var mkdirp = require('mkdirp');
var wrench = require('wrench');

var Blockchain = function() {
};

Blockchain.prototype.run = function(options) {
  this.env = env;

  //var address = this.get_address();
  var address = this.initChainAndGetAddress(options);
  console.log("running: " + this.run_command(address, false));
  exec(this.run_command(address, false));
  //this.runChain(address, options);
};

Blockchain.prototype.initChainAndGetAddress = function(options) {
  var address = null, result;

  // ensure datadir exists, bypassing the interactive liabilities prompt.
  this.datadir = '.embark/development/datadir';
  mkdirp.sync(this.datadir);
  wrench.copyDirSyncRecursive(__dirname + "/../js", ".embark/development/js", {forceDelete: true});

  console.log("running: " + this.list_command());
  result = exec(this.list_command());

  if (result.output === undefined || result.output === '' || result.output.indexOf("Fatal") >= 0) {
    //if (config.genesisBlock !== void 0) {
      console.log("initializing genesis block");
      console.log("running: " + this.generate_genesis_init_command());
      result = exec(this.generate_genesis_init_command());
    //}

    console.log("running: " + this.init_command());
    result = exec(this.init_command());
    address = result.output.match(/{(\w+)}/)[1];
  } else {
    console.log("=== already initialized");
    address = result.output.match(/{(\w+)}/)[1];
  }

  return address;
};

Blockchain.prototype.generate_genesis_init_command = function() {
  //var config = this.config;

  var cmd = "geth ";

  //if (config.datadir !== "default") {
  cmd += "--datadir=\"" + this.datadir + "\" ";
  //}

  //cmd += "init \"" + config.genesisBlock + "\" ";
  cmd += "init \"" + "./config/development/genesis.json" + "\" ";

  return cmd;
};

Blockchain.prototype.init_command = function() {
  return this.generate_init_command() + "account new ";
};

Blockchain.prototype.generate_init_command = function() {
  //var config = this.config;
  //var address = config.account.address;

  var cmd = "geth ";

  //if (config.datadir !== "default") {
    cmd += "--datadir=\"" + this.datadir + "\" ";
  //}

  //if (config.account.password !== void 0) {
    cmd += "--password " + './config/development/password' + " ";
  //}

  return cmd;
};

Blockchain.prototype.generate_basic_command = function() {
  var config = this.config;
  //var address = config.account.address;

  var cmd = "geth ";
  var rpc_api = ['eth', 'web3'];

  //if (config.datadir !== "default") {
    cmd += "--datadir=\"" + this.datadir + "\" ";
  //}

  //if (config.testnet) {
  //  cmd += "--testnet ";
  //}

  //if (config.account.password !== void 0) {
    //cmd += "--password " + config.account.password + " ";
    cmd += "--password " + "./config/development/password" + " ";
  //}

  cmd += "--port " + "30303" + " ";
  cmd += "--rpc ";
  cmd += "--rpcport " + 8545 + " ";
  cmd += "--rpcaddr " + "localhost" + " ";
  cmd += "--networkid " + "12301" + " ";
  cmd += "--rpccorsdomain=\"" + "*" + "\" ";

  //cmd += "--port " + config.port + " ";
  //cmd += "--rpc ";
  //cmd += "--rpcport " + config.rpcPort + " ";
  //cmd += "--rpcaddr " + config.rpcHost + " ";
  //cmd += "--networkid " + config.networkId + " ";
  //cmd += "--rpccorsdomain=\"" + config.rpcWhitelist + "\" ";

  //if (config.minerthreads !== void 0) {
  //  cmd += "--minerthreads \"" + config.minerthreads + "\" ";
  //}

  //if(config.mine_when_needed || config.mine)
    cmd += "--mine ";

  //if (config.whisper) {
    cmd += "--shh ";
    rpc_api.push('shh');
  //}

  cmd += '--rpcapi "' + rpc_api.join(',') + '" ';

  //TODO: this should be configurable
  //cmd += "--maxpeers " + config.maxPeers + " ";

  return cmd;
};

Blockchain.prototype.list_command = function() {
  return this.generate_init_command() + "account list ";
};

Blockchain.prototype.run_command = function(address, use_tmp) {
  var cmd = this.generate_basic_command();
  //var config = this.config;

  //if (address !== void 0) {
    cmd += "--unlock=" + address + " ";
  //}

  cmd += "js .embark/development/js/mine.js";
  //if (config.mine_when_needed) {
  //  if (use_tmp) {
  //    cmd += "js /tmp/js/mine.js";
  //  }
  //  else {
  //    cmd += "js node_modules/embark-framework/js/mine.js";
  //  }
  //}

  return cmd;
};

Blockchain.prototype.startChain = function(use_tmp) {
  var address = this.get_address();
  console.log("running: " + this.run_command(address, use_tmp));
  exec(this.run_command(address, use_tmp));
};

Blockchain.prototype.getStartChainCommand = function(use_tmp) {
  var address = this.get_address();
  return this.run_command(address, use_tmp);
};


var BlockchainClient = function(client) {
  if (client === 'geth') {
    return new Blockchain();
  } else {
    throw new Error('unknown client');
  }
};

module.exports = BlockchainClient;