export enum DID_COMMANDS {
    CREATE_DID = "createDID",
    ADD_KEYPAIR = "addKeyPair",
    ADD_SERVICEPOINT = "addServicePoint"
}

export interface DIDTx {
    "version" : string;
    "command" : DID_COMMANDS;
    "data" : {}; //Interface?
    "proof" : {}; //Interface?
    //TODO add proof
}

interface publicKey {
    "id" : string;
    "type" : string; //TODO Change this into an enum of supported types in this resolver?
    "owner" : string;
    "publicKeyPem" : string; //TODO: Generic or support the different public key parameters?
}

interface authentication {
    "type" : string; //TODO Change this into an enum of supported types in this resolver?
    "publicKey" : string;
}

export interface ServicePoint {
    "id" : string;
    "type" : string;
    "serviceEndpoint" : string
}


export class DID{
    private context : string;
    private id : string;
    private authenticationProtocol: authentication[];
    private publicKeys : publicKey[];
    private servicePoints : ServicePoint[];

    constructor(context:string,id:string,authentication:authentication[], publicKey: publicKey[]){
        this.context = context;
        this.id = id;
        this.authenticationProtocol = authentication;
        this.publicKeys = publicKey;
        this.servicePoints = [];
    }

    public getContext(){
        return this.context;
    }

    public getId(){
        return this.id;
    }

    public addAuthentication(type:string,publicKey:string){
        this.authenticationProtocol.push({type,publicKey});
    }

    public removeAuthentication(index: number){
        if(index < this.authenticationProtocol.length)
            delete this.authenticationProtocol[index];
    } 

    public getAuthentication(){
        return this.authenticationProtocol;
    }

    public addPublicKey(id:string,type:string, owner:string,publicKeyPem:string){
        this.publicKeys.push({id,type,owner,publicKeyPem});
    }

    public removePublicKey(index: number){
        if(index < this.publicKeys.length)
            delete this.publicKeys[index];
    } 

    public getPublicKey(){
        return this.publicKeys;
    }

    public getJson() {
        return JSON.stringify({
            "@context":this.context,
            "id":this.id,
            "publicKey": this.publicKeys,
            "authentication": this.authenticationProtocol,
            "service" : this.servicePoints
        })
    }

    public AddServicePoint(servicePoint : ServicePoint ) {
        this.servicePoints.push(servicePoint);
    }

    public getServicePoints() : ServicePoint[] {
        return this.servicePoints;
    }
}