import {
    IMachine,
    IDeployedDirectory,
    IOldSavedApp
} from '../models/storage/StoredObjects'
import * as ConfigStore from 'configstore'
import Utils from './Utils'

const CAP_MACHINES = 'CapMachines'
const DEPLOYED_DIRS = 'DeployedDirs'

export default class StorageHelper {
    static instance: StorageHelper

    static get() {
        if (!StorageHelper.instance) {
            StorageHelper.instance = new StorageHelper()
        }
        return StorageHelper.instance
    }

    private data: ConfigStore

    constructor() {
        this.data = new ConfigStore('caprover')
    }

    getMachines(): IMachine[] {
        return Utils.copyObject(this.data.get(CAP_MACHINES) || [])
    }

    findMachine(machineName: string) {
        return this.getMachines().find(m => m.name === machineName)
    }

    removeMachine(machineName: string) {
        const machines = this.getMachines()
        const removedMachine = machines.filter(
            machine => machine.name === machineName
        )[0]
        const newMachines = machines.filter(
            machine => machine.name !== machineName
        )
        this.data.set(CAP_MACHINES, newMachines)

        return removedMachine
    }

    saveMachine(machineToSaveOrUpdate: IMachine) {
        const currMachines = this.getMachines()
        let updatedMachine = false
        for (let index = 0; index < currMachines.length; index++) {
            const element = currMachines[index]
            if (element.name === machineToSaveOrUpdate.name) {
                updatedMachine = true
                currMachines[index] = machineToSaveOrUpdate
                break
            }
        }

        if (!updatedMachine) {
            currMachines.push(machineToSaveOrUpdate)
        }

        this.data.set(CAP_MACHINES, currMachines)
    }

    getDeployedDirectories(): IDeployedDirectory[] {
        return Utils.copyObject(this.data.get(DEPLOYED_DIRS) || [])
    }

    saveDeployedDirectory(directoryToSaveOrUpdate: IDeployedDirectory) {
        if (
            !directoryToSaveOrUpdate ||
            !directoryToSaveOrUpdate.appName ||
            !directoryToSaveOrUpdate.cwd ||
            !directoryToSaveOrUpdate.machineNameToDeploy
        ) {
            return
        }

        const currDirs = this.getDeployedDirectories()
        let updatedDir = false
        for (let index = 0; index < currDirs.length; index++) {
            const element = currDirs[index]
            if (element.cwd === directoryToSaveOrUpdate.cwd) {
                updatedDir = true
                currDirs[index] = directoryToSaveOrUpdate
                break
            }
        }

        if (!updatedDir) {
            currDirs.push(directoryToSaveOrUpdate)
        }

        this.data.set(DEPLOYED_DIRS, currDirs)
    }
}