package claude

import (
	"strings"
	"testing"
)

// TestDefaultBundleVersions verifies the active Claude Code bundle snapshot
// matches the reverse-engineered 2.1.145 binary. Bump this when DefaultBundle
// is upgraded to a newer CLI release.
func TestDefaultBundleVersions(t *testing.T) {
	if got := DefaultBundle.CLIVersion; got != "2.1.145" {
		t.Fatalf("DefaultBundle.CLIVersion = %q, want %q", got, "2.1.145")
	}
	if got := DefaultBundle.SDKVersion; got != "0.94.0" {
		t.Fatalf("DefaultBundle.SDKVersion = %q, want %q", got, "0.94.0")
	}
}

// TestDefaultBundleDrivesLegacyExports ensures all legacy exported vars stay
// in sync with DefaultBundle (single source of truth).
func TestDefaultBundleDrivesLegacyExports(t *testing.T) {
	if DefaultCLIVersion != DefaultBundle.CLIVersion {
		t.Fatalf("DefaultCLIVersion = %q, want %q (from DefaultBundle)", DefaultCLIVersion, DefaultBundle.CLIVersion)
	}
	if DefaultStainlessPackageVersion != DefaultBundle.SDKVersion {
		t.Fatalf("DefaultStainlessPackageVersion = %q, want %q (from DefaultBundle)", DefaultStainlessPackageVersion, DefaultBundle.SDKVersion)
	}
	if DefaultStainlessRuntimeVersion != DefaultBundle.RuntimeVersion {
		t.Fatalf("DefaultStainlessRuntimeVersion = %q, want %q (from DefaultBundle)", DefaultStainlessRuntimeVersion, DefaultBundle.RuntimeVersion)
	}
	if DefaultStainlessOS != DefaultBundle.DefaultOS {
		t.Fatalf("DefaultStainlessOS = %q, want %q (from DefaultBundle)", DefaultStainlessOS, DefaultBundle.DefaultOS)
	}
	if DefaultStainlessArch != DefaultBundle.DefaultArch {
		t.Fatalf("DefaultStainlessArch = %q, want %q (from DefaultBundle)", DefaultStainlessArch, DefaultBundle.DefaultArch)
	}
	if CLICurrentVersion != DefaultBundle.CLIVersion {
		t.Fatalf("CLICurrentVersion = %q, want %q (from DefaultBundle)", CLICurrentVersion, DefaultBundle.CLIVersion)
	}
}

// TestDefaultHeadersDrivenByBundle ensures DefaultHeaders map carries the
// values from DefaultBundle, not stale hard-coded literals.
func TestDefaultHeadersDrivenByBundle(t *testing.T) {
	if got := DefaultHeaders["X-Stainless-Package-Version"]; got != DefaultBundle.SDKVersion {
		t.Fatalf("DefaultHeaders[X-Stainless-Package-Version] = %q, want %q", got, DefaultBundle.SDKVersion)
	}
	if got := DefaultHeaders["X-Stainless-Runtime-Version"]; got != DefaultBundle.RuntimeVersion {
		t.Fatalf("DefaultHeaders[X-Stainless-Runtime-Version] = %q, want %q", got, DefaultBundle.RuntimeVersion)
	}
	if got := DefaultHeaders["X-Stainless-OS"]; got != DefaultBundle.DefaultOS {
		t.Fatalf("DefaultHeaders[X-Stainless-OS] = %q, want %q", got, DefaultBundle.DefaultOS)
	}
	if got := DefaultHeaders["X-Stainless-Arch"]; got != DefaultBundle.DefaultArch {
		t.Fatalf("DefaultHeaders[X-Stainless-Arch] = %q, want %q", got, DefaultBundle.DefaultArch)
	}
	ua := DefaultHeaders["User-Agent"]
	if !strings.Contains(ua, "claude-cli/"+DefaultBundle.CLIVersion) {
		t.Fatalf("DefaultHeaders[User-Agent] = %q, want substring %q", ua, "claude-cli/"+DefaultBundle.CLIVersion)
	}
}

func TestApplyFingerprintOverridesUpdatesSharedDefaults(t *testing.T) {
	t.Setenv("CLAUDE_CODE_ENTRYPOINT", "")
	t.Setenv("CLAUDE_AGENT_SDK_VERSION", "")
	t.Setenv("CLAUDE_AGENT_SDK_CLIENT_APP", "")
	t.Setenv("CLAUDE_CODE_WORKLOAD", "")

	originalVersion := DefaultCLIVersion
	originalPackageVersion := DefaultStainlessPackageVersion
	originalRuntimeVersion := DefaultStainlessRuntimeVersion
	originalOS := DefaultStainlessOS
	originalArch := DefaultStainlessArch

	t.Cleanup(func() {
		ApplyFingerprintOverrides(
			originalVersion,
			originalPackageVersion,
			originalRuntimeVersion,
			originalOS,
			originalArch,
		)
	})

	ApplyFingerprintOverrides("2.1.999", "0.99.0", "v99.0.0", "Linux", "x64")

	if got := DefaultCLIVersion; got != "2.1.999" {
		t.Fatalf("DefaultCLIVersion = %q, want %q", got, "2.1.999")
	}
	if got := DefaultUserAgent(); got != "claude-cli/2.1.999 (external, cli)" {
		t.Fatalf("DefaultUserAgent() = %q", got)
	}

	profile := DefaultDeviceProfile()
	if profile.StainlessPackageVersion != "0.99.0" {
		t.Fatalf("DefaultDeviceProfile().StainlessPackageVersion = %q", profile.StainlessPackageVersion)
	}
	if profile.StainlessRuntimeVersion != "v99.0.0" {
		t.Fatalf("DefaultDeviceProfile().StainlessRuntimeVersion = %q", profile.StainlessRuntimeVersion)
	}
	if profile.StainlessOS != "Linux" {
		t.Fatalf("DefaultDeviceProfile().StainlessOS = %q", profile.StainlessOS)
	}
	if profile.StainlessArch != "x64" {
		t.Fatalf("DefaultDeviceProfile().StainlessArch = %q", profile.StainlessArch)
	}

	if got := DefaultHeaders["User-Agent"]; got != profile.UserAgent {
		t.Fatalf("DefaultHeaders[User-Agent] = %q, want %q", got, profile.UserAgent)
	}
	if got := DefaultHeaders["X-Stainless-Package-Version"]; got != profile.StainlessPackageVersion {
		t.Fatalf("DefaultHeaders[X-Stainless-Package-Version] = %q, want %q", got, profile.StainlessPackageVersion)
	}
	if got := DefaultHeaders["X-Stainless-Runtime-Version"]; got != profile.StainlessRuntimeVersion {
		t.Fatalf("DefaultHeaders[X-Stainless-Runtime-Version] = %q, want %q", got, profile.StainlessRuntimeVersion)
	}
	if got := DefaultHeaders["X-Stainless-OS"]; got != profile.StainlessOS {
		t.Fatalf("DefaultHeaders[X-Stainless-OS] = %q, want %q", got, profile.StainlessOS)
	}
	if got := DefaultHeaders["X-Stainless-Arch"]; got != profile.StainlessArch {
		t.Fatalf("DefaultHeaders[X-Stainless-Arch] = %q, want %q", got, profile.StainlessArch)
	}
	if got := DefaultHeaders["anthropic-dangerous-direct-browser-access"]; got != "true" {
		t.Fatalf("DefaultHeaders[anthropic-dangerous-direct-browser-access] = %q, want %q", got, "true")
	}
}

func TestDefaultUserAgentReflectsLocalRuntimeDescriptors(t *testing.T) {
	t.Setenv("CLAUDE_CODE_ENTRYPOINT", "sdk-cli")
	t.Setenv("CLAUDE_AGENT_SDK_VERSION", "0.0.77")
	t.Setenv("CLAUDE_AGENT_SDK_CLIENT_APP", "cron-daemon")
	t.Setenv("CLAUDE_CODE_WORKLOAD", "cron")

	got := DefaultUserAgent()
	want := "claude-cli/2.1.145 (external, sdk-cli, agent-sdk/0.0.77, client-app/cron-daemon, workload/cron)"
	if got != want {
		t.Fatalf("DefaultUserAgent() = %q, want %q", got, want)
	}
}

func TestDetailedCodeUserAgentReflectsEntrypointAndSDK(t *testing.T) {
	t.Setenv("CLAUDE_CODE_ENTRYPOINT", "remote")
	t.Setenv("CLAUDE_AGENT_SDK_VERSION", "0.0.77")
	t.Setenv("CLAUDE_AGENT_SDK_CLIENT_APP", "desktop")

	got := DetailedCodeUserAgent()
	want := "claude-code/2.1.145 (remote, agent-sdk/0.0.77, client-app/desktop)"
	if got != want {
		t.Fatalf("DetailedCodeUserAgent() = %q, want %q", got, want)
	}
}

func TestOptionalAPIHeaders(t *testing.T) {
	t.Setenv("CLAUDE_CODE_CONTAINER_ID", "ctr-123")
	t.Setenv("CLAUDE_CODE_REMOTE_SESSION_ID", "remote-456")
	t.Setenv("CLAUDE_AGENT_SDK_CLIENT_APP", "desktop")
	t.Setenv("CLAUDE_CODE_ADDITIONAL_PROTECTION", "true")

	headers := OptionalAPIHeaders()
	if got := headers["x-claude-remote-container-id"]; got != "ctr-123" {
		t.Fatalf("x-claude-remote-container-id = %q", got)
	}
	if got := headers["x-claude-remote-session-id"]; got != "remote-456" {
		t.Fatalf("x-claude-remote-session-id = %q", got)
	}
	if got := headers["x-client-app"]; got != "desktop" {
		t.Fatalf("x-client-app = %q", got)
	}
	if got := headers["x-anthropic-additional-protection"]; got != "true" {
		t.Fatalf("x-anthropic-additional-protection = %q", got)
	}
}

func TestAttributionHeaderDisabled(t *testing.T) {
	t.Setenv("CLAUDE_CODE_ATTRIBUTION_HEADER", "false")
	if !AttributionHeaderDisabled() {
		t.Fatal("expected AttributionHeaderDisabled() to be true when env=false")
	}
}