'use strict';

const assert = require('assert');
const path = require('path');
const os = require('os');
const fs = require('fs');
const catalog = require('../lib/catalog.js');
const compaction = require('../agent/compaction.js');
const sr = require('../agent/search-replace.js');
const toolSet = require('../agent/tool-set.js');
const prompts = require('../agent/prompts.js');
const net = require('../lib/net.js');
const customTools = require('../agent/custom-tools.js');
const planMode = require('../agent/plan-mode.js');
const todos = require('../agent/todos.js');
const stationarity = require('../agent/stationarity.js');
const truncate = require('../agent/truncate.js');
const permRules = require('../agent/perm-rules.js');
const policy = require('../agent/policy.js');
const toolBudget = require('../agent/tool-budget.js');
const paths = require('../lib/paths.js');
const device = require('../lib/device.js');
const tools = require('../agent/tools.js');

function testCatalog() {
  assert.strictEqual(catalog.resolveModelConstant('qwen3.5-4b'), 'QWEN3_5_4B_MULTIMODAL_Q4_K_M');
  assert.strictEqual(catalog.resolveModelConstant('gemma4-4b'), 'GEMMA4_4B_MULTIMODAL_Q4_K_M');
  assert.strictEqual(catalog.resolveModelConstant('qwen3-8b'), 'QWEN3_8B_INST_Q4_K_M');
  assert.strictEqual(catalog.resolveModelConstant('qwen3vl-2b'), 'QWEN3_VL_2B_INSTRUCT_Q4_K_M');
  assert.strictEqual(catalog.findCatalogEntry('gemma4-4b').vision, true);
  assert.strictEqual(catalog.findCatalogEntry('qwen3-8b').vision, false);
  assert.strictEqual(catalog.toolDialectFor('gemma4-4b'), 'gemma4');
  assert.strictEqual(catalog.toolDialectFor('qwen3-8b'), 'hermes');
  assert.strictEqual(catalog.toolDialectFor('qwen3.5-2b'), 'qwen35');
  assert.strictEqual(catalog.toolDialectFor('qwen3.5-0.8b'), 'qwen35');
  assert.strictEqual(catalog.toolDialectFor('QWEN3_5_2B_MULTIMODAL_Q4_K_M'), 'qwen35');
  assert.strictEqual(catalog.findCatalogEntry('qwen3.5-2b').tools, true);
  assert.strictEqual(catalog.findCatalogEntry('qwen3.5-2b').compactTools, true);
  assert.strictEqual(catalog.findCatalogEntry('qwen3.5-0.8b').tools, true);
  assert.strictEqual(catalog.findCatalogEntry('qwen3.5-0.8b').compactTools, true);
  assert.strictEqual(catalog.isCompactToolModel('qwen3.5-2b'), true);
  assert.strictEqual(catalog.isCompactToolModel('qwen3.5-0.8b'), true);
  assert.strictEqual(catalog.isCompactToolModel('qwen3.5-4b'), false);
  assert.strictEqual(catalog.findCatalogEntry('qwen3.5-0.8b').ctxSize, 16384);
  assert.strictEqual(catalog.findCatalogEntry('qwen3.5-2b').ctxSize, 16384);
  assert.strictEqual(catalog.findCatalogEntry('qwen3-1.7b').ctxSize, 16384);
  assert.ok(catalog.findCatalogEntry('qwen3.5-4b').ctxSize >= 8192);
  const tiny = catalog.filterToolsForModel(
    [{ name: 'web_search' }, { name: 'qvac_capability' }, { name: 'cu_drag' }],
    'qwen3.5-0.8b',
  );
  assert.deepStrictEqual(tiny.map((t) => t.name), ['web_search']);
  assert.strictEqual(
    catalog.filterToolsForModel([{ name: 'todo_write' }, { name: 'cu_drag' }], 'qwen3.5-0.8b')[0].name,
    'todo_write',
  );
  assert.strictEqual(catalog.filterToolsForModel([{ name: 'cu_drag' }], 'qwen3.5-4b')[0].name, 'cu_drag');
  assert.deepStrictEqual(catalog.compactGenerationParams('qwen3.5-0.8b'), { temp: 0.55 });
  assert.strictEqual(catalog.reasoningBudgetForModel('qwen3.5-0.8b'), 128);
  assert.strictEqual(catalog.reasoningBudgetForModel('qwen3.5-4b'), 320);
  const largeGen = catalog.generationParamsForModel('qwen3.5-4b', { predict: 64 });
  assert.strictEqual(largeGen.reasoning_budget, 320);
  assert.strictEqual(largeGen.predict, 64);
  assert.strictEqual(largeGen.repeat_penalty, 1.15);
  assert.ok(/~5 GB/.test(catalog.catalogLabel(catalog.findCatalogEntry('qwen3-8b'))));
  assert.ok(catalog.FALLBACK_LLM_IDS.indexOf('gemma4-4b') >= 0);
  const listed = catalog.listCatalog().find((m) => m.id === 'gemma4-2b');
  assert.ok(listed && listed.label.indexOf('~3.5 GB') >= 0);
}

function hugeToolDefs() {
  return Array.from({ length: 24 }, (_, i) => ({
    name: 'tool_' + i,
    description: 'd'.repeat(400),
    parameters: { type: 'object', properties: { q: { type: 'string' } } },
  }));
}

function testCompaction() {
  const sys = { role: 'system', content: 'sys' };
  const user = { role: 'user', content: 'hello' };
  const hist = [sys, user];
  for (let i = 0; i < 40; i++) {
    hist.push({ role: 'assistant', content: 'x'.repeat(200) });
    hist.push({ role: 'tool', name: 'read_file', content: 'y'.repeat(200) });
  }
  assert.ok(compaction.shouldCompact(hist, [], 1024));
  const out = compaction.compact(hist, { budgetTokens: 400, tools: [] });
  assert.ok(out.length < hist.length);
  assert.strictEqual(out[0].role, 'system');
  assert.ok(compaction.isOverflowError(new Error('prompt too long for context window')));

  const tools = hugeToolDefs();
  const short = [
    { role: 'system', content: 'You are Jarvis' },
    { role: 'assistant', content: 'Hello! How can I help you today?' },
    { role: 'user', content: 'Hi, please tell me about my computer.' },
  ];
  assert.ok(compaction.toolTokens(tools) > 2000);
  assert.equal(compaction.shouldCompact(short, tools, 8192), false);
  const kept = compaction.compact(short, {
    budgetTokens: compaction.historyBudget(8192, tools, 0),
    tools,
  });
  assert.strictEqual(kept.length, short.length);
  assert.strictEqual(kept[2].content, short[2].content);
  assert.ok(JSON.stringify(kept).indexOf('Earlier turns were compacted') < 0);

  const four = short.concat([
    { role: 'assistant', content: 'Let me look.' },
    { role: 'user', content: 'Go ahead.' },
  ]);
  assert.ok(compaction.nonSystemCount(four) >= compaction.MIN_COMPACT_MESSAGES);
  const stillKept = compaction.heuristicCompact(four, {
    budgetTokens: compaction.historyBudget(8192, tools, 0),
    tools,
  });
  assert.ok(stillKept.some((m) => String(m.content).indexOf('tell me about my computer') >= 0));
  assert.ok(JSON.stringify(stillKept).indexOf('Earlier turns were compacted') < 0);

  assert.strictEqual(compaction.autoContinue([{ role: 'assistant', content: 'hi' }], { voice: true }), null);
  assert.ok(compaction.autoContinue([{ role: 'assistant', content: 'hi' }]));
  assert.ok(compaction.compactReminder({ voice: true }).indexOf('Do not greet') >= 0);
  assert.ok(compaction.VOICE_COMPACT_PROMPT.indexOf('Do not greet') >= 0);
}

function testSearchReplace() {
  const applied = sr.applySearchReplace('aaa bbb aaa', 'bbb', 'ccc', false);
  assert.strictEqual(applied.text, 'aaa ccc aaa');
  assert.strictEqual(applied.replacements, 1);
}

function testToolSet() {
  assert.ok(toolSet.isHostWorkspaceTool('read_file'));
  assert.ok(!toolSet.parseHostWorkspace({ hostWorkspace: false }));
  const all = [
    { name: 'read_file' },
    { name: 'todo_write' },
    { name: 'web_fetch' },
  ];
  const page = toolSet.filterBuiltinSchemas(all, { hostWorkspace: false, builtinTools: ['todo_write'] });
  assert.ok(!page.find((t) => t.name === 'read_file'));
  const withFetch = toolSet.filterBuiltinSchemas(all, {
    hostWorkspace: true,
    builtinTools: ['web_fetch'],
    webFetch: true,
  });
  assert.ok(withFetch.find((t) => t.name === 'web_fetch'));
  const noFetch = toolSet.filterBuiltinSchemas(all, {
    hostWorkspace: true,
    builtinTools: ['web_fetch'],
  });
  assert.ok(!noFetch.find((t) => t.name === 'web_fetch'));
}

function testPrompts() {
  assert.ok(prompts.DEFAULT_SYSTEM.indexOf('QVAC') >= 0);
  assert.ok(prompts.DEFAULT_SYSTEM.indexOf('BridgeSwarm') < 0);
  const page = prompts.assemble({ cwd: 'container', hostWorkspace: false });
  assert.ok(page.indexOf('host filesystem') >= 0);
  const voice = prompts.assemble({
    personality: 'voice',
    extra: 'You are Jarvis, a local Ubuntu GNOME voice assistant.',
    cwd: '/tmp/jarvis',
    hostWorkspace: true,
    fsRead: (_c, n) => (n === 'AGENTS.md' ? '# AGENTS.md\nFollow Jarvis workspace rules.' : ''),
  });
  assert.ok(voice.indexOf('You are Jarvis') >= 0);
  assert.ok(voice.indexOf(prompts.DEFAULT_SYSTEM) < 0);
  assert.ok(voice.indexOf('coding agent') < 0);
  assert.ok(voice.indexOf('AGENTS.md') >= 0);
  assert.ok(voice.indexOf('Current workspace:') >= 0);
}

function testNet() {
  assert.throws(() => net.assertPublicHttpUrl('http://127.0.0.1/x'));
  assert.throws(() => net.assertPublicHttpUrl('http://192.168.1.1/x'));
  const u = net.assertPublicHttpUrl('https://example.com/a');
  assert.strictEqual(u.hostname, 'example.com');
  assert.strictEqual(net.assertHttpUrl('https://ifconfig.me/ip').hostname, 'ifconfig.me');
  assert.strictEqual(net.assertHttpUrl('http://192.168.1.1/status').hostname, '192.168.1.1');
  assert.throws(() => net.assertHttpUrl('file:///etc/passwd'));
}

function testCustomTools() {
  customTools.clear('s1');
  customTools.setSession('s1', { hostWorkspace: false });
  customTools.register('s1', {
    name: 'ping',
    description: 'ping',
    parameters: { type: 'object', properties: {} },
    execute: () => ({ ok: true }),
  });
  assert.ok(customTools.has('s1', 'ping'));
  assert.strictEqual(typeof customTools.getHandler('s1', 'ping'), 'function');
  customTools.clear('s1');
}

function testPlanTodosStationarity() {
  const pm = planMode.create();
  planMode.activate(pm);
  assert.ok(planMode.isActive(pm));
  const blocked = planMode.gateWrite(pm, 'write_file', { path: 'foo.txt' });
  assert.ok(blocked);
  const ok = planMode.gateWrite(pm, 'write_file', { path: 'plan.md' });
  assert.ok(!ok);

  const list = todos.merge([], [{ id: '1', content: 'a', status: 'pending' }], 'replace');
  assert.ok(todos.hasOpen(list));

  const st = stationarity.create();
  stationarity.observe(st, 'read_file', { path: 'a' });
  stationarity.observe(st, 'read_file', { path: 'a' });
  stationarity.observe(st, 'read_file', { path: 'a' });
  assert.ok(stationarity.shouldNudge(st) || !stationarity.shouldStop(st));
}

function testTruncateAndPerm() {
  const t = truncate.truncateWithMarker('x'.repeat(5000), 400);
  assert.ok(t.length < 5000);
  assert.ok(t.indexOf('truncated') >= 0);
  const pat = permRules.patternFromArgs('run_terminal_cmd', { command: 'git status -sb' });
  assert.strictEqual(pat, 'git status');
  assert.ok(policy.shellSafe('git status'));
  assert.ok(!policy.shellSafe('rm -rf /'));
  assert.ok(permRules.globish('uname -a', '*'));
  assert.strictEqual(permRules.patternFromArgs('run_terminal_cmd', { command: '*' }), '*');
  const voice = toolBudget.fromPayload({}, 'jarvis-qvac');
  toolBudget.markShell(voice);
  assert.strictEqual(voice.answerOnly, true);
  assert.ok(toolBudget.shouldSkipShell(voice));
}

function testPaths() {
  const dir = paths.ensureDir(path.join(os.tmpdir(), 'agent-harness-test'));
  assert.ok(fs.existsSync(dir));
  assert.ok(paths.isPathInside(dir, path.join(dir, 'a.txt')));
  assert.ok(!paths.isPathInside(dir, path.join(dir, '..', 'escape')));
}

function testQvacWorkerDeps() {
  assert.doesNotThrow(() => require('hyperdispatch/runtime'));
  assert.doesNotThrow(() => require('@qvac/registry-schema'));
}

function testDevicePrefersGpu() {
  const empty = { gpus: [], drivers: {}, vramBytes: 0 };
  assert.deepStrictEqual(device.pickDevice('auto', empty), { device: 'gpu', gpu_layers: 99 });
  assert.deepStrictEqual(device.pickDevice(undefined, empty), { device: 'gpu', gpu_layers: 99 });
  assert.deepStrictEqual(device.pickDevice('gpu', empty), { device: 'gpu', gpu_layers: 99 });
  assert.deepStrictEqual(device.pickDevice('cpu', { gpus: [{ name: 'NVIDIA' }], drivers: { vulkan: true } }), {
    device: 'cpu',
    gpu_layers: 0,
  });
  assert.strictEqual(device.mmprojOnGpu({}, empty, true), true);
  assert.strictEqual(device.mmprojOnGpu({ mmprojUseGpu: false }, empty, true), false);
  assert.strictEqual(device.mmprojOnGpu({}, empty, false), false);
  assert.strictEqual(device.gpuLayers({}, { device: 'gpu', gpu_layers: 99 }), 99);

  const sdkShape = {
    capabilities: {
      memory: { totalBytes: { status: 'supported', value: 32e9, provenance: { source: 'test' } } },
      gpus: {
        status: 'supported',
        value: [
          {
            id: '0',
            name: { status: 'supported', value: 'GeForce', provenance: { source: 'test' } },
            type: { status: 'supported', value: 2, provenance: { source: 'test' } },
            memoryTotalBytes: { status: 'supported', value: 24e9, provenance: { source: 'test' } },
            drivers: { vulkan: { status: 'supported', value: true, provenance: { source: 'test' } } },
          },
        ],
        provenance: { source: 'test' },
      },
    },
  };
  const norm = device.normalizeResources(sdkShape);
  assert.ok(device.hasGpu(norm));
  assert.ok(norm.vramBytes > 1e9);
  assert.strictEqual(device.backendLabel(norm).backend, 'vulkan');
}

function testToolParse() {
  const parse = require('../lib/tool-parse.js');
  const tools = [
    { name: 'web_search', parameters: { type: 'object', properties: { query: { type: 'string' } } } },
    { name: 'run_terminal_cmd', parameters: { type: 'object', properties: { command: { type: 'string' } } } },
  ];
  const xml = [
    '<think>',
    'I should look that up.',
    '<tool_call>',
    '<function=web_search>',
    '<parameter=query>weather in Paris</parameter>',
    '</function>',
    '</tool_call>',
    '</think>',
  ].join('\n');
  const nested = parse.extractCalls(xml, tools);
  assert.strictEqual(nested.length, 1);
  assert.strictEqual(nested[0].name, 'web_search');
  assert.strictEqual(nested[0].arguments.query, 'weather in Paris');

  const hermes = parse.extractCalls(
    '<think><tool_call>{"name":"web_search","arguments":{"query":"news"}}</tool_call></think>',
    tools
  );
  assert.strictEqual(hermes[0].name, 'web_search');
  assert.strictEqual(hermes[0].arguments.query, 'news');

  const aliased = parse.extractCalls(
    '<tool_call><function=search><parameter=query>headlines</parameter></function></tool_call>',
    tools
  );
  assert.strictEqual(aliased[0].name, 'web_search');

  const recovered = parse.recover({
    thinking: xml,
    text: 'I will search now.\n<tool_call><function=web_search><parameter=query>x</parameter></function></tool_call>',
    tools,
  });
  assert.strictEqual(recovered.calls[0].name, 'web_search');
  assert.strictEqual(recovered.text, 'I will search now.');
  assert.ok(parse.FORMAT_REMINDER.indexOf('<function=TOOL_NAME>') >= 0);
}

testCatalog();
testToolParse();
testCompaction();
testSearchReplace();
testToolSet();
testPrompts();
testNet();
testCustomTools();
testPlanTodosStationarity();
testTruncateAndPerm();
testPaths();
testQvacWorkerDeps();
testDevicePrefersGpu();
testGoogleSearchParseAndFallback();
testWebFetchTimeout()
  .then(() => testGoogleSearchFallsBackToDuckDuckGo())
  .then(() => {
    console.log('ok');
  })
  .catch((err) => {
    console.error(err);
    process.exitCode = 1;
  });

async function testWebFetchTimeout() {
  const orig = globalThis.fetch;
  globalThis.fetch = () => new Promise(() => {});
  const started = Date.now();
  try {
    const hung = await tools.webFetch('https://example.com/ip', 40);
    assert.ok(hung.error);
    assert.ok(/timed out/i.test(hung.error));
    assert.strictEqual(hung.url, 'https://example.com/ip');
    assert.ok(Date.now() - started < 2000);
  } finally {
    globalThis.fetch = orig;
  }

  globalThis.fetch = async (url) => ({
    status: 200,
    url: String(url),
    text: async () => '203.0.113.8',
  });
  try {
    const ok = await tools.webFetch('https://ifconfig.me/ip', 200);
    assert.strictEqual(ok.status, 200);
    assert.strictEqual(ok.url, 'https://ifconfig.me/ip');
    assert.strictEqual(ok.text, '203.0.113.8');
    assert.ok(!ok.error);
  } finally {
    globalThis.fetch = orig;
  }

  globalThis.fetch = async () => ({ status: 503, url: 'https://example.com', text: async () => 'down' });
  try {
    const failed = await tools.webFetch('https://example.com/status', 200);
    assert.ok(failed.error);
    assert.strictEqual(failed.status, 503);
    assert.strictEqual(failed.url, 'https://example.com');
  } finally {
    globalThis.fetch = orig;
  }
}

function testGoogleSearchParseAndFallback() {
  const parsed = tools.parseGoogleHits(
    '<a href="/url?q=https://example.com/page&amp;sa=U"><div class="BNeawe vvjwJb AP7Wnd">Example Domain</div></a>'
  );
  assert.strictEqual(parsed.length, 1);
  assert.strictEqual(parsed[0].url, 'https://example.com/page');
  assert.strictEqual(parsed[0].title, 'Example Domain');
  assert.strictEqual(tools.parseGoogleHits('<title>Google Search</title><noscript>Please click here</noscript>').length, 0);
  assert.ok(tools.SCHEMAS.find((t) => t.name === 'google_search'));
  assert.ok(tools.SCHEMAS.find((t) => t.name === 'fetch_page'));
  assert.ok(tools.SCHEMAS.find((t) => t.name === 'wiki_search'));
  const rss = require('../agent/web-search.js').parseRssItems(
    '<rss><item><title>Example</title><link>https://example.com/rss</link></item></rss>'
  );
  assert.strictEqual(rss[0].url, 'https://example.com/rss');
}

async function testGoogleSearchFallsBackToDuckDuckGo() {
  const orig = globalThis.fetch;
  globalThis.fetch = async (url) => {
    const href = String(url);
    if (href.indexOf('google.com') >= 0) {
      return {
        status: 200,
        url: href,
        text: async () => '<title>Google Search</title><noscript>Please click here</noscript>',
      };
    }
    return {
      status: 200,
      url: href,
      text: async () => '<a class="result__a" href="https://duckduckgo.com/l/?uddg=https%3A%2F%2Fexample.com%2Fddg">DDG Example</a>',
    };
  };
  try {
    const hits = await tools.webSearch('example domain', 200);
    assert.ok(Array.isArray(hits));
    assert.strictEqual(hits.length, 1);
    assert.strictEqual(hits[0].source, 'duckduckgo');
    assert.strictEqual(hits[0].url, 'https://example.com/ddg');
    assert.strictEqual(hits[0].title, 'DDG Example');
  } finally {
    globalThis.fetch = orig;
  }

  globalThis.fetch = async (url) => {
    const href = String(url);
    if (href.indexOf('google.com') >= 0) {
      return {
        status: 200,
        url: href,
        text: async () =>
          '<a href="/url?q=https://example.com/google&amp;sa=U"><div class="BNeawe vvjwJb AP7Wnd">From Google</div></a>',
      };
    }
    throw new Error('duckduckgo should not run when google hits');
  };
  try {
    const hits = await tools.googleSearchWithFallback('example domain', 200);
    assert.strictEqual(hits[0].source, 'google');
    assert.strictEqual(hits[0].url, 'https://example.com/google');
    assert.strictEqual(hits[0].title, 'From Google');
  } finally {
    globalThis.fetch = orig;
  }

  const bingHref =
    'https://www.bing.com/ck/a?!&&p=ae&u=a1aHR0cDovL3d3dy5leGFtcGxlLmNvbS8&ntb=1';
  globalThis.fetch = async (url) => {
    const href = String(url);
    if (href.indexOf('google.com') >= 0) {
      return { status: 200, url: href, text: async () => '<title>Google Search</title>' };
    }
    if (href.indexOf('duckduckgo.com') >= 0) {
      return {
        status: 202,
        url: href,
        text: async () => '<div class="anomaly-modal__title">Unfortunately, bots use DuckDuckGo too.</div>',
      };
    }
    return {
      status: 200,
      url: href,
      text: async () => '<li class="b_algo"><h2><a href="' + bingHref + '"><strong>Example Domain</strong></a></h2></li>',
    };
  };
  try {
    const hits = await tools.googleSearchWithFallback('example domain', 200);
    assert.strictEqual(hits[0].source, 'bing');
    assert.strictEqual(hits[0].url, 'http://www.example.com/');
  } finally {
    globalThis.fetch = orig;
  }
}