// Copyright (c) The OpenTofu Authors
// SPDX-License-Identifier: MPL-2.0
// Copyright (c) 2023 HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0

package tofu

import (
	"errors"
	"fmt"
	"strings"
	"testing"

	"github.com/hashicorp/hcl/v2"
	"github.com/hashicorp/hcl/v2/hcltest"
	"github.com/opentofu/opentofu/internal/addrs"
	"github.com/opentofu/opentofu/internal/configs"
	"github.com/opentofu/opentofu/internal/configs/configschema"
	"github.com/opentofu/opentofu/internal/lang/marks"
	"github.com/opentofu/opentofu/internal/plugins"
	"github.com/opentofu/opentofu/internal/providers"
	"github.com/opentofu/opentofu/internal/provisioners"
	"github.com/opentofu/opentofu/internal/tfdiags"
	"github.com/zclconf/go-cty/cty"
)

func TestNodeValidatableResource_ValidateProvisioner_valid(t *testing.T) {
	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	mp := &MockProvisioner{}
	mp.GetSchemaResponse = provisioners.GetSchemaResponse{Provisioner: &configschema.Block{}}

	ctx.ProvisionersProvisioners = plugins.NewLibrary(nil, map[string]provisioners.Factory{
		"baz": func() (provisioners.Interface, error) { return mp, nil },
	}).NewProvisionerManager()

	pc := &configs.Provisioner{
		Type:   "baz",
		Config: hcl.EmptyBody(),
		Connection: &configs.Connection{
			Config: configs.SynthBody("", map[string]cty.Value{
				"host": cty.StringVal("localhost"),
				"type": cty.StringVal("ssh"),
				"port": cty.NumberIntVal(10022),
			}),
		},
	}

	rc := &configs.Resource{
		Mode:   addrs.ManagedResourceMode,
		Type:   "test_foo",
		Name:   "bar",
		Config: configs.SynthBody("", map[string]cty.Value{}),
	}

	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:   mustConfigResourceAddr("test_foo.bar"),
			Config: rc,
		},
	}

	diags := node.validateProvisioner(t.Context(), ctx, pc)
	if diags.HasErrors() {
		t.Fatalf("node.Eval failed: %s", diags.Err())
	}
	if !mp.ValidateProvisionerConfigCalled {
		t.Fatalf("p.ValidateProvisionerConfig not called")
	}
}

func TestNodeValidatableResource_ValidateProvisioner__warning(t *testing.T) {
	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	mp := &MockProvisioner{}
	mp.GetSchemaResponse = provisioners.GetSchemaResponse{Provisioner: &configschema.Block{}}
	ctx.ProvisionersProvisioners = plugins.NewLibrary(nil, map[string]provisioners.Factory{
		"baz": func() (provisioners.Interface, error) { return mp, nil },
	}).NewProvisionerManager()

	pc := &configs.Provisioner{
		Type:   "baz",
		Config: hcl.EmptyBody(),
	}

	rc := &configs.Resource{
		Mode:    addrs.ManagedResourceMode,
		Type:    "test_foo",
		Name:    "bar",
		Config:  configs.SynthBody("", map[string]cty.Value{}),
		Managed: &configs.ManagedResource{},
	}

	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:   mustConfigResourceAddr("test_foo.bar"),
			Config: rc,
		},
	}

	{
		var diags tfdiags.Diagnostics
		diags = diags.Append(tfdiags.SimpleWarning("foo is deprecated"))
		mp.ValidateProvisionerConfigResponse = provisioners.ValidateProvisionerConfigResponse{
			Diagnostics: diags,
		}
	}

	diags := node.validateProvisioner(t.Context(), ctx, pc)
	if len(diags) != 1 {
		t.Fatalf("wrong number of diagnostics in %s; want one warning", diags.ErrWithWarnings())
	}

	if got, want := diags[0].Description().Summary, mp.ValidateProvisionerConfigResponse.Diagnostics[0].Description().Summary; got != want {
		t.Fatalf("wrong warning %q; want %q", got, want)
	}
}

func TestNodeValidatableResource_ValidateProvisioner_winRM_deprecated(t *testing.T) {
	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	mp := &MockProvisioner{}
	mp.GetSchemaResponse = provisioners.GetSchemaResponse{Provisioner: &configschema.Block{}}
	ctx.ProvisionersProvisioners = plugins.NewLibrary(nil, map[string]provisioners.Factory{
		"baz": func() (provisioners.Interface, error) { return mp, nil },
	}).NewProvisionerManager()

	stringPtr := func(s string) *string { return &s }

	testCases := []struct {
		name                string
		config              *configs.Provisioner
		expectedDiagSummary *string
	}{
		{
			name: "winrm connection should show deprecation warning",
			config: &configs.Provisioner{
				Type:   "baz",
				Config: hcl.EmptyBody(),
				Connection: &configs.Connection{
					Config: configs.SynthBody("", map[string]cty.Value{
						"type": cty.StringVal("winrm"),
						"host": cty.StringVal("localhost"),
					}),
				},
			},
			expectedDiagSummary: stringPtr("WinRM connection type is deprecated"),
		},
		{
			name: "ssh connection should not show deprecation warning",
			config: &configs.Provisioner{
				Type:   "baz",
				Config: hcl.EmptyBody(),
				Connection: &configs.Connection{
					Config: configs.SynthBody("", map[string]cty.Value{
						"type": cty.StringVal("ssh"),
						"host": cty.StringVal("localhost"),
					}),
				},
			},
			expectedDiagSummary: nil,
		},
	}

	rc := &configs.Resource{
		Mode:    addrs.ManagedResourceMode,
		Type:    "test_foo",
		Name:    "bar",
		Config:  configs.SynthBody("", map[string]cty.Value{}),
		Managed: &configs.ManagedResource{},
	}

	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:   mustConfigResourceAddr("test_foo.bar"),
			Config: rc,
		},
	}

	for _, tt := range testCases {
		t.Run(tt.name, func(t *testing.T) {
			diags := node.validateProvisioner(t.Context(), ctx, tt.config)
			if tt.expectedDiagSummary == nil {
				if len(diags) != 0 {
					t.Fatalf("unexpected warnings: %s", diags.ErrWithWarnings())
				}
			} else {
				if len(diags) != 1 {
					t.Fatalf("wrong number of diagnostics in %s; want one warning, got %d", diags.ErrWithWarnings(), len(diags))
				}
				got := diags[0].Description().Summary
				want := *tt.expectedDiagSummary

				if got != want {
					t.Fatalf("wrong warning %q; want %q", got, want)
				}
			}
		})
	}
}

func TestNodeValidatableResource_ValidateProvisioner__connectionInvalid(t *testing.T) {
	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	mp := &MockProvisioner{}
	mp.GetSchemaResponse = provisioners.GetSchemaResponse{Provisioner: &configschema.Block{}}
	ctx.ProvisionersProvisioners = plugins.NewLibrary(nil, map[string]provisioners.Factory{
		"baz": func() (provisioners.Interface, error) { return mp, nil },
	}).NewProvisionerManager()

	pc := &configs.Provisioner{
		Type:   "baz",
		Config: hcl.EmptyBody(),
		Connection: &configs.Connection{
			Config: configs.SynthBody("", map[string]cty.Value{
				"type":             cty.StringVal("ssh"),
				"bananananananana": cty.StringVal("foo"),
				"bazaz":            cty.StringVal("bar"),
			}),
		},
	}

	rc := &configs.Resource{
		Mode:    addrs.ManagedResourceMode,
		Type:    "test_foo",
		Name:    "bar",
		Config:  configs.SynthBody("", map[string]cty.Value{}),
		Managed: &configs.ManagedResource{},
	}

	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:   mustConfigResourceAddr("test_foo.bar"),
			Config: rc,
		},
	}

	diags := node.validateProvisioner(t.Context(), ctx, pc)
	if !diags.HasErrors() {
		t.Fatalf("node.Eval succeeded; want error")
	}
	if len(diags) != 3 {
		t.Fatalf("wrong number of diagnostics; want two errors\n\n%s", diags.Err())
	}

	errStr := diags.Err().Error()
	if !strings.Contains(errStr, "bananananananana") || !strings.Contains(errStr, "bazaz") {
		t.Fatalf("wrong errors %q; want something about each of our invalid connInfo keys", errStr)
	}
}

func TestNodeValidatableResource_ValidateResource_managedResource(t *testing.T) {
	mp := simpleMockProvider()
	mp.ValidateResourceConfigFn = func(req providers.ValidateResourceConfigRequest) providers.ValidateResourceConfigResponse {
		if got, want := req.TypeName, "test_object"; got != want {
			t.Fatalf("wrong resource type\ngot:  %#v\nwant: %#v", got, want)
		}
		if got, want := req.Config.GetAttr("test_string"), cty.StringVal("bar"); !got.RawEquals(want) {
			t.Fatalf("wrong value for test_string\ngot:  %#v\nwant: %#v", got, want)
		}
		if got, want := req.Config.GetAttr("test_number"), cty.NumberIntVal(2); !got.RawEquals(want) {
			t.Fatalf("wrong value for test_number\ngot:  %#v\nwant: %#v", got, want)
		}
		return providers.ValidateResourceConfigResponse{}
	}

	p := providers.Interface(mp)
	rc := &configs.Resource{
		Mode: addrs.ManagedResourceMode,
		Type: "test_object",
		Name: "foo",
		Config: configs.SynthBody("", map[string]cty.Value{
			"test_string": cty.StringVal("bar"),
			"test_number": cty.NumberIntVal(2).Mark(marks.Sensitive),
		}),
	}
	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:             mustConfigResourceAddr("test_foo.bar"),
			Config:           rc,
			ResolvedProvider: mustResolvedProviderInRoot("test", p),
		},
	}

	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	ctx.installProvider(addrs.NewDefaultProvider("test"), p)

	err := node.validateResource(t.Context(), ctx)
	if err != nil {
		t.Fatalf("err: %s", err)
	}

	if !mp.ValidateResourceConfigCalled {
		t.Fatal("Expected ValidateResourceConfig to be called, but it was not!")
	}
}

func TestNodeValidatableResource_ValidateResource_managedResourceCount(t *testing.T) {
	// Setup
	mp := simpleMockProvider()
	mp.ValidateResourceConfigFn = func(req providers.ValidateResourceConfigRequest) providers.ValidateResourceConfigResponse {
		if got, want := req.TypeName, "test_object"; got != want {
			t.Fatalf("wrong resource type\ngot:  %#v\nwant: %#v", got, want)
		}
		if got, want := req.Config.GetAttr("test_string"), cty.StringVal("bar"); !got.RawEquals(want) {
			t.Fatalf("wrong value for test_string\ngot:  %#v\nwant: %#v", got, want)
		}
		return providers.ValidateResourceConfigResponse{}
	}

	p := providers.Interface(mp)

	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	ctx.installProvider(addrs.NewDefaultProvider("test"), p)

	tests := []struct {
		name  string
		count hcl.Expression
	}{
		{
			"simple count",
			hcltest.MockExprLiteral(cty.NumberIntVal(2)),
		},
		{
			"marked count value",
			hcltest.MockExprLiteral(cty.NumberIntVal(3).Mark("marked")),
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			rc := &configs.Resource{
				Mode:  addrs.ManagedResourceMode,
				Type:  "test_object",
				Name:  "foo",
				Count: test.count,
				Config: configs.SynthBody("", map[string]cty.Value{
					"test_string": cty.StringVal("bar"),
				}),
			}
			node := NodeValidatableResource{
				NodeAbstractResource: &NodeAbstractResource{
					Addr:             mustConfigResourceAddr("test_foo.bar"),
					Config:           rc,
					ResolvedProvider: mustResolvedProviderInRoot("test", p),
				},
			}

			diags := node.validateResource(t.Context(), ctx)
			if diags.HasErrors() {
				t.Fatalf("err: %s", diags.Err())
			}

			if !mp.ValidateResourceConfigCalled {
				t.Fatal("Expected ValidateResourceConfig to be called, but it was not!")
			}
		})
	}
}

func TestNodeValidatableResource_ValidateResource_ephemeralResource(t *testing.T) {
	mp := simpleMockProvider()

	p := providers.Interface(mp)
	rc := &configs.Resource{
		Mode: addrs.EphemeralResourceMode,
		Type: "test_object",
		Name: "foo",
		Config: configs.SynthBody("", map[string]cty.Value{
			"test_string": cty.StringVal("bar"),
			"test_number": cty.NumberIntVal(2).Mark(marks.Sensitive),
		}),
	}

	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:             mustConfigResourceAddr("ephemeral.test_foo.bar"),
			Config:           rc,
			ResolvedProvider: mustResolvedProviderInRoot("test", p),
		},
	}

	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	ctx.installProvider(addrs.NewDefaultProvider("test"), p)

	t.Run("no errors", func(t *testing.T) {
		mp.ValidateEphemeralConfigCalled = false
		mp.ValidateEphemeralConfigFn = func(req providers.ValidateEphemeralConfigRequest) providers.ValidateEphemeralConfigResponse {
			if got, want := req.TypeName, "test_object"; got != want {
				t.Fatalf("wrong resource type\ngot:  %#v\nwant: %#v", got, want)
			}
			if got, want := req.Config.GetAttr("test_string"), cty.StringVal("bar"); !got.RawEquals(want) {
				t.Fatalf("wrong value for test_string\ngot:  %#v\nwant: %#v", got, want)
			}
			if got, want := req.Config.GetAttr("test_number"), cty.NumberIntVal(2); !got.RawEquals(want) {
				t.Fatalf("wrong value for test_number\ngot:  %#v\nwant: %#v", got, want)
			}
			return providers.ValidateEphemeralConfigResponse{}
		}
		diags := node.validateResource(t.Context(), ctx)
		if diags.HasErrors() {
			t.Fatalf("err: %s", diags.Err())
		}

		if !mp.ValidateEphemeralConfigCalled {
			t.Fatal("Expected ValidateEphemeralResourceConfig to be called, but it was not!")
		}
	})
	t.Run("validation diagnostics returned", func(t *testing.T) {
		mp.ValidateEphemeralConfigCalled = false
		mp.ValidateEphemeralConfigFn = func(req providers.ValidateEphemeralConfigRequest) providers.ValidateEphemeralConfigResponse {
			return providers.ValidateEphemeralConfigResponse{
				Diagnostics: tfdiags.Diagnostics{}.Append(&hcl.Diagnostic{
					Severity: hcl.DiagError,
					Summary:  "validation summary",
					Detail:   "validation detail",
				}),
			}
		}

		diags := node.validateResource(t.Context(), ctx)
		if !mp.ValidateEphemeralConfigCalled {
			t.Fatal("Expected ValidateEphemeralResourceConfig to be called, but it was not!")
		}
		if !diags.HasErrors() {
			t.Fatalf("expected err. Got nothing")
		}
		if got, want := diags[0].Description().Summary, "validation summary"; got != want {
			t.Fatalf("expected diagnostic summary %q but got %q", want, got)
		}
		if got, want := diags[0].Description().Detail, "validation detail"; got != want {
			t.Fatalf("expected diagnostic detail %q but got %q", want, got)
		}
	})
}

func TestNodeValidatableResource_ValidateResource_dataSource(t *testing.T) {
	mp := simpleMockProvider()
	mp.ValidateDataResourceConfigFn = func(req providers.ValidateDataResourceConfigRequest) providers.ValidateDataResourceConfigResponse {
		if got, want := req.TypeName, "test_object"; got != want {
			t.Fatalf("wrong resource type\ngot:  %#v\nwant: %#v", got, want)
		}
		if got, want := req.Config.GetAttr("test_string"), cty.StringVal("bar"); !got.RawEquals(want) {
			t.Fatalf("wrong value for test_string\ngot:  %#v\nwant: %#v", got, want)
		}
		if got, want := req.Config.GetAttr("test_number"), cty.NumberIntVal(2); !got.RawEquals(want) {
			t.Fatalf("wrong value for test_number\ngot:  %#v\nwant: %#v", got, want)
		}
		return providers.ValidateDataResourceConfigResponse{}
	}

	p := providers.Interface(mp)
	rc := &configs.Resource{
		Mode: addrs.DataResourceMode,
		Type: "test_object",
		Name: "foo",
		Config: configs.SynthBody("", map[string]cty.Value{
			"test_string": cty.StringVal("bar"),
			"test_number": cty.NumberIntVal(2).Mark(marks.Sensitive),
		}),
	}

	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:             mustConfigResourceAddr("test_foo.bar"),
			Config:           rc,
			ResolvedProvider: mustResolvedProviderInRoot("test", p),
		},
	}

	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	ctx.installProvider(addrs.NewDefaultProvider("test"), p)

	diags := node.validateResource(t.Context(), ctx)
	if diags.HasErrors() {
		t.Fatalf("err: %s", diags.Err())
	}

	if !mp.ValidateDataResourceConfigCalled {
		t.Fatal("Expected ValidateDataSourceConfig to be called, but it was not!")
	}
}

func TestNodeValidatableResource_ValidateResource_valid(t *testing.T) {
	mp := simpleMockProvider()
	mp.ValidateResourceConfigFn = func(req providers.ValidateResourceConfigRequest) providers.ValidateResourceConfigResponse {
		return providers.ValidateResourceConfigResponse{}
	}

	p := providers.Interface(mp)
	rc := &configs.Resource{
		Mode:   addrs.ManagedResourceMode,
		Type:   "test_object",
		Name:   "foo",
		Config: configs.SynthBody("", map[string]cty.Value{}),
	}
	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:             mustConfigResourceAddr("test_object.foo"),
			Config:           rc,
			ResolvedProvider: mustResolvedProviderInRoot("test", p),
		},
	}

	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	ctx.installProvider(addrs.NewDefaultProvider("test"), p)

	diags := node.validateResource(t.Context(), ctx)
	if diags.HasErrors() {
		t.Fatalf("err: %s", diags.Err())
	}
}

func TestNodeValidatableResource_ValidateResource_warningsAndErrorsPassedThrough(t *testing.T) {
	mp := simpleMockProvider()
	mp.ValidateResourceConfigFn = func(req providers.ValidateResourceConfigRequest) providers.ValidateResourceConfigResponse {
		var diags tfdiags.Diagnostics
		diags = diags.Append(tfdiags.SimpleWarning("warn"))
		diags = diags.Append(errors.New("err"))
		return providers.ValidateResourceConfigResponse{
			Diagnostics: diags,
		}
	}

	p := providers.Interface(mp)
	rc := &configs.Resource{
		Mode:   addrs.ManagedResourceMode,
		Type:   "test_object",
		Name:   "foo",
		Config: configs.SynthBody("", map[string]cty.Value{}),
	}
	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:             mustConfigResourceAddr("test_foo.bar"),
			Config:           rc,
			ResolvedProvider: mustResolvedProviderInRoot("test", p),
		},
	}

	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	ctx.installProvider(addrs.NewDefaultProvider("test"), p)

	diags := node.validateResource(t.Context(), ctx)
	if !diags.HasErrors() {
		t.Fatal("unexpected success; want error")
	}

	bySeverity := map[tfdiags.Severity]tfdiags.Diagnostics{}
	for _, diag := range diags {
		bySeverity[diag.Severity()] = append(bySeverity[diag.Severity()], diag)
	}
	if len(bySeverity[tfdiags.Warning]) != 1 || bySeverity[tfdiags.Warning][0].Description().Summary != "warn" {
		t.Errorf("Expected 1 warning 'warn', got: %s", bySeverity[tfdiags.Warning].ErrWithWarnings())
	}
	if len(bySeverity[tfdiags.Error]) != 1 || bySeverity[tfdiags.Error][0].Description().Summary != "err" {
		t.Errorf("Expected 1 error 'err', got: %s", bySeverity[tfdiags.Error].Err())
	}
}

func TestNodeValidatableResource_ValidateResource_invalidDependsOn(t *testing.T) {
	mp := simpleMockProvider()
	mp.ValidateResourceConfigFn = func(req providers.ValidateResourceConfigRequest) providers.ValidateResourceConfigResponse {
		return providers.ValidateResourceConfigResponse{}
	}

	// We'll check a _valid_ config first, to make sure we're not failing
	// for some other reason, and then make it invalid.
	p := providers.Interface(mp)
	rc := &configs.Resource{
		Mode:   addrs.ManagedResourceMode,
		Type:   "test_object",
		Name:   "foo",
		Config: configs.SynthBody("", map[string]cty.Value{}),
		DependsOn: []hcl.Traversal{
			// Depending on path.module is pointless, since it is immediately
			// available, but we allow all of the referenceable addrs here
			// for consistency: referencing them is harmless, and avoids the
			// need for us to document a different subset of addresses that
			// are valid in depends_on.
			// For the sake of this test, it's a valid address we can use that
			// doesn't require something else to exist in the configuration.
			{
				hcl.TraverseRoot{
					Name: "path",
				},
				hcl.TraverseAttr{
					Name: "module",
				},
			},
		},
	}
	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:             mustConfigResourceAddr("test_foo.bar"),
			Config:           rc,
			ResolvedProvider: mustResolvedProviderInRoot("test", p),
		},
	}

	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	ctx.installProvider(addrs.NewDefaultProvider("test"), p)

	diags := node.validateResource(t.Context(), ctx)
	if diags.HasErrors() {
		t.Fatalf("error for supposedly-valid config: %s", diags.ErrWithWarnings())
	}

	// Now we'll make it invalid by adding additional traversal steps at
	// the end of what we're referencing. This is intended to catch the
	// situation where the user tries to depend on e.g. a specific resource
	// attribute, rather than the whole resource, like aws_instance.foo.id.
	rc.DependsOn = append(rc.DependsOn, hcl.Traversal{
		hcl.TraverseRoot{
			Name: "path",
		},
		hcl.TraverseAttr{
			Name: "module",
		},
		hcl.TraverseAttr{
			Name: "extra",
		},
	})

	diags = node.validateResource(t.Context(), ctx)
	if !diags.HasErrors() {
		t.Fatal("no error for invalid depends_on")
	}
	if got, want := diags.Err().Error(), "Invalid depends_on reference"; !strings.Contains(got, want) {
		t.Fatalf("wrong error\ngot:  %s\nwant: Message containing %q", got, want)
	}

	// Test for handling an unknown root without attribute, like a
	// typo that omits the dot inbetween "path.module".
	rc.DependsOn = append(rc.DependsOn, hcl.Traversal{
		hcl.TraverseRoot{
			Name: "pathmodule",
		},
	})

	diags = node.validateResource(t.Context(), ctx)
	if !diags.HasErrors() {
		t.Fatal("no error for invalid depends_on")
	}
	if got, want := diags.Err().Error(), "Invalid depends_on reference"; !strings.Contains(got, want) {
		t.Fatalf("wrong error\ngot:  %s\nwant: Message containing %q", got, want)
	}
}

func TestNodeValidatableResource_ValidateResource_invalidIgnoreChangesNonexistent(t *testing.T) {
	mp := simpleMockProvider()
	mp.ValidateResourceConfigFn = func(req providers.ValidateResourceConfigRequest) providers.ValidateResourceConfigResponse {
		return providers.ValidateResourceConfigResponse{}
	}

	// We'll check a _valid_ config first, to make sure we're not failing
	// for some other reason, and then make it invalid.
	p := providers.Interface(mp)
	rc := &configs.Resource{
		Mode:   addrs.ManagedResourceMode,
		Type:   "test_object",
		Name:   "foo",
		Config: configs.SynthBody("", map[string]cty.Value{}),
		Managed: &configs.ManagedResource{
			IgnoreChanges: []hcl.Traversal{
				{
					hcl.TraverseAttr{
						Name: "test_string",
					},
				},
			},
		},
	}
	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:             mustConfigResourceAddr("test_foo.bar"),
			Config:           rc,
			ResolvedProvider: mustResolvedProviderInRoot("test", p),
		},
	}

	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	ctx.installProvider(addrs.NewDefaultProvider("test"), p)

	diags := node.validateResource(t.Context(), ctx)
	if diags.HasErrors() {
		t.Fatalf("error for supposedly-valid config: %s", diags.ErrWithWarnings())
	}

	// Now we'll make it invalid by attempting to ignore a nonexistent
	// attribute.
	rc.Managed.IgnoreChanges = append(rc.Managed.IgnoreChanges, hcl.Traversal{
		hcl.TraverseAttr{
			Name: "nonexistent",
		},
	})

	diags = node.validateResource(t.Context(), ctx)
	if !diags.HasErrors() {
		t.Fatal("no error for invalid ignore_changes")
	}
	if got, want := diags.Err().Error(), "Unsupported attribute: This object has no argument, nested block, or exported attribute named \"nonexistent\""; !strings.Contains(got, want) {
		t.Fatalf("wrong error\ngot:  %s\nwant: Message containing %q", got, want)
	}
}

func TestNodeValidatableResource_ValidateResource_invalidIgnoreChangesComputed(t *testing.T) {
	// construct a schema with a computed attribute
	ms := &configschema.Block{
		Attributes: map[string]*configschema.Attribute{
			"test_string": {
				Type:     cty.String,
				Optional: true,
			},
			"computed_string": {
				Type:     cty.String,
				Computed: true,
				Optional: false,
			},
		},
	}

	mp := &MockProvider{
		GetProviderSchemaResponse: &providers.GetProviderSchemaResponse{
			Provider: providers.Schema{Block: ms},
			ResourceTypes: map[string]providers.Schema{
				"test_object": {Block: ms},
			},
		},
	}

	mp.ValidateResourceConfigFn = func(req providers.ValidateResourceConfigRequest) providers.ValidateResourceConfigResponse {
		return providers.ValidateResourceConfigResponse{}
	}

	// We'll check a _valid_ config first, to make sure we're not failing
	// for some other reason, and then make it invalid.
	p := providers.Interface(mp)
	rc := &configs.Resource{
		Mode:   addrs.ManagedResourceMode,
		Type:   "test_object",
		Name:   "foo",
		Config: configs.SynthBody("", map[string]cty.Value{}),
		Managed: &configs.ManagedResource{
			IgnoreChanges: []hcl.Traversal{
				{
					hcl.TraverseAttr{
						Name: "test_string",
					},
				},
			},
		},
	}
	node := NodeValidatableResource{
		NodeAbstractResource: &NodeAbstractResource{
			Addr:             mustConfigResourceAddr("test_foo.bar"),
			Config:           rc,
			ResolvedProvider: mustResolvedProviderInRoot("test", p),
		},
	}

	ctx := &MockEvalContext{}
	ctx.installSimpleEval()
	ctx.installProvider(addrs.NewDefaultProvider("test"), p)

	diags := node.validateResource(t.Context(), ctx)
	if diags.HasErrors() {
		t.Fatalf("error for supposedly-valid config: %s", diags.ErrWithWarnings())
	}

	// Now we'll make it invalid by attempting to ignore a computed
	// attribute.
	rc.Managed.IgnoreChanges = append(rc.Managed.IgnoreChanges, hcl.Traversal{
		hcl.TraverseAttr{
			Name: "computed_string",
		},
	})

	diags = node.validateResource(t.Context(), ctx)
	if diags.HasErrors() {
		t.Fatalf("got unexpected error: %s", diags.ErrWithWarnings())
	}
	if got, want := diags.ErrWithWarnings().Error(), `Redundant ignore_changes element: Adding an attribute name to ignore_changes tells OpenTofu to ignore future changes to the argument in configuration after the object has been created, retaining the value originally configured.

The attribute computed_string is decided by the provider alone and therefore there can be no configured value to compare with. Including this attribute in ignore_changes has no effect. Remove the attribute from ignore_changes to quiet this warning.`; !strings.Contains(got, want) {
		t.Fatalf("wrong error\ngot:  %s\nwant: Message containing %q", got, want)
	}
}

// TestNodeValidatableResource_ValidateResource_suggestion validates that the suggestions generated for mismatched block types
// are generated correctly. This was added when ephemeral resource were added and the suggestion code refactored to accommodate
// all resource modes in one.
func TestNodeValidatableResource_ValidateResource_suggestion(t *testing.T) {
	ms := &configschema.Block{
		Attributes: map[string]*configschema.Attribute{
			"test_string": {
				Type:     cty.String,
				Optional: true,
			},
			"computed_string": {
				Type:     cty.String,
				Computed: true,
				Optional: false,
			},
		},
	}

	mp := &MockProvider{
		GetProviderSchemaResponse: &providers.GetProviderSchemaResponse{
			Provider: providers.Schema{Block: ms},
			ResourceTypes: map[string]providers.Schema{
				"test_managed_resource": {Block: ms},
			},
			DataSources: map[string]providers.Schema{
				"test_data_source": {Block: ms},
			},
			EphemeralResources: map[string]providers.Schema{
				"test_ephemeral_resource": {Block: ms},
			},
		},
	}

	tests := map[string]struct {
		mode  addrs.ResourceMode
		rtype string

		wantSummary string
		wantDetail  string
	}{
		"managed resource with resource type of a data source": {
			mode:        addrs.ManagedResourceMode,
			rtype:       "test_data_source",
			wantSummary: "Invalid resource type",
			wantDetail:  "The provider hashicorp/test does not support resource type \"test_data_source\".\n\nDid you intend to use a block of type \"data\" \"test_data_source\"? If so, declare this using a block of type \"data\" instead of one of type \"resource\".",
		},
		"managed resource with resource type of an ephemeral resource": {
			mode:        addrs.ManagedResourceMode,
			rtype:       "test_ephemeral_resource",
			wantSummary: "Invalid resource type",
			wantDetail:  "The provider hashicorp/test does not support resource type \"test_ephemeral_resource\".\n\nDid you intend to use a block of type \"ephemeral\" \"test_ephemeral_resource\"? If so, declare this using a block of type \"ephemeral\" instead of one of type \"resource\".",
		},
		"data source with resource type of a managed resource": {
			mode:        addrs.DataResourceMode,
			rtype:       "test_managed_resource",
			wantSummary: "Invalid data source",
			wantDetail:  "The provider hashicorp/test does not support data source \"test_managed_resource\".\n\nDid you intend to use a block of type \"resource\" \"test_managed_resource\"? If so, declare this using a block of type \"resource\" instead of one of type \"data\".",
		},
		"data source with resource type of an ephemeral resource": {
			mode:        addrs.DataResourceMode,
			rtype:       "test_ephemeral_resource",
			wantSummary: "Invalid data source",
			wantDetail:  "The provider hashicorp/test does not support data source \"test_ephemeral_resource\".\n\nDid you intend to use a block of type \"ephemeral\" \"test_ephemeral_resource\"? If so, declare this using a block of type \"ephemeral\" instead of one of type \"data\".",
		},
		"ephemeral resource with resource type of a managed resource": {
			mode:        addrs.EphemeralResourceMode,
			rtype:       "test_managed_resource",
			wantSummary: "Invalid ephemeral resource",
			wantDetail:  "The provider hashicorp/test does not support ephemeral resource \"test_managed_resource\".\n\nDid you intend to use a block of type \"resource\" \"test_managed_resource\"? If so, declare this using a block of type \"resource\" instead of one of type \"ephemeral\".",
		},
		"ephemeral resource with resource type of a data source": {
			mode:        addrs.EphemeralResourceMode,
			rtype:       "test_data_source",
			wantSummary: "Invalid ephemeral resource",
			wantDetail:  "The provider hashicorp/test does not support ephemeral resource \"test_data_source\".\n\nDid you intend to use a block of type \"data\" \"test_data_source\"? If so, declare this using a block of type \"data\" instead of one of type \"ephemeral\".",
		},
	}
	for name, tt := range tests {
		t.Run(name, func(t *testing.T) {
			p := providers.Interface(mp)
			rc := &configs.Resource{
				Mode:   tt.mode,
				Type:   tt.rtype,
				Name:   "foo",
				Config: configs.SynthBody("", map[string]cty.Value{}),
			}
			var prefix string
			if tt.mode != addrs.ManagedResourceMode {
				prefix = addrs.ResourceModeBlockName(tt.mode)
			}
			node := NodeValidatableResource{
				NodeAbstractResource: &NodeAbstractResource{
					Addr:             mustConfigResourceAddr(fmt.Sprintf("%s%s.bar", prefix, tt.rtype)),
					Config:           rc,
					ResolvedProvider: mustResolvedProviderInRoot("test", p),
				},
			}

			ctx := &MockEvalContext{}
			ctx.installSimpleEval()
			ctx.installProvider(addrs.NewDefaultProvider("test"), p)

			diags := node.validateResource(t.Context(), ctx)
			if got, want := len(diags), 1; got != want {
				t.Fatalf("expected to have %d diagnostics but got %d", want, got)
			}
			d := diags[0]

			if got, want := d.Description().Summary, tt.wantSummary; got != want {
				t.Fatalf("unexpected diagnostic summary. \nwant:\n\t%s\ngot:\n\t%s", want, got)
			}
			if got, want := d.Description().Detail, tt.wantDetail; got != want {
				t.Fatalf("unexpected diagnostic detail. \nwant:\n\t%s\ngot:\n\t%s", want, got)
			}
		})
	}
}
