package app

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

	"gitea.maximumdirect.net/eric/narratio/internal/artifacts"
)

func TestPlanCreatesAndReusesWorkdir(t *testing.T) {
	workspaceRoot := t.TempDir()
	pipelinePath, sessionPath := writeValidConfigFiles(t, workspaceRoot)

	var out bytes.Buffer
	args := []string{"--config", pipelinePath, "--session", sessionPath}

	if err := Plan(context.Background(), args, &out); err != nil {
		t.Fatalf("first Plan() error = %v", err)
	}
	if !strings.Contains(out.String(), "workdir prepared") {
		t.Fatalf("first output = %q, want workdir prepared", out.String())
	}

	sessionWorkdir := artifacts.SessionWorkDir(workspaceRoot, "2026-05-03")
	expectedDirs := []string{
		sessionWorkdir,
		filepath.Join(sessionWorkdir, "inputs"),
		filepath.Join(sessionWorkdir, "audio"),
		filepath.Join(sessionWorkdir, "transcripts", "raw"),
		filepath.Join(sessionWorkdir, "transcripts", "normalized"),
		filepath.Join(sessionWorkdir, "artifacts"),
		filepath.Join(sessionWorkdir, "config"),
		filepath.Join(sessionWorkdir, "logs"),
	}
	for _, dir := range expectedDirs {
		assertDir(t, dir)
	}

	out.Reset()
	if err := Plan(context.Background(), args, &out); err != nil {
		t.Fatalf("second Plan() error = %v", err)
	}
	if !strings.Contains(out.String(), "workdir prepared") {
		t.Fatalf("second output = %q, want workdir prepared", out.String())
	}
}

func assertDir(t *testing.T, path string) {
	t.Helper()
	info, err := os.Stat(path)
	if err != nil {
		t.Fatalf("Stat(%q) error = %v", path, err)
	}
	if !info.IsDir() {
		t.Fatalf("%q is not a directory", path)
	}
}