import * as plugins from "./cert.plugins";
import * as paths from "./cert.paths";
import * as helpers from "./cert.helpers"

export interface ICertConstructorOptions {
    cfEmail: string,
    cfKey: string,
    sslDir?: string,
    gitOriginRepo?: string,
    testMode?: boolean
};

export class Cert {
    private _cfEmail: string;
    private _cfKey: string;
    private _sslDir: string;
    private _gitOriginRepo: string;
    private _testMode: boolean;
    domainsCurrentlyRequesting: plugins.lik.Stringmap = new plugins.lik.Stringmap();
    certificatesPresent: Certificate[];
    certificatesValid: Certificate[];

    /**
     * Constructor for Cert object
     */
    constructor(optionsArg: ICertConstructorOptions) {
        this._cfEmail = optionsArg.cfEmail;
        this._cfKey = optionsArg.cfKey;
        this._sslDir = optionsArg.sslDir;
        this._gitOriginRepo = optionsArg.gitOriginRepo;
        this._testMode = optionsArg.testMode;
        // write hook config
        let config = {
            cfEmail: this._cfEmail,
            cfKey: this._cfKey
        }
        plugins.smartfile.memory.toFsSync(
            JSON.stringify(config),
            plugins.path.join(__dirname, "assets/config.json")
        );
        // setup sslDir
        if (!this._sslDir) this._sslDir = paths.defaultSslDir;
        // setup Git
        if (this._gitOriginRepo) {
            plugins.smartgit.init(this._sslDir);
            plugins.smartgit.remote.add(this._sslDir, "origin", this._gitOriginRepo);
            this.sslGitOriginPull();
        }
        // setup leSh config;
        let leShConfigString;
        if (this._testMode) {
            leShConfigString = `CA="https://acme-staging.api.letsencrypt.org/directory"\n`;
        } else {
            leShConfigString = " ";
        };
        plugins.smartfile.memory.toFsSync(
            leShConfigString,
            paths.leShConfig
        );
        plugins.shelljs.exec("chmod 700 " + paths.letsencryptSh);
        plugins.shelljs.exec("chmod 700 " + paths.certHook);
    };

    /**
     * Pulls already requested certificates from git origin
     */
    sslGitOriginPull = () => {
        if (this._gitOriginRepo) {
            plugins.smartgit.pull(this._sslDir, "origin", "master");
        }
    };

    /**
     * Pushes all new requested certificates to git origin
     */
    sslGitOriginAddCommitPush = () => {
        if (this._gitOriginRepo) {
            plugins.smartgit.add.addAll(this._sslDir);
            plugins.smartgit.commit(this._sslDir, "added new SSL certificates and deleted obsolete ones.");
            plugins.smartgit.push(this._sslDir, "origin", "master");
        }
    };

    /**
     * gets a ssl cert for a given domain
     */
    getDomainCert(domainNameArg: string, optionsArg: { force: boolean } = { force: false }) {
        let done = plugins.q.defer();
        // make sure no one else requires the same domain at the same time
        helpers.accountsKeyPresent().then(() => {
            if (!this.domainsCurrentlyRequesting.checkString(domainNameArg)) {
                this.domainsCurrentlyRequesting.addString(domainNameArg);
                if (!checkDomainsStillValid(domainNameArg, this._sslDir) || optionsArg.force) {
                    plugins.smartfile.fs.ensureDir(paths.certDir);
                    plugins.beautylog.info(`getting cert for ${domainNameArg}`);
                    plugins.shelljs.exec(
                        `bash -c "${paths.letsencryptSh} -c --no-lock -f ${paths.leShConfig} -d ${domainNameArg} -t dns-01 -k ${paths.certHook} -o ${paths.certDir}"`,
                        {
                            silent: true
                        },
                        (codeArg, stdoutArg) => {
                            if (codeArg == 0) {
                                console.log(stdoutArg);
                                let fetchedCertsArray: string[] = plugins.smartfile.fs.listFoldersSync(paths.certDir);
                                if (fetchedCertsArray.indexOf(domainNameArg) != -1) {
                                    updateSslDirSync(this._sslDir, domainNameArg);
                                    plugins.smartfile.fs.removeSync(plugins.path.join(paths.certDir, domainNameArg));
                                }
                                this.domainsCurrentlyRequesting.removeString(domainNameArg);
                                done.resolve();
                            } else {
                                this.domainsCurrentlyRequesting.removeString(domainNameArg);
                                plugins.beautylog.warn(`${domainNameArg} scheduled for retry`);
                                helpers.scheduleRetry(domainNameArg,this).then(done.resolve);
                            }
                        }
                    );
                } else {
                    plugins.beautylog.info("certificate for " + domainNameArg + " is still valid! Not fetching new one!");
                    this.domainsCurrentlyRequesting.removeString(domainNameArg);
                    done.resolve();
                };
            } else {
                plugins.beautylog.warn(`${domainNameArg} is already requesting`);
            };
        });

        return done.promise;
    };
    cleanOldCertificates() {

    };
}

export class Certificate {
    domainName: string;
    creationDate: Date;
    expiryDate: Date;
    constructor() {

    };
}

interface certConfig {
    domainName: string;
    created: number;
    expires: number;
}

let checkDomainsStillValid = (domainNameArg: string, sslDirArg: string): boolean => {
    let domainConfigPath = plugins.path.join(sslDirArg, domainNameArg, "config.json");
    if (plugins.smartfile.fs.fileExistsSync(domainConfigPath)) {
        let domainConfig = plugins.smartfile.fs.toObjectSync(
            domainConfigPath,
            "json"
        );
        if (Date.now() >= ((domainConfig.expires - 604800) * 1000)) {
            return false;
        } else {
            return true;
        }
    } else {
        return false;
    }

}

let updateSslDirSync = (sslDirArg: string, domainNameArg: string) => {
    plugins.smartfile.fs.ensureDirSync(sslDirArg);
    let domainCertFolder = plugins.path.join(paths.certDir, domainNameArg)
    if (plugins.smartfile.fs.listFoldersSync(paths.certDir).indexOf(domainNameArg) != -1) {
        plugins.smartfile.fs.copySync(
            plugins.path.join(domainCertFolder, "fullchain.pem"),
            plugins.path.join(sslDirArg, domainNameArg, "fullchain.pem")
        );
        plugins.smartfile.fs.copySync(
            plugins.path.join(domainCertFolder, "privkey.pem"),
            plugins.path.join(sslDirArg, domainNameArg, "privkey.pem")
        );
        // create cert config
        let certRegex = /.*\-([0-9]*)\.pem/;
        let certFileNameWithTime: string = plugins.smartfile.fs.listFilesSync(domainCertFolder, certRegex)[0];
        let certTime = parseInt(certRegex.exec(certFileNameWithTime)[1]);
        let certConfig: certConfig = {
            domainName: domainNameArg,
            created: certTime,
            expires: certTime + 7776000
        };
        plugins.smartfile.memory.toFsSync(
            JSON.stringify(certConfig),
            plugins.path.join(sslDirArg, domainNameArg, "config.json")
        );
    };
}

const enum gitSyncDirection {
    toOrigin,
    fromOrigin
}

let updateGitOrigin = (syncDirectionArg: gitSyncDirection) => {

};

updateGitOrigin(gitSyncDirection.toOrigin);