"use strict";
var okmail = function() {
    LocalContractStorage.defineMapProperty(this, "account")
    LocalContractStorage.defineMapProperty(this, "names")
    LocalContractStorage.defineMapProperty(this, "mail")
    LocalContractStorage.defineMapProperty(this, "myMail")
    LocalContractStorage.defineProperty(this, "mailCounter", null)
}

okmail.prototype = {
    init: function() {
        this.mailCounter = 0
    },
    createAccount: function(name) {
        var from = Blockchain.transaction.from;
        name = name.trim() + "@okmail";
        if (name === "") {
            throw new Error("Name must contain at least 1 symbol.");
        }
        if (this.account.get(from)) {
            throw new Error("You have already created account.");
        }
        if (this.names.get(name)) {
            throw new Error("This name is already taken.");
        }
        this.names.set(name, from)

        this.account.set(from, name)

        from = this.account.get(from)
        this.mail.set(from, { inbox: [], outbox: [] })
        return true
    },
    sendMessage: function(to, title, text) {
        var from = Blockchain.transaction.from;
        if (!this.account.get(from)) {
            throw new Error("You haven't created account yet.");
        }
        if (!this.names.get(to)) {
            throw new Error("This recipient doesn't exist.");
        }
        var date = new Date();
        date = date.toString();
        from = this.account.get(from)
        var mailCounter = new BigNumber(this.mailCounter).plus(1)

        this.mailCounter = mailCounter

        var inboxFrom = this.mail.get(from).inbox
        var outboxFrom = this.mail.get(from).outbox

        var inboxTo = this.mail.get(to).inbox
        var outboxTo = this.mail.get(to).outbox

        var msg = {
            id: mailCounter,
            from: from,
            to: to,
            title: title,
            text: text,
            date: date,
            isSpam: false,
            isMarked: false
        }

        inboxTo.push(msg)
        outboxFrom.push(msg)

        this.mail.set(from, { inbox: inboxFrom, outbox: outboxFrom })
        this.mail.set(to, { inbox: inboxTo, outbox: outboxTo })

        return true
    },
    loadMail: function() {
        var from = Blockchain.transaction.from;
        if (!this.account.get(from)) {
            throw new Error("You haven't created account yet.");
        }
        from = this.account.get(from)

        return this.mail.get(from)

    },
    delMsgById: function(msgId) {
        var from = Blockchain.transaction.from;
        if (!this.account.get(from)) {
            throw new Error("You haven't created account yet.");
        }
        from = this.account.get(from)
        msgId = Number.parseInt(msgId)

        var inboxFrom = this.mail.get(from).inbox
        var outboxFrom = this.mail.get(from).outbox

        if (inboxFrom.length > 0) {
            for (var i = 0; i < inboxFrom.length; i++) {

                if (inboxFrom[i].id === msgId) {
                    inboxFrom.splice(i, 1)
                }

            }
        }
        if (outboxFrom.length > 0) {
            for (var i = 0; i < outboxFrom.length; i++) {

                if (outboxFrom[i].id === msgId) {
                    outboxFrom.splice(i, 1)
                }

            }
        }

        this.mail.set(from, { inbox: inboxFrom, outbox: outboxFrom })
        return true

    }
}

module.exports = okmail