From 0bf30ab160a409e532af6c513630900bebd549d6 Mon Sep 17 00:00:00 2001
From: dangoodman <dangoodman@users.noreply.github.com>
Date: Fri, 31 Aug 2018 20:40:02 +0300
Subject: [PATCH] Add support for the JSON MySQL type

MySQL supports the JSON type since 5.7.8 which is a nice way to store and work with nested documents.
---
 lib/types.js        |  9 +++++++++
 test/specs/types.js | 13 +++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/lib/types.js b/lib/types.js
index bd0f9c0..1cf5e20 100644
--- a/lib/types.js
+++ b/lib/types.js
@@ -66,6 +66,15 @@ const NATIVE_TYPES = {
       val = val.replace(controlRegex, '')
       return val
     }
+  },
+  'JSON': {
+    type: 'JSON',
+    convert: val => {
+      if (val === null || val === undefined) {
+        return null
+      }
+      return sqlstring.escape(JSON.stringify(val))
+    }
   }
 }
 
diff --git a/test/specs/types.js b/test/specs/types.js
index 4dcc1c6..a783308 100644
--- a/test/specs/types.js
+++ b/test/specs/types.js
@@ -79,4 +79,17 @@ describe('Momy Types', () => {
     assert.equal(convert(undefined), "''")
     assert.equal(convert('\x07'), "''") // skip a control char
   })
+
+  it('JSON', () => {
+    const convert = NATIVE_TYPES.JSON.convert
+    assert.equal(convert(null), null)
+    assert.equal(convert(undefined), null)
+    assert.equal(convert({a: null, b: undefined}), '\'{\\"a\\":null}\'')
+    assert.equal(convert(true), '\'true\'')
+    assert.equal(convert(false), '\'false\'')
+    assert.equal(convert('string'), '\'\\"string\\"\'')
+    assert.equal(convert([1, 2, '3']), '\'[1,2,\\"3\\"]\'')
+    assert.equal(convert({age: 1, name: 'John', ids: [5, 10, 15]}), '\'{\\"age\\":1,\\"name\\":\\"John\\",\\"ids\\":[5,10,15]}\'')
+    assert.equal(convert('\x07\r\n\t'), '\'\\"\\\\u0007\\\\r\\\\n\\\\t\\"\'') // escape control chars
+  })
 })