/**
 * Tests for gsd-statusline.js GSD state display helpers.
 *
 * Covers:
 * - parseStateMd across YAML-frontmatter, body-fallback, and partial formats
 * - formatGsdState graceful degradation when fields are missing
 * - readGsdState walk-up search with proper bounds
 */

'use strict';

const { test, describe } = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const os = require('node:os');
const path = require('node:path');

const {
  parseStateMd,
  formatGsdState,
  readGsdState,
  isInstalledAheadOfLatest,
} = require('../hooks/gsd-statusline.js');
const { cleanup } = require('./helpers.cjs');

// ─── parseStateMd ───────────────────────────────────────────────────────────

describe('parseStateMd', () => {
  test('parses full YAML frontmatter', () => {
    const content = [
      '---',
      'status: executing',
      'milestone: v1.9',
      'milestone_name: Code Quality',
      '---',
      '',
      '# State',
      'Phase: 1 of 5 (fix-graphiti-deployment)',
    ].join('\n');

    const s = parseStateMd(content);
    assert.equal(s.status, 'executing');
    assert.equal(s.milestone, 'v1.9');
    assert.equal(s.milestoneName, 'Code Quality');
    assert.equal(s.phaseNum, '1');
    assert.equal(s.phaseTotal, '5');
    assert.equal(s.phaseName, 'fix-graphiti-deployment');
  });

  test('treats literal "null" values as null', () => {
    const content = [
      '---',
      'status: null',
      'milestone: null',
      'milestone_name: null',
      '---',
    ].join('\n');

    const s = parseStateMd(content);
    assert.equal(s.status, null);
    assert.equal(s.milestone, null);
    assert.equal(s.milestoneName, null);
  });

  test('strips surrounding quotes from frontmatter values', () => {
    const content = [
      '---',
      'milestone_name: "Code Quality"',
      "milestone: 'v1.9'",
      '---',
    ].join('\n');

    const s = parseStateMd(content);
    assert.equal(s.milestone, 'v1.9');
    assert.equal(s.milestoneName, 'Code Quality');
  });

  test('parses phase without name', () => {
    const content = [
      '---',
      'status: planning',
      '---',
      'Phase: 3 of 10',
    ].join('\n');

    const s = parseStateMd(content);
    assert.equal(s.phaseNum, '3');
    assert.equal(s.phaseTotal, '10');
    assert.equal(s.phaseName, null);
  });

  test('falls back to body Status when frontmatter is missing', () => {
    const content = [
      '# State',
      'Status: Ready to plan',
    ].join('\n');

    const s = parseStateMd(content);
    assert.equal(s.status, 'planning');
  });

  test('body fallback recognizes executing state', () => {
    const content = 'Status: Executing phase 2';
    assert.equal(parseStateMd(content).status, 'executing');
  });

  test('body fallback recognizes complete state', () => {
    const content = 'Status: Complete';
    assert.equal(parseStateMd(content).status, 'complete');
  });

  test('body fallback recognizes archived as complete', () => {
    const content = 'Status: Archived';
    assert.equal(parseStateMd(content).status, 'complete');
  });

  test('returns empty object for empty content', () => {
    const s = parseStateMd('');
    assert.deepEqual(s, {});
  });

  test('returns partial state when only some fields present', () => {
    const content = [
      '---',
      'milestone: v2.0',
      '---',
    ].join('\n');

    const s = parseStateMd(content);
    assert.equal(s.milestone, 'v2.0');
    assert.equal(s.status, undefined);
    assert.equal(s.phaseNum, undefined);
  });

  test('parses next_phases from YAML block-list form (#3153)', () => {
    const content = [
      '---',
      'next_action: execute',
      'next_phases:',
      '  - 4.5',
      '  - 4.6',
      '---',
    ].join('\n');

    const s = parseStateMd(content);
    assert.equal(s.nextAction, 'execute');
    assert.deepEqual(s.nextPhases, ['4.5', '4.6']);
  });
});

// ─── formatGsdState ─────────────────────────────────────────────────────────

describe('formatGsdState', () => {
  test('formats full state with milestone name, status, and phase name', () => {
    const out = formatGsdState({
      milestone: 'v1.9',
      milestoneName: 'Code Quality',
      status: 'executing',
      phaseNum: '1',
      phaseTotal: '5',
      phaseName: 'fix-graphiti-deployment',
    });
    assert.equal(out, 'v1.9 Code Quality · executing · fix-graphiti-deployment (1/5)');
  });

  test('skips placeholder "milestone" value in milestoneName', () => {
    const out = formatGsdState({
      milestone: 'v1.0',
      milestoneName: 'milestone',
      status: 'planning',
    });
    assert.equal(out, 'v1.0 · planning');
  });

  test('uses short phase form when phase name is missing', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      status: 'executing',
      phaseNum: '3',
      phaseTotal: '7',
    });
    assert.equal(out, 'v2.0 · executing · ph 3/7');
  });

  test('omits phase entirely when phaseNum/phaseTotal missing', () => {
    const out = formatGsdState({
      milestone: 'v1.0',
      status: 'planning',
    });
    assert.equal(out, 'v1.0 · planning');
  });

  test('handles milestone version only (no name)', () => {
    const out = formatGsdState({
      milestone: 'v1.9',
      status: 'executing',
    });
    assert.equal(out, 'v1.9 · executing');
  });

  test('handles milestone name only (no version)', () => {
    const out = formatGsdState({
      milestoneName: 'Foundations',
      status: 'planning',
    });
    assert.equal(out, 'Foundations · planning');
  });

  test('treats numeric 100 percent as milestone complete (#3153)', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      percent: 100,
    });
    assert.equal(out, 'v2.0 [██████████] 100% · milestone complete');
  });

  test('returns empty string for empty state', () => {
    assert.equal(formatGsdState({}), '');
  });

  test('returns only available parts when everything else is missing', () => {
    assert.equal(formatGsdState({ status: 'planning' }), 'planning');
  });
});

describe('isInstalledAheadOfLatest', () => {
  test('treats prerelease patch increment as ahead of prior stable', () => {
    assert.equal(isInstalledAheadOfLatest('1.2.1-beta.1', '1.2.0'), true);
  });

  test('treats equal base version prerelease as not ahead', () => {
    assert.equal(isInstalledAheadOfLatest('1.2.0-rc.1', '1.2.0'), false);
  });
});

// ─── readGsdState ───────────────────────────────────────────────────────────

describe('readGsdState', () => {
  const tmpRoot = fs.mkdtempSync(path.join(os.tmpdir(), 'gsd-statusline-test-'));

  test('finds STATE.md in the starting directory', () => {
    const proj = fs.mkdtempSync(path.join(tmpRoot, 'proj-'));
    fs.mkdirSync(path.join(proj, '.planning'), { recursive: true });
    fs.writeFileSync(
      path.join(proj, '.planning', 'STATE.md'),
      '---\nstatus: executing\nmilestone: v1.0\n---\n'
    );

    const s = readGsdState(proj);
    assert.equal(s.status, 'executing');
    assert.equal(s.milestone, 'v1.0');
  });

  test('walks up to find STATE.md in a parent directory', () => {
    const proj = fs.mkdtempSync(path.join(tmpRoot, 'proj-'));
    fs.mkdirSync(path.join(proj, '.planning'), { recursive: true });
    fs.writeFileSync(
      path.join(proj, '.planning', 'STATE.md'),
      '---\nstatus: planning\n---\n'
    );

    const nested = path.join(proj, 'src', 'components', 'deep');
    fs.mkdirSync(nested, { recursive: true });

    const s = readGsdState(nested);
    assert.equal(s.status, 'planning');
  });

  test('returns null when no STATE.md exists in the walk-up chain', () => {
    const proj = fs.mkdtempSync(path.join(tmpRoot, 'proj-'));
    const nested = path.join(proj, 'src');
    fs.mkdirSync(nested, { recursive: true });

    assert.equal(readGsdState(nested), null);
  });

  test('returns null on malformed STATE.md without crashing', () => {
    const proj = fs.mkdtempSync(path.join(tmpRoot, 'proj-'));
    fs.mkdirSync(path.join(proj, '.planning'), { recursive: true });
    // Valid file (no content to crash on) — parseStateMd returns {}
    fs.writeFileSync(path.join(proj, '.planning', 'STATE.md'), '');

    const s = readGsdState(proj);
    // Empty file yields an empty state object, not null — the function
    // only returns null when no file is found.
    assert.deepEqual(s, {});
  });
});

// ─── CLAUDE_CODE_AUTO_COMPACT_WINDOW context meter (#2219) ──────────────────

describe('context meter respects CLAUDE_CODE_AUTO_COMPACT_WINDOW (#2219)', () => {
  const { execFileSync } = require('node:child_process');
  const hookPath = path.join(__dirname, '..', 'hooks', 'gsd-statusline.js');

  /**
   * Run the statusline hook with a synthetic context_window payload.
   * Returns { normalizedUsed, rawUsedPct } where:
   *   - normalizedUsed: the buffer-adjusted % shown in the statusline bar
   *     (parsed from the hook's stdout ANSI output, e.g. "60%")
   *   - rawUsedPct: the raw value written to the bridge file (100 - remaining,
   *     CC-consistent per #2451 fix)
   */
  function runHook(remainingPct, totalTokens, acwEnv) {
    const sessionId = `test-2219-${Date.now()}-${Math.random().toString(36).slice(2)}`;
    const payload = JSON.stringify({
      model: { display_name: 'Claude' },
      workspace: { current_dir: os.tmpdir() },
      session_id: sessionId,
      context_window: {
        remaining_percentage: remainingPct,
        total_tokens: totalTokens,
      },
    });

    const env = { ...process.env };
    if (acwEnv != null) {
      env.CLAUDE_CODE_AUTO_COMPACT_WINDOW = String(acwEnv);
    } else {
      delete env.CLAUDE_CODE_AUTO_COMPACT_WINDOW;
    }

    let stdout = '';
    try {
      stdout = execFileSync(process.execPath, [hookPath], {
        input: payload,
        env,
        encoding: 'utf8',
        timeout: 4000,
      });
    } catch (e) {
      stdout = e.stdout || '';
    }

    // Parse normalized used% from the statusline bar output (e.g. "60%")
    // Strip ANSI escape codes then extract the percentage digit(s) before "%"
    // eslint-disable-next-line no-control-regex -- \x1b (ESC) is the required leading byte of ANSI SGR color sequences; matching it is the purpose of stripping ANSI codes from captured CLI/console output
    const clean = stdout.replace(/\x1b\[[0-9;]*m/g, '');
    const match = clean.match(/(\d+)%/);
    const normalizedUsed = match ? parseInt(match[1], 10) : null;

    // Read raw used_pct from the bridge file (#2451: bridge stores raw CC value)
    const bridgePath = path.join(os.tmpdir(), `claude-ctx-${sessionId}.json`);
    let rawUsedPct = null;
    try {
      const bridge = JSON.parse(fs.readFileSync(bridgePath, 'utf8'));
      rawUsedPct = bridge.used_pct;
      fs.unlinkSync(bridgePath);
    } catch { /* bridge may not exist if hook exited early */ }

    return { normalizedUsed, rawUsedPct };
  }

  test('default buffer (no env var): 50% remaining → ~60% normalized bar display', () => {
    // Default 16.5% buffer: usableRemaining = (50 - 16.5) / (100 - 16.5) * 100 ≈ 40.12%
    // normalized used ≈ 100 - 40.12 = 59.88 → rounded 60 (shown in statusline bar)
    const { normalizedUsed } = runHook(50, 1_000_000, null);
    assert.strictEqual(normalizedUsed, 60);
  });

  test('CLAUDE_CODE_AUTO_COMPACT_WINDOW=400000: 50% remaining → 100% normalized bar display', () => {
    // ACW = 400k usable tokens out of 1M total → usable fraction = 40%, buffer = 60%.
    // (1 - 400000/1000000) * 100 = 60% buffer. With 50% remaining already below the
    // 60% buffer threshold, usableRemaining = max(0, (50-60)/(100-60)*100) = 0%,
    // normalized used = 100 (bar shows full — context is within the compact-trigger buffer).
    const { normalizedUsed } = runHook(50, 1_000_000, 400_000);
    assert.strictEqual(normalizedUsed, 100);
  });

  test('CLAUDE_CODE_AUTO_COMPACT_WINDOW=0 falls back to default buffer', () => {
    // Explicit "0" means unset — should behave like no env var (16.5% buffer)
    const { normalizedUsed } = runHook(50, 1_000_000, 0);
    assert.strictEqual(normalizedUsed, 60);
  });

  test('ACW exceeds total context: buffer clamped to 0% — used reflects real remaining', () => {
    // Pathological: ACW > totalCtx → (1 - 2M/1M) * 100 = -100% → clamped to 0%.
    // With 0% buffer, usableRemaining = 50%, normalized used = 50.
    // The Math.max(0, ...) clamp prevents negative buffer from inverting the display.
    const { normalizedUsed } = runHook(50, 1_000_000, 2_000_000);
    assert.strictEqual(normalizedUsed, 50);
  });

  test('bridge used_pct is raw (CC-consistent) regardless of ACW setting (#2451)', () => {
    // Fix for #2451: bridge used_pct must be raw (100 - remaining), not normalized.
    // This ensures gsd-context-monitor warning messages match CC native /context.
    // The ACW normalization only affects the statusline bar display, not the bridge.
    const { rawUsedPct } = runHook(50, 1_000_000, 400_000);
    assert.strictEqual(rawUsedPct, 50,
      'bridge used_pct must be raw (100-50=50) regardless of CLAUDE_CODE_AUTO_COMPACT_WINDOW');
  });
});

// ─── auto-compact buffer boundary tests (#1194) ─────────────────────────────

describe('context meter boundary: acw at/near totalCtx does not pin used at 100% (#1194)', () => {
  const { execFileSync } = require('node:child_process');
  const hookPath = path.join(__dirname, '..', 'hooks', 'gsd-statusline.js');

  /**
   * Run the hook with a given acw and totalTokens; remaining fixed at 50%.
   * Returns the normalizedUsed percentage shown in the statusline bar.
   */
  function runBoundaryHook(remainingPct, totalTokens, acwEnv) {
    const sessionId = `test-1194-${Date.now()}-${Math.random().toString(36).slice(2)}`;
    const payload = JSON.stringify({
      model: { display_name: 'Claude' },
      workspace: { current_dir: os.tmpdir() },
      session_id: sessionId,
      context_window: {
        remaining_percentage: remainingPct,
        total_tokens: totalTokens,
      },
    });

    const env = { ...process.env };
    if (acwEnv != null) {
      env.CLAUDE_CODE_AUTO_COMPACT_WINDOW = String(acwEnv);
    } else {
      delete env.CLAUDE_CODE_AUTO_COMPACT_WINDOW;
    }

    let stdout = '';
    try {
      stdout = execFileSync(process.execPath, [hookPath], {
        input: payload,
        env,
        encoding: 'utf8',
        timeout: 4000,
      });
    } catch (e) {
      stdout = e.stdout || '';
    }

    // Strip ANSI escape codes then extract the percentage digit(s) before "%"
    // eslint-disable-next-line no-control-regex -- \x1b is the required leading byte of ANSI SGR sequences
    const clean = stdout.replace(/\x1b\[[0-9;]*m/g, '');
    const match = clean.match(/(\d+)%/);
    return match ? parseInt(match[1], 10) : null;
  }

  // acw == totalCtx - 1 (one token below total): buffer is near-zero (≈0%),
  // so the full window is usable. With 50% remaining the bar should show ~50%.
  test('acw = totalCtx - 1: used reflects actual remaining context (≈50%)', () => {
    const totalCtx = 1_000_000;
    const acw = totalCtx - 1; // 999999
    const used = runBoundaryHook(50, totalCtx, acw);
    // buffer ≈ 0% → usableRemaining ≈ 50% → used ≈ 50. Accept 49-51 for rounding.
    assert.ok(
      used !== null && used >= 49 && used <= 51,
      `expected used ≈ 50 when acw=totalCtx-1, got: ${used}`
    );
  });

  // acw == totalCtx (the triggering edge case): buffer should be 0%,
  // NOT 100%.  The "used" value must reflect real remaining context, not 100.
  test('acw = totalCtx: used MUST NOT stick at 100 (division-by-zero boundary)', () => {
    const totalCtx = 1_000_000;
    const acw = totalCtx; // 1000000
    const used = runBoundaryHook(50, totalCtx, acw);
    // Buffer = 0% → usableRemaining = 50% → used ≈ 50. Must not be 100.
    assert.ok(
      used !== null && used !== 100,
      `expected used != 100 when acw==totalCtx (div-by-zero boundary), got: ${used}`
    );
    // Also assert the bar is in a sane range (should be around 50%)
    assert.ok(
      used >= 0 && used <= 99,
      `expected used in 0-99 when acw==totalCtx, got: ${used}`
    );
  });

  // acw == totalCtx + 1 (exceeds total): buffer would be negative without a clamp;
  // the Math.max(0,...) clamp should keep buffer=0%, not a negative value.
  test('acw = totalCtx + 1: does not produce negative buffer (clamp prevents it)', () => {
    const totalCtx = 1_000_000;
    const acw = totalCtx + 1; // 1000001
    const used = runBoundaryHook(50, totalCtx, acw);
    // Buffer clamped to 0 → used ≈ 50 (reflects real remaining, not 100)
    assert.ok(
      used !== null && used !== 100,
      `expected used != 100 when acw=totalCtx+1, got: ${used}`
    );
    assert.ok(
      used >= 0 && used <= 99,
      `expected used in 0-99 when acw=totalCtx+1, got: ${used}`
    );
  });

  // Default path (no env var / acw==0): must be unchanged. 50% remaining → ~60%.
  test('acw = 0 (default path): unchanged, ~60% normalized for 50% remaining', () => {
    const used = runBoundaryHook(50, 1_000_000, 0);
    assert.strictEqual(used, 60, `default path must still produce 60, got: ${used}`);
  });

  // Normal partial value: 93% remaining → ~usesd ≈ 7% with default buffer.
  test('normal partial value: 93% remaining → ~7% normalized used', () => {
    // Default 16.5% buffer: usableRemaining = (93 - 16.5) / (100 - 16.5) * 100 = 91.6%
    // used ≈ 100 - 91.6 = 8.4 → rounded 8
    const used = runBoundaryHook(93, 1_000_000, null);
    assert.ok(
      used !== null && used >= 7 && used <= 10,
      `expected used ≈ 7-10 for 93% remaining with default buffer, got: ${used}`
    );
  });
});

// ─── todo-resolution path (#305) ────────────────────────────────────────────

describe('todo-resolution: resolves in_progress task from the newest matching todos file (#305)', () => {
  const { execFileSync } = require('node:child_process');
  const hookPath = path.join(__dirname, '..', 'hooks', 'gsd-statusline.js');

  test('resolves in_progress task from the newest matching todos file (#305)', (t) => {
    const tempDir = fs.mkdtempSync(path.join(os.tmpdir(), 'gsd-305-'));
    t.after(() => {
      cleanup(tempDir);
    });

    const todosDir = path.join(tempDir, 'todos');
    fs.mkdirSync(todosDir, { recursive: true });

    const session = `sess-305-${Math.random().toString(36).slice(2)}`;
    const now = Date.now() / 1000; // seconds for utimesSync

    // Older matching file — should NOT be selected
    const olderPath = path.join(todosDir, `${session}-agent-A.json`);
    fs.writeFileSync(olderPath, JSON.stringify([
      { content: 'old task', status: 'in_progress', activeForm: 'OLDER TASK 305' },
    ]));
    const olderTime = now - 10000;
    fs.utimesSync(olderPath, olderTime, olderTime);

    // Newer matching file — should be selected
    const newerPath = path.join(todosDir, `${session}-agent-B.json`);
    fs.writeFileSync(newerPath, JSON.stringify([
      { content: 'new task', status: 'in_progress', activeForm: 'NEWER TASK 305' },
    ]));
    const newerTime = now - 1000;
    fs.utimesSync(newerPath, newerTime, newerTime);

    // Distractor: different session prefix — must be ignored even with very-new mtime
    const wrongSessPath = path.join(todosDir, 'other-sess-agent-Z.json');
    fs.writeFileSync(wrongSessPath, JSON.stringify([
      { content: 'wrong session', status: 'in_progress', activeForm: 'WRONG SESSION 305' },
    ]));
    fs.utimesSync(wrongSessPath, now, now);

    // Distractor: matches session + .json but lacks -agent- — must be ignored
    const notAgentPath = path.join(todosDir, `${session}-notagent.json`);
    fs.writeFileSync(notAgentPath, JSON.stringify([
      { content: 'not agent', status: 'in_progress', activeForm: 'NOT AGENT 305' },
    ]));
    fs.utimesSync(notAgentPath, now, now);

    const payload = JSON.stringify({
      model: { display_name: 'Claude' },
      workspace: { current_dir: os.tmpdir() },
      session_id: session,
      context_window: { remaining_percentage: 80, total_tokens: 1_000_000 },
    });

    const env = { ...process.env, CLAUDE_CONFIG_DIR: tempDir };

    let stdout = '';
    try {
      stdout = execFileSync(process.execPath, [hookPath], {
        input: payload,
        env,
        encoding: 'utf8',
        timeout: 4000,
      });
    } catch (e) {
      stdout = e.stdout || '';
    }

    assert.ok(stdout.includes('NEWER TASK 305'),
      `expected stdout to contain "NEWER TASK 305", got: ${stdout}`);
    assert.ok(!stdout.includes('OLDER TASK 305'),
      `stdout must NOT contain "OLDER TASK 305", got: ${stdout}`);
    assert.ok(!stdout.includes('WRONG SESSION 305'),
      `stdout must NOT contain "WRONG SESSION 305", got: ${stdout}`);
    assert.ok(!stdout.includes('NOT AGENT 305'),
      `stdout must NOT contain "NOT AGENT 305", got: ${stdout}`);
  });
});


// ────────────────────────────────────────────────────────────────────────
// Folded from tests/enh-2538-statusline-last-command.test.cjs — consolidation epic #1969 (B5 #1974)
// ────────────────────────────────────────────────────────────────────────
{
  const { describe: __foldDescribe } = require('node:test');
  __foldDescribe("folded:enh-2538-statusline-last-command (consolidation epic #1969 B5 #1974)", () => {
'use strict';

/**
 * Enhancement #2538 — statusline `last: /cmd` suffix.
 *
 * Asserts that:
 *   - default (flag absent) output does NOT include "last:" text
 *   - with statusline.show_last_command=true AND a transcript containing
 *     <command-name>/gsd-plan-phase</command-name>, output includes "last: /gsd-plan-phase"
 *   - a missing transcript_path does not throw and produces no "last:" suffix
 *   - an existing transcript with no slash commands produces no "last:" suffix
 *   - the config key is registered in the schema so /gsd-settings can surface it
 */

const { test } = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');
const os = require('node:os');
const { cleanup } = require('./helpers.cjs');

const statusline = require('../hooks/gsd-statusline.js');
const { VALID_CONFIG_KEYS } = require('../gsd-core/bin/lib/config-schema.cjs');

function makeProject({ flag, transcript }) {
  const dir = fs.mkdtempSync(path.join(os.tmpdir(), 'enh-2538-'));
  fs.mkdirSync(path.join(dir, '.planning'), { recursive: true });
  if (flag !== undefined) {
    fs.writeFileSync(
      path.join(dir, '.planning', 'config.json'),
      JSON.stringify({ statusline: { show_last_command: flag } }),
    );
  }
  let transcriptPath = null;
  if (transcript !== undefined) {
    transcriptPath = path.join(dir, 'transcript.jsonl');
    fs.writeFileSync(transcriptPath, transcript);
  }
  return { dir, transcriptPath, cleanup: () => cleanup(dir) };
}

function buildInput(dir, transcriptPath) {
  return {
    model: { display_name: 'Claude' },
    workspace: { current_dir: dir },
    session_id: 'test-session',
    transcript_path: transcriptPath,
  };
}

test('config schema registers statusline.show_last_command', () => {
  assert.ok(
    VALID_CONFIG_KEYS.has('statusline.show_last_command'),
    'statusline.show_last_command must be in VALID_CONFIG_KEYS',
  );
});

test('default (flag absent) output has no "last:" suffix', () => {
  const transcript =
    JSON.stringify({ type: 'user', message: { content: '<command-name>/gsd-plan-phase</command-name>' } }) + '\n';
  const { dir, transcriptPath, cleanup } = makeProject({ transcript });
  try {
    const out = statusline.renderStatusline(buildInput(dir, transcriptPath));
    assert.ok(!out.includes('last:'), `expected no "last:" in output; got: ${out}`);
  } finally {
    cleanup();
  }
});

test('flag=true with recorded command yields "last: /<cmd>"', () => {
  const transcript =
    JSON.stringify({ type: 'user', message: { content: '<command-name>/gsd-plan-phase</command-name>' } }) + '\n' +
    JSON.stringify({ type: 'assistant', message: { content: 'ok' } }) + '\n';
  const { dir, transcriptPath, cleanup } = makeProject({ flag: true, transcript });
  try {
    const out = statusline.renderStatusline(buildInput(dir, transcriptPath));
    assert.ok(out.includes('last: /gsd-plan-phase'), `expected "last: /gsd-plan-phase" in output; got: ${out}`);
  } finally {
    cleanup();
  }
});

test('flag=true picks the MOST RECENT command when multiple are present', () => {
  const transcript =
    JSON.stringify({ type: 'user', message: { content: '<command-name>/gsd-discuss-phase</command-name>' } }) + '\n' +
    JSON.stringify({ type: 'user', message: { content: '<command-name>/gsd-plan-phase</command-name>' } }) + '\n' +
    JSON.stringify({ type: 'user', message: { content: '<command-name>/gsd-execute-phase</command-name>' } }) + '\n';
  const { dir, transcriptPath, cleanup } = makeProject({ flag: true, transcript });
  try {
    const out = statusline.renderStatusline(buildInput(dir, transcriptPath));
    assert.ok(out.includes('last: /gsd-execute-phase'), `expected most-recent "gsd-execute-phase"; got: ${out}`);
    assert.ok(!out.includes('last: /gsd-discuss-phase'), `should not show stale command; got: ${out}`);
  } finally {
    cleanup();
  }
});

test('flag=true with missing transcript_path does not throw and omits suffix', () => {
  const { dir, cleanup } = makeProject({ flag: true });
  try {
    let out;
    assert.doesNotThrow(() => {
      out = statusline.renderStatusline(buildInput(dir, undefined));
    });
    assert.ok(!out.includes('last:'), `expected no "last:" suffix when transcript missing; got: ${out}`);
  } finally {
    cleanup();
  }
});

test('flag=true with transcript lacking command tags omits suffix', () => {
  const transcript =
    JSON.stringify({ type: 'user', message: { content: 'just a plain prompt' } }) + '\n';
  const { dir, transcriptPath, cleanup } = makeProject({ flag: true, transcript });
  try {
    const out = statusline.renderStatusline(buildInput(dir, transcriptPath));
    assert.ok(!out.includes('last:'), `expected no "last:" suffix with no commands; got: ${out}`);
  } finally {
    cleanup();
  }
});

test('readLastSlashCommand returns null for nonexistent paths', () => {
  assert.strictEqual(statusline.readLastSlashCommand('/nonexistent/path.jsonl'), null);
  assert.strictEqual(statusline.readLastSlashCommand(null), null);
  assert.strictEqual(statusline.readLastSlashCommand(undefined), null);
});
  });
}


// ────────────────────────────────────────────────────────────────────────
// Folded from tests/enh-2833-phase-lifecycle-statusline.test.cjs — consolidation epic #1969 (B5 #1974)
// ────────────────────────────────────────────────────────────────────────
{
  const { describe: __foldDescribe } = require('node:test');
  __foldDescribe("folded:enh-2833-phase-lifecycle-statusline (consolidation epic #1969 B5 #1974)", () => {
/**
 * Tests for issue #2833 — phase-lifecycle status-line.
 *
 * Covers the additions made by the two preceding feat commits:
 *
 *   1. parseStateMd reads four new STATE.md frontmatter fields
 *      - active_phase
 *      - next_action
 *      - next_phases (YAML flow array)
 *      - progress (nested block: completed_phases / total_phases / percent)
 *
 *   2. formatGsdState renders three new scenes when those fields are populated
 *      - Scene 1: active_phase set         → "Phase X.Y <stage>"
 *      - Scene 2: idle + next_action set   → "next <action> <phases>"
 *      - Scene 3: percent 100 / all done   → "milestone complete"
 *      - Scene 4: default fallback         → unchanged "<status> · <phase>"
 *
 *   3. renderProgressBar() helper for the opt-in milestone bar.
 *
 *   4. Backward compatibility — existing STATE.md files (without any of the
 *      new fields) render byte-for-byte identically to v1.38.x.
 */

'use strict';

const { test, describe } = require('node:test');
const assert = require('node:assert/strict');

const {
  parseStateMd,
  formatGsdState,
} = require('../hooks/gsd-statusline.js');

// ─── parseStateMd: new lifecycle fields ─────────────────────────────────────

describe('parseStateMd #2833 lifecycle fields', () => {
  test('reads active_phase from frontmatter', () => {
    const content = [
      '---',
      'milestone: v2.0',
      'status: executing',
      'active_phase: "4.5"',
      '---',
    ].join('\n');
    const s = parseStateMd(content);
    assert.equal(s.activePhase, '4.5');
  });

  test('reads next_action from frontmatter', () => {
    const content = [
      '---',
      'milestone: v2.0',
      'next_action: execute-phase',
      '---',
    ].join('\n');
    const s = parseStateMd(content);
    assert.equal(s.nextAction, 'execute-phase');
  });

  test('treats "null" literal as null for active_phase and next_action', () => {
    const content = [
      '---',
      'active_phase: null',
      'next_action: null',
      '---',
    ].join('\n');
    const s = parseStateMd(content);
    assert.equal(s.activePhase, null);
    assert.equal(s.nextAction, null);
  });

  test('parses next_phases YAML flow array (single item)', () => {
    const content = [
      '---',
      'next_phases: ["4.5"]',
      '---',
    ].join('\n');
    const s = parseStateMd(content);
    assert.deepEqual(s.nextPhases, ['4.5']);
  });

  test('parses next_phases YAML flow array (multiple items)', () => {
    const content = [
      '---',
      'next_phases: ["4.5", "4.6", "5"]',
      '---',
    ].join('\n');
    const s = parseStateMd(content);
    assert.deepEqual(s.nextPhases, ['4.5', '4.6', '5']);
  });

  test('parses progress nested block — all three fields', () => {
    const content = [
      '---',
      'progress:',
      '  total_phases: 17',
      '  completed_phases: 10',
      '  percent: 59',
      '---',
    ].join('\n');
    const s = parseStateMd(content);
    assert.equal(s.totalPhases, '17');
    assert.equal(s.completedPhases, '10');
    assert.equal(s.percent, '59');
  });

  test('returns undefined for absent lifecycle fields', () => {
    const content = [
      '---',
      'milestone: v1.9',
      'status: executing',
      '---',
    ].join('\n');
    const s = parseStateMd(content);
    assert.equal(s.activePhase, undefined);
    assert.equal(s.nextAction, undefined);
    assert.equal(s.nextPhases, undefined);
    assert.equal(s.percent, undefined);
  });
});

// ─── formatGsdState: new scenes ─────────────────────────────────────────────

describe('formatGsdState #2833 lifecycle scenes', () => {
  test('Scene 1 — active_phase set renders "Phase X.Y <stage>"', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      status: 'executing',
      activePhase: '4.5',
      percent: '59',
    });
    assert.equal(out, 'v2.0 [█████░░░░░] 59% · Phase 4.5 executing');
  });

  test('Scene 1 — active_phase without status renders "Phase X.Y"', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      activePhase: '4.5',
    });
    assert.equal(out, 'v2.0 · Phase 4.5');
  });

  test('Scene 2 — idle + next_action renders "next <action> <phases>"', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      activePhase: null,
      nextAction: 'execute-phase',
      nextPhases: ['4.5'],
      percent: '59',
    });
    assert.equal(out, 'v2.0 [█████░░░░░] 59% · next execute-phase 4.5');
  });

  test('Scene 2 — multiple next_phases joined with /', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      nextAction: 'discuss-phase',
      nextPhases: ['4.7', '6.5'],
    });
    assert.equal(out, 'v2.0 · next discuss-phase 4.7/6.5');
  });

  test('Scene 3 — percent=100 renders "milestone complete"', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      percent: '100',
    });
    assert.equal(out, 'v2.0 [██████████] 100% · milestone complete');
  });

  test('Scene 3 — completed_phases equals total_phases also triggers complete', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      completedPhases: '17',
      totalPhases: '17',
    });
    assert.equal(out, 'v2.0 · milestone complete');
  });
});

// ─── Backward compatibility — CRITICAL: existing STATE.md unchanged ─────────

describe('formatGsdState #2833 backward compatibility', () => {
  test('legacy STATE.md (only status + milestone + phase) renders unchanged', () => {
    // Identical to the format documented in #1989 (the foundation issue).
    // No new lifecycle fields populated → must render exactly as v1.38.x did.
    const out = formatGsdState({
      status: 'executing',
      milestone: 'v1.9',
      milestoneName: 'Code Quality',
      phaseNum: '1',
      phaseTotal: '5',
      phaseName: 'fix-graphiti-deployment',
    });
    assert.equal(out, 'v1.9 Code Quality · executing · fix-graphiti-deployment (1/5)');
  });

  test('only status set (no phase, no lifecycle fields) renders just "<milestone> · <status>"', () => {
    const out = formatGsdState({
      milestone: 'v1.9',
      status: 'executing',
    });
    assert.equal(out, 'v1.9 · executing');
  });

  test('empty state renders empty string', () => {
    const out = formatGsdState({});
    assert.equal(out, '');
  });

  test('progress.percent is opt-in — absent percent leaves milestone segment unchanged', () => {
    const out = formatGsdState({
      milestone: 'v1.9',
      milestoneName: 'Code Quality',
      status: 'executing',
    });
    // No bar rendered when percent is absent.
    assert.equal(out, 'v1.9 Code Quality · executing');
  });
});

// ─── renderProgressBar (exported indirectly via formatGsdState behavior) ────

describe('progress bar rendering', () => {
  test('0% renders 10 empty segments', () => {
    // percent=0 doesn't trigger Scene 3 (only percent='100' does), so
    // Scene 4 fallback fires with no extra parts — just milestone + bar.
    const out = formatGsdState({ milestone: 'v2.0', percent: '0' });
    assert.ok(out.includes('[░░░░░░░░░░] 0%'));
  });

  test('50% renders 5 filled + 5 empty', () => {
    const out = formatGsdState({ milestone: 'v2.0', percent: '50' });
    assert.ok(out.includes('[█████░░░░░] 50%'));
  });

  test('100% renders 10 filled (and triggers Scene 3)', () => {
    const out = formatGsdState({ milestone: 'v2.0', percent: '100' });
    assert.equal(out, 'v2.0 [██████████] 100% · milestone complete');
  });

  test('percent absent → no bar rendered (opt-in)', () => {
    const out = formatGsdState({ milestone: 'v2.0', status: 'executing' });
    assert.ok(!out.includes('['));
    assert.ok(!out.includes('░'));
    assert.ok(!out.includes('█'));
  });

  test('percent over 100 clamps to 100', () => {
    const out = formatGsdState({ milestone: 'v2.0', percent: '150' });
    assert.ok(out.includes('[██████████] 100%'));
  });

  test('percent below 0 clamps to 0', () => {
    const out = formatGsdState({ milestone: 'v2.0', percent: '-10' });
    assert.ok(out.includes('[░░░░░░░░░░] 0%'));
  });
});

// ─── Scene priority — first-match-wins guarantee ────────────────────────────

describe('formatGsdState #2833 scene priority', () => {
  test('active_phase wins over next_action when both populated', () => {
    // active_phase populated should win — orchestrator is in flight,
    // any "next" recommendation would be misleading.
    const out = formatGsdState({
      milestone: 'v2.0',
      status: 'executing',
      activePhase: '4.5',
      nextAction: 'execute-phase',
      nextPhases: ['4.5'],
    });
    assert.ok(out.includes('Phase 4.5 executing'));
    assert.ok(!out.includes('next execute-phase'));
  });

  test('next_action wins over Scene 4 fallback when active_phase null', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      status: 'in_progress',  // would be Scene 4 fallback alone
      activePhase: null,
      nextAction: 'execute-phase',
      nextPhases: ['4.5'],
      phaseNum: '1',
      phaseTotal: '5',
    });
    assert.ok(out.includes('next execute-phase 4.5'));
    assert.ok(!out.includes('in_progress'));
    assert.ok(!out.includes('1/5'));
  });

  test('percent=100 wins over Scene 4 even with phase set', () => {
    const out = formatGsdState({
      milestone: 'v2.0',
      percent: '100',
      phaseNum: '1',
      phaseTotal: '5',
    });
    assert.ok(out.includes('milestone complete'));
    assert.ok(!out.includes('1/5'));
  });
});
  });
}


// ────────────────────────────────────────────────────────────────────────
// Folded from tests/enh-2937-statusline-context-position.test.cjs — consolidation epic #1969 (B5 #1974)
// ────────────────────────────────────────────────────────────────────────
{
  const { describe: __foldDescribe } = require('node:test');
  __foldDescribe("folded:enh-2937-statusline-context-position (consolidation epic #1969 B5 #1974)", () => {
'use strict';

/**
 * Enhancement #2937 — statusline opt-in `context_position` config.
 *
 * Asserts that:
 *   - VALID_CONFIG_KEYS registers statusline.context_position (parity guard)
 *   - Default (no config) renders ctx at tail — "end" layout
 *   - Explicit "end" is byte-identical to default (regression guard)
 *   - Explicit "front" puts ctx after model, before first " │ "
 *   - Empty ctx with "front" leaves no stray separator
 *   - Invalid value (e.g. "middle") silently falls back to "end" at runtime
 *   - gsdUpdate warning stays leftmost in both "front" and "end" modes
 */

const { test } = require('node:test');
const assert = require('node:assert/strict');

const { composeStatusline } = require('../hooks/gsd-statusline.js');
const { VALID_CONFIG_KEYS } = require('../gsd-core/bin/lib/config-schema.cjs');
const { runGsdTools, createTempProject, cleanup } = require('./helpers.cjs');

// ── Parity guard ─────────────────────────────────────────────────────────────

test('config schema registers statusline.context_position', () => {
  assert.ok(
    VALID_CONFIG_KEYS.has('statusline.context_position'),
    'statusline.context_position must be in VALID_CONFIG_KEYS',
  );
});

// ── Default / "end" layout ───────────────────────────────────────────────────

test('default (no position arg) renders ctx at tail — end layout', () => {
  const ctx = ' \x1b[32m████░░░░░░ 40%\x1b[0m';
  const out = composeStatusline({ model: 'Claude', dirname: 'myproject', ctx });
  // ctx should appear after dirname, not before first │
  const dirIdx = out.indexOf('myproject');
  const ctxIdx = out.indexOf(ctx);
  assert.ok(ctxIdx > dirIdx, `ctx should be after dirname; got: ${out}`);
});

test('explicit "end" is byte-identical to default', () => {
  const ctx = ' \x1b[32m████░░░░░░ 40%\x1b[0m';
  const args = { model: 'Claude', dirname: 'myproject', ctx };
  const defaultOut = composeStatusline(args);
  const endOut = composeStatusline({ ...args, position: 'end' });
  assert.strictEqual(endOut, defaultOut, 'explicit "end" must equal default output');
});

test('"end" with middle segment places ctx after dirname', () => {
  const ctx = ' \x1b[32m████░░░░░░ 40%\x1b[0m';
  const out = composeStatusline({ model: 'Claude', ctx, middle: 'doing work', dirname: 'proj', position: 'end' });
  const dirIdx = out.indexOf('proj');
  const ctxIdx = out.indexOf(ctx);
  assert.ok(ctxIdx > dirIdx, `ctx should be after dirname in end mode; got: ${out}`);
});

// ── "front" layout ───────────────────────────────────────────────────────────

test('"front" puts ctx after model name, before first │', () => {
  const ctx = ' \x1b[32m████░░░░░░ 40%\x1b[0m';
  const out = composeStatusline({ model: 'Claude', dirname: 'myproject', ctx, position: 'front' });
  const firstPipe = out.indexOf(' │ ');
  const ctxIdx = out.indexOf(ctx);
  assert.ok(ctxIdx !== -1, `ctx should appear in output; got: ${out}`);
  assert.ok(ctxIdx < firstPipe, `ctx should come before first │ in front mode; got: ${out}`);
});

test('"front" with middle segment: ctx after model, before first │', () => {
  const ctx = ' \x1b[32m████░░░░░░ 40%\x1b[0m';
  const out = composeStatusline({ model: 'Claude', ctx, middle: 'doing work', dirname: 'proj', position: 'front' });
  const firstPipe = out.indexOf(' │ ');
  const ctxIdx = out.indexOf(ctx);
  assert.ok(ctxIdx < firstPipe, `ctx must precede first │; got: ${out}`);
});

// ── Empty ctx ────────────────────────────────────────────────────────────────

test('empty ctx + "front" renders no stray separator', () => {
  const out = composeStatusline({ model: 'Claude', dirname: 'myproject', ctx: '', position: 'front' });
  // Should not have double-separator or leading │
  assert.ok(!out.includes(' │  │ '), `stray separator found; got: ${out}`);
  // Should still contain the single separator between model area and dirname
  assert.ok(out.includes(' │ '), `expected at least one separator; got: ${out}`);
});

test('empty ctx + "end" renders no stray separator', () => {
  const out = composeStatusline({ model: 'Claude', dirname: 'myproject', ctx: '', position: 'end' });
  assert.ok(!out.includes(' │  │ '), `stray separator found; got: ${out}`);
});

// ── Invalid value fallback ───────────────────────────────────────────────────

test('invalid position value silently falls back to "end" layout', () => {
  const ctx = ' \x1b[32m████░░░░░░ 40%\x1b[0m';
  const invalid = composeStatusline({ model: 'Claude', dirname: 'myproject', ctx, position: 'middle' });
  const end = composeStatusline({ model: 'Claude', dirname: 'myproject', ctx, position: 'end' });
  assert.strictEqual(invalid, end, `invalid position should produce same output as "end"; got: ${invalid}`);
});

test('invalid position "banana" silently falls back to "end"', () => {
  const ctx = ' \x1b[33m██████░░░░ 60%\x1b[0m';
  const invalid = composeStatusline({ model: 'Claude', dirname: 'proj', ctx, position: 'banana' });
  const end = composeStatusline({ model: 'Claude', dirname: 'proj', ctx, position: 'end' });
  assert.strictEqual(invalid, end, `invalid "banana" should fall back to "end"; got: ${invalid}`);
});

// ── gsdUpdate leftmost invariant ─────────────────────────────────────────────

test('gsdUpdate warning is leftmost in "end" mode', () => {
  const gsdUpdate = '\x1b[33m⬆ /gsd:update\x1b[0m │ ';
  const out = composeStatusline({ gsdUpdate, model: 'Claude', dirname: 'proj', position: 'end' });
  assert.ok(out.startsWith(gsdUpdate), `gsdUpdate should be leftmost in end mode; got: ${out}`);
});

test('gsdUpdate warning is leftmost in "front" mode', () => {
  const gsdUpdate = '\x1b[33m⬆ /gsd:update\x1b[0m │ ';
  const ctx = ' \x1b[32m████░░░░░░ 40%\x1b[0m';
  const out = composeStatusline({ gsdUpdate, model: 'Claude', dirname: 'proj', ctx, position: 'front' });
  assert.ok(out.startsWith(gsdUpdate), `gsdUpdate should be leftmost in front mode; got: ${out}`);
});

// ── CLI write-path enforcement (config-set rejects invalid enum) ─────────────
// Locked design: hard reject at config-set time AND silent fallback at runtime.
// The runtime fallback is covered by the "Invalid position value silently falls
// back" tests above. This test covers the other half — that the CLI write path
// actually refuses to persist an invalid value in the first place.

test('config-set rejects invalid statusline.context_position', () => {
  const tmpDir = createTempProject();
  try {
    const r = runGsdTools(
      ['config-set', 'statusline.context_position', 'middle'],
      tmpDir,
    );
    assert.equal(
      r.success,
      false,
      `config-set should exit non-zero on invalid enum; got success=${r.success}, output=${r.output}`,
    );
    assert.ok(
      /statusline\.context_position|Invalid/i.test(r.error),
      `stderr must reference key or "Invalid"; got: ${r.error}`,
    );
  } finally {
    cleanup(tmpDir);
  }
});
  });
}