Fix validator issues with ein and service_code and oneOf:,const:, if: (#889)

* Fix validator issues with ein and service_code and oneOf:,const:, if:

Disallow CSTM-00 with POS codes
Constrain valid EIN values
Fix issue with missing anchor on the ein/tin validation pattern

* Fix indentation in negotiated_price service_code

* Fix JSON indentation & formatting in in-network-rates.json

* Allow NPI Field to be [0] (a single entry containing zero)

To handle :  https://github.com/CMSgov/price-transparency-guide/tree/master/schemas/in-network-rates#additional-notes

"In contractual arrangements that are only made at the TIN level, where NPIs are unknown or otherwise unavailable, the value "0" should be reported for the NPI field."

This change does not permit a "0" value in the Tax "Tax Identifier Object's when type is "npi".  Because npi does not require business name, I propose allowing a "0" type "ein" in the unusual scenario where a provider only has an SSN, along with requiring the business name.  I posted an issue regarding this scenario here :   #890 (comment)

Tests are failing because they are out of date. Once merged, I'll fix whatever conflicts may result.

Author: clovis517

schemas/in-network-rates/in-network-rates.json

@@ -127,19 +127,24 @@
       "type": "object",
       "properties": {
         "service_code": {
-          "type": "array",
-          "items": {
-            "type": "string",
-            "oneOf": [
-              {
-                "pattern": "^([1-9][0-9]|[0-9][1-9])$"
+          "oneOf": [
+            {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "pattern": "^(0[1-9]|1[0-9]|2[0-7]|3[1-4]|4[1-2]|4[9]|5[0-8]|6[0-2]|6[5-6]|7[1-2]|81|99)$"
               },
-              {
-                "const": "CSTM-00"
-              }
-            ]
-          },
-          "uniqueItems": true
+              "uniqueItems": true
+            },
+            {
+              "type": "array",
+              "items": {
+                "type": "string",
+                "pattern": "^CSTM-00$"
+              },
+              "maxItems": 1
+            }
+          ]
         },
         "billing_class": {
           "enum": [
@@ -214,53 +219,66 @@
       "type": "object",
       "properties": {
         "npi": {
-          "type": "array",
-          "items": {
-            "type": "number"
-          },
-          "uniqueItems": true,
-          "default": [],
-          "minItems": 1
+          "oneOf": [
+            {
+              "type": "array",
+              "items": {
+                "type": "number",
+                "minimum": 1000000000,
+                "maximum": 9999999999
+              },
+              "uniqueItems": true,
+              "minItems": 1
+            },
+            {
+              "type": "array",
+              "items": {
+                "type": "number",
+                "minimum": 0,
+                "maximum": 0
+              },
+              "minItems": 1,
+              "maxItems": 1
+            }
+          ]
         },
         "tin": {
           "type": "object",
           "properties": {
             "type": {
-              "type": "string",
-              "enum": [
-                "ein",
-                "npi"
-              ]
+              "type": "string"
             },
             "value": {
-              "type": "string",
-              "minLength": 1
+              "type": "string"
             },
             "business_name": {
               "type": "string",
               "minLength": 1
             }
           },
-          "if": {
-            "properties": {
-              "type": {
-                "const": "ein"
-              }
-            }
-          },
-          "then": {
-            "properties": {
-              "value": {
-                "pattern": "\\d{2}-?\\d{7}"
-              }
+          "oneOf": [
+            {
+              "properties": {
+                "type": {
+                  "pattern": "^ein$"
+                },
+                "value": {
+                  "pattern": "^[0-9]{2}-?[0-9]{7}$"
+                }
+              },
+              "required": ["type", "value", "business_name"]
             },
-            "required": [
-              "business_name"
-            ]
-          },
-          "required": [
-            "type",
-            "value"
+            {
+              "properties": {
+                "type": {
+                  "pattern": "^npi$"
+                },
+                "value": {
+                  "pattern": "^[1-9][0-9]{9}$"
+                }
+              },
+              "required": ["type", "value"]
+            }
           ]
         }
       },
@@ -437,4 +455,4 @@
       "plan_id"
     ]
   }
-}
+}