package newproject

import (
	"os"
	"path/filepath"
	"strings"
	"testing"

	"github.com/MDietermann/ArduinoArchSetup/internal/config"
)

func sampleCfg() config.Config {
	return config.Config{
		Scaffolding: config.Scaffolding{Boards: []config.Board{
			{Name: "uno", FQBN: "arduino:avr:uno", Template: "uno"},
			{Name: "xyz", FQBN: "fake:fqbn:xyz", Template: "does-not-exist"},
		}},
	}
}

func TestRunCreatesProject(t *testing.T) {
	dir := t.TempDir()
	t.Chdir(dir)
	if err := Run(sampleCfg(), "blinky", "uno"); err != nil {
		t.Fatal(err)
	}
	ino, err := os.ReadFile(filepath.Join("blinky", "blinky.ino"))
	if err != nil {
		t.Fatalf("blinky.ino missing: %v", err)
	}
	if len(ino) == 0 {
		t.Error("blinky.ino empty")
	}
	sketch, err := os.ReadFile(filepath.Join("blinky", "sketch.yaml"))
	if err != nil {
		t.Fatalf("sketch.yaml missing: %v", err)
	}
	if !strings.Contains(string(sketch), "arduino:avr:uno") {
		t.Errorf("sketch.yaml missing fqbn: %s", sketch)
	}
	if _, err := os.Stat(filepath.Join("blinky", ".clangd")); err != nil {
		t.Errorf(".clangd missing: %v", err)
	}
}

func TestRunRefusesExistingDir(t *testing.T) {
	dir := t.TempDir()
	t.Chdir(dir)
	os.Mkdir("blinky", 0o755)
	if err := Run(sampleCfg(), "blinky", "uno"); err == nil {
		t.Fatal("want error on existing dir")
	}
}

func TestRunFallsBackToDefaultTemplate(t *testing.T) {
	dir := t.TempDir()
	t.Chdir(dir)
	if err := Run(sampleCfg(), "thing", "xyz"); err != nil {
		t.Fatal(err)
	}
	if _, err := os.Stat(filepath.Join("thing", "thing.ino")); err != nil {
		t.Fatalf("thing.ino missing: %v", err)
	}
}

func TestRunUnknownBoardErrors(t *testing.T) {
	dir := t.TempDir()
	t.Chdir(dir)
	err := Run(sampleCfg(), "thing", "bogus")
	if err == nil {
		t.Fatal("want error")
	}
	if !strings.Contains(err.Error(), "uno") {
		t.Errorf("error should list valid boards: %v", err)
	}
}

func TestRunRejectsSlashInProjectName(t *testing.T) {
	dir := t.TempDir()
	t.Chdir(dir)
	if err := Run(sampleCfg(), "bad/name", "uno"); err == nil {
		t.Fatal("want error on slashes")
	}
}