operation}#${moment().toISOString()}`)
    }

    description() {
        return this.task.description
    }

    setDescription(text) {
        this.task.description = text
            ? text
            : this.task.description ? this.task.description : ''
    }

    setStatus(status) {
        this.task.status = status
    }

    makeOperationOverTime(operation, stringTime) {
        return new Promise((resolve, reject) => {
            let parsed = recognizeModifierTiming(stringTime)

            try {
                parsed.map(t => {
                    this._modifyTiming(t, operation)
                })
            } catch (err) {
                console.error(err)
                reject(this.error(`Error trying to ${operation} time to task`))
            }
            this.log(`${operation}:${stringTime}`)

            resolve()
        })
    }

    get() {
        return this.task
    }

    filterByDates(start, end) {
        if (this.task.timings) {
            if (start && end) {
                this.task.timings = this._filterTimingsByDate(start, end)
            } else if (start) {
                end = moment().format('YYYY/MM/DD')
                this.task.timings = this._filterTimingsByDate(start, end)
            } else if (end) {
                start = moment(0).format('YYYY/MM/DD')
                this.task.timings = this._filterTimingsByDate(start, end)
            }

            if (this.task.timings.length === 0) {
                this.filtered = true
            }
        } else {
            let t = inPeriod(this.task.start, this.task.stop, start, end)
            if (t.isBetween) {
                this.task.start = t.start
                this.task.stop = t.stop
            } else {
                this.filtered = true
            }
        }

        return this
    }

    _filterTimingsByDate(start, end) {
        return this.task.timings.reduce((acc, val) => {
            let t = inPeriod(val.start, val.stop, start, end)
            if (t.isBetween) {
                acc.push({
                    start: t.start,
                    stop: t.stop
                })
            }
            return acc
        }, [])
    }

    getSeconds() {
        let duration = 0

        if (this.task.timings) {
            this.task.timings.forEach(timing => {
                duration += getSeconds(timing)
            })
        } else {
            duration = getSeconds(this.task)
        }

        return duration
    }

    getStartDate() {
        if (this.task.timings && this.task.timings[0]) {
            return this.task.timings[0].start
        } else {
            return this.task.start
        }
    }

    getEndDate() {
        if (this.task.timings) {
            return this.task.timings[this.task.timings.length - 1].stop
        } else if (this.task.stop) {
            return this.task.stop
        } else {
            return moment().toDate()
        }
    }

    error(err) {
        return err //+ ` \n Task: ${JSON.stringify(this.task)}`
    }
}