From 1c6064a4b240b4198afa277308328a184a7e5bbb Mon Sep 17 00:00:00 2001
From: Alexey Khristov <alexmail2@gmail.com>
Date: Tue, 30 Dec 2014 17:09:51 +0200
Subject: [PATCH] add --config option and read default pm2-gui.json file

---
 README.md    | 19 +++++++++++++++---
 bin/pm2-gui  | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++-
 package.json |  2 +-
 3 files changed, 70 insertions(+), 5 deletions(-)

diff --git a/README.md b/README.md
index 546bfb3..2d8c885 100644
--- a/README.md
+++ b/README.md
@@ -76,15 +76,17 @@ $ npm install -g pm2-gui
 
     -h, --help  output usage information
     --no-debug  hide stdout/stderr information
+    --config    path to custom .json config. Default value pm2-gui.json
 ```
 
 <a name="cli_confs" />
 ## Configs
 ```javascript
 {
-  "refresh": 3000
-  "manipulation": true
-  "pm2": "~/.pm2"
+  "refresh": 3000,
+  "manipulation": true,
+  "pm2": "~/.pm2",
+  "port": 8088
 }
 ```
 
@@ -92,6 +94,17 @@ $ npm install -g pm2-gui
 - **manupulation** A value indicates whether the client has permission to restart/stop processes, `true` by default.
 - **pm2** Root directory of Unitech/PM2, `~/.pm2` by default.
 - **password** The encrypted authentication code, if this config is set, users need to be authorized before accessing the index page.
+- **port** Web GUI port, can be set only from config file
+
+### Config file
+Config file can be set with option --config
+
+Example
+```bash
+$ pm2-gui start --config pm2-gui.json
+```
+
+If config name pm2-gui.json - option can be omitted
 
 ### Set Config
 Usage
diff --git a/bin/pm2-gui b/bin/pm2-gui
index 2b93160..efae12c 100755
--- a/bin/pm2-gui
+++ b/bin/pm2-gui
@@ -2,6 +2,7 @@
 
 var commander = require('commander'),
     path      = p = require('path'),
+    fs        = require('fs'),
     chalk     = require('chalk'),
     _         = require('lodash'),
     pkg       = require('../package.json'),
@@ -25,17 +26,68 @@ commander.on('-c', function(){
   console.log(arguments);
 })
 
+var defaultConfigFileName = 'pm2-gui.json';
+var acceptKeys = ['pm2', 'refresh', 'manipulation', 'password'];
 
 // Web interface
 commander.command('start [port]')
+  .option('--config <file>', 'pass json config file with options')
   .option('--no-debug', 'hide stdout/stderr information')
   .description('Launch the web server, port default by 8088')
   .action(function(port, cmd){
+
+    function setupOptions(jsonConfig) {
+      var mon = Monitor();
+      var passwordKeyName = acceptKeys[acceptKeys.length - 1];
+      acceptKeys.forEach(function(keyName) {
+        var value = jsonConfig[keyName];
+        if (!value) {
+          return;
+        }
+        if (keyName === passwordKeyName) {
+          var md5 = crypto.createHash('md5');
+          md5.update(value);
+          value = md5.digest('hex');
+        }
+        mon.config(keyName, value);
+      });
+    }
+
+    var configData;
+    if (cmd.config){ //if config file passed
+
+      try {
+        configData = fs.readFileSync(cmd.config);
+      } catch (e) {
+        if (e.code === 'ENOENT') {
+          console.log('Config file %s not found', cmd.config);
+          process.exit(1);
+        } else {
+          console.log('Error read config file %s, error: %j', cmd.config, err);
+          process.exit(2);
+        }
+      }
+    } else {
+      try {
+        configData = fs.readFileSync(defaultConfigFileName);
+      } catch (e) {}
+    }
+
+    try {
+      var jsonConfig = JSON.parse(configData);
+      setupOptions(jsonConfig);
+    } catch (e) {
+      console.log('Cant convert file %s to JSON', cmd.config);
+      process.exit(3);
+    }
+
+    if (!port && jsonConfig.port) { // setup port from config file
+      port = jsonConfig.port;
+    }
     interface(port, cmd.debug);
   });
 
 // Configuration
-var acceptKeys = ['pm2', 'refresh', 'manipulation', 'password'];
 function showConfigs(cmd, mon){
   if (!mon) {
     mon = Monitor();
diff --git a/package.json b/package.json
index 432c5b8..48015e7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pm2-gui",
-  "version": "0.0.7",
+  "version": "0.0.8",
   "description": "An elegant web interface for Unitech/PM2.",
   "scripts": {
   },