package debugbundle

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

	"gitea.maximumdirect.net/eric/notarius/internal/core/artifacts"
	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
)

func TestAllocateCreatesRestrictiveSummaryAndTrace(t *testing.T) {
	parent := t.TempDir()
	fixed := time.Unix(0, 42).UTC()
	previous := utcNow
	utcNow = func() time.Time { return fixed }
	defer func() { utcNow = previous }()
	bundle, err := Allocate(parent)
	if err != nil {
		t.Fatal(err)
	}
	if bundle.RunID() != "run-42" || bundle.SummaryRoot() != filepath.Join(bundle.Path(), "summary") || bundle.TraceRoot() != filepath.Join(bundle.Path(), "trace") {
		t.Fatalf("bundle=%#v", bundle)
	}
	for _, path := range []string{bundle.Path(), bundle.SummaryRoot(), bundle.TraceRoot()} {
		info, err := os.Stat(path)
		if err != nil {
			t.Fatal(err)
		}
		if info.Mode().Perm() != 0o700 {
			t.Fatalf("%s mode=%#o", path, info.Mode().Perm())
		}
	}
	if err := bundle.Summary().WriteError("failed"); err != nil {
		t.Fatal(err)
	}
	info, err := os.Stat(filepath.Join(bundle.SummaryRoot(), ArtifactErrorLog))
	if err != nil {
		t.Fatal(err)
	}
	if info.Mode().Perm() != 0o600 {
		t.Fatalf("file mode=%#o", info.Mode().Perm())
	}
}
func TestAllocateRetriesAndDoesNotDeleteBundle(t *testing.T) {
	parent := t.TempDir()
	fixed := time.Unix(0, 9).UTC()
	previous := utcNow
	defer func() { utcNow = previous }()
	calls := 0
	utcNow = func() time.Time { calls++; return fixed.Add(time.Duration(calls-1) * time.Nanosecond) }
	if err := os.Mkdir(filepath.Join(parent, "run-9"), 0o700); err != nil {
		t.Fatal(err)
	}
	bundle, err := Allocate(parent)
	if err != nil {
		t.Fatal(err)
	}
	if bundle.RunID() != "run-10" {
		t.Fatalf("run id=%q", bundle.RunID())
	}
	if _, err := os.Stat(bundle.Path()); err != nil {
		t.Fatal(err)
	}
}

func TestAllocateReturnsErrorAfterRunIDCollisionsAreExhausted(t *testing.T) {
	parent := t.TempDir()
	fixed := time.Unix(0, 99).UTC()
	if err := os.Mkdir(filepath.Join(parent, "run-99"), 0o700); err != nil {
		t.Fatal(err)
	}
	previous := utcNow
	utcNow = func() time.Time { return fixed }
	defer func() { utcNow = previous }()

	if _, err := Allocate(parent); err == nil {
		t.Fatal("Allocate succeeded after exhausting run ID collisions")
	}
}

func TestSummaryWriterWritesEverySummaryArtifact(t *testing.T) {
	bundle, err := Allocate(t.TempDir())
	if err != nil {
		t.Fatal(err)
	}
	summary := bundle.Summary()
	if err := summary.WriteInvocation(Invocation{Operation: "run"}); err != nil {
		t.Fatal(err)
	}
	if err := summary.WriteRedactedEffectiveConfig(testRedactedSummaryPayload{}); err != nil {
		t.Fatal(err)
	}
	if err := summary.WriteResolvedPipeline(testRedactedResolvedPipelinePayload{}); err != nil {
		t.Fatal(err)
	}
	if err := summary.WriteResolvedReferences(nil); err != nil {
		t.Fatal(err)
	}
	if err := summary.WriteCheckpointEvents(nil); err != nil {
		t.Fatal(err)
	}
	if err := summary.WriteRunManifest(artifacts.RunManifest{RunID: bundle.RunID()}); err != nil {
		t.Fatal(err)
	}
	if err := summary.WriteChunkPlan(artifacts.ChunkPlanSummary{}); err != nil {
		t.Fatal(err)
	}
	if err := summary.WriteRunReport(RunReport{RunID: bundle.RunID(), PipelineID: "test"}); err != nil {
		t.Fatal(err)
	}
	if err := summary.WriteWarnings([]contracts.Warning{{ReasonCode: "test"}}); err != nil {
		t.Fatal(err)
	}
	if err := summary.WriteError("failed"); err != nil {
		t.Fatal(err)
	}

	for _, name := range []string{
		ArtifactInvocationMetadata,
		ArtifactEffectiveConfig,
		ArtifactResolvedPipeline,
		ArtifactResolvedReferences,
		ArtifactCheckpointEvents,
		ArtifactRunManifest,
		ArtifactChunkPlan,
		ArtifactRunReport,
		ArtifactWarnings,
		ArtifactErrorLog,
	} {
		info, err := os.Stat(filepath.Join(bundle.SummaryRoot(), name))
		if err != nil {
			t.Fatalf("summary artifact %q: %v", name, err)
		}
		if info.Mode().Perm() != 0o600 {
			t.Fatalf("summary artifact %q mode=%#o", name, info.Mode().Perm())
		}
	}
}
func TestSummaryWriterConfinesArtifacts(t *testing.T) {
	bundle, err := Allocate(t.TempDir())
	if err != nil {
		t.Fatal(err)
	}
	if err := bundle.Summary().WriteJSON("../outside.json", map[string]any{}); err == nil {
		t.Fatal("accepted traversal")
	}
	if err := bundle.Summary().WriteBytes(`trace\\x`, []byte("x")); err == nil {
		t.Fatal("accepted backslash")
	}
}

type testRedactedSummaryPayload struct{}

func (testRedactedSummaryPayload) RedactedSummaryPayload() any {
	return map[string]any{"redacted": true}
}

type testRedactedResolvedPipelinePayload struct{}

func (testRedactedResolvedPipelinePayload) RedactedResolvedPipelinePayload() pipeline.ResolvedPipeline {
	return pipeline.ResolvedPipeline{ID: "redacted"}
}