/*
Copyright (C) 2017  Cloudbase Solutions SRL
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

// @flow

import cookie from 'js-cookie'
import moment from 'moment'

import Api from '../utils/ApiCaller'
import { servicesUrl } from '../config'
import DateUtils from '../utils/DateUtils'
import type { Schedule } from '../types/Schedule'

class ScheduleSource {
  static scheduleSinge(replicaId: string, scheduleData: Schedule): Promise<Schedule> {
    let projectId = cookie.get('projectId')
    let payload = {
      schedule: {},
      expiration_date: null,
      enabled: scheduleData.enabled === null || scheduleData.enabled === undefined ? false : scheduleData.enabled,
      shutdown_instance: scheduleData.shutdown_instances === null || scheduleData.shutdown_instances === undefined ? false : scheduleData.shutdown_instances,
    }

    if (scheduleData.expiration_date) {
      // $FlowIssue
      payload.expiration_date = moment(scheduleData.expiration_date).toISOString()
    }

    if (scheduleData.schedule !== null && scheduleData.schedule !== undefined) {
      Object.keys(scheduleData.schedule).forEach(prop => {
        // $FlowIssue
        if (scheduleData.schedule[prop] !== null && scheduleData.schedule[prop] !== undefined) {
          payload.schedule[prop] = scheduleData.schedule[prop]
        }
      })
    }

    return Api.send({
      url: `${servicesUrl.coriolis}/${projectId || 'null'}/replicas/${replicaId}/schedules`,
      method: 'POST',
      data: payload,
    }).then(response => response.data.schedule)
  }

  static scheduleMultiple(replicaId: string, schedules: Schedule[]): Promise<Schedule[]> {
    return Promise.all(schedules.map(schedule => {
      return ScheduleSource.scheduleSinge(replicaId, schedule)
    }))
  }

  static getSchedules(replicaId: string): Promise<Schedule[]> {
    let projectId = cookie.get('projectId')

    return Api.get(`${servicesUrl.coriolis}/${projectId || 'null'}/replicas/${replicaId}/schedules`).then(response => {
      let schedules = [...response.data.schedules]
      schedules.forEach(s => {
        if (s.expiration_date) {
          s.expiration_date = DateUtils.getLocalTime(s.expiration_date)
        }
        if (s.shutdown_instance) {
          s.shutdown_instances = s.shutdown_instance
        }
      })
      schedules.sort((a, b) => moment(a.created_at).diff(b.created_at))
      return schedules
    })
  }

  static addSchedule(replicaId: string, schedule: Schedule): Promise<Schedule> {
    let projectId = cookie.get('projectId')
    let payload = {
      schedule: { hour: 0, minute: 0 },
      enabled: false,
    }
    if (schedule && schedule.schedule) {
      payload.schedule = { ...schedule.schedule }
    }

    return Api.send({
      url: `${servicesUrl.coriolis}/${projectId || 'null'}/replicas/${replicaId}/schedules`,
      method: 'POST',
      data: payload,
    }).then(response => response.data.schedule)
  }

  static removeSchedule(replicaId: string, scheduleId: string): Promise<void> {
    let projectId = cookie.get('projectId')
    return Api.send({
      url: `${servicesUrl.coriolis}/${projectId || 'null'}/replicas/${replicaId}/schedules/${scheduleId}`,
      method: 'DELETE',
    }).then(() => { })
  }

  static updateSchedule(
    replicaId: string,
    scheduleId: string,
    scheduleData: Schedule,
    scheduleOldData: ?Schedule,
    unsavedData: ?Schedule
  ): Promise<Schedule> {
    let projectId = cookie.get('projectId')
    let payload = {}
    if (scheduleData.enabled !== null && scheduleData.enabled !== undefined) {
      payload.enabled = scheduleData.enabled
    }
    if (scheduleData.shutdown_instances !== null && scheduleData.shutdown_instances !== undefined) {
      payload.shutdown_instance = scheduleData.shutdown_instances
    }
    if (unsavedData && unsavedData.expiration_date) {
      payload.expiration_date = moment(unsavedData.expiration_date).toISOString()
    }
    if (unsavedData && unsavedData.schedule !== null && unsavedData.schedule !== undefined && Object.keys(unsavedData.schedule).length) {
      if (scheduleOldData) {
        payload.schedule = { ...scheduleOldData.schedule }
      }
      // $FlowIssue
      Object.keys(unsavedData.schedule).forEach(prop => {
        // $FlowIssue
        if (unsavedData.schedule[prop] !== null && unsavedData.schedule[prop] !== undefined) {
          payload.schedule[prop] = unsavedData.schedule[prop]
        } else {
          delete payload.schedule[prop]
        }
      })
    }

    return Api.send({
      url: `${servicesUrl.coriolis}/${projectId || 'null'}/replicas/${replicaId}/schedules/${scheduleId}`,
      method: 'PUT',
      data: payload,
    }).then(response => {
      let s = { ...response.data.schedule }
      if (s.expiration_date) {
        s.expiration_date = DateUtils.getLocalTime(s.expiration_date)
      }
      if (s.shutdown_instance) {
        s.shutdown_instances = s.shutdown_instance
      }
      return s
    })
  }
}

export default ScheduleSource