import { AES, SHA1, enc } from  "crypto-js";
import { environment } from 'src/environments/environment'


function prefix() {
    return environment.version.lastCommitNumber + environment.id+"-";
}

export function GET({key, instance}) {
    if(environment.storageProduction) {

        try {
            const newKey = prefix() + SHA1(key).toString()
            const cipherText = localStorage.getItem(newKey)
            const bytes = AES.decrypt(cipherText, newKey)
            var decryptedData = bytes.toString(enc.Utf8);
            const restoredData = JSON.parse(decryptedData)

            Object.assign(instance, restoredData);
            
            return restoredData
            
        } catch(error) {
            console.log(error)
            return {}
        }
        
    } else {
        const newKey = prefix() + key
        const restoredData = JSON.parse(localStorage.getItem(newKey))
        Object.assign(instance, restoredData);

        return restoredData
    }
    
}

export function SAVE({key, instance, dataToSave}) {
    if(environment.storageProduction) {
        const newKey = prefix() + SHA1(key).toString()   
        const stringifyData  = JSON.stringify(dataToSave)

        const cipherText = AES.encrypt(stringifyData, newKey).toString();

        localStorage.setItem(newKey, cipherText)

    } else {
        const stringifyData  = JSON.stringify(dataToSave)
        const newKey = prefix() + key

        localStorage.setItem(newKey, stringifyData)
    }
}

export function DELETE({key, instance}) {
    if(environment.storageProduction) {
        const newKey = prefix() + SHA1(key).toString()
        localStorage.removeItem(newKey)

    } else {
        const newKey = prefix() + key
        localStorage.removeItem(newKey)
    }
}