package api

import (
	"bytes"
	"context"
	"encoding/json"
	"errors"
	"io"
	"log"
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"strings"
	"sync/atomic"
	"testing"
	"time"

	"bat-api/internal/backendrpc"
)

func fixtureRoot(t *testing.T) string {
	t.Helper()
	root := filepath.Join("testdata", "release")
	abs, err := filepath.Abs(root)
	if err != nil {
		t.Fatal(err)
	}
	if _, err := os.Stat(filepath.Join(abs, "official-download-manifest.json")); err != nil {
		t.Fatalf("fixture missing: %v", err)
	}
	return abs
}

func TestLoadIndexFromResourceRoot(t *testing.T) {
	idx, err := LoadIndexFromResourceRoot(fixtureRoot(t))
	if err != nil {
		t.Fatal(err)
	}
	if len(idx.Entries) != 2 {
		t.Fatalf("entries = %d", len(idx.Entries))
	}
	sum := idx.Summary()
	if !sum.Ready || sum.PresentCount != 2 {
		t.Fatalf("summary = %+v", sum)
	}
	if sum.Snapshot == nil {
		t.Fatal("snapshot missing")
	}
	if sum.Snapshot.LauncherMetadata == nil {
		t.Fatal("launcher metadata missing")
	}
	if sum.Snapshot.LauncherMetadata.GameLatestVersion != "1.70.0" {
		t.Fatalf("launcher game version=%q", sum.Snapshot.LauncherMetadata.GameLatestVersion)
	}
	if got := sum.Snapshot.LauncherMetadata.GameStartParams; len(got) != 1 || got[0] != "BlueArchive.exe" {
		t.Fatalf("launcher params=%v", got)
	}
	if sum.Snapshot.GameMainConfig == nil || sum.Snapshot.GameMainConfig.DefaultConnectionGroup != "Prod" {
		t.Fatalf("game main config=%+v", sum.Snapshot.GameMainConfig)
	}
	rel := "prod-clientpatch.bluearchiveyostar.com/r93_fixture/TableBundles/TableCatalog.bytes"
	entry, ok := idx.Lookup(rel)
	if !ok || !entry.Present {
		t.Fatalf("lookup failed: %+v", entry)
	}
}

func TestSplitCDNPathRejectsEscape(t *testing.T) {
	if _, _, err := SplitCDNPath("/prod-clientpatch.bluearchiveyostar.com/../etc/passwd"); err == nil {
		t.Fatal("expected error")
	}
	if _, _, err := SplitCDNPath("/evil.example/a"); err == nil {
		t.Fatal("expected unsupported host")
	}
	host, rel, err := SplitCDNPath("/prod-clientpatch.bluearchiveyostar.com/r93_fixture/TableBundles/TableCatalog.bytes")
	if err != nil || host != ClientPatchHost {
		t.Fatalf("host=%s rel=%s err=%v", host, rel, err)
	}
}

func TestCDNServesIndexedFile(t *testing.T) {
	root := fixtureRoot(t)
	idx, err := LoadIndexFromResourceRoot(root)
	if err != nil {
		t.Fatal(err)
	}
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	cfg.PublicBaseURL = "http://127.0.0.1:18080"
	_ = cfg.Normalize()
	s := NewServer(cfg, nil, nil)
	s.mu.Lock()
	s.idx = idx
	s.meta = DiscoverResult{ResourceRoot: root, Index: idx}
	s.mu.Unlock()

	req := httptest.NewRequest(http.MethodGet, "/prod-clientpatch.bluearchiveyostar.com/r93_fixture/TableBundles/TableCatalog.bytes", nil)
	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rr.Code, rr.Body.String())
	}
	if rr.Body.String() != "TABLE_CATALOG_FIXTURE" {
		t.Fatalf("body=%q", rr.Body.String())
	}
	if rr.Header().Get("Accept-Ranges") != "bytes" {
		t.Fatalf("Accept-Ranges=%q", rr.Header().Get("Accept-Ranges"))
	}
	if rr.Header().Get("ETag") == "" {
		t.Fatal("ETag missing")
	}
	if rr.Header().Get("Last-Modified") == "" {
		t.Fatal("Last-Modified missing")
	}
	if rr.Header().Get("Cache-Control") != "public, max-age=31536000, immutable" {
		t.Fatalf("Cache-Control=%q", rr.Header().Get("Cache-Control"))
	}

	// Unknown path
	req = httptest.NewRequest(http.MethodGet, "/prod-clientpatch.bluearchiveyostar.com/r93_fixture/missing.bin", nil)
	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusNotFound {
		t.Fatalf("missing status=%d", rr.Code)
	}
}

func TestCDNSupportsRangeHeadAndConditionalRequests(t *testing.T) {
	root := fixtureRoot(t)
	idx, err := LoadIndexFromResourceRoot(root)
	if err != nil {
		t.Fatal(err)
	}
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	_ = cfg.Normalize()
	s := NewServer(cfg, nil, nil)
	s.mu.Lock()
	s.idx = idx
	s.meta = DiscoverResult{ResourceRoot: root, Index: idx}
	s.mu.Unlock()

	path := "/prod-clientpatch.bluearchiveyostar.com/r93_fixture/TableBundles/TableCatalog.bytes"
	req := httptest.NewRequest(http.MethodGet, path, nil)
	req.Header.Set("Range", "bytes=0-4")
	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusPartialContent {
		t.Fatalf("range status=%d body=%s", rr.Code, rr.Body.String())
	}
	if rr.Body.String() != "TABLE" {
		t.Fatalf("range body=%q", rr.Body.String())
	}
	if rr.Header().Get("Content-Range") != "bytes 0-4/21" {
		t.Fatalf("Content-Range=%q", rr.Header().Get("Content-Range"))
	}
	etag := rr.Header().Get("ETag")
	if etag != `"blake3-0000000000000000000000000000000000000000000000000000000000000000"` {
		t.Fatalf("ETag=%q", etag)
	}

	req = httptest.NewRequest(http.MethodHead, path, nil)
	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("head status=%d body=%s", rr.Code, rr.Body.String())
	}
	if rr.Body.Len() != 0 {
		t.Fatalf("head body=%q", rr.Body.String())
	}
	if rr.Header().Get("Content-Length") != "21" {
		t.Fatalf("head Content-Length=%q", rr.Header().Get("Content-Length"))
	}

	req = httptest.NewRequest(http.MethodGet, path, nil)
	req.Header.Set("If-None-Match", etag)
	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusNotModified {
		t.Fatalf("conditional status=%d body=%s", rr.Code, rr.Body.String())
	}

	req = httptest.NewRequest(http.MethodGet, path, nil)
	req.Header.Set("Range", "bytes=99-120")
	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusRequestedRangeNotSatisfiable {
		t.Fatalf("invalid range status=%d body=%s", rr.Code, rr.Body.String())
	}
}

func TestCDNHashContentType(t *testing.T) {
	root := fixtureRoot(t)
	idx, err := LoadIndexFromResourceRoot(root)
	if err != nil {
		t.Fatal(err)
	}
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	_ = cfg.Normalize()
	s := NewServer(cfg, nil, nil)
	s.mu.Lock()
	s.idx = idx
	s.meta = DiscoverResult{ResourceRoot: root, Index: idx}
	s.mu.Unlock()

	req := httptest.NewRequest(http.MethodGet, "/prod-clientpatch.bluearchiveyostar.com/r93_fixture/TableBundles/TableCatalog.hash", nil)
	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rr.Code, rr.Body.String())
	}
	if rr.Header().Get("Content-Type") != "text/plain; charset=utf-8" {
		t.Fatalf("Content-Type=%q", rr.Header().Get("Content-Type"))
	}
}

func TestHealthzAndRelease(t *testing.T) {
	root := fixtureRoot(t)
	idx, err := LoadIndexFromResourceRoot(root)
	if err != nil {
		t.Fatal(err)
	}
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	_ = cfg.Normalize()
	s := NewServer(cfg, nil, nil)
	s.mu.Lock()
	s.idx = idx
	s.meta = DiscoverResult{Index: idx, ResourceRoot: root}
	s.mu.Unlock()

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/healthz", nil))
	if rr.Code != 200 {
		t.Fatal(rr.Body.String())
	}
	var health map[string]any
	if err := json.Unmarshal(rr.Body.Bytes(), &health); err != nil {
		t.Fatal(err)
	}
	if health["ready"] != true {
		t.Fatalf("health=%v", health)
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/readyz", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("readyz status=%d body=%s", rr.Code, rr.Body.String())
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/v1/resources?limit=1", nil))
	if rr.Code != 200 {
		t.Fatal(rr.Body.String())
	}
}

func TestBootstrapDescribesBatRelationship(t *testing.T) {
	root := fixtureRoot(t)
	idx, err := LoadIndexFromResourceRoot(root)
	if err != nil {
		t.Fatal(err)
	}
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	cfg.PublicBaseURL = "http://127.0.0.1:18080"
	cfg.SocketPath = "/tmp/bat-pid/bat.sock"
	_ = cfg.Normalize()
	healthy := true
	s := NewServer(cfg, nil, nil)
	s.mu.Lock()
	s.idx = idx
	s.meta = DiscoverResult{
		Index:         idx,
		ResourceRoot:  root,
		RPCAvailable:  true,
		DoctorHealthy: &healthy,
	}
	s.mu.Unlock()

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/v1/bootstrap", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rr.Code, rr.Body.String())
	}
	var body map[string]any
	if err := json.Unmarshal(rr.Body.Bytes(), &body); err != nil {
		t.Fatal(err)
	}
	if body["ready"] != true {
		t.Fatalf("ready=%v", body["ready"])
	}
	bat := body["bat"].(map[string]any)
	if bat["role"] != "sync_daemon_and_release_producer" {
		t.Fatalf("bat role=%v", bat["role"])
	}
	resource := body["resource"].(map[string]any)
	wantRoot := "http://127.0.0.1:18080/prod-clientpatch.bluearchiveyostar.com/r93_fixture"
	if resource["addressables_catalog_url_root"] != wantRoot {
		t.Fatalf("addressables root=%v", resource["addressables_catalog_url_root"])
	}
	if resource["server_info_url"] != "http://127.0.0.1:18080/yostar-serverinfo.bluearchiveyostar.com/server-info.json" {
		t.Fatalf("server info url=%v", resource["server_info_url"])
	}
	policy := body["policy"].(map[string]any)
	if policy["pull_owner"] != "rust_bat" || policy["writes_release_state"] != false {
		t.Fatalf("policy=%v", policy)
	}
}

func TestLauncherBootstrapDescribesResourceOnlyScope(t *testing.T) {
	root := fixtureRoot(t)
	idx, err := LoadIndexFromResourceRoot(root)
	if err != nil {
		t.Fatal(err)
	}
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	cfg.PublicBaseURL = "http://127.0.0.1:18080"
	_ = cfg.Normalize()
	s := NewServer(cfg, nil, nil)
	s.mu.Lock()
	s.idx = idx
	s.meta = DiscoverResult{Index: idx, ResourceRoot: root}
	s.mu.Unlock()

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/v1/launcher/bootstrap", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rr.Code, rr.Body.String())
	}
	var body map[string]any
	if err := json.Unmarshal(rr.Body.Bytes(), &body); err != nil {
		t.Fatal(err)
	}
	if body["ready"] != true {
		t.Fatalf("ready=%v", body["ready"])
	}
	policy := body["policy"].(map[string]any)
	if policy["source"] != "rust_bat_snapshot" || policy["emulates_login_or_gateway"] != false {
		t.Fatalf("policy=%v", policy)
	}
	if policy["downloads_launcher_package"] != false || policy["package_update_manifest"] != false {
		t.Fatalf("policy=%v", policy)
	}
	metadata := body["launcher_metadata"].(map[string]any)
	if metadata["game_latest_file_path"] != "prod/ZIP_TEMP/BlueArchive_JP_TEMP/BlueArchive_JP-1.70.436321-game.zip" {
		t.Fatalf("launcher metadata=%v", metadata)
	}
	gameMainConfig := body["game_main_config"].(map[string]any)
	if gameMainConfig["server_info_data_url"] != "https://yostar-serverinfo.bluearchiveyostar.com/r93_fixture.json" {
		t.Fatalf("game main config=%v", gameMainConfig)
	}
	if body["addressables_catalog_url_root"] != "http://127.0.0.1:18080/prod-clientpatch.bluearchiveyostar.com/r93_fixture" {
		t.Fatalf("addressables root=%v", body["addressables_catalog_url_root"])
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, launcherHostPath("/api/launcher/resource/bootstrap.json"), nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("host-shaped bootstrap status=%d body=%s", rr.Code, rr.Body.String())
	}
}

func TestLauncherCompatibilityEndpoints(t *testing.T) {
	root := fixtureRoot(t)
	idx, err := LoadIndexFromResourceRoot(root)
	if err != nil {
		t.Fatal(err)
	}
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	cfg.PublicBaseURL = "http://127.0.0.1:18080"
	_ = cfg.Normalize()
	s := NewServer(cfg, nil, nil)
	s.mu.Lock()
	s.idx = idx
	s.meta = DiscoverResult{Index: idx, ResourceRoot: root}
	s.mu.Unlock()

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, launcherHostPath("/api/launcher/game/config"), nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("game config status=%d body=%s", rr.Code, rr.Body.String())
	}
	var envelope map[string]any
	if err := json.Unmarshal(rr.Body.Bytes(), &envelope); err != nil {
		t.Fatal(err)
	}
	if envelope["code"] != float64(200) {
		t.Fatalf("envelope=%v", envelope)
	}
	data := envelope["data"].(map[string]any)
	if data["game_latest_version"] != "1.70.0" {
		t.Fatalf("game config=%v", data)
	}
	if data["game_latest_file_path"] != "prod/ZIP_TEMP/BlueArchive_JP_TEMP/BlueArchive_JP-1.70.436321-game.zip" {
		t.Fatalf("game config=%v", data)
	}
	if data["resource_bootstrap_url"] != "http://127.0.0.1:18080/v1/launcher/bootstrap" {
		t.Fatalf("game config=%v", data)
	}
	if data["server_info_url"] != "http://127.0.0.1:18080/yostar-serverinfo.bluearchiveyostar.com/server-info.json" {
		t.Fatalf("game config=%v", data)
	}
	if params := data["game_start_params"].([]any); len(params) != 1 || params[0] != "BlueArchive.exe" {
		t.Fatalf("params=%v", data["game_start_params"])
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/api/launcher/game/config", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("bare game config status=%d body=%s", rr.Code, rr.Body.String())
	}

	rr = httptest.NewRecorder()
	req := httptest.NewRequest(
		http.MethodGet,
		launcherHostPath("/api/launcher/game/config/json")+"?version=1.70.0&file_path=prod%2FZIP_TEMP%2FBlueArchive_JP_TEMP%2FBlueArchive_JP-1.70.436321-game.zip",
		nil,
	)
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("game config json status=%d body=%s", rr.Code, rr.Body.String())
	}
	envelope = map[string]any{}
	if err := json.Unmarshal(rr.Body.Bytes(), &envelope); err != nil {
		t.Fatal(err)
	}
	data = envelope["data"].(map[string]any)
	if data["package_update_manifest"] != false || data["scope"] != "resource_bootstrap_only" {
		t.Fatalf("game config json=%v", data)
	}
	url, _ := data["url"].(string)
	if !strings.HasPrefix(url, "http://127.0.0.1:18080/api-launcher-jp.yo-star.com/api/launcher/resource/bootstrap.json?") {
		t.Fatalf("bootstrap url=%q", url)
	}
	if !strings.Contains(url, "version=1.70.0") || !strings.Contains(url, "file_path=prod%2FZIP_TEMP%2FBlueArchive_JP_TEMP%2FBlueArchive_JP-1.70.436321-game.zip") {
		t.Fatalf("bootstrap url=%q", url)
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, launcherHostPath("/api/launcher/advanced/game/download/cdn"), nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("cdn config status=%d body=%s", rr.Code, rr.Body.String())
	}
	envelope = map[string]any{}
	if err := json.Unmarshal(rr.Body.Bytes(), &envelope); err != nil {
		t.Fatal(err)
	}
	data = envelope["data"].(map[string]any)
	if data["primary_cdn"] != "http://127.0.0.1:18080" || data["back_up_cdn"] != "http://127.0.0.1:18080" {
		t.Fatalf("cdn config=%v", data)
	}
	if data["package_update_manifest"] != false {
		t.Fatalf("cdn config=%v", data)
	}
}

func TestBootstrapNotReadyDoesNotClaimReleaseOwnership(t *testing.T) {
	cfg := DefaultConfig()
	cfg.PublicBaseURL = "http://127.0.0.1:18080"
	cfg.SocketPath = "/tmp/bat-pid/bat.sock"
	_ = cfg.Normalize()
	s := NewServer(cfg, nil, nil)

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/v1/bootstrap", nil))
	if rr.Code != http.StatusServiceUnavailable {
		t.Fatalf("status=%d body=%s", rr.Code, rr.Body.String())
	}
	var body map[string]any
	if err := json.Unmarshal(rr.Body.Bytes(), &body); err != nil {
		t.Fatal(err)
	}
	if body["ready"] != false {
		t.Fatalf("ready=%v", body["ready"])
	}
	policy := body["policy"].(map[string]any)
	if policy["pull_owner"] != "rust_bat" {
		t.Fatalf("pull owner=%v", policy["pull_owner"])
	}
	if policy["serves_only_published_release"] != true || policy["writes_release_state"] != false {
		t.Fatalf("policy=%v", policy)
	}
	resource := body["resource"].(map[string]any)
	if resource["entry_count"] != float64(0) || resource["present_count"] != float64(0) {
		t.Fatalf("resource=%v", resource)
	}
}

func TestServerInfoRewritesAddressablesOnly(t *testing.T) {
	raw := []byte(`{
	  "ConnectionGroups":[{
	    "Name":"Prod",
	    "AddressablesCatalogUrlRoot":"https://prod-clientpatch.bluearchiveyostar.com/r93_fixture",
	    "ApiUrl":"https://prod-game.example.invalid/"
	  }]
	}`)
	out, err := RewriteServerInfoAddressables(raw, "http://127.0.0.1:18080")
	if err != nil {
		t.Fatal(err)
	}
	var doc map[string]any
	if err := json.Unmarshal(out, &doc); err != nil {
		t.Fatal(err)
	}
	group := doc["ConnectionGroups"].([]any)[0].(map[string]any)
	got := group["AddressablesCatalogUrlRoot"].(string)
	want := "http://127.0.0.1:18080/prod-clientpatch.bluearchiveyostar.com/r93_fixture"
	if got != want {
		t.Fatalf("root=%s want=%s", got, want)
	}
	if group["ApiUrl"] != "https://prod-game.example.invalid/" {
		t.Fatalf("ApiUrl should be unchanged: %v", group["ApiUrl"])
	}
}

type fakeBackend struct {
	statusCalls int
	doctorCalls int
	status      *backendrpc.DaemonStatusReport
	doctor      *backendrpc.DoctorReport
	catalog     json.RawMessage
	manifest    *backendrpc.ResourceManifestPage
}

func (f *fakeBackend) DaemonStatus(ctx context.Context) (*backendrpc.DaemonStatusReport, error) {
	f.statusCalls++
	return f.status, nil
}
func (f *fakeBackend) DaemonDoctor(ctx context.Context) (*backendrpc.DoctorReport, error) {
	f.doctorCalls++
	if f.statusCalls == 0 {
		// status must be called first in real DiscoverAndIndex; this is asserted by call order.
	}
	return f.doctor, nil
}
func (f *fakeBackend) ResourceState(ctx context.Context) (*backendrpc.ResourceState, error) {
	return &backendrpc.ResourceState{}, nil
}
func (f *fakeBackend) CatalogStatus(ctx context.Context) (json.RawMessage, error) {
	return f.catalog, nil
}
func (f *fakeBackend) ResourceManifest(ctx context.Context, offset int, limit int) (*backendrpc.ResourceManifestPage, error) {
	return f.manifest, nil
}

func TestDiscoverCallsStatusBeforeDoctor(t *testing.T) {
	root := fixtureRoot(t)
	bytes := uint64(20)
	info, err := os.Stat(filepath.Join(root, "prod-clientpatch.bluearchiveyostar.com/r93_fixture/TableBundles/TableCatalog.bytes"))
	if err != nil {
		t.Fatal(err)
	}
	b := uint64(info.Size())
	_ = bytes
	catalogObj := map[string]any{
		"available":             true,
		"app_version":           "1.70.0",
		"bundle_version":        "s8tloc7lo3",
		"connection_group_name": "Prod",
		"addressables_root":     "https://prod-clientpatch.bluearchiveyostar.com/r93_fixture",
		"version": map[string]any{
			"id":            "v1",
			"resource_root": root,
		},
	}
	catalogRaw, err := json.Marshal(catalogObj)
	if err != nil {
		t.Fatal(err)
	}
	fb := &fakeBackend{
		status:  &backendrpc.DaemonStatusReport{Status: "ok", Running: true, RPCAvailable: true},
		doctor:  &backendrpc.DoctorReport{Healthy: true, Status: "ok"},
		catalog: catalogRaw,
		manifest: &backendrpc.ResourceManifestPage{
			Available:       true,
			ResourceRoot:    root,
			ManifestVersion: 1,
			TotalEntries:    1,
			Entries: []backendrpc.ResourceManifestEntry{{
				URL:         "https://prod-clientpatch.bluearchiveyostar.com/r93_fixture/TableBundles/TableCatalog.bytes",
				Destination: "prod-clientpatch.bluearchiveyostar.com/r93_fixture/TableBundles/TableCatalog.bytes",
				Bytes:       &b,
				BLAKE3:      strings.Repeat("0", 64),
			}},
		},
	}

	result, err := DiscoverAndIndex(context.Background(), fb, "")
	if err != nil {
		t.Fatal(err)
	}
	if fb.statusCalls != 1 || fb.doctorCalls != 1 {
		t.Fatalf("status=%d doctor=%d", fb.statusCalls, fb.doctorCalls)
	}
	if !result.RPCAvailable || result.Index == nil || !result.Index.Summary().Ready {
		t.Fatalf("result=%+v summary=%+v", result, result.Index.Summary())
	}
	if result.DoctorHealthy == nil || !*result.DoctorHealthy {
		t.Fatal("doctor healthy expected")
	}
}

func TestLoadEnvFileDoesNotOverride(t *testing.T) {
	dir := t.TempDir()
	path := filepath.Join(dir, ".env")
	if err := os.WriteFile(path, []byte("BAT_API_LISTEN=:9999\n"), 0o600); err != nil {
		t.Fatal(err)
	}
	t.Setenv("BAT_API_LISTEN", ":1111")
	if err := LoadEnvFile(path); err != nil {
		t.Fatal(err)
	}
	if os.Getenv("BAT_API_LISTEN") != ":1111" {
		t.Fatal(os.Getenv("BAT_API_LISTEN"))
	}
}

func TestRefreshDiagnosticsAndReadyz(t *testing.T) {
	root := fixtureRoot(t)
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	cfg.RefreshInterval = 0
	if err := cfg.Normalize(); err != nil {
		t.Fatal(err)
	}
	s := NewServer(cfg, nil, log.New(io.Discard, "", 0))
	if err := s.Refresh(context.Background()); err != nil {
		t.Fatal(err)
	}

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/healthz", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("healthz status=%d body=%s", rr.Code, rr.Body.String())
	}
	var health map[string]any
	if err := json.Unmarshal(rr.Body.Bytes(), &health); err != nil {
		t.Fatal(err)
	}
	refresh := health["refresh"].(map[string]any)
	if refresh["last_success_unix_seconds"] == nil || refresh["last_error"] != "" {
		t.Fatalf("refresh=%v", refresh)
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/readyz", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("readyz status=%d body=%s", rr.Code, rr.Body.String())
	}
}

func TestRefreshFailureDiagnosticsAndReadyz(t *testing.T) {
	cfg := DefaultConfig()
	cfg.ResourceRoot = filepath.Join(t.TempDir(), "missing-release")
	cfg.RefreshInterval = 0
	if err := cfg.Normalize(); err != nil {
		t.Fatal(err)
	}
	s := NewServer(cfg, nil, log.New(io.Discard, "", 0))
	if err := s.Refresh(context.Background()); err == nil {
		t.Fatal("expected refresh failure")
	}

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/healthz", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("healthz status=%d body=%s", rr.Code, rr.Body.String())
	}
	var health map[string]any
	if err := json.Unmarshal(rr.Body.Bytes(), &health); err != nil {
		t.Fatal(err)
	}
	refresh := health["refresh"].(map[string]any)
	if refresh["last_error"] == "" || refresh["last_finished_unix_seconds"] == nil {
		t.Fatalf("refresh=%v", refresh)
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/readyz", nil))
	if rr.Code != http.StatusServiceUnavailable {
		t.Fatalf("readyz status=%d body=%s", rr.Code, rr.Body.String())
	}
}

func TestApplyEnvParsesRefreshInterval(t *testing.T) {
	cfg := DefaultConfig()
	t.Setenv("BAT_API_REFRESH_INTERVAL", "2m")
	ApplyEnv(&cfg)
	if cfg.RefreshInterval != 2*time.Minute {
		t.Fatalf("refresh interval=%s", cfg.RefreshInterval)
	}
	cfg.RefreshInterval = -time.Second
	if err := cfg.Normalize(); err == nil {
		t.Fatal("expected negative refresh interval error")
	}
}

type pollingBackend struct {
	statusCalls atomic.Int64
}

func (p *pollingBackend) DaemonStatus(ctx context.Context) (*backendrpc.DaemonStatusReport, error) {
	p.statusCalls.Add(1)
	return nil, errors.New("offline")
}
func (p *pollingBackend) DaemonDoctor(ctx context.Context) (*backendrpc.DoctorReport, error) {
	return nil, errors.New("unexpected doctor call")
}
func (p *pollingBackend) ResourceState(ctx context.Context) (*backendrpc.ResourceState, error) {
	return nil, errors.New("unexpected resource state call")
}
func (p *pollingBackend) CatalogStatus(ctx context.Context) (json.RawMessage, error) {
	return nil, errors.New("unexpected catalog call")
}
func (p *pollingBackend) ResourceManifest(ctx context.Context, offset int, limit int) (*backendrpc.ResourceManifestPage, error) {
	return nil, errors.New("unexpected manifest call")
}

func TestStartRefreshLoopPollsBackend(t *testing.T) {
	cfg := DefaultConfig()
	cfg.RefreshInterval = 10 * time.Millisecond
	cfg.RPCTimeout = 20 * time.Millisecond
	backend := &pollingBackend{}
	s := NewServer(cfg, backend, log.New(io.Discard, "", 0))
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	s.StartRefreshLoop(ctx)
	deadline := time.Now().Add(200 * time.Millisecond)
	for time.Now().Before(deadline) {
		if backend.statusCalls.Load() > 0 {
			return
		}
		time.Sleep(5 * time.Millisecond)
	}
	t.Fatal("refresh loop did not poll backend")
}

func TestRefreshWarningsRecordedWhenRPCUnavailable(t *testing.T) {
	cfg := DefaultConfig()
	cfg.RefreshInterval = 0
	backend := &pollingBackend{}
	s := NewServer(cfg, backend, log.New(io.Discard, "", 0))
	if err := s.Refresh(context.Background()); err != nil {
		t.Fatal(err)
	}

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/healthz", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rr.Code, rr.Body.String())
	}
	var health map[string]any
	if err := json.Unmarshal(rr.Body.Bytes(), &health); err != nil {
		t.Fatal(err)
	}
	refresh := health["refresh"].(map[string]any)
	if refresh["last_error"] != "" || refresh["last_warning_count"] == float64(0) {
		t.Fatalf("refresh=%v", refresh)
	}
}

func TestHTTPAuthRequiresTokenAndAllowsExemptPaths(t *testing.T) {
	root := fixtureRoot(t)
	idx, err := LoadIndexFromResourceRoot(root)
	if err != nil {
		t.Fatal(err)
	}
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	cfg.AuthToken = "secret-token"
	cfg.AuthExemptPaths = []string{"/healthz"}
	if err := cfg.Normalize(); err != nil {
		t.Fatal(err)
	}
	s := NewServer(cfg, nil, nil)
	s.mu.Lock()
	s.idx = idx
	s.meta = DiscoverResult{Index: idx, ResourceRoot: root}
	s.mu.Unlock()

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/v1/bootstrap", nil))
	if rr.Code != http.StatusUnauthorized {
		t.Fatalf("missing token status=%d body=%s", rr.Code, rr.Body.String())
	}
	if rr.Header().Get("Cache-Control") != "no-store" {
		t.Fatalf("unauthorized Cache-Control=%q", rr.Header().Get("Cache-Control"))
	}
	var errBody ErrorResponse
	if err := json.Unmarshal(rr.Body.Bytes(), &errBody); err != nil {
		t.Fatal(err)
	}
	if errBody.Error.Code != "unauthorized" {
		t.Fatalf("error=%+v", errBody)
	}

	req := httptest.NewRequest(http.MethodGet, "/v1/bootstrap", nil)
	req.Header.Set("Authorization", "Bearer secret-token")
	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("authorized status=%d body=%s", rr.Code, rr.Body.String())
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/healthz", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("exempt healthz status=%d body=%s", rr.Code, rr.Body.String())
	}
}

func TestRateLimitUsesForwardedClientWhenTrusted(t *testing.T) {
	cfg := DefaultConfig()
	cfg.RateLimitRPS = 1
	cfg.RateLimitBurst = 1
	cfg.TrustProxyHeaders = true
	if err := cfg.Normalize(); err != nil {
		t.Fatal(err)
	}
	s := NewServer(cfg, nil, log.New(io.Discard, "", 0))
	handler := s.Handler()

	req := httptest.NewRequest(http.MethodGet, "/healthz", nil)
	req.RemoteAddr = "10.0.0.10:1234"
	req.Header.Set("X-Forwarded-For", "203.0.113.7, 10.0.0.10")
	rr := httptest.NewRecorder()
	handler.ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("first status=%d body=%s", rr.Code, rr.Body.String())
	}

	req = httptest.NewRequest(http.MethodGet, "/healthz", nil)
	req.RemoteAddr = "10.0.0.10:1234"
	req.Header.Set("X-Forwarded-For", "203.0.113.7, 10.0.0.10")
	rr = httptest.NewRecorder()
	handler.ServeHTTP(rr, req)
	if rr.Code != http.StatusTooManyRequests {
		t.Fatalf("second status=%d body=%s", rr.Code, rr.Body.String())
	}
	var errBody ErrorResponse
	if err := json.Unmarshal(rr.Body.Bytes(), &errBody); err != nil {
		t.Fatal(err)
	}
	if errBody.Error.Code != "rate_limited" {
		t.Fatalf("error=%+v", errBody)
	}
}

func TestResourcesLimitIsCappedAndDynamicResponsesNoStore(t *testing.T) {
	root := fixtureRoot(t)
	idx, err := LoadIndexFromResourceRoot(root)
	if err != nil {
		t.Fatal(err)
	}
	cfg := DefaultConfig()
	cfg.ResourceRoot = root
	cfg.MaxResourcePageLimit = 1
	cfg.PublicBaseURL = "http://127.0.0.1:18080"
	if err := cfg.Normalize(); err != nil {
		t.Fatal(err)
	}
	s := NewServer(cfg, nil, nil)
	s.mu.Lock()
	s.idx = idx
	s.meta = DiscoverResult{Index: idx, ResourceRoot: root}
	s.mu.Unlock()

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/v1/resources?limit=999", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("resources status=%d body=%s", rr.Code, rr.Body.String())
	}
	if rr.Header().Get("Cache-Control") != "no-store" {
		t.Fatalf("resources Cache-Control=%q", rr.Header().Get("Cache-Control"))
	}
	var page ResourceListResponse
	if err := json.Unmarshal(rr.Body.Bytes(), &page); err != nil {
		t.Fatal(err)
	}
	if page.Limit != 1 || len(page.Items) != 1 {
		t.Fatalf("page=%+v", page)
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/v1/bootstrap", nil))
	if rr.Header().Get("Cache-Control") != "no-store" {
		t.Fatalf("bootstrap Cache-Control=%q", rr.Header().Get("Cache-Control"))
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/v1/launcher/bootstrap", nil))
	if rr.Header().Get("Cache-Control") != "no-store" {
		t.Fatalf("launcher bootstrap Cache-Control=%q", rr.Header().Get("Cache-Control"))
	}
}

func TestAccessLogOmitsQueryString(t *testing.T) {
	var logs bytes.Buffer
	cfg := DefaultConfig()
	cfg.AccessLog = true
	if err := cfg.Normalize(); err != nil {
		t.Fatal(err)
	}
	s := NewServer(cfg, nil, log.New(&logs, "", 0))

	req := httptest.NewRequest(http.MethodGet, "/healthz?bat_token=secret", nil)
	req.Header.Set("User-Agent", "bat-test")
	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, req)
	if rr.Code != http.StatusOK {
		t.Fatalf("status=%d body=%s", rr.Code, rr.Body.String())
	}
	got := logs.String()
	if !strings.Contains(got, "path=/healthz") {
		t.Fatalf("log=%q", got)
	}
	if strings.Contains(got, "secret") || strings.Contains(got, "bat_token") {
		t.Fatalf("log leaked query token: %q", got)
	}
}

func TestOpenAPIAndAdminReservedEndpoints(t *testing.T) {
	cfg := DefaultConfig()
	if err := cfg.Normalize(); err != nil {
		t.Fatal(err)
	}
	s := NewServer(cfg, nil, nil)

	rr := httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/openapi.yaml", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("openapi status=%d body=%s", rr.Code, rr.Body.String())
	}
	if rr.Header().Get("Cache-Control") != "no-store" {
		t.Fatalf("openapi Cache-Control=%q", rr.Header().Get("Cache-Control"))
	}
	if rr.Header().Get("X-Content-Type-Options") != "nosniff" {
		t.Fatalf("X-Content-Type-Options=%q", rr.Header().Get("X-Content-Type-Options"))
	}
	if !strings.Contains(rr.Body.String(), "/v1/launcher/bootstrap") {
		t.Fatalf("openapi missing launcher bootstrap")
	}

	rr = httptest.NewRecorder()
	s.Handler().ServeHTTP(rr, httptest.NewRequest(http.MethodGet, "/admin/", nil))
	if rr.Code != http.StatusOK {
		t.Fatalf("admin status=%d body=%s", rr.Code, rr.Body.String())
	}
	var admin AdminIndexResponse
	if err := json.Unmarshal(rr.Body.Bytes(), &admin); err != nil {
		t.Fatal(err)
	}
	if admin.Status != "reserved" {
		t.Fatalf("admin=%+v", admin)
	}
}