chore:Created BackendAPI schemas

specification/backendapi.yaml

+---
+openapi: 3.0.3
+servers:
+    - url: 'http/localhost'
+info:
+    title: InventoryBackend
+    version: 0.1.0
+    description: Category-Based Inventory information for Thea's Pantry.
+    contact:
+        name: Thea's Pantry
+        email: info@librefoodpantry.org
+        url: librefoodpantry.org
+tags:
+    - name: inventory
+      description: Category Based Inventory to Thea's Pantry
+    - name: version
+      description: API version
+paths:
+    /inventory:
+      get:
+        description: Gets an array of the categories in the inventory
+        tags:
+        - inventory
+        operationId: getInventory
+        responses:
+          '200':
+            description: OK
+            content:
+              application.json:
+                schema:
+                  $ref: '#/components/schemas/Inventory'
+          '401':
+            $ref: '#/components/responses/Unauthorized'
+          '500':
+            $ref: '#/components/responses/ServerError'
+      post:
+        description: Creates a category
+        tags:
+        - inventory
+        operationId: createCategory
+        x-eov-operation-handler: endpoints
+        requestBody:
+          content:
+            application/json:
+              example:
+                id: I001
+                name : Beverages
+                stock: 120
+              schema:
+                $ref: '#/components/schemas/Category'
+        responses:
+          '201':
+            content:
+              application/json:
+                schema:
+                  $ref: '#/components/schemas/Category'
+            description: Created
+          '400':
+            $ref: '#/components/responses/BadRequest'
+          '409':
+            $ref: '#/components/responses/Conflict'
+          '500':
+            $ref: '#/components/responses/ServerError'
+    '/inventory/{categoryName}':
+      description: Specific category in inventory
+      parameters:
+        - name: categoryName
+          in: path    
+          required: true
+          description: Name of the category
+          schema:
+            $ref: '#/components/schemas/CategoryName'
+      put:
+        description: Updates a Category
+        tags:
+        - inventory
+        operationId: updateCategory
+        x-eov-operation-handler:
+        requestBody:
+          content:
+            application/json:
+              example:
+                id: I001
+                name : Beverages
+                stock: 120
+              schema:
+                $ref: '#/components/schemas/Category'
+        responses:
+          '201':
+            content:
+              application/json:
+                schema:
+                  $ref: '#/components/schemas/Category'
+            description: Created
+          '400':
+            $ref: '#/components/responses/BadRequest'
+          '500':
+            $ref: '#/components/responses/ServerError'
+      get:
+        description: Gets the category in the inventory
+        tags:
+        - inventory
+        operationId: getCategory
+        responses:
+          '200':
+            description: OK
+            content:
+              application.json:
+                schema:
+                  $ref: '#/components/schemas/Category'
+          '401':
+            $ref: '#/components/responses/Unauthorized'
+          '500':
+            $ref: '#/components/responses/ServerError'
+
+      delete:
+        description: Deletes a category
+        tags:
+        - inventory
+        operationId: deleteCategory
+        responses:
+          '200':
+            description: OK
+          '400':
+            $ref: '#/components/responses/BadRequest'
+          '401':
+            $ref: '#/components/responses/Unauthorized'
+          '404':
+            $ref: '#/components/responses/NotFound'
+          '500':
+            $ref: '#/components/responses/ServerError'
+    /version:
+      get:
+        description: Get current API version number
+        tags:
+          - inventory
+        operationId: getAPIVersion
+        x-eov-operation-handler: endpoints
+        responses:
+          '200':
+            description: OK
+            content:
+              application/json:
+                schema:
+                  $ref: '#/components/schemas/APIVersion'
+          '500':
+              $ref: '#/components/responses/ServerError'
+components:
+  responses:
+    Conflict:
+      description: Object already exists
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/EovError'
+    Unauthorized:
+      description: No valid token was found
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/EovError'
+    BadRequest:
+      description: Request was malformed
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/EovError'    
+    ServerError:
+      description: There was an error in the servers
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/EovError'
+    NotFound:
+      description: The specified resource was not found
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/EovError'
+  schemas:
+    EovError:
+      description: Not Acceptable
+      type: object
+      example:
+        message: '.response should have required property''name'', .response should have required property ''id'''
+        errors:
+          - path: .response.name
+            message: should have required property 'name'
+            errorCode: required.openapi.validation
+          - path: .response.id
+            message: should have required property 'id'
+            errorCode: required.openapi.validation
+    CategoryId:
+      description: Database's Id for the category
+      type: string
+    CategoryName:
+      description: Name of the category
+      type: string
+    CategoryStock:
+      description: COunt of the stock of the category
+      type: integer
+    Category: 
+      example: 
+        id: I001
+        name: Beverages
+        stock: 5
+      properties:
+        id:
+          $ref: '#/components/schemas/CategoryId'
+        name:
+          $ref: '#/components/schemas/CategoryName'
+        stock:
+          $ref: '#/components/schemas/CategoryStock'
+      required:
+        - id
+        - name
+        - stock
+    Inventory:      
+      description: Collection of the categories
+      type: array
+      nullable: false
+      items:
+        $ref: '#/components/schemas/Category'
+    APIVersion:
+      example: 1.2.3
+      description: Current operating version of the API
+      # yamllint disable-line rule:line-length
+      pattern: ^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$
+      type: string