package preflight

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

	"gitea.maximumdirect.net/eric/audita/v3/internal/core/config"
	"gitea.maximumdirect.net/eric/audita/v3/internal/core/diagnostics"
	"gitea.maximumdirect.net/eric/audita/v3/internal/core/schema"
)

func TestReadinessAndCollisionPrecedeOutputPreparation(t *testing.T) {
	dir := t.TempDir()
	output := filepath.Join(dir, "output.json")
	if _, err := Prepare(context.Background(), Input{Config: &config.Config{}, Output: diagnostics.OutputSelection{TranscriptPath: output}}); err == nil {
		t.Fatal("missing transcript accepted")
	}
	if _, err := os.Stat(output); !os.IsNotExist(err) {
		t.Fatalf("output created: %v", err)
	}
	if _, err := Prepare(context.Background(), Input{Config: &config.Config{}, Transcript: &schema.SourceTranscript{}, Output: diagnostics.OutputSelection{TranscriptPath: output, ProtectedPaths: []string{output}}}); err == nil {
		t.Fatal("collision accepted")
	}
	entries, err := os.ReadDir(dir)
	if err != nil || len(entries) != 0 {
		t.Fatalf("prepared before check: %v %v", entries, err)
	}
}

func TestOptionalDebugFailureDoesNotPreventPreparation(t *testing.T) {
	dir := t.TempDir()
	blocked := filepath.Join(dir, "file")
	if err := os.WriteFile(blocked, []byte("x"), 0600); err != nil {
		t.Fatal(err)
	}
	result, err := Prepare(context.Background(), Input{Config: &config.Config{}, Transcript: &schema.SourceTranscript{}, Output: diagnostics.OutputSelection{TranscriptPath: filepath.Join(dir, "output")}, Debug: &DebugInput{WorkDir: blocked, RunID: "run"}})
	if err != nil {
		t.Fatal(err)
	}
	if len(result.Warnings) == 0 || result.Debug != nil {
		t.Fatalf("debug=%v warnings=%v", result.Debug, result.Warnings)
	}
	if err := result.Output.Close(); err != nil {
		t.Fatal(err)
	}
}