package bonfire_test

import (
	"context"
	"fmt"
	"os"
	"strings"

	"git.golem15.com/golem15/summercms/modules/bonfire"
)

func ExampleCall() {
	commands := []bonfire.Command{{
		Name:        "acme:greet",
		Description: "Greet someone by name",
		Args:        []bonfire.Arg{{Name: "name", Required: true}},
		Run: func(ctx context.Context, in bonfire.Input, out bonfire.Output) error {
			name, _ := in.Argument("name")
			out.Printf("Hello, %s\n", name)
			return nil
		},
	}}

	if err := bonfire.Call(context.Background(), commands, "acme:greet", []string{"blog"}, os.Stdout); err != nil {
		fmt.Println(err)
	}
	// Output: Hello, blog
}

func ExampleCatalog() {
	publish := bonfire.Command{
		Name:        "blog:publish",
		Description: "Publish a post",
		Args:        []bonfire.Arg{{Name: "slug", Description: "Post slug", Required: true}},
		Flags: []bonfire.Flag{
			{Name: "dry-run", Description: "Report without writing", Bare: true},
			{Name: "tag", Description: "Tag to add (repeatable)", Repeatable: true},
		},
		Run: func(ctx context.Context, in bonfire.Input, out bonfire.Output) error {
			slug, _ := in.Argument("slug")
			dryRun, _ := in.Flag("dry-run")
			out.Printf("publish %s, tags %v, dry run %s\n", slug, in.Flags("tag"), dryRun)
			return nil
		},
	}

	// The generated main publishes a catalog of every command on the app.
	catalog := bonfire.NewCatalog([]bonfire.Command{publish})
	args := []string{"hello-world", "--tag", "news", "--tag", "go", "--dry-run"}
	if err := catalog.Call(context.Background(), "blog:publish", args, os.Stdout); err != nil {
		fmt.Println(err)
	}
	// Output: publish hello-world, tags [news go], dry run true
}

func ExampleExample() {
	export := bonfire.Command{
		Name:        "blog:export",
		Description: "Export published posts as JSON",
		Long:        "Writes every published post, newest first, to a JSON file.",
		Flags: []bonfire.Flag{
			{Name: "path", Description: "Output file", Default: "posts.json"},
		},
		Examples: []bonfire.Example{
			{Command: "blog:export --path=backup.json", Description: "Export to another file"},
		},
		Run: func(ctx context.Context, in bonfire.Input, out bonfire.Output) error {
			return nil
		},
	}
	// Hidden commands run, but list shows them only with --all.
	cleanup := bonfire.Command{
		Name:        "blog:cleanup",
		Description: "Remove orphaned uploads",
		Hidden:      true,
	}

	root, err := bonfire.NewRootIO("acme", []bonfire.Command{export, cleanup}, strings.NewReader(""), os.Stdout, os.Stdout)
	if err != nil {
		fmt.Println(err)
		return
	}
	bonfire.Execute(context.Background(), root, []string{"help", "blog:export"})
	// Output:
	// Description:
	//   Export published posts as JSON
	//
	// Usage:
	//   blog:export [options]
	//
	// Options:
	//       --path=PATH  Output file [default: "posts.json"]
	//
	// Global options:
	//   -h, --help            Display help for the given command
	//   -q, --quiet           Do not output any message
	//   -v|vv|vvv             Increase verbosity
	//       --ansi|no-ansi    Force (or disable) ANSI output
	//   -n, --no-interaction  Do not ask any interactive question
	//       --env             The environment the command runs under
	//
	// Help:
	//   Writes every published post, newest first, to a JSON file.
	//
	// Examples:
	//   # Export to another file
	//   bin/acme blog:export --path=backup.json
}

func ExampleWithHint() {
	publish := bonfire.Command{
		Name:        "blog:publish",
		Description: "Publish a draft post",
		Args:        []bonfire.Arg{{Name: "slug", Description: "Post slug", Required: true}},
		Run: func(ctx context.Context, in bonfire.Input, out bonfire.Output) error {
			slug, _ := in.Argument("slug")
			return bonfire.WithHint(fmt.Errorf("blog: no draft named %q", slug),
				"Only drafts can be published; published posts keep their slug.",
				"{bin} blog:drafts")
		},
	}

	root, err := bonfire.NewRootIO("acme", []bonfire.Command{publish}, strings.NewReader(""), os.Stdout, os.Stdout)
	if err != nil {
		fmt.Println(err)
		return
	}
	code := bonfire.Execute(context.Background(), root, []string{"blog:publish", "hello-world"})
	fmt.Println("exit code:", code)
	// Output:
	// ERROR  blog: no draft named "hello-world"
	//
	//   Only drafts can be published; published posts keep their slug.
	//
	//   Try:
	//     bin/acme blog:drafts
	//
	//   Run with -v for details.
	//
	// exit code: 1
}

func ExampleCheckDocs() {
	commands := []bonfire.Command{
		{
			Name:        "blog:publish",
			Description: "Publish a draft post",
			Long:        "Publishes the draft with the given slug and notifies subscribers.",
			Args:        []bonfire.Arg{{Name: "slug", Description: "Post slug", Required: true}},
			Examples:    []bonfire.Example{{Command: "blog:publish hello-world"}},
		},
		{
			Name:        "blog:reindex",
			Description: "Rebuild the search index",
			Flags:       []bonfire.Flag{{Name: "batch", Default: "500"}},
		},
	}
	for _, problem := range bonfire.CheckDocs(commands) {
		fmt.Println(problem)
	}
	// Output: blog:reindex: missing long help, examples, option --batch description
}