// Copyright 2016-2020, Pulumi Corporation.
//
// 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.

//nolint
package auto

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"io/ioutil"
	"os"
	"os/exec"
	"path/filepath"

	"github.com/pulumi/pulumi/sdk/v3/go/auto/optdestroy"
	"github.com/pulumi/pulumi/sdk/v3/go/auto/optpreview"
	"github.com/pulumi/pulumi/sdk/v3/go/auto/optrefresh"
	"github.com/pulumi/pulumi/sdk/v3/go/auto/optup"
	"github.com/pulumi/pulumi/sdk/v3/go/common/apitype"
	"github.com/pulumi/pulumi/sdk/v3/go/common/tokens"
	"github.com/pulumi/pulumi/sdk/v3/go/common/workspace"
	"github.com/pulumi/pulumi/sdk/v3/go/pulumi"
)

func Example() {
	ctx := context.Background()

	// This stack creates an output
	projA := "projA"
	stackName := FullyQualifiedStackName("myOrg", projA, "devStack")
	stackA, err := NewStackInlineSource(ctx, stackName, projA, func(pCtx *pulumi.Context) error {
		pCtx.Export("outputA", pulumi.String("valueA"))
		return nil
	})
	if err != nil {
		// return errors.Wrap(err, "failed to create stackA")
	}
	// deploy the stack
	aRes, err := stackA.Up(ctx)
	if err != nil {
		// return errors.Wrap(err, "failed to update bucket stackA")
	}

	// this stack creates an uses stackA's output to create a new output
	projB := "projB"
	stackName = FullyQualifiedStackName("myOrg", projB, "devStack")
	stackB, err := NewStackInlineSource(ctx, stackName, projB, func(pCtx *pulumi.Context) error {
		// output a new value "valueA/valueB"
		pCtx.Export(
			"outputB",
			pulumi.Sprintf(
				"%s/%s",
				pulumi.String(aRes.Outputs["outputA"].Value.(string)), pulumi.String("valueB"),
			),
		)
		return nil
	})
	if err != nil {
		// return errors.Wrap(err, "failed to create object stackB")
	}
	// deploy the stack
	bRes, err := stackB.Up(ctx)
	if err != nil {
		// return errors.Wrap(err, "failed to update stackB")
	}

	// Success!
	fmt.Println(bRes.Summary.Result)
}

func ExampleFullyQualifiedStackName() {
	stackName := FullyQualifiedStackName("myOrgName", "myProjectName", "myStackName")
	// "myOrgName/myProjectName/myStackName"
	ctx := context.Background()
	_, _ = NewStackLocalSource(ctx, stackName, filepath.Join(".", "project"))
}

func ExampleIsCompilationError() {
	ctx := context.Background()
	s, _ := NewStackLocalSource(ctx, "o/p/s", filepath.Join(".", "broken", "go", "program"))
	_, err := s.Up(ctx)
	if err != nil && IsCompilationError(err) {
		// time to fix up the program
	}
}

func ExampleIsConcurrentUpdateError() {
	ctx := context.Background()
	s, _ := NewStackLocalSource(ctx, "o/p/s", filepath.Join(".", "update", "inprogress", "program"))
	_, err := s.Up(ctx)
	if err != nil && IsConcurrentUpdateError(err) {
		// stack "o/p/s" already has an update in progress
		// implement some retry logic here...
	}
}

func ExampleIsSelectStack404Error() {
	ctx := context.Background()
	s, _ := NewStackLocalSource(ctx, "o/p/s", filepath.Join(".", "stack", "notfound", "program"))
	_, err := s.Up(ctx)
	if err != nil && IsSelectStack404Error(err) {
		// stack "o/p/s" does not exist
		// implement some retry logic here...
	}
}

func ExampleIsCreateStack409Error() {
	ctx := context.Background()
	s, _ := NewStackLocalSource(ctx, "o/p/s", filepath.Join(".", "stack", "alreadyexists", "program"))
	_, err := s.Up(ctx)
	if err != nil && IsCreateStack409Error(err) {
		// stack "o/p/s" already exists
		// implement some retry logic here...
	}
}

func ExampleIsRuntimeError() {
	ctx := context.Background()
	s, _ := NewStackLocalSource(ctx, "o/p/s", filepath.Join(".", "runtime", "error", "program"))
	_, err := s.Up(ctx)
	if err != nil && IsRuntimeError(err) {
		// oops, maybe there's an NPE in the program?
	}
}

func ExampleIsUnexpectedEngineError() {
	ctx := context.Background()
	s, _ := NewStackLocalSource(ctx, "o/p/s", filepath.Join(".", "engine", "error", "program"))
	_, err := s.Up(ctx)
	if err != nil && IsUnexpectedEngineError(err) {
		// oops, you've probably uncovered a bug in the pulumi engine.
		// please file a bug report :)
	}
}

func ExampleConfigMap() {
	cfg := ConfigMap{
		"plaintext": {Value: "unencrypted"},
		"secret":    {Value: "encrypted", Secret: true},
	}
	ctx := context.Background()
	s, _ := NewStackLocalSource(ctx, "o/p/s", filepath.Join(".", "project"))
	s.SetAllConfig(ctx, cfg)
}

func ExampleConfigValue() {
	cfgVal := ConfigValue{
		Value:  "an secret that will be marked as and stored encrypted",
		Secret: true,
	}
	ctx := context.Background()
	s, _ := NewStackLocalSource(ctx, "o/p/s", filepath.Join(".", "project"))
	s.SetConfig(ctx, "cfgKey", cfgVal)
}

func ExampleDestroyResult() {
	ctx := context.Background()
	// select an existing stack
	s, _ := SelectStackLocalSource(ctx, "o/p/s", filepath.Join(".", "project"))
	destroyRes, _ := s.Destroy(ctx)
	// success!
	fmt.Println(destroyRes.Summary.Result)
}

func ExampleGitRepo() {
	ctx := context.Background()
	pName := "go_remote_proj"
	stackName := FullyQualifiedStackName("myOrg", pName, "myStack")

	// we'll compile a the program into an executable with the name "examplesBinary"
	binName := "examplesBinary"
	repo := GitRepo{
		URL:         "https://github.com/pulumi/test-repo.git",
		ProjectPath: "goproj",
		// this call back will get executed post-clone to allow for additional program setup
		Setup: func(ctx context.Context, workspace Workspace) error {
			cmd := exec.Command("go", "build", "-o", binName, "main.go")
			cmd.Dir = workspace.WorkDir()
			return cmd.Run()
		},
	}
	// an override to the project file in the git repo, specifying our pre-built executable
	project := workspace.Project{
		Name: tokens.PackageName(pName),
		Runtime: workspace.NewProjectRuntimeInfo("go", map[string]interface{}{
			"binary": binName,
		}),
	}

	// initialize a stack from the git repo, specifying our project override
	NewStackRemoteSource(ctx, stackName, repo, Project(project))
}

func ExampleGitRepo_personalAccessToken() {
	ctx := context.Background()
	pName := "go_remote_proj"
	stackName := FullyQualifiedStackName("myOrg", pName, "myStack")

	// Get the Sourcecode Repository PERSONAL_ACCESS_TOKEN
	token, _ := os.LookupEnv("PERSONAL_ACCESS_TOKEN")

	repo := GitRepo{
		URL:         "https://github.com/pulumi/test-repo.git",
		ProjectPath: "goproj",
		Auth: &GitAuth{
			PersonalAccessToken: token,
		},
	}

	// initialize a stack from the git repo, specifying our project override
	NewStackRemoteSource(ctx, stackName, repo)
}

func ExampleGitRepo_privateKeyPath() {
	ctx := context.Background()
	pName := "go_remote_proj"
	stackName := FullyQualifiedStackName("myOrg", pName, "myStack")

	repo := GitRepo{
		URL:         "git@github.com:pulumi/test-repo.git",
		ProjectPath: "goproj",
		Auth: &GitAuth{
			SSHPrivateKeyPath: "/Users/myuser/.ssh/id_rsa",
			Password:          "PrivateKeyPassword",
		},
	}

	// initialize a stack from the git repo, specifying our project override
	NewStackRemoteSource(ctx, stackName, repo)
}

func ExampleGitRepo_privateKey() {
	ctx := context.Background()
	pName := "go_remote_proj"
	stackName := FullyQualifiedStackName("myOrg", pName, "myStack")

	repo := GitRepo{
		URL:         "git@github.com:pulumi/test-repo.git",
		ProjectPath: "goproj",
		Auth: &GitAuth{
			SSHPrivateKey: "<PRIVATE KEY FILE CONTENTS HERE>",
			Password:      "PrivateKeyPassword",
		},
	}

	// initialize a stack from the git repo, specifying our project override
	NewStackRemoteSource(ctx, stackName, repo)
}

func ExampleGitRepo_usernameAndPassword() {
	ctx := context.Background()
	pName := "go_remote_proj"
	stackName := FullyQualifiedStackName("myOrg", pName, "myStack")

	repo := GitRepo{
		URL:         "https://github.com/pulumi/test-repo.git",
		ProjectPath: "goproj",
		Auth: &GitAuth{
			// This will use a username and password combination for the private repo
			Username: "myuser",
			Password: "myPassword1234!",
		},
	}

	// initialize a stack from the git repo, specifying our project override
	NewStackRemoteSource(ctx, stackName, repo)
}

func ExampleLocalWorkspace() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// install the pulumi-aws plugin
	w.InstallPlugin(ctx, "aws", "v3.2.0")
	// fetch the config used with the last update on stack "org/proj/stack"
	w.RefreshConfig(ctx, "org/proj/stack")
}

func ExampleLocalWorkspace_CreateStack() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// initialize the stack
	err := w.CreateStack(ctx, "org/proj/stack")
	if err != nil {
		// failed to create the stack
	}
}

func ExampleLocalWorkspace_GetAllConfig() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// get all config from the workspace for the stack (read from Pulumi.stack.yaml)
	cfg, _ := w.GetAllConfig(ctx, "org/proj/stack")
	fmt.Println(cfg["config_key"].Value)
	fmt.Println(cfg["config_key"].Secret)
}

func ExampleLocalWorkspace_GetConfig() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// get all config from the workspace for the stack (read from Pulumi.stack.yaml)
	cfgVal, _ := w.GetConfig(ctx, "org/proj/stack", "config_key")
	fmt.Println(cfgVal.Value)
	fmt.Println(cfgVal.Secret)
}

func ExampleLocalWorkspace_GetEnvVars() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// get all environment values from the workspace for the stack
	e := w.GetEnvVars()
	for k, v := range e {
		fmt.Println(k)
		fmt.Println(v)
	}
}

func ExampleLocalWorkspace_SetEnvVars() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// set the environment values on the workspace for the stack
	e := map[string]string{
		"FOO": "bar",
	}
	w.SetEnvVars(e)
}

func ExampleLocalWorkspace_SetEnvVar() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// set the environment value on the workspace for the stack
	w.SetEnvVar("FOO", "bar")
}

func ExampleLocalWorkspace_UnsetEnvVar() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// set the environment value on the workspace for the stack
	w.SetEnvVar("FOO", "bar")
	// unset the environment value on the workspace for the stack
	w.UnsetEnvVar("FOO")
}

func ExampleLocalWorkspace_InstallPlugin() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	w.InstallPlugin(ctx, "aws", "v3.2.0")
}

func ExampleNewLocalWorkspace() {
	ctx := context.Background()
	// WorkDir sets the working directory for the LocalWorkspace. The workspace will look for a default
	// project settings file (Pulumi.yaml) in this location for information about the Pulumi program.
	wd := WorkDir(filepath.Join("..", "path", "to", "pulumi", "project"))
	// PulumiHome customizes the location of $PULUMI_HOME where metadata is stored and plugins are installed.
	ph := PulumiHome(filepath.Join("~", ".pulumi"))
	// Project provides ProjectSettings to set once the workspace is created.
	proj := Project(workspace.Project{
		Name:    tokens.PackageName("myproject"),
		Runtime: workspace.NewProjectRuntimeInfo("go", nil),
		Backend: &workspace.ProjectBackend{
			URL: "https://url.to.custom.saas.backend.com",
		},
	})
	_, _ = NewLocalWorkspace(ctx, wd, ph, proj)
}

func ExampleLocalWorkspace_secretsProvider() {
	ctx := context.Background()
	// WorkDir sets the working directory for the LocalWorkspace. The workspace will look for a default
	// project settings file (Pulumi.yaml) in this location for information about the Pulumi program.
	wd := WorkDir(filepath.Join("..", "path", "to", "pulumi", "project"))
	// PulumiHome customizes the location of $PULUMI_HOME where metadata is stored and plugins are installed.
	ph := PulumiHome(filepath.Join("~", ".pulumi"))
	// Project provides ProjectSettings to set once the workspace is created.
	proj := Project(workspace.Project{
		Name:    tokens.PackageName("myproject"),
		Runtime: workspace.NewProjectRuntimeInfo("go", nil),
		Backend: &workspace.ProjectBackend{
			URL: "https://url.to.custom.saas.backend.com",
		},
	})
	// Secrets provider provides a way of passing a non-default secrets provider to the
	// workspace and the stacks created from it. Supported secrets providers are:
	// `awskms`, `azurekeyvault`, `gcpkms`, `hashivault` and `passphrase`
	secretsProvider := SecretsProvider("awskms://alias/mysecretkeyalias")
	// EnvVars is a map of environment values scoped to the workspace.
	// These values will be passed to all Workspace and Stack level commands.
	envvars := EnvVars(map[string]string{
		"PULUMI_CONFIG_PASSPHRASE": "password",
	})
	_, _ = NewLocalWorkspace(ctx, wd, ph, proj, secretsProvider, envvars)
}

func ExampleLocalWorkspace_ListPlugins() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	ps, _ := w.ListPlugins(ctx)
	fmt.Println(ps[0].Size)
}

func ExampleLocalWorkspace_ListStacks() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	ss, _ := w.ListStacks(ctx)
	fmt.Println(ss[0].UpdateInProgress)
}

func ExampleLocalWorkspace_ProjectSettings() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// read existing project settings if any
	ps, err := w.ProjectSettings(ctx)
	if err != nil {
		// no Pulumi.yaml was found, so create a default
		ps = &workspace.Project{
			Name:    tokens.PackageName("myproject"),
			Runtime: workspace.NewProjectRuntimeInfo("go", nil),
		}
	}
	// make some changes
	author := "pulumipus"
	ps.Author = &author
	// save the settings back to the Workspace
	w.SaveProjectSettings(ctx, ps)
}

func ExampleLocalWorkspace_SaveProjectSettings() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	// read existing project settings if any
	ps, err := w.ProjectSettings(ctx)
	if err != nil {
		// no Pulumi.yaml was found, so create a default
		ps = &workspace.Project{
			Name:    tokens.PackageName("myproject"),
			Runtime: workspace.NewProjectRuntimeInfo("go", nil),
		}
	}
	// make some changes
	author := "pulumipus"
	ps.Author = &author
	// save the settings back to the Workspace
	w.SaveProjectSettings(ctx, ps)
}

func ExampleLocalWorkspace_RefreshConfig() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackNameA := FullyQualifiedStackName("org", "proj", "stackA")
	// get the last deployed config from stack A
	// this overwrites config in pulumi.stackA.yaml
	cfg, _ := w.RefreshConfig(ctx, stackNameA)
	// add a key to the ConfigMap
	cfg["addition_config_key"] = ConfigValue{Value: "additional_config_value"}
	// create a new stack
	stackNameB := FullyQualifiedStackName("org", "proj", "stackB")
	w.CreateStack(ctx, stackNameB)
	// save the modified config to stackB
	w.SetAllConfig(ctx, stackNameB, cfg)
}

func ExampleLocalWorkspace_RemoveAllConfig() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackName := FullyQualifiedStackName("org", "proj", "stackA")
	// get all config currently set in the workspace
	cfg, _ := w.GetAllConfig(ctx, stackName)
	var keys []string
	for k := range cfg {
		keys = append(keys, k)
	}
	// remove those config values
	_ = w.RemoveAllConfig(ctx, stackName, keys)
}

func ExampleLocalWorkspace_RemoveConfig() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackName := FullyQualifiedStackName("org", "proj", "stackA")
	_ = w.RemoveConfig(ctx, stackName, "key_to_remove")
}

func ExampleLocalWorkspace_RemovePlugin() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	_ = w.RemovePlugin(ctx, "aws", "v3.2.0")
}

func ExampleLocalWorkspace_RemoveStack() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackName := FullyQualifiedStackName("org", "proj", "stack")
	_ = w.RemoveStack(ctx, stackName)
}

func ExampleLocalWorkspace_SelectStack() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackName := FullyQualifiedStackName("org", "proj", "existing_stack")
	_ = w.SelectStack(ctx, stackName)
}

func ExampleLocalWorkspace_SetAllConfig() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackNameA := FullyQualifiedStackName("org", "proj", "stackA")
	// get the last deployed config from stack A
	// this overwrites config in pulumi.stackA.yaml
	cfg, _ := w.RefreshConfig(ctx, stackNameA)
	// add a key to the ConfigMap
	cfg["addition_config_key"] = ConfigValue{Value: "additional_config_value"}
	// create a new stack
	stackNameB := FullyQualifiedStackName("org", "proj", "stackB")
	w.CreateStack(ctx, stackNameB)
	// save the modified config to stackB
	w.SetAllConfig(ctx, stackNameB, cfg)
}

func ExampleLocalWorkspace_SetProgram() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	program := func(pCtx *pulumi.Context) error {
		pCtx.Export("an output", pulumi.String("an output value"))
		return nil
	}
	// this program will be used for all Stack.Update and Stack.Preview operations going forward
	w.SetProgram(program)
}

func ExampleLocalWorkspace_Stack() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	s, _ := w.Stack(ctx)
	fmt.Println(s.UpdateInProgress)
}

func ExampleLocalWorkspace_StackSettings() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackNameA := FullyQualifiedStackName("org", "proj", "stackA")
	// read existing stack settings for stackA if any
	ss, err := w.StackSettings(ctx, stackNameA)
	if err != nil {
		// no pulumi.stackA.yaml was found, so create a default
		ss = &workspace.ProjectStack{}
	}
	stackNameB := FullyQualifiedStackName("org", "proj", "stackB")
	// copy the settings to stackB
	w.SaveStackSettings(ctx, stackNameB, ss)
}

func ExampleLocalWorkspace_SaveStackSettings() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackNameA := FullyQualifiedStackName("org", "proj", "stackA")
	// read existing stack settings for stackA if any
	ss, err := w.StackSettings(ctx, stackNameA)
	if err != nil {
		// no pulumi.stackA.yaml was found, so create a default
		ss = &workspace.ProjectStack{}
	}
	stackNameB := FullyQualifiedStackName("org", "proj", "stackB")
	// copy the settings to stackB
	w.SaveStackSettings(ctx, stackNameB, ss)
}

func ExampleLocalWorkspace_WhoAmI() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	user, _ := w.WhoAmI(ctx)
	fmt.Println(user)
}

func ExampleSetupFn() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("myOrg", "nodejs_project", "myStack")

	repo := GitRepo{
		URL:         "https://some.example.repo.git",
		ProjectPath: "goproj",
		// this call back will get executed post-clone to allow for additional program setup
		Setup: func(ctx context.Context, workspace Workspace) error {
			// restore node dependencies required to run the program
			cmd := exec.Command("npm", "install")
			cmd.Dir = workspace.WorkDir()
			return cmd.Run()
		},
	}

	// initialize a stack from the git repo
	NewStackRemoteSource(ctx, stackName, repo)
}

func ExampleStack() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "dev_stack")
	cfg := ConfigMap{
		"bar": ConfigValue{
			Value: "abc",
		},
		"buzz": ConfigValue{
			Value:  "secret",
			Secret: true,
		},
	}

	// initialize
	pDir := filepath.Join(".", "project")
	s, err := NewStackLocalSource(ctx, stackName, pDir)
	if err != nil {
		// Handle failure creating stack.
	}

	defer func() {
		// Workspace operations can be accessed via Stack.Workspace()
		// -- pulumi stack rm --
		err = s.Workspace().RemoveStack(ctx, s.Name())
	}()

	err = s.SetAllConfig(ctx, cfg)
	if err != nil {
		// Handle failure setting configurations.
	}

	// -- pulumi up --
	res, err := s.Up(ctx)
	if err != nil {
		// Handle failure updating stack.
	}
	fmt.Println(len(res.Outputs))

	// -- pulumi preview --

	prev, err := s.Preview(ctx)
	if err != nil {
		// Handle failure previewing stack.
	}
	// no changes after the update
	fmt.Println(prev.ChangeSummary["same"])

	// -- pulumi refresh --

	ref, err := s.Refresh(ctx)
	if err != nil {
		// Handle error during refresh.
	}
	// Success!
	fmt.Println(ref.Summary.Result)

	// -- pulumi destroy --

	_, err = s.Destroy(ctx)
	if err != nil {
		// Handle error during destroy.
	}
}

func ExampleNewStack() {
	ctx := context.Background()
	w, err := NewLocalWorkspace(ctx)
	if err != nil {
		// Handle error creating workspace.
	}

	stackName := FullyQualifiedStackName("org", "proj", "stack")
	stack, err := NewStack(ctx, stackName, w)
	if err != nil {
		// Handle error creating stack.
	}
	_, err = stack.Up(ctx)
	if err != nil {
		// Handle error updating stack.
	}
}

func ExampleUpsertStack() {
	ctx := context.Background()
	w, err := NewLocalWorkspace(ctx)
	if err != nil {
		// Handle error creating workspace.
	}

	stackName := FullyQualifiedStackName("org", "proj", "stack")
	stack, err := UpsertStack(ctx, stackName, w)
	if err != nil {
		// Handle error creating/updating stack.
	}
	_, err = stack.Up(ctx)
	if err != nil {
		// Handle error during update.
	}
}

func ExampleNewStackInlineSource() {
	ctx := context.Background()
	projName := "proj"
	stackName := FullyQualifiedStackName("myOrg", projName, "stack")
	// create a new Stack with a default ProjectSettings file, and a temporary WorkDir created in a new
	// LocalWorkspace on behalf of the user.
	stack, _ := NewStackInlineSource(ctx, stackName, projName, func(pCtx *pulumi.Context) error {
		pCtx.Export("outputA", pulumi.String("valueA"))
		return nil
	})
	// Stack.Up runs the inline pulumi.RunFunc specified above.
	stack.Up(ctx)
	// we can update the Workspace program for subsequent updates if desired
	stack.Workspace().SetProgram(func(pCtx *pulumi.Context) error {
		pCtx.Export("outputAA", pulumi.String("valueAA"))
		return nil
	})
	stack.Up(ctx)
}

func ExampleUpsertStackInlineSource() {
	ctx := context.Background()
	projName := "proj"
	stackName := FullyQualifiedStackName("myOrg", "proj", "stack")
	// create or select a new Stack with a default ProjectSettings file, and a temporary WorkDir created in a new
	// LocalWorkspace on behalf of the user.
	stack, _ := UpsertStackInlineSource(ctx, stackName, projName, func(pCtx *pulumi.Context) error {
		pCtx.Export("outputA", pulumi.String("valueA"))
		return nil
	})
	// Stack.Up runs the inline pulumi.RunFunc specified above.
	stack.Up(ctx)
	// we can update the Workspace program for subsequent updates if desired
	stack.Workspace().SetProgram(func(pCtx *pulumi.Context) error {
		pCtx.Export("outputAA", pulumi.String("valueAA"))
		return nil
	})
	stack.Up(ctx)
}

func ExampleSelectStackInlineSource() {
	ctx := context.Background()
	projName := "proj"
	stackName := FullyQualifiedStackName("myOrg", projName, "existing_stack")
	// selects an existing stack with a default ProjectSettings file, and a temporary WorkDir in a new LocalWorkspace
	// created on behalf of the user.
	stack, _ := SelectStackInlineSource(ctx, stackName, projName, func(pCtx *pulumi.Context) error {
		pCtx.Export("outputA", pulumi.String("valueA"))
		return nil
	})
	// Stack.Up runs the inline pulumi.RunFunc specified above.
	stack.Up(ctx)
	// we can update the Workspace program for subsequent updates if desired
	stack.Workspace().SetProgram(func(pCtx *pulumi.Context) error {
		pCtx.Export("outputAA", pulumi.String("valueAA"))
		return nil
	})
	stack.Up(ctx)
}

func ExampleNewStackLocalSource() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("myOrg", "proj", "stack")
	workDir := filepath.Join(".", "program", "dir")
	// creates a new stack with a new LocalWorkspace created from provided WorkDir. This Workspace will pick up
	// any available Settings files (Pulumi.yaml, Pulumi.<stack>.yaml)
	stack, _ := NewStackLocalSource(ctx, stackName, workDir)
	// Stack.Up runs the program in workDir
	stack.Up(ctx)
	// we can update the Workspace program for subsequent updates if desired
	stack.Workspace().SetProgram(func(pCtx *pulumi.Context) error {
		pCtx.Export("outputAA", pulumi.String("valueAA"))
		return nil
	})
	// Stack.Up now runs our inline program
	stack.Up(ctx)
}

func ExampleUpsertStackLocalSource() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("myOrg", "proj", "stack")
	workDir := filepath.Join(".", "program", "dir")
	// create or select a new stack with a new LocalWorkspace created from provided WorkDir. This Workspace will pick up
	// any available Settings files (Pulumi.yaml, Pulumi.<stack>.yaml)
	stack, _ := UpsertStackLocalSource(ctx, stackName, workDir)
	// Stack.Up runs the program in workDir
	stack.Up(ctx)
	// we can update the Workspace program for subsequent updates if desired
	stack.Workspace().SetProgram(func(pCtx *pulumi.Context) error {
		pCtx.Export("outputAA", pulumi.String("valueAA"))
		return nil
	})
	// Stack.Up now runs our inline program
	stack.Up(ctx)
}

func ExampleSelectStackLocalSource() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("myOrg", "proj", "stack")
	workDir := filepath.Join(".", "program", "dir")
	// selects an existing stack with a new LocalWorkspace created from provided WorkDir. This Workspace will pick up
	// any available Settings files (Pulumi.yaml, Pulumi.<stack>.yaml)
	stack, _ := SelectStackLocalSource(ctx, stackName, workDir)
	// Stack.Up runs the program in workDir
	stack.Up(ctx)
	// we can update the Workspace program for subsequent updates if desired
	stack.Workspace().SetProgram(func(pCtx *pulumi.Context) error {
		pCtx.Export("outputAA", pulumi.String("valueAA"))
		return nil
	})
	// Stack.Up now runs our inline program
	stack.Up(ctx)
}

func ExampleNewStackRemoteSource() {
	ctx := context.Background()
	pName := "go_remote_proj"
	stackName := FullyQualifiedStackName("myOrg", pName, "myStack")

	// we'll compile a the program into an executable with the name "examplesBinary"
	binName := "examplesBinary"
	// a description of the git repo to clone
	repo := GitRepo{
		URL: "https://github.com/pulumi/test-repo.git",
		// the subdirectory relative to the root of the repo
		ProjectPath: "goproj",
		// this call back will get executed post-clone to allow for additional program setup
		Setup: func(ctx context.Context, workspace Workspace) error {
			cmd := exec.Command("go", "build", "-o", binName, "main.go")
			cmd.Dir = workspace.WorkDir()
			return cmd.Run()
		},
	}
	// an override to the project file in the git repo, specifying our pre-built executable
	project := workspace.Project{
		Name: tokens.PackageName(pName),
		Runtime: workspace.NewProjectRuntimeInfo("go", map[string]interface{}{
			"binary": binName,
		}),
	}

	// initialize a stack from the git repo, specifying our project override
	NewStackRemoteSource(ctx, stackName, repo, Project(project))
}

func ExampleUpsertStackRemoteSource() {
	ctx := context.Background()
	pName := "go_remote_proj"
	stackName := FullyQualifiedStackName("myOrg", pName, "myStack")

	// we'll compile a the program into an executable with the name "examplesBinary"
	binName := "examplesBinary"
	// a description of the git repo to clone
	repo := GitRepo{
		URL: "https://github.com/pulumi/test-repo.git",
		// the subdirectory relative to the root of the repo
		ProjectPath: "goproj",
		// this call back will get executed post-clone to allow for additional program setup
		Setup: func(ctx context.Context, workspace Workspace) error {
			cmd := exec.Command("go", "build", "-o", binName, "main.go")
			cmd.Dir = workspace.WorkDir()
			return cmd.Run()
		},
	}
	// an override to the project file in the git repo, specifying our pre-built executable
	project := workspace.Project{
		Name: tokens.PackageName(pName),
		Runtime: workspace.NewProjectRuntimeInfo("go", map[string]interface{}{
			"binary": binName,
		}),
	}

	// initialize or select a stack from the git repo, specifying our project override
	UpsertStackRemoteSource(ctx, stackName, repo, Project(project))
}

func ExampleSelectStackRemoteSource() {
	ctx := context.Background()
	pName := "go_remote_proj"
	stackName := FullyQualifiedStackName("myOrg", pName, "myStack")

	// we'll compile a the program into an executable with the name "examplesBinary"
	binName := "examplesBinary"
	// a description of the git repo to clone
	repo := GitRepo{
		URL: "https://github.com/pulumi/test-repo.git",
		// the subdirectory relative to the root of the repo
		ProjectPath: "goproj",
		// this call back will get executed post-clone to allow for additional program setup
		Setup: func(ctx context.Context, workspace Workspace) error {
			cmd := exec.Command("go", "build", "-o", binName, "main.go")
			cmd.Dir = workspace.WorkDir()
			return cmd.Run()
		},
	}
	// an override to the project file in the git repo, specifying our pre-built executable
	project := workspace.Project{
		Name: tokens.PackageName(pName),
		Runtime: workspace.NewProjectRuntimeInfo("go", map[string]interface{}{
			"binary": binName,
		}),
	}

	// select an existing stack using a LocalWorkspace created from the git repo, specifying our project override
	SelectStackRemoteSource(ctx, stackName, repo, Project(project))
}

func ExampleStack_Destroy() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	// select an existing stack to destroy
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	stack.Destroy(ctx, optdestroy.Message("a message to save with the destroy operation"))
}

func ExampleStack_Destroy_streamingProgress() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	// select an existing stack to destroy
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	// create a temp file that we can tail during while our program runs
	tmp, _ := ioutil.TempFile(os.TempDir(), "")
	// optdestroy.ProgressStreams allows us to stream incremental output to stdout, a file to tail, etc.
	// this gives us incremental status over time
	progressStreams := []io.Writer{os.Stdout, tmp}
	// this destroy will incrementally stream unstructured progress messages to stdout and our temp file
	stack.Destroy(ctx, optdestroy.ProgressStreams(progressStreams...))
}

func ExampleStack_Up() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	// create a new stack to update
	stack, _ := NewStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	result, _ := stack.Up(ctx, optup.Message("a message to save with the up operation"), optup.Parallel(10000))
	permalink, _ := result.GetPermalink()
	fmt.Println(permalink)
}

func ExampleStack_Up_streamingProgress() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	// create a new stack to update
	stack, _ := NewStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	// create a temp file that we can tail during while our program runs
	tmp, _ := ioutil.TempFile(os.TempDir(), "")
	// optup.ProgressStreams allows us to stream incremental output to stdout, a file to tail, etc.
	// this gives us incremental status over time
	progressStreams := []io.Writer{os.Stdout, tmp}
	// this update will incrementally stream unstructured progress messages to stdout and our temp file
	stack.Up(ctx, optup.ProgressStreams(progressStreams...))
}

func ExampleStack_Preview() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	// create a new stack and preview changes
	stack, _ := NewStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	stack.Preview(ctx, optpreview.Message("a message to save with the preive operation"))
}

func ExampleStack_Refresh() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	// select an existing stack and refresh the resources under management
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	stack.Refresh(ctx, optrefresh.Message("a message to save with the refresh operation"))
}

func ExampleStack_Refresh_streamingProgress() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	// select an existing stack and refresh the resources under management
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	// create a temp file that we can tail during while our program runs
	tmp, _ := ioutil.TempFile(os.TempDir(), "")
	// optrefresh.ProgressStreams allows us to stream incremental output to stdout, a file to tail, etc.
	// this gives us incremental status over time
	progressStreams := []io.Writer{os.Stdout, tmp}
	// this refresh will incrementally stream unstructured progress messages to stdout and our temp file
	stack.Refresh(ctx, optrefresh.ProgressStreams(progressStreams...))
}

func ExampleStack_GetAllConfig() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	cfg, _ := stack.GetAllConfig(ctx)
	fmt.Println(cfg["config_key"].Value)
	fmt.Println(cfg["config_key"].Secret)
}

func ExampleStack_GetConfig() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	cfgVal, _ := stack.GetConfig(ctx, "config_key")
	fmt.Println(cfgVal.Value)
	fmt.Println(cfgVal.Secret)
}

func ExampleStack_History() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	pageSize := 0 // fetch all history entries, don't paginate
	page := 0     // fetch all history entries, don't paginate
	hist, _ := stack.History(ctx, pageSize, page)
	// last operation start time
	fmt.Println(hist[0].StartTime)
}

func ExampleStack_Info() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	info, _ := stack.Info(ctx)
	// url to view the Stack in the Pulumi SaaS or other backend
	fmt.Println(info.URL)
}

func ExampleStack_Outputs() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	outs, _ := stack.Outputs(ctx)
	fmt.Println(outs["key"].Value.(string))
	fmt.Println(outs["key"].Secret)
}

func ExampleStack_RefreshConfig() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	// get the last deployed config from stack and overwrite Pulumi.stack.yaml
	_, _ = stack.RefreshConfig(ctx)
}

func ExampleStack_RemoveConfig() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	// remove config matching the specified key
	_ = stack.RemoveConfig(ctx, "key_to_remove")
}

func ExampleStack_RemoveAllConfig() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	// remove config matching the specified keys
	_ = stack.RemoveAllConfig(ctx, []string{"key0", "key1", "...", "keyN"})
}

func ExampleStack_SetConfig() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	// set config key-value pair
	_ = stack.SetConfig(ctx, "key_to_set", ConfigValue{Value: "abc", Secret: true})
}

func ExampleStack_SetAllConfig() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	cfg := ConfigMap{
		"key0": ConfigValue{Value: "abc", Secret: true},
		"key1": ConfigValue{Value: "def"},
	}
	// set all config in map
	_ = stack.SetAllConfig(ctx, cfg)
}

func ExampleStack_Cancel() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	// attempt to cancel the in progress operation
	// note that this operation is _very dangerous_, and may leave the stack in an inconsistent state.
	_ = stack.Cancel(ctx)
}

func ExampleStack_Export() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	dep, _ := stack.Export(ctx)
	// import/export is backwards compatible, and we must write code specific to the verison we're dealing with.
	if dep.Version != 3 {
		panic("expected deployment version 3")
	}
	var state apitype.DeploymentV3
	_ = json.Unmarshal(dep.Deployment, &state)

	// ... perform edits on the state ...

	// marshal out updated deployment state
	bytes, _ := json.Marshal(state)
	dep.Deployment = bytes
	// import our edited deployment state back to our stack
	_ = stack.Import(ctx, dep)
}

func ExampleStack_Import() {
	ctx := context.Background()
	stackName := FullyQualifiedStackName("org", "project", "stack")
	stack, _ := SelectStackLocalSource(ctx, stackName, filepath.Join(".", "program"))
	dep, _ := stack.Export(ctx)
	// import/export is backwards compatible, and we must write code specific to the verison we're dealing with.
	if dep.Version != 3 {
		panic("expected deployment version 3")
	}
	var state apitype.DeploymentV3
	_ = json.Unmarshal(dep.Deployment, &state)

	// ... perform edits on the state ...

	// marshal out updated deployment state
	bytes, _ := json.Marshal(state)
	dep.Deployment = bytes
	// import our edited deployment state back to our stack
	_ = stack.Import(ctx, dep)
}

func ExampleLocalWorkspace_ExportStack() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackName := FullyQualifiedStackName("org", "proj", "existing_stack")
	dep, _ := w.ExportStack(ctx, stackName)
	// import/export is backwards compatible, and we must write code specific to the verison we're dealing with.
	if dep.Version != 3 {
		panic("expected deployment version 3")
	}
	var state apitype.DeploymentV3
	_ = json.Unmarshal(dep.Deployment, &state)

	// ... perform edits on the state ...

	// marshal out updated deployment state
	bytes, _ := json.Marshal(state)
	dep.Deployment = bytes
	// import our edited deployment state back to our stack
	_ = w.ImportStack(ctx, stackName, dep)
}

func ExampleLocalWorkspace_ImportStack() {
	ctx := context.Background()
	// create a workspace from a local project
	w, _ := NewLocalWorkspace(ctx, WorkDir(filepath.Join(".", "program")))
	stackName := FullyQualifiedStackName("org", "proj", "existing_stack")
	dep, _ := w.ExportStack(ctx, stackName)
	// import/export is backwards compatible, and we must write code specific to the verison we're dealing with.
	if dep.Version != 3 {
		panic("expected deployment version 3")
	}
	var state apitype.DeploymentV3
	_ = json.Unmarshal(dep.Deployment, &state)

	// ... perform edits on the state ...

	// marshal out updated deployment state
	bytes, _ := json.Marshal(state)
	dep.Deployment = bytes
	// import our edited deployment state back to our stack
	_ = w.ImportStack(ctx, stackName, dep)
}