From 83d5cf1bd54a42063bccdb5b874b457ebd46258c Mon Sep 17 00:00:00 2001
From: Stephen Hess <stephen.k.hess@gmail.com>
Date: Tue, 18 Jul 2017 15:44:52 -0400
Subject: [PATCH] added ServiceConfiguration for Language call

---
 service/configurations/Language.js           |  33 ++++
 test/unit/run.js                             |   1 +
 test/unit/service/configurations/Language.js | 157 +++++++++++++++++++
 3 files changed, 191 insertions(+)
 create mode 100644 service/configurations/Language.js
 create mode 100644 test/unit/service/configurations/Language.js

diff --git a/service/configurations/Language.js b/service/configurations/Language.js
new file mode 100644
index 00000000..e0c2f04a
--- /dev/null
+++ b/service/configurations/Language.js
@@ -0,0 +1,33 @@
+'use strict';
+
+const url = require('url');
+
+const _ = require('lodash');
+
+const ServiceConfiguration = require('pelias-microservice-wrapper').ServiceConfiguration;
+
+class Language extends ServiceConfiguration {
+  constructor(o) {
+    super('placeholder.language', o);
+  }
+
+  getParameters(req, res) {
+    // find all the values for all keys with names that end with '_id'
+    const ids = _.get(res, 'data', []).reduce((acc, doc) => {
+      Array.prototype.push.apply(acc, _.values(_.pickBy(doc.parent, (v, k) => _.endsWith(k, '_id') ) ) );
+      return acc;
+    }, []);
+
+    return {
+      ids: _.uniq(ids)
+    };
+
+  }
+
+  getUrl(req) {
+    return url.resolve(this.baseUrl, 'parser/findbyid');
+  }
+
+}
+
+module.exports = Language;
diff --git a/test/unit/run.js b/test/unit/run.js
index e616231e..1071f474 100644
--- a/test/unit/run.js
+++ b/test/unit/run.js
@@ -95,6 +95,7 @@ var tests = [
   require('./sanitizer/search'),
   require('./sanitizer/defer_to_addressit'),
   require('./sanitizer/wrap'),
+  require('./service/configurations/Language'),
   require('./service/configurations/PlaceHolder'),
   require('./service/configurations/PointInPolygon'),
   require('./service/mget'),
diff --git a/test/unit/service/configurations/Language.js b/test/unit/service/configurations/Language.js
new file mode 100644
index 00000000..bf3b62e6
--- /dev/null
+++ b/test/unit/service/configurations/Language.js
@@ -0,0 +1,157 @@
+module.exports.tests = {};
+
+const Language = require('../../../../service/configurations/Language');
+
+module.exports.tests.all = (test, common) => {
+  test('getName should return \'placeholder.language\'', (t) => {
+    const configBlob = {
+      url: 'http://localhost:1234',
+      timeout: 17,
+      retries: 19
+    };
+
+    const language = new Language(configBlob);
+
+    t.equals(language.getName(), 'placeholder.language');
+    t.equals(language.getBaseUrl(), 'http://localhost:1234/');
+    t.equals(language.getTimeout(), 17);
+    t.equals(language.getRetries(), 19);
+    t.end();
+
+  });
+
+  test('getUrl should return value passed to constructor', (t) => {
+    const configBlob = {
+      url: 'http://localhost:1234',
+      timeout: 17,
+      retries: 19
+    };
+
+    const language = new Language(configBlob);
+
+    t.equals(language.getUrl(), 'http://localhost:1234/parser/findbyid');
+    t.end();
+
+  });
+
+  test('getParameters should return object with all deduped ids extracted from res', (t) => {
+    const configBlob = {
+      url: 'http://localhost:1234',
+      timeout: 17,
+      retries: 19
+    };
+
+    const language = new Language(configBlob);
+
+    const res = {
+      data: [
+        {
+          parent: {
+            layer1_name: 'layer1 name',
+            layer1_id: 1,
+            layer2_name: 'layer2 name',
+            layer2_id: 2
+          }
+        },
+        {
+          // empty parent
+          parent: {}
+        },
+        {
+          // no parent
+        },
+        {
+          parent: {
+            layer3_name: 'layer3 name',
+            layer3_id: 3,
+            layer4_name: 'layer4 name',
+            // doesn't end with '_id', will be ignored
+            layer4id: 4
+          }
+        },
+        {
+          parent: {
+            layer1_name: 'layer1 name',
+            // this is a duplicate id
+            layer1_id: 1,
+            layer5_name: 'layer5 name',
+            layer5_id: 5
+          }
+        }
+      ]
+    };
+
+    t.deepEquals(language.getParameters(undefined, res), { ids: [1, 2, 3, 5] });
+    t.end();
+
+  });
+
+  test('getParameters should return empty ids array when res is undefined', (t) => {
+    const configBlob = {
+      url: 'http://localhost:1234',
+      timeout: 17,
+      retries: 19
+    };
+
+    const language = new Language(configBlob);
+
+    t.deepEquals(language.getParameters(undefined, undefined), { ids: [] });
+    t.end();
+
+  });
+
+  test('getParameters should return empty ids array when res.data is undefined', (t) => {
+    const configBlob = {
+      url: 'http://localhost:1234',
+      timeout: 17,
+      retries: 19
+    };
+
+    const res = { };
+
+    const language = new Language(configBlob);
+
+    t.deepEquals(language.getParameters(undefined, res), { ids: [] });
+    t.end();
+
+  });
+
+  test('getHeaders should return empty object', (t) => {
+    const configBlob = {
+      url: 'base url',
+      timeout: 17,
+      retries: 19
+    };
+
+    const language = new Language(configBlob);
+
+    t.deepEquals(language.getHeaders(), {});
+    t.end();
+
+  });
+
+  test('baseUrl ending in / should not have double /\'s return by getUrl', (t) => {
+    const configBlob = {
+      url: 'http://localhost:1234/',
+      timeout: 17,
+      retries: 19
+    };
+
+    const language = new Language(configBlob);
+
+    t.deepEquals(language.getUrl(), 'http://localhost:1234/parser/findbyid');
+    t.end();
+
+  });
+
+};
+
+module.exports.all = (tape, common) => {
+  function test(name, testFunction) {
+    return tape(`SERVICE CONFIGURATION /Language ${name}`, testFunction);
+  }
+
+  for( var testCase in module.exports.tests ){
+    module.exports.tests[testCase](test, common);
+  }
+};