// Copyright 2022 Princess B33f Heavy Industries / Dave Shanley
// SPDX-License-Identifier: MIT

package model

import (
	"context"
	"testing"

	"github.com/stretchr/testify/assert"
	"go.yaml.in/yaml/v4"

	"github.com/pb33f/libopenapi/datamodel/low"
	"github.com/pb33f/libopenapi/datamodel/low/base"
	v3 "github.com/pb33f/libopenapi/datamodel/low/v3"
)

func TestCompareExamples_SummaryModified(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `summary: magic herbs`
	right := `summary: cure all`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	extChanges := CompareExamples(&lDoc, &rDoc)

	assert.Equal(t, extChanges.TotalChanges(), 1)
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, Modified, extChanges.Changes[0].ChangeType)
	assert.Equal(t, v3.SummaryLabel, extChanges.Changes[0].Property)
	assert.Equal(t, "magic herbs", extChanges.Changes[0].Original)
	assert.Equal(t, "cure all", extChanges.Changes[0].New)
}

func TestCompareExamples_Map(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `value:
  cheesy: bread
  pasta: sauce`

	right := `value:
  cheesy: cakes
  pasta: spicy`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	extChanges := CompareExamples(&lDoc, &rDoc)

	assert.Equal(t, extChanges.TotalChanges(), 2)
	assert.Len(t, extChanges.GetAllChanges(), 2)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, Modified, extChanges.Changes[0].ChangeType)
}

func TestCompareExamples_MapAdded(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `value:
  cheesy: bread`

	right := `value:
  cheesy: bread
  pasta: sauce`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	extChanges := CompareExamples(&lDoc, &rDoc)

	assert.Equal(t, extChanges.TotalChanges(), 1)
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, PropertyAdded, extChanges.Changes[0].ChangeType)
}

func TestCompareExamples_MapRemoved(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `value:
  cheesy: bread`

	right := `value:
  cheesy: bread
  pasta: sauce`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	extChanges := CompareExamples(&rDoc, &lDoc)

	assert.Equal(t, extChanges.TotalChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges())
	assert.Equal(t, PropertyRemoved, extChanges.Changes[0].ChangeType)
}

func TestCompareExamples_SummaryAdded(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `summary: magic herbs`
	right := `summary: magic herbs
description: cure all`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	extChanges := CompareExamples(&lDoc, &rDoc)

	assert.Equal(t, extChanges.TotalChanges(), 1)
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, PropertyAdded, extChanges.Changes[0].ChangeType)
	assert.Equal(t, v3.DescriptionLabel, extChanges.Changes[0].Property)
	assert.Equal(t, "cure all", extChanges.Changes[0].New)
}

func TestCompareExamples_ExtensionAdded(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `summary: magic herbs`
	right := `summary: magic herbs
x-herbs: cure all`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	extChanges := CompareExamples(&lDoc, &rDoc)

	assert.Equal(t, extChanges.TotalChanges(), 1)
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, ObjectAdded, extChanges.ExtensionChanges.Changes[0].ChangeType)
	assert.Equal(t, "x-herbs", extChanges.ExtensionChanges.Changes[0].Property)
	assert.Equal(t, "cure all", extChanges.ExtensionChanges.Changes[0].New)
}

func TestCompareExamples_Identical(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `summary: magic herbs`
	right := `summary: magic herbs`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	extChanges := CompareExamples(&lDoc, &rDoc)
	assert.Nil(t, extChanges)
}

func TestCompareExamples_Date(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `value:
  date: 2022-12-29`

	right := `value:
  date: "2022-12-29"`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	changes := CompareExamples(&lDoc, &rDoc)

	assert.Equal(t, 1, changes.TotalChanges())
}

func TestCompareExamples_DataValueAdded(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `summary: test example
description: basic example`

	right := `summary: test example
description: basic example
dataValue:
  name: John Doe
  age: 30`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	extChanges := CompareExamples(&lDoc, &rDoc)
	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges()) // adding dataValue is not breaking

	allChanges := extChanges.GetAllChanges()
	assert.Equal(t, PropertyAdded, allChanges[0].ChangeType)
	assert.Equal(t, base.DataValueLabel, allChanges[0].Property)
}

func TestCompareExamples_SerializedValueAdded(t *testing.T) {
	// Clear hash cache to ensure deterministic results in concurrent test environments
	low.ClearHashCache()
	left := `summary: test example
description: basic example`

	right := `summary: test example
description: basic example
serializedValue: '{"name":"John Doe","age":30}'`

	var lNode, rNode yaml.Node
	_ = yaml.Unmarshal([]byte(left), &lNode)
	_ = yaml.Unmarshal([]byte(right), &rNode)

	// create low level objects
	var lDoc base.Example
	var rDoc base.Example
	_ = low.BuildModel(lNode.Content[0], &lDoc)
	_ = low.BuildModel(rNode.Content[0], &rDoc)
	_ = lDoc.Build(context.Background(), nil, lNode.Content[0], nil)
	_ = rDoc.Build(context.Background(), nil, rNode.Content[0], nil)

	extChanges := CompareExamples(&lDoc, &rDoc)
	assert.Equal(t, 1, extChanges.TotalChanges())
	assert.Len(t, extChanges.GetAllChanges(), 1)
	assert.Equal(t, 0, extChanges.TotalBreakingChanges()) // adding serializedValue is not breaking

	allChanges := extChanges.GetAllChanges()
	assert.Equal(t, PropertyAdded, allChanges[0].ChangeType)
	assert.Equal(t, base.SerializedValueLabel, allChanges[0].Property)
}