/*
 * Copyright (c) 2018 - present.  Boling Consulting Solutions (bcsw.net)
 * Copyright 2020-present Open Networking Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * NOTE: This file was generated, manual edits will be overwritten!
 *
 * Generated by 'goCodeGenerator.py':
 *              https://github.com/cboling/OMCI-parser/README.md
 */

package generated

import (
	"encoding/json"
	"fmt"
	"github.com/stretchr/testify/assert"
	"io/ioutil"
	"os"
	"strconv"
	"strings"
	"testing"
)

func TestClassIDMap(t *testing.T) {
	for classID, function := range classToManagedEntityMap {
		managedEntity, omciError := function()

		assert.NotNil(t, managedEntity)
		assert.Equal(t, omciError.StatusCode(), Success)

		assert.Equal(t, classID, managedEntity.GetClassID())
		assert.NotNil(t, managedEntity.GetManagedEntityDefinition())
	}
}

func TestAllAttributeNamesMatch(t *testing.T) {
	// Load test JSON Class and Attribute Name file
	//     NOTE: This JSON file should never be updated as it is used to verify
	//           that attribute name constants never change between versions
	//
	type attributeEntry struct {
		Name      string `json:"Name"`
		CamelCase string `json:"CamelCase"`
		Final     string `json:"Final"`
		Index     uint   `json:"Index"`
	}
	type classEntry struct {
		Name       string                    `json:"Name"`
		Filename   string                    `json:"Filename"`
		CamelCase  string                    `json:"CamelCase"`
		ClassID    uint16                    `json:"ClassID"`
		Attributes map[string]attributeEntry `json:"Attributes"`
	}
	//cwd, getErr := os.Getwd()
	//assert.NoError(t, getErr)
	//assert.NotNil(t, cwd)
	inputFile := "./attrNames_test.json"
	input, err := os.Open(inputFile)
	assert.NoError(t, err)
	assert.NotNil(t, input)
	defer input.Close()

	inputJson, err2 := ioutil.ReadAll(input)
	assert.NoError(t, err2)
	assert.NotNil(t, inputJson)

	var classEntries map[string]classEntry

	err = json.Unmarshal([]byte(inputJson), &classEntries)
	assert.NoError(t, err)
	// Make sure every Managed Entity is represented in the map

	for classID, function := range classToManagedEntityMap {
		// Get attribute string definition
		classAttrEntry, ok := classEntries[strconv.Itoa(int(classID))]
		assert.True(t, ok)
		assert.NotNil(t, classAttrEntry)

		// Get an example class
		managedEntity, omciError := function()

		assert.NotNil(t, managedEntity)
		assert.Equal(t, omciError.StatusCode(), Success)
		assert.Equal(t, classID, managedEntity.GetClassID())

		meDef := managedEntity.GetManagedEntityDefinition()
		assert.NotNil(t, meDef)
		assert.Equal(t, meDef.Name, classAttrEntry.CamelCase)

		// Open the Golang class file and make sure the attribute name constants exist
		golangFile, goFileErr := os.Open(classAttrEntry.Filename)
		assert.NoError(t, goFileErr)
		assert.NotNil(t, golangFile)
		defer golangFile.Close()

		goFileBytes, txtErr := ioutil.ReadAll(golangFile)
		assert.NoError(t, txtErr)
		assert.NotNil(t, goFileBytes)

		goFileText := string(goFileBytes)
		assert.NotNil(t, goFileText)
		assert.NotEmpty(t, goFileText)

		if meDef.Name == classAttrEntry.CamelCase {
			attrDefs := meDef.GetAttributeDefinitions()
			assert.NotNil(t, attrDefs)

			// Walk attribute definitions and see if they match
			for attrIndex, attr := range attrDefs {
				assert.NotNil(t, attr)

				attrEntry, found := classAttrEntry.Attributes[strconv.Itoa(int(attrIndex))]
				assert.True(t, found)
				assert.NotNil(t, attrEntry)

				assert.Equal(t, attr.Name, attrEntry.CamelCase)
				if attr.Name == attrEntry.CamelCase {
					// ManagedEntityId constant common in all files and defined elsewhere
					var expectedLine string
					if attrEntry.Index != 0 {
						format := "const %v = \"%v\""
						expectedLine = fmt.Sprintf(format, attrEntry.Final, attrEntry.CamelCase)
					} else {
						// Match Entity ID by looking at use in structure initialization
						expectedLine = "Uint16Field(ManagedEntityID, PointerAttributeType"
					}
					found := strings.Contains(goFileText, expectedLine)
					assert.True(t, found)

					if found {
						// Scrub it from the attribute list
						delete(classAttrEntry.Attributes, strconv.Itoa(int(attrIndex)))
					}
				}
			}
		}
		// If all attributes have been scrubbed, delete the class entry
		assert.Zero(t, len(classAttrEntry.Attributes))
		if len(classAttrEntry.Attributes) == 0 {
			delete(classEntries, strconv.Itoa(int(classID)))
		}
	}
	// Unmarshalled JSON map should be empty if all attributes and classes
	// match the code-generated file information.
	assert.Zero(t, len(classEntries))
	if len(classEntries) != 0 {
		fmt.Printf("These entries remained after test:\n%+v\n", classEntries)
	}
}