package main

import (
	"bytes"
	"context"
	"io"
	"strings"
	"testing"

	commandkit "gitea.maximumdirect.net/eric/CommandKit"
)

func TestAliasesReachCoreExampleCommand(t *testing.T) {
	app, err := newApp()
	if err != nil {
		t.Fatal(err)
	}
	for _, test := range []struct {
		name      string
		args      []string
		entered   string
		canonical string
		greeting  string
	}{
		{name: "command shortcut and scoped flag", args: []string{"hello", "--times=0", "--tag", "one"}, entered: "hello", canonical: "workspace greet", greeting: "count=explicit 0; tags=explicit [one]"},
		{name: "group shortcut", args: []string{"ws", "greet", "--count=2"}, entered: "ws greet", canonical: "workspace greet", greeting: "count=explicit 2"},
		{name: "canonical command", args: []string{"workspace", "greet"}, entered: "workspace greet", canonical: "workspace greet", greeting: "count=default 1 (not supplied)"},
	} {
		t.Run(test.name, func(t *testing.T) {
			var output bytes.Buffer
			outcome := app.Execute(context.Background(), test.args, commandkit.Streams{Out: &output, Err: io.Discard})
			if outcome.Kind != commandkit.OutcomeSuccess {
				t.Fatalf("Execute(%q) = %#v; output %q", test.args, outcome, output.String())
			}
			for _, fragment := range []string{
				test.greeting,
				"entered=\"" + test.entered + "\"",
				"canonical=\"" + test.canonical + "\"",
			} {
				if !strings.Contains(output.String(), fragment) {
					t.Errorf("output %q does not contain %q", output.String(), fragment)
				}
			}
		})
	}
}

func TestGlobalHelpAliasDoesNotRunCoreExampleCommand(t *testing.T) {
	app, err := newApp()
	if err != nil {
		t.Fatal(err)
	}
	var output bytes.Buffer
	outcome := app.Execute(context.Background(), []string{"hello", "--hlep"}, commandkit.Streams{Out: &output, Err: io.Discard})
	if outcome.Kind != commandkit.OutcomeSuccess || !strings.Contains(output.String(), "--hlep → --help") || strings.Contains(output.String(), "Hello;") {
		t.Fatalf("help alias outcome/output = (%#v, %q)", outcome, output.String())
	}
	output.Reset()
	outcome = app.Execute(context.Background(), []string{"ws", "--help"}, commandkit.Streams{Out: &output, Err: io.Discard})
	if outcome.Kind != commandkit.OutcomeSuccess || !strings.Contains(output.String(), "greet") || strings.Contains(output.String(), "Hello;") {
		t.Fatalf("group shortcut help outcome/output = (%#v, %q)", outcome, output.String())
	}
}