embark/lib/monitor.js

/*jshint esversion: 6 */

var blessed = require("blessed");

var CommandHistory = function() {
  this.history = [];
  this.pointer = -1;
};

CommandHistory.prototype.addCommand = function(cmd) {
  this.history.push(cmd);
  this.pointer = this.history.length;
};

CommandHistory.prototype.getPreviousCommand = function(cmd) {
  if (this.pointer >= 0) {
    this.pointer--;
  }
  return this.history[this.pointer];
};

CommandHistory.prototype.getNextCommand = function(cmd) {
  if (this.pointer >= this.history.length) {
    this.pointer = this.history.length - 1;
    return '';
  }
  this.pointer++;
  return this.history[this.pointer];
};

function Dashboard(options) {
  var title = options && options.title || "Embark 2.0";
  this.env = options.env;
  this.console = options.console;
  this.history = new CommandHistory();

  this.color = options && options.color || "green";
  this.minimal = options && options.minimal || false;

  this.screen = blessed.screen({
    smartCSR: true,
    title: title,
    dockBorders: false,
    fullUnicode: true,
    autoPadding: true
  });

  this.layoutLog.call(this);
  this.layoutStatus.call(this);
  this.layoutModules.call(this);
  this.layoutCmd.call(this);

  this.screen.key(["C-c"], function() {
    process.exit(0);
  });

  this.logEntry     = this.logEntry.bind(this);
  this.setContracts = this.setContracts.bind(this);
  this.availableServices = this.availableServices.bind(this);

  this.status.setContent(this.env.green);

  this.screen.render();
  this.input.focus();
}

Dashboard.prototype.availableServices = function(services) {
  this.progress.setContent(services.join('\n'));
  this.screen.render();
};

Dashboard.prototype.setStatus = function(status) {
  this.operations.setContent(status);
  this.screen.render();
};

Dashboard.prototype.setContracts = function(contracts) {
  var data = [];

  data.push(["Contract Name", "Address", "Status"]);

  contracts.forEach(function(row) {
    data.push(row);
  });

  this.moduleTable.setData(data);
  this.screen.render();
};

Dashboard.prototype.logEntry = function(text) {
  this.logText.log(text);
  this.screen.render();
};

Dashboard.prototype.layoutLog = function() {
  this.log = blessed.box({
    label: "Logs",
    padding: 1,
    width: "100%",
    height: "55%",
    left: "0%",
    top: "42%",
    border: {
      type: "line"
    },
    style: {
      fg: -1,
      border: {
        fg: this.color
      }
    }
  });

  this.logText = blessed.log({
    parent: this.log,
    tags: true,
    width: "100%-5",
    //height: '90%',
    scrollable: true,
    input: false,
    alwaysScroll: true,
    scrollbar: {
      ch: " ",
      inverse: true
    },
    keys: false,
    vi: false,
    mouse: true
  });

  this.screen.append(this.log);
};

Dashboard.prototype.layoutModules = function() {
  this.modules = blessed.box({
    label: "Contracts",
    tags: true,
    padding: 1,
    width: "75%",
    height: "42%",
    left: "0%",
    top: "0",
    border: {
      type: "line"
    },
    style: {
      fg: -1,
      border: {
        fg: this.color
      }
    }
  });

  this.moduleTable = blessed.table({
    parent: this.modules,
    height: "100%",
    width: "100%-5",
    align: "left",
    pad: 1,
    margin: "auto",
    shrink: true,
    scrollable: true,
    alwaysScroll: true,
    scrollbar: {
      ch: " ",
      inverse: true
    },
    keys: false,
    vi: false,
    mouse: true,
    data: [["ContractName", "Address", "Status"]]
  });

  this.screen.append(this.modules);
};

Dashboard.prototype.layoutAssets = function() {
  this.assets = blessed.box({
    label: "Asset Pipeline",
    tags: true,
    padding: 1,
    width: "50%",
    height: "55%",
    left: "50%",
    top: "42%",
    border: {
      type: "line"
    },
    style: {
      fg: -1,
      border: {
        fg: this.color
      }
    }
  });

  this.assetTable = blessed.table({
    parent: this.assets,
    height: "100%",
    width: "100%-5",
    align: "left",
    pad: 1,
    scrollable: true,
    alwaysScroll: true,
    scrollbar: {
      ch: " ",
      inverse: true
    },
    keys: false,
    vi: false,
    mouse: true,
    data: [["Name", "Size"]]
  });

  this.screen.append(this.assets);
};

Dashboard.prototype.layoutStatus = function() {

  this.wrapper = blessed.layout({
    width: "25%",
    height: "42%",
    top: "0%",
    left: "75%",
    layout: "grid"
  });

  this.status = blessed.box({
    parent: this.wrapper,
    label: "Environment",
    tags: true,
    padding: {
      left: 1
    },
    width: "100%",
    height: "20%",
    valign: "middle",
    border: {
      type: "line"
    },
    style: {
      fg: -1,
      border: {
        fg: this.color
      }
    }
  });

  this.operations = blessed.box({
    parent: this.wrapper,
    label: "Status",
    tags: true,
    padding: {
      left: 1
    },
    width: "100%",
    height: "20%",
    valign: "middle",
    border: {
      type: "line"
    },
    style: {
      fg: -1,
      border: {
        fg: this.color
      }
    }
  });

  this.progress = blessed.box({
    parent: this.wrapper,
    label: "Available Services",
    tags: true,
    padding: this.minimal ? {
      left: 1
    } : 1,
    width: "100%",
    height: "60%",
    valign: "top",
    border: {
      type: "line"
    },
    style: {
      fg: -1,
      border: {
        fg: this.color
      }
    }
  });

  this.screen.append(this.wrapper);
};


Dashboard.prototype.layoutCmd = function() {
  this.consoleBox = blessed.box({
    label: 'Console',
    tags: true,
    padding: 0,
    width: '100%',
    height: '6%',
    left: '0%',
    top: '95%',
    border: {
      type: 'line'
    },
    style: {
      fg: 'black',
      border: {
        fg: this.color
      }
    }
  });

  this.input = blessed.textbox({
    parent: this.consoleBox,
    name: 'input',
    input: true,
    keys: false,
    top: 0,
    left: 1,
    height: '50%',
    width: '100%-2',
    inputOnFocus: true,
    style: {
      fg: 'green',
      bg: 'black',
      focus: {
        bg: 'black',
        fg: 'green'
      }
    }
  });

  var self = this;

  this.input.key(["C-c"], function() {
    process.exit(0);
  });

  this.input.key(["C-w"], function() {
    self.input.clearValue();
    self.input.focus();
  });

  this.input.key(["up"], function() {
    var cmd = self.history.getPreviousCommand();
    self.input.setValue(cmd);
    self.input.focus();
  });

  this.input.key(["down"], function() {
    var cmd = self.history.getNextCommand();
    self.input.setValue(cmd);
    self.input.focus();
  });

  this.input.on('submit', function(data) {
    if (data !== '') {
      self.history.addCommand(data);
      self.logText.log('console> '.bold.green + data);
      self.console.executeCmd(data, function(result) {
        self.logText.log(result);
      });
    }
    self.input.clearValue();
    self.input.focus();
  });

  this.screen.append(this.consoleBox);
};

module.exports = Dashboard;