Division.js

fs = require("fs")
maxDivisions = 10
maxShips = 10
divisionFile = "./division.json"
if(!archive.exists(divisionFile)){
    fs.writeFileSync(divisionFile,"{}")
}
/*
Format of Divisions.json:
{"userid1":{{"name":"division1","ships":[shipids]},{"name":"division2","ships":[shipids]}},"userid2":{{"name":"division1","ships":[shipids]},{"name":"division2","ships":[shipids]}}}

Returning:
    div(object) = success
    error01     = to many divisions
    error02     = to many ships
    error03     = no such division
    error04     = no divisions
*/
this.createDivision = function(id,name,ships){
    div = archive.read(divisionFile)
    if(!div[id]){div[id] = id}
    if(Object.keys(div[id].length)>=maxDivisions){return "error01"}
    if(ships.length>maxShips){return "error02"}
    div[id][Object.keys(div[id]).length+1].name = name
    div[id][Object.keys(div[id]).length+1].ships = ships
    archive.write(divisionFile,div)
    return div
}

this.renameDivision = function(id,divNr,name){
    div = archive.read(divisionFile)
    if(!div[id]){return "error04"}
    if(!div[id][divNr]){return "error03"}
    div[id][divNr].name=name
    archive.write(divisionFile,div)
    return div
}

this.editDivision = function(id,divNr,ships){
    div = archive.read(divisionFile)
    if(ships.length>maxShips){return "error02"}
    if(!div[id][divNr]){return "error03"}
    div[id][divNr].ships = ships
    archive.write(divisionFile,div)
    return div
}

this.getDivision = function(id){
    div = archive.read(divisionFile)
    if(!div[id]){return "error04"}
    return div[id]
}

class archive{
    read(file){
        return JSON.parse(fs.readFileSync(file))
    }
    write(file,object){
        fs.writeFileSync(file,JSON.stringify(object))
        return true
    }
    exists(file){
        fs.stat(file,(err,stats)=>{
            if(err){return err}
            if(stats.isFile()){return true}
        })
    }
}