From ddf67bf6489c3c5f8e41c87d7f3a295823dcf712 Mon Sep 17 00:00:00 2001
From: spalger <email@spalger.com>
Date: Fri, 11 Nov 2016 13:23:58 -0700
Subject: [PATCH] [build] ask for kibana version when set to "kibana"

Original commit: elastic/kibana-plugin-helpers@5fe34c47aeaa11a26ed5c63341847bf4b888b22a
---
 packages/kbn-plugin-helpers/package.json      |  2 +
 .../tasks/build/build_action.js               | 90 +++++++++++++++----
 2 files changed, 73 insertions(+), 19 deletions(-)

diff --git a/packages/kbn-plugin-helpers/package.json b/packages/kbn-plugin-helpers/package.json
index 9ab289544bec..d2a6e0fcf23b 100644
--- a/packages/kbn-plugin-helpers/package.json
+++ b/packages/kbn-plugin-helpers/package.json
@@ -20,6 +20,8 @@
     "commander": "^2.9.0",
     "gulp-rename": "1.2.2",
     "gulp-zip": "3.1.0",
+    "inquirer": "^1.2.2",
+    "through2-map": "^3.0.0",
     "vinyl-fs": "2.3.1"
   },
   "directories": {
diff --git a/packages/kbn-plugin-helpers/tasks/build/build_action.js b/packages/kbn-plugin-helpers/tasks/build/build_action.js
index 047915ad4401..4099bd89d4e2 100644
--- a/packages/kbn-plugin-helpers/tasks/build/build_action.js
+++ b/packages/kbn-plugin-helpers/tasks/build/build_action.js
@@ -2,30 +2,82 @@ module.exports = function (plugin) {
 
   var vfs = require('vinyl-fs');
   var zip = require('gulp-zip');
+  var map = require('through2-map').obj;
   var rename = require('gulp-rename');
   var join = require('path').join;
+  var inquirer = require('inquirer');
 
-  var deps = Object.keys(plugin.pkg.dependencies || {});
-  var buildId = `${plugin.id}-${plugin.version}`;
+  function main() {
+    var kibanaVersion = (plugin.pkg.kibana && plugin.pkg.kibana.version) || plugin.pkg.version;
+    var deps = Object.keys(plugin.pkg.dependencies || {});
+    var buildId = `${plugin.id}-${plugin.version}`;
 
-  var files = [
-    'package.json',
-    'index.js',
-    '{lib,public,server,webpackShims}/**/*'
-  ];
-
-  if (deps.length === 1) {
-    files.push(`node_modules/${ deps[0] }/**/*`);
-  } else {
-    files.push(`node_modules/{${ deps.join(',') }}/**/*`);
+    if (kibanaVersion === 'kibana') {
+      askForKibanaVersion(function (customKibanaVersion) {
+        build(buildId, deps, customKibanaVersion);
+      });
+    } else {
+      build(buildId, deps, kibanaVersion);
+    }
   }
 
-  vfs
-    .src(files, { base: plugin.root })
-    .pipe(rename(function nestFileInDir(path) {
-      path.dirname = join('kibana', plugin.id, path.dirname);
-    }))
-    .pipe(zip(`${buildId}.zip`))
-    .pipe(vfs.dest(join(plugin.root, 'build')));
+  function askForKibanaVersion(cb) {
+    inquirer.prompt([
+      {
+        type: 'input',
+        name: 'kibanaVersion',
+        message: 'What version of Kibana are you building for?'
+      }
+    ]).then(function (answers) {
+      cb(answers.kibanaVersion);
+    });
+  }
 
+  function toBuffer(string) {
+    if (typeof Buffer.from === 'function') {
+      return Buffer.from(string, 'utf8');
+    } else {
+      // this was deprecated in node v5 in favor
+      // of Buffer.from(string, encoding)
+      return new Buffer(string, 'utf8');
+    }
+  }
+
+  function build(deps, kibanaVersion) {
+    var files = [
+      'package.json',
+      'index.js',
+      '{lib,public,server,webpackShims}/**/*'
+    ];
+
+    if (deps.length === 1) {
+      files.push(`node_modules/${ deps[0] }/**/*`);
+    } else {
+      files.push(`node_modules/{${ deps.join(',') }}/**/*`);
+    }
+
+    vfs
+      .src(files, { base: plugin.root })
+
+      // rewrite the target kibana version while the
+      // file is on it's way to the archive
+      .pipe(map(function (file) {
+        if (file.basename === 'package.json') {
+          const pkg = JSON.parse(file.contents.toString('utf8'));
+          if (!pkg.kibana) pkg.kibana = {};
+          pkg.kibana.version = kibanaVersion;
+          file.contents = toBuffer(JSON.stringify(pkg));
+        }
+
+        return file;
+      }))
+
+      // put all files inside the correct directoried
+      .pipe(rename(function nestFileInDir(path) {
+        path.dirname = join('kibana', plugin.id, path.dirname);
+      }))
+
+      .pipe(zip(`${buildId}.zip`))
+      .pipe(vfs.dest(join(plugin.root, 'build')));
+  }
 };