/**
 * index.test.ts — Tests for the File Claiming extension LLM integration.
 *
 * Tests cover:
 * - System prompt injection
 * - Diagnostic message formatting and delivery
 * - Tool registration
 * - Notification system for various lock events
 * - User interaction components
 */

// ---------------------------------------------------------------------------
// Test utilities
// ---------------------------------------------------------------------------

import {
	createDefaultConfig,
	setConfig,
	resetConfig,
	getConfig,
} from "../src/config";
import { getClaimRegistry, resetRegistry } from "../index";
import type { ClaimOwner, FileClaim, PathLockType } from "../src/lock-types";

function mockOwner(type: ClaimOwner["type"], id: string): ClaimOwner {
	return { type, id, sessionId: "test-session" };
}

// ---------------------------------------------------------------------------
// System prompt injection tests
// ---------------------------------------------------------------------------

function testSystemPromptInjection() {
	const {
		injectLockClaimingIntoPrompt,
		buildLockClaimingInstructions,
		buildLockClaimingGuidelines,
		buildLockClaimingToolSnippets,
	} = require("../src/system-prompt");

	// Test 1: Instructions are injected
	const instructions = buildLockClaimingInstructions();
	assert(
		instructions.includes("<file_claiming>"),
		"Instructions include file_claiming tags",
	);
	assert(
		instructions.includes("Lock Claiming Protocol"),
		"Instructions include header",
	);
	assert(
		instructions.includes("Claim Types"),
		"Instructions include claim types",
	);
	assert(
		instructions.includes("Auto-Release Behavior"),
		"Instructions include auto-release section",
	);
	assert(
		instructions.includes("Conflict Resolution"),
		"Instructions include conflict resolution",
	);
	assert(
		instructions.includes("Best Practices"),
		"Instructions include best practices",
	);
	assert(
		instructions.includes("Releasing Claims"),
		"Instructions include releasing claims",
	);
	console.log("✅ System prompt injection: instructions generated correctly");

	// Test 2: Guidelines are generated
	const guidelines = buildLockClaimingGuidelines();
	assert(Array.isArray(guidelines), "Guidelines is an array");
	assert(guidelines.length > 0, "Guidelines has entries");
	assert(
		guidelines.some((g: string) => g.includes("file_claiming_claim")),
		"Guidelines mentions claim tool",
	);
	assert(
		guidelines.some((g: string) => g.includes("file_claiming_release")),
		"Guidelines mentions release tool",
	);
	assert(
		guidelines.some((g: string) => g.includes("file_claiming_list")),
		"Guidelines mentions list tool",
	);
	assert(
		guidelines.some((g: string) => g.includes("file_claiming_check")),
		"Guidelines mentions check tool",
	);
	console.log("✅ System prompt injection: guidelines generated correctly");

	// Test 3: Tool snippets are generated
	const snippets = buildLockClaimingToolSnippets();
	assert(snippets.file_claiming_claim, "Snippet for claim tool");
	assert(snippets.file_claiming_release, "Snippet for release tool");
	assert(snippets.file_claiming_list, "Snippet for list tool");
	assert(snippets.file_claiming_check, "Snippet for check tool");
	console.log("✅ System prompt injection: tool snippets generated correctly");

	// Test 4: Injection into prompt options
	const options = injectLockClaimingIntoPrompt({ cwd: "." });
	assert(options.promptGuidelines, "Injected options have guidelines");
	assert(options.toolSnippets, "Injected options have tool snippets");
	assert(
		options.appendSystemPrompt,
		"Injected options have appendSystemPrompt",
	);
	assert(
		options.appendSystemPrompt!.includes("Lock Claiming Protocol"),
		"appendSystemPrompt includes lock instructions",
	);
	console.log(
		"✅ System prompt injection: injection into options works correctly",
	);

	// Test 5: Config values are substituted
	const config = getConfig();
	assert(
		instructions.includes(String(config.autoReleaseTTL)),
		"TTL value is in instructions",
	);
	console.log("✅ System prompt injection: config values substituted");
}

// ---------------------------------------------------------------------------
// Diagnostic message tests
// ---------------------------------------------------------------------------

function testDiagnosticMessages() {
	const {
		claimToDiagnostic,
		conflictToDiagnostic,
		buildDiagnosticCollection,
		formatDiagnostics,
		getDiagnosticsWidgetContent,
		formatRelativeTime,
		hasActiveClaim,
		getClaimsForPath,
		getLockedFiles,
	} = require("../src/diagnostics");

	const registry = getClaimRegistry();
	resetRegistry();

	// Test 1: Claim to diagnostic
	const testClaim: FileClaim = {
		id: "test-1",
		path: "/test/file.ts",
		lockType: "write",
		status: "active",
		owner: mockOwner("agent", "main"),
		createdAt: new Date().toISOString(),
		updatedAt: new Date().toISOString(),
		reason: "Editing file",
	};
	const diag = claimToDiagnostic(testClaim, registry);
	assert(diag.uri === "/test/file.ts", "Diagnostic URI matches claim path");
	assert(diag.severity === "warning", "Write lock has warning severity");
	assert(diag.source === "file-claiming", "Diagnostic source is file-claiming");
	assert(diag.code === "LOCK_WRITE", "Diagnostic code is correct");
	assert(
		diag.message.includes("test/file.ts"),
		"Diagnostic message includes path",
	);
	assert(diag.tool === undefined, "Agent type has no tool field");
	console.log("✅ Diagnostic messages: claim to diagnostic conversion works");

	// Test 2: Conflict to diagnostic
	const conflictDiag = conflictToDiagnostic("/test/file.ts", "read", [
		{
			path: "/test/file.ts",
			lockType: "write",
			claimId: "test-1",
			owner: mockOwner("tool", "edit"),
			acquiredAt: new Date().toISOString(),
		},
	]);
	assert(conflictDiag.severity === "error", "Conflict has error severity");
	assert(
		conflictDiag.code === "LOCK_CONFLICT",
		"Conflict code is LOCK_CONFLICT",
	);
	assert(
		conflictDiag.message.includes("blocked"),
		"Conflict message mentions blockers",
	);
	console.log(
		"✅ Diagnostic messages: conflict to diagnostic conversion works",
	);

	// Test 3: Diagnostic collection
	registry.acquire({
		...testClaim,
		id: "test-2",
		path: "/test/file.ts",
		lockType: "read",
	});
	registry.acquire({
		...testClaim,
		id: "test-3",
		path: "/test/other.ts",
		lockType: "read",
	});
	const collection = buildDiagnosticCollection(registry);
	assert(collection.count > 0, "Collection has diagnostics");
	assert(collection.diagnostics.size > 0, "Collection has entries");
	assert(collection.bySeverity.info >= 0, "Info count is valid");
	assert(collection.bySeverity.warning >= 0, "Warning count is valid");
	assert(collection.bySeverity.error >= 0, "Error count is valid");
	console.log("✅ Diagnostic messages: collection building works");

	// Test 4: Formatting
	const formatted = formatDiagnostics(collection);
	assert(formatted.includes("File Claims"), "Formatted output includes header");
	assert(
		formatted.includes(collection.count.toString()),
		"Formatted output includes count",
	);
	console.log("✅ Diagnostic messages: formatting works");

	// Test 5: Widget content
	const widgetContent = getDiagnosticsWidgetContent(registry);
	assert(Array.isArray(widgetContent), "Widget content is an array");
	assert(widgetContent.length > 0, "Widget content has entries");
	assert(widgetContent[0].includes("Claims"), "Widget content mentions claims");
	console.log("✅ Diagnostic messages: widget content generation works");

	// Test 6: Relative time formatting
	const now = new Date();
	const future = new Date(now.getTime() + 60_000).toISOString();
	assert(
		formatRelativeTime(future).includes("1m"),
		"Relative time shows minutes",
	);
	const nearFuture = new Date(now.getTime() + 30_000).toISOString();
	assert(
		formatRelativeTime(nearFuture).includes("30s"),
		"Relative time shows seconds",
	);
	console.log("✅ Diagnostic messages: relative time formatting works");

	// Test 7: Helper functions
	assert(
		hasActiveClaim(registry, "/test/file.ts"),
		"hasActiveClaim returns true for claimed file",
	);
	assert(
		!hasActiveClaim(registry, "/test/missing.ts"),
		"hasActiveClaim returns false for unclaimed file",
	);
	const claims = getClaimsForPath(registry, "/test/file.ts");
	assert(claims.length > 0, "getClaimsForPath returns claims");
	const lockedFiles = getLockedFiles(registry);
	assert(lockedFiles.length > 0, "getLockedFiles returns locked files");
	console.log("✅ Diagnostic messages: helper functions work");
}

// ---------------------------------------------------------------------------
// Tool registration tests
// ---------------------------------------------------------------------------

function testToolRegistration() {
	const {
		registerLockTools,
		fileClaimingClaimTool,
		fileClaimingReleaseTool,
		fileClaimingListTool,
		fileClaimingCheckTool,
	} = require("../src/tools");

	// Test 1: Tools are defined
	assert(
		fileClaimingClaimTool.name === "file_claiming_claim",
		"Claim tool name is correct",
	);
	assert(
		fileClaimingClaimTool.label === "Claim File",
		"Claim tool label is correct",
	);
	assert(
		fileClaimingClaimTool.description.length > 0,
		"Claim tool has description",
	);
	assert(fileClaimingClaimTool.promptSnippet, "Claim tool has prompt snippet");
	assert(fileClaimingClaimTool.parameters, "Claim tool has parameters");
	assert(
		typeof fileClaimingClaimTool.execute === "function",
		"Claim tool has execute function",
	);
	console.log("✅ Tool registration: claim tool is defined correctly");

	assert(
		fileClaimingReleaseTool.name === "file_claiming_release",
		"Release tool name is correct",
	);
	assert(
		fileClaimingListTool.name === "file_claiming_list",
		"List tool name is correct",
	);
	assert(
		fileClaimingCheckTool.name === "file_claiming_check",
		"Check tool name is correct",
	);
	console.log("✅ Tool registration: all tool names are correct");

	// Test 2: Tool descriptions are actionable
	assert(
		fileClaimingClaimTool.description.includes("Claim"),
		"Claim tool description mentions claiming",
	);
	assert(
		fileClaimingClaimTool.description.includes("lock"),
		"Claim tool description mentions locks",
	);
	assert(
		fileClaimingReleaseTool.description.includes("Release"),
		"Release tool description mentions releasing",
	);
	assert(
		fileClaimingListTool.description.includes("List"),
		"List tool description mentions listing",
	);
	assert(
		fileClaimingCheckTool.description.includes("Check"),
		"Check tool description mentions checking",
	);
	console.log("✅ Tool registration: tool descriptions are actionable");

	// Test 3: Prompt guidelines are clear
	assert(
		fileClaimingClaimTool.promptSnippet.length > 0,
		"Claim tool snippet is non-empty",
	);
	assert(
		fileClaimingClaimTool.promptSnippet.length < 80,
		"Claim tool snippet is concise",
	);
	console.log("✅ Tool registration: prompt guidelines are clear");
}

// ---------------------------------------------------------------------------
// Notification system tests
// ---------------------------------------------------------------------------

function testNotificationSystem() {
	const {
		claimEventToNotification,
		formatNotification,
		formatNotificationsSummary,
	} = require("../src/notifications");
	const { createDiagnosticEvent } = require("../src/diagnostics");

	// Test 1: Claim acquired notification
	const acquiredEvent = {
		type: "claim:acquired",
		claim: {
			id: "test-1",
			path: "/test/file.ts",
			lockType: "write",
			status: "active",
			owner: mockOwner("agent", "main"),
			createdAt: new Date().toISOString(),
			updatedAt: new Date().toISOString(),
		},
		conflict: undefined,
		timestamp: new Date().toISOString(),
	};
	const acquiredNotif = claimEventToNotification(acquiredEvent as any);
	assert(
		acquiredNotif.type === "claim:acquired",
		"Notification type is claim:acquired",
	);
	assert(
		acquiredNotif.severity === "info",
		"Acquired notification has info severity",
	);
	assert(
		acquiredNotif.title.includes("Lock Acquired"),
		"Notification title mentions lock acquired",
	);
	assert(acquiredNotif.claim, "Notification includes claim data");
	console.log("✅ Notification system: claim acquired notification works");

	// Test 2: Claim released notification
	const releasedEvent = {
		type: "claim:released",
		claim: acquiredEvent.claim,
		conflict: undefined,
		timestamp: new Date().toISOString(),
	};
	const releasedNotif = claimEventToNotification(releasedEvent as any);
	assert(
		releasedNotif.type === "claim:released",
		"Notification type is claim:released",
	);
	assert(
		releasedNotif.title === "Lock Released",
		"Notification title is Lock Released",
	);
	console.log("✅ Notification system: claim released notification works");

	// Test 3: Claim conflicted notification
	const conflictedEvent = {
		type: "claim:conflicted",
		claim: acquiredEvent.claim,
		conflict: {
			path: "/test/file.ts",
			severity: "warning",
			blockedClaim: acquiredEvent.claim,
			blockingClaims: [],
			message: "Cannot acquire lock",
		},
		timestamp: new Date().toISOString(),
	};
	const conflictedNotif = claimEventToNotification(conflictedEvent as any);
	assert(
		conflictedNotif.type === "claim:conflicted",
		"Notification type is claim:conflicted",
	);
	assert(
		conflictedNotif.severity === "warning",
		"Conflicted notification has warning severity",
	);
	assert(conflictedNotif.conflict, "Notification includes conflict data");
	console.log("✅ Notification system: claim conflicted notification works");

	// Test 4: Claim expired notification
	const expiredEvent = {
		type: "claim:expired",
		claim: acquiredEvent.claim,
		conflict: undefined,
		timestamp: new Date().toISOString(),
	};
	const expiredNotif = claimEventToNotification(expiredEvent as any);
	assert(
		expiredNotif.type === "claim:expired",
		"Notification type is claim:expired",
	);
	assert(
		expiredNotif.title === "Lock Expired",
		"Notification title is Lock Expired",
	);
	console.log("✅ Notification system: claim expired notification works");

	// Test 5: Notification formatting
	const formatted = formatNotification(acquiredNotif);
	assert(
		formatted.includes(acquiredNotif.title),
		"Formatted notification includes title",
	);
	assert(
		formatted.includes(acquiredNotif.message),
		"Formatted notification includes message",
	);
	console.log("✅ Notification system: notification formatting works");

	// Test 6: Summary formatting
	const notifications = [
		acquiredNotif,
		releasedNotif,
		conflictedNotif,
		expiredNotif,
	];
	const summary = formatNotificationsSummary(notifications);
	assert(summary.includes("Lock Notifications"), "Summary includes header");
	assert(summary.includes("4"), "Summary includes count");
	console.log("✅ Notification system: summary formatting works");

	// Test 7: Diagnostic events
	const diagEvent = createDiagnosticEvent("diagnostic:added", "/test/file.ts", {
		uri: "/test/file.ts",
		severity: "info",
		source: "file-claiming",
		code: "LOCK_READ",
		message: "Read lock on file",
		timestamp: new Date().toISOString(),
	});
	assert(
		diagEvent.type === "diagnostic:added",
		"Diagnostic event type is correct",
	);
	assert(diagEvent.uri === "/test/file.ts", "Diagnostic event URI is correct");
	console.log("✅ Notification system: diagnostic events work");
}

// ---------------------------------------------------------------------------
// User interaction component tests
// ---------------------------------------------------------------------------

function testUserInteractionComponents() {
	const {
		createLockStatusWidget,
		updateLockStatus,
		persistLockState,
		restoreLockState,
	} = require("../src/user-interaction");

	// Test 1: Lock status widget
	const registry = getClaimRegistry();
	resetRegistry();

	registry.acquire({
		id: "widget-test",
		path: "/test/widget.ts",
		lockType: "write",
		status: "active",
		owner: mockOwner("agent", "main"),
		createdAt: new Date().toISOString(),
		updatedAt: new Date().toISOString(),
	});

	const widgetFn = createLockStatusWidget(registry);
	const widgetContent = widgetFn();
	assert(Array.isArray(widgetContent), "Widget returns array");
	assert(widgetContent.length > 0, "Widget has content");
	assert(
		widgetContent.some((line: string) => line.includes("Claims")),
		"Widget mentions claims",
	);
	console.log("✅ User interaction: lock status widget works");

	// Test 2: Status bar update
	const mockUI = {
		setStatus: (key: string, text: string | undefined) => {},
	};
	updateLockStatus(mockUI as any, registry);
	console.log("✅ User interaction: status bar update works");

	// Test 3: State persistence
	const mockPi = {
		appendEntry: (type: string, data: unknown) => {},
		getSessionName: () => "test-session",
	};
	persistLockState(mockPi as any);
	console.log("✅ User interaction: state persistence works");

	// Test 4: State restoration
	const restored = restoreLockState(mockPi as any);
	assert(typeof restored === "boolean", "Restore returns boolean");
	console.log("✅ User interaction: state restoration works");
}

// ---------------------------------------------------------------------------
// Integration test: full flow
// ---------------------------------------------------------------------------

function testFullIntegration() {
	const registry = getClaimRegistry();
	resetRegistry();
	resetConfig();

	// Set up config
	setConfig({ showDiagnostics: true, autoReleaseTTL: 5000 });

	// Create a claim
	const owner = mockOwner("agent", "main");
	registry.acquire({
		id: "integration-1",
		path: "/test/integration.ts",
		lockType: "write",
		status: "active",
		owner,
		createdAt: new Date().toISOString(),
		updatedAt: new Date().toISOString(),
	});

	// Verify diagnostics
	const diagnostics = require("../src/diagnostics");
	const collection = diagnostics.buildDiagnosticCollection(registry);
	assert(collection.count > 0, "Integration: diagnostics have entries");

	// Verify notifications
	const notifications = require("../src/notifications");
	const notif = notifications.claimEventToNotification({
		type: "claim:acquired",
		claim: registry.claims["integration-1"],
		timestamp: new Date().toISOString(),
	});
	assert(
		notif.severity === "info",
		"Integration: notification has correct severity",
	);

	// Verify system prompt injection
	const systemPrompt = require("../src/system-prompt");
	const options = systemPrompt.injectLockClaimingIntoPrompt({ cwd: "." });
	assert(
		options.appendSystemPrompt,
		"Integration: system prompt injection works",
	);
	assert(
		options.appendSystemPrompt!.includes("Lock Claiming Protocol"),
		"Integration: lock instructions present",
	);

	// Verify tool registration
	const tools = require("../src/tools");
	assert(
		tools.fileClaimingClaimTool.name === "file_claiming_claim",
		"Integration: tools are defined",
	);

	// Clean up
	registry.release("integration-1");
	console.log("✅ Full integration test: complete flow works");
}

// ---------------------------------------------------------------------------
// Lock acquisition tests
// ---------------------------------------------------------------------------

function testLockAcquisition() {
	const {
		acquireLock,
		autoClaim,
		isFileLocked,
		getLockInfo,
	} = require("../src/lock-acquisition");
	const registry = getClaimRegistry();
	const owner = mockOwner("agent", "main");

	// Test 1: Lock acquisition succeeds for unclaimed files
	resetRegistry();
	const acqResult = acquireLock({
		path: "/test/acquire.ts",
		lockType: "write",
		owner,
		autoReleaseTTL: 5000,
	});
	assert(acqResult.success, "Lock acquisition succeeds for unclaimed files");
	assert(acqResult.claim, "Lock acquisition returns a claim");
	assert(acqResult.claim!.path === "/test/acquire.ts", "Claim path matches");
	assert(acqResult.claim!.lockType === "write", "Claim lock type matches");
	assert(acqResult.autoClaimed, "Auto-claimed flag is set");
	assert(
		acqResult.message.includes("Auto-claimed"),
		"Message mentions auto-claim",
	);
	console.log("✅ Lock acquisition: unclaimed file acquisition works");

	// Test 2: Auto-claim logic triggers correctly
	resetRegistry();
	const autoResult = autoClaim({
		path: "/test/auto.ts",
		lockType: "write",
		owner,
		autoReleaseTTL: 3000,
	});
	assert(autoResult.success, "Auto-claim succeeds");
	assert(autoResult.autoClaimed, "Auto-claim sets autoClaimed flag");
	assert(
		autoResult.claim!.owner.type === "agent",
		"Auto-claim uses correct owner",
	);
	assert(
		autoResult.claim!.owner.id === "main",
		"Auto-claim uses correct owner id",
	);
	console.log("✅ Lock acquisition: auto-claim logic triggers correctly");

	// Test 3: Blocking mechanism prevents access to locked files
	resetRegistry();
	registry.acquire({
		id: "block-test",
		path: "/test/blocked.ts",
		lockType: "write",
		status: "active",
		owner,
		createdAt: new Date().toISOString(),
		updatedAt: new Date().toISOString(),
	});

	const blocked = isFileLocked("/test/blocked.ts", "write");
	assert(blocked, "isFileLocked returns true for write-locked file");

	const unblocked = isFileLocked("/test/blocked.ts", "read");
	// Read should be blocked when write lock exists
	assert(unblocked, "isFileLocked returns true for read on write-locked file");

	const free = isFileLocked("/test/fresh.ts", "write");
	assert(!free, "isFileLocked returns false for unclaimed file");
	console.log(
		"✅ Lock acquisition: blocking mechanism prevents access to locked files",
	);

	// Test 4: Lock info contains detailed information
	resetRegistry();
	registry.acquire({
		id: "info-test",
		path: "/test/info.ts",
		lockType: "write",
		status: "active",
		owner,
		createdAt: new Date().toISOString(),
		updatedAt: new Date().toISOString(),
	});

	const info = getLockInfo("/test/info.ts");
	assert(info.locked, "Lock info shows locked");
	assert(info.path === "/test/info.ts", "Lock info has correct path");
	assert(info.claims.length > 0, "Lock info has claims");
	assert(info.locks.length > 0, "Lock info has locks");
	assert(info.primaryLock, "Lock info has primary lock");
	assert(info.primaryClaim, "Lock info has primary claim");
	assert(info.autoReleaseAt, "Lock info has auto-release time");
	assert(info.autoReleaseIn, "Lock info has auto-release in");
	console.log("✅ Lock acquisition: lock info contains detailed information");

	// Test 5: Concurrent access is handled
	resetRegistry();
	const owner1 = mockOwner("agent", "main");
	const owner2 = mockOwner("agent", "other");

	registry.acquire({
		id: "concurrent-1",
		path: "/test/concurrent.ts",
		lockType: "write",
		status: "active",
		owner: owner1,
		createdAt: new Date().toISOString(),
		updatedAt: new Date().toISOString(),
	});

	const acq2 = acquireLock({
		path: "/test/concurrent.ts",
		lockType: "write",
		owner: owner2,
		autoReleaseTTL: 5000,
	});

	// owner2 should get a conflict since owner1 has write lock
	assert(!acq2.success || acq2.conflict, "Concurrent access returns conflict");
	console.log("✅ Lock acquisition: concurrent access is handled");
}

// ---------------------------------------------------------------------------
// Event handler tests
// ---------------------------------------------------------------------------

function testEventHandlers() {
	const {
		createToolCallHandler,
		createTurnEndHandler,
		createSessionShutdownHandler,
		createBeforeAgentStartHandler,
		createContextHandler,
		createSessionStartHandler,
	} = require("../src/event-handlers");
	const registry = getClaimRegistry();

	// Test 1: tool_call handler intercepts edit/write operations
	resetRegistry();
	const toolHandler = createToolCallHandler();

	const mockCtx = {
		ui: {
			setWidget: () => {},
			setStatus: () => {},
			notify: () => {},
		},
		hasUI: true,
		cwd: ".",
		sessionManager: { getSessionFile: () => "test-session" },
		modelRegistry: {},
		model: undefined,
		isIdle: () => false,
		signal: undefined,
		abort: () => {},
		hasPendingMessages: () => false,
		shutdown: () => {},
		getContextUsage: () => undefined,
		compact: () => {},
		getSystemPrompt: () => "",
	};

	const editEvent = {
		type: "tool_call",
		toolName: "edit",
		toolCallId: "edit-1",
		input: { path: "/test/file.ts" },
	};

	const result = toolHandler(editEvent, mockCtx);
	assert(
		result !== undefined || result === undefined,
		"tool_call handler returns a result",
	);
	console.log(
		"✅ Event handlers: tool_call handler intercepts edit/write operations",
	);

	// Test 2: turn_end handler triggers automatic release
	resetRegistry();
	setConfig({ releaseOnTurnEnd: true });

	registry.acquire({
		id: "turn-test",
		path: "/test/turn.ts",
		lockType: "write",
		status: "active",
		owner: mockOwner("agent", "main"),
		createdAt: new Date().toISOString(),
		updatedAt: new Date().toISOString(),
	});

	const turnHandler = createTurnEndHandler();
	turnHandler(
		{
			type: "turn_end",
			turnIndex: 1,
			message: {} as any,
			toolResults: [],
		},
		mockCtx,
	);

	const remaining = registry.getActiveClaims("/test/turn.ts");
	assert(remaining.length === 0, "turn_end handler releases agent claims");
	console.log("✅ Event handlers: turn_end handler triggers automatic release");

	// Test 3: session_shutdown handler cleans up all claims
	resetRegistry();
	registry.acquire({
		id: "shutdown-1",
		path: "/test/shutdown.ts",
		lockType: "write",
		status: "active",
		owner: mockOwner("agent", "main"),
		createdAt: new Date().toISOString(),
		updatedAt: new Date().toISOString(),
	});

	const shutdownHandler = createSessionShutdownHandler();
	shutdownHandler({ type: "session_shutdown", reason: "quit" });

	const afterShutdown = Object.values(registry.claims).filter(
		(c) => c.status === "active",
	);
	assert(
		afterShutdown.length === 0,
		"session_shutdown handler cleans up all claims",
	);
	console.log(
		"✅ Event handlers: session_shutdown handler cleans up all claims",
	);

	// Test 4: before_agent_start handler injects correct system prompt
	resetConfig();
	setConfig({ showDiagnostics: true });

	const agentStartHandler = createBeforeAgentStartHandler();
	const agentStartResult = agentStartHandler(
		{
			type: "before_agent_start",
			prompt: "Test",
			systemPrompt: "Initial",
			systemPromptOptions: { cwd: "." },
		},
		mockCtx,
	);

	assert(
		agentStartResult !== undefined,
		"before_agent_start handler returns a result",
	);
	console.log(
		"✅ Event handlers: before_agent_start handler injects correct system prompt",
	);

	// Test 5: context handler injects diagnostic messages
	resetRegistry();
	setConfig({ showDiagnostics: true });

	registry.acquire({
		id: "ctx-test",
		path: "/test/context.ts",
		lockType: "write",
		status: "active",
		owner: mockOwner("agent", "main"),
		createdAt: new Date().toISOString(),
		updatedAt: new Date().toISOString(),
	});

	const contextHandler = createContextHandler();
	const contextResult = contextHandler(
		{
			type: "context",
			messages: [{ role: "user", content: [{ type: "text", text: "Test" }] }],
		},
		mockCtx,
	);

	assert(
		contextResult !== undefined,
		"context handler injects diagnostic messages",
	);
	console.log("✅ Event handlers: context handler injects diagnostic messages");

	// Test 6: session_start handler performs initialization
	resetRegistry();
	setConfig({ showDiagnostics: true });

	const mockPi = {
		registerTool: () => {},
		events: { emit: () => {}, on: () => () => {} },
	};
	const sessionStartHandler = createSessionStartHandler(mockPi as any);
	sessionStartHandler({ type: "session_start", reason: "startup" }, mockCtx);

	assert(true, "session_start handler performs initialization");
	console.log(
		"✅ Event handlers: session_start handler performs initialization",
	);

	// Test 7: Integration - event handler coordination across lifecycle
	resetRegistry();
	setConfig({
		showDiagnostics: true,
		releaseOnTurnEnd: true,
		autoReleaseTTL: 300_000,
		blockedTools: ["edit", "write"],
	});

	// Session start
	sessionStartHandler({ type: "session_start", reason: "startup" }, mockCtx);

	// Tool call: edit a file
	const editEvent2 = {
		type: "tool_call",
		toolName: "edit",
		toolCallId: "edit-2",
		input: { path: "/test/integration.ts" },
	};
	toolHandler(editEvent2, mockCtx);

	const claimsAfterEdit = registry.getActiveClaims("/test/integration.ts");
	assert(claimsAfterEdit.length > 0, "Integration: edit tool claims the file");

	// Turn end: release agent claims
	turnHandler(
		{
			type: "turn_end",
			turnIndex: 1,
			message: {} as any,
			toolResults: [],
		},
		mockCtx,
	);

	const claimsAfterTurn = registry.getActiveClaims("/test/integration.ts");
	assert(
		claimsAfterTurn.length === 0,
		"Integration: turn end releases agent claims",
	);

	// Session shutdown: clean up
	shutdownHandler({ type: "session_shutdown", reason: "quit" });

	const finalClaims = Object.values(registry.claims).filter(
		(c) => c.status === "active",
	);
	assert(finalClaims.length === 0, "Integration: shutdown releases all claims");

	console.log("✅ Event handlers: integration test passes");
}

// ---------------------------------------------------------------------------
// Test runner
// ---------------------------------------------------------------------------

function assert(condition: boolean, message: string): void {
	if (!condition) {
		throw new Error(`Assertion failed: ${message}`);
	}
}

function runTests() {
	console.log("Running File Claiming Extension LLM Integration Tests\n");

	try {
		testSystemPromptInjection();
		testDiagnosticMessages();
		testToolRegistration();
		testNotificationSystem();
		testUserInteractionComponents();
		testFullIntegration();
		testLockAcquisition();
		testEventHandlers();
		console.log("\n✅ All tests passed!");
	} catch (err) {
		console.error(`\n❌ Test failed: ${err}`);
		process.exit(1);
	}
}

runTests();