'use strict';

// allow-test-rule: source-text-is-the-product
// Reads .md/.json/.yml product files whose deployed text IS what the
// runtime loads — testing text content tests the deployed contract.

/**
 * Tests for /gsd-edit-phase (#2617)
 *
 * Covers:
 *  - Command file and workflow file existence
 *  - Single-field edit instructions
 *  - Full-phase regeneration from clarified intent
 *  - Invalid depends_on blocks with clear error
 *  - Guarded edit of in_progress phase without --force
 *  - --force override of status guard
 *  - Invalid phase number produces clear error
 *  - Diff + confirmation before writing
 *  - Phase number and position are preserved
 */

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

const ROOT = path.resolve(__dirname, '..');

// #2790: edit-phase.md was consolidated into phase.md as the --edit flag.
// The COMMAND_PATH here now points to the consolidated command.
const COMMAND_PATH = path.join(ROOT, 'commands', 'gsd', 'phase.md');
const WORKFLOW_PATH = path.join(ROOT, 'gsd-core', 'workflows', 'edit-phase.md');

// ─── File existence ──────────────────────────────────────────────────────────

describe('edit-phase: file existence', () => {
  test('commands/gsd/phase.md exists (absorbed edit-phase in #2790)', () => {
    assert.ok(fs.existsSync(COMMAND_PATH), 'commands/gsd/phase.md should exist (consolidates edit-phase)');
  });

  test('gsd-core/workflows/edit-phase.md exists', () => {
    assert.ok(fs.existsSync(WORKFLOW_PATH), 'gsd-core/workflows/edit-phase.md should exist');
  });
});

// ─── Command file structure ───────────────────────────────────────────────────

describe('edit-phase: command file structure', () => {
  test('consolidated phase.md has correct name frontmatter (#2790)', () => {
    const content = fs.readFileSync(COMMAND_PATH, 'utf-8');
    assert.ok(/^name:\s*gsd:phase/m.test(content), 'name should be gsd:phase (consolidated)');
  });

  test('command file has description frontmatter', () => {
    const content = fs.readFileSync(COMMAND_PATH, 'utf-8');
    assert.ok(/^description:/m.test(content), 'should have description frontmatter');
  });

  test('command file references edit-phase workflow', () => {
    const content = fs.readFileSync(COMMAND_PATH, 'utf-8');
    assert.ok(
      content.includes('edit-phase.md'),
      'command file should reference edit-phase workflow'
    );
  });

  test('command file documents --force flag (passed through --edit)', () => {
    const content = fs.readFileSync(COMMAND_PATH, 'utf-8');
    assert.ok(content.includes('--edit') || content.includes('--force'), 'command file should document --edit flag (which supports --force)');
  });
});

// ─── Workflow: single-field edit ─────────────────────────────────────────────

describe('edit-phase workflow: single-field edit', () => {
  test('workflow instructs presenting current field values before editing', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const showsCurrentValues = (
      /current\s+value/i.test(content) ||
      /present.*current/i.test(content) ||
      /display.*current/i.test(content) ||
      /current_value/i.test(content)
    );
    assert.ok(showsCurrentValues, 'workflow must present current field values before editing');
  });

  test('workflow supports editing specific fields individually', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const supportsIndividualFields = (
      /specific\s+field/i.test(content) ||
      /individual\s+field/i.test(content) ||
      /edit.*field/i.test(content)
    );
    assert.ok(supportsIndividualFields, 'workflow must support editing individual fields');
  });

  test('workflow covers title, goal, depends_on, requirements, success_criteria fields', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    assert.ok(/\btitle\b/i.test(content), 'workflow should mention title field');
    assert.ok(/\bgoal\b/i.test(content), 'workflow should mention goal field');
    assert.ok(/depends_on/i.test(content), 'workflow should mention depends_on field');
    assert.ok(/requirements/i.test(content), 'workflow should mention requirements field');
    assert.ok(/success_criteria/i.test(content), 'workflow should mention success_criteria field');
  });
});

// ─── Workflow: full-phase regeneration ───────────────────────────────────────

describe('edit-phase workflow: full-phase regeneration', () => {
  test('workflow supports regenerating all fields from clarified intent', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const supportsRegen = (
      /regenerate/i.test(content) ||
      /rewrite.*all/i.test(content) ||
      /all.*from.*clarified/i.test(content) ||
      /clarified.*intent/i.test(content)
    );
    assert.ok(supportsRegen, 'workflow must support full regeneration from clarified intent');
  });

  test('workflow prompts user for clarified intent during full regeneration', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const promptsClarifiedIntent = (
      /clarified?\s+intent/i.test(content) ||
      /revised\s+intent/i.test(content) ||
      /describe.*revised/i.test(content)
    );
    assert.ok(
      promptsClarifiedIntent,
      'workflow must prompt user for clarified intent during full regeneration'
    );
  });
});

// ─── Workflow: invalid depends_on ────────────────────────────────────────────

describe('edit-phase workflow: depends_on validation', () => {
  test('workflow validates depends_on references against existing phases', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const validatesDepends = (
      /validate.*depends/i.test(content) ||
      /depends.*valid/i.test(content) ||
      /invalid.*depends/i.test(content) ||
      /depends_on.*valid/i.test(content)
    );
    assert.ok(validatesDepends, 'workflow must validate depends_on references');
  });

  test('workflow blocks write when depends_on references invalid phase', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const blocksInvalidRef = (
      /invalid.*phase/i.test(content) &&
      /exit|block|error/i.test(content)
    );
    assert.ok(blocksInvalidRef, 'workflow must block write for invalid depends_on references');
  });

  test('workflow validates that depends_on does not reference the phase itself', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const preventsCircular = (
      /not reference itself/i.test(content) ||
      /circular/i.test(content) ||
      /self-reference/i.test(content) ||
      /itself/i.test(content)
    );
    assert.ok(preventsCircular, 'workflow must prevent self-referencing depends_on');
  });
});

// ─── Workflow: status guard ───────────────────────────────────────────────────

describe('edit-phase workflow: in-progress/completed status guard', () => {
  test('workflow checks phase status before allowing edit', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const checksStatus = (
      /disk_status/i.test(content) ||
      /phase.*status/i.test(content) ||
      /status.*check/i.test(content)
    );
    assert.ok(checksStatus, 'workflow must check phase status before allowing edit');
  });

  test('workflow refuses to edit in_progress phases without --force', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const refusesInProgress = (
      /in.progress/i.test(content) &&
      /--force/i.test(content)
    );
    assert.ok(refusesInProgress, 'workflow must refuse in_progress edits without --force');
  });

  test('workflow refuses to edit completed phases without --force', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const refusesCompleted = (
      /completed/i.test(content) &&
      /--force/i.test(content)
    );
    assert.ok(refusesCompleted, 'workflow must refuse completed phase edits without --force');
  });

  test('workflow allows edit with --force flag override', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const forcePath = content.match(/--force[\s\S]{0,300}/i);
    assert.ok(forcePath, 'workflow must handle --force flag');
    const forceSection = forcePath[0];
    const allowsForce = (
      /proceed|continue|allow|override/i.test(forceSection) ||
      /force.*was.*passed/i.test(content) ||
      /force.*passed/i.test(content)
    );
    assert.ok(allowsForce, 'workflow must allow editing when --force is passed');
  });
});

// ─── Workflow: invalid phase number ──────────────────────────────────────────

describe('edit-phase workflow: invalid phase number', () => {
  test('workflow produces clear error when phase number does not exist', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const handlesNotFound = (
      /not.*found/i.test(content) ||
      /phase.*not.*found/i.test(content) ||
      /does not exist/i.test(content)
    );
    assert.ok(handlesNotFound, 'workflow must error clearly when phase number does not exist');
  });

  test('workflow errors on missing phase number argument', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const handlesNoArg = (
      /no.*argument/i.test(content) ||
      /required/i.test(content) ||
      /phase number required/i.test(content)
    );
    assert.ok(handlesNoArg, 'workflow must error when phase number argument is missing');
  });
});

// ─── Workflow: diff + confirmation ───────────────────────────────────────────

describe('edit-phase workflow: diff and confirmation', () => {
  test('workflow shows diff of changes before writing', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const showsDiff = (
      /diff/i.test(content) ||
      /proposed.*change/i.test(content) ||
      /show.*change/i.test(content)
    );
    assert.ok(showsDiff, 'workflow must show a diff of changes before writing');
  });

  test('workflow asks for confirmation before writing', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const asksConfirmation = (
      /confirm/i.test(content) ||
      /apply.*change/i.test(content) ||
      /y\/n/i.test(content) ||
      /yes.*no/i.test(content)
    );
    assert.ok(asksConfirmation, 'workflow must ask for confirmation before writing');
  });

  test('workflow exits without writing if user declines', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const handlesDecline = (
      /says.*n/i.test(content) ||
      /user says.*n/i.test(content) ||
      /if.*user.*n/i.test(content) ||
      /exit.*without.*writing/i.test(content) ||
      /without writing/i.test(content)
    );
    assert.ok(handlesDecline, 'workflow must exit without writing if user declines confirmation');
  });
});

// ─── Workflow: phase number and position preservation ────────────────────────

describe('edit-phase workflow: phase number and position preservation', () => {
  test('workflow preserves phase number when writing back', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const preservesNumber = (
      /number.*preserved/i.test(content) ||
      /preserve.*number/i.test(content) ||
      /position.*preserved/i.test(content) ||
      /number and position/i.test(content)
    );
    assert.ok(preservesNumber, 'workflow must preserve phase number and position');
  });

  test('anti_patterns block renumbering', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    // eslint-disable-next-line local/no-unbounded-quantifier -- parses this repo's own workflow .md content, fixed-size author-controlled content
    const antiPatterns = content.match(/<anti_patterns>([\s\S]*?)<\/anti_patterns>/i);
    assert.ok(antiPatterns, 'workflow should have anti_patterns section');
    assert.ok(
      /renumber|number.*preserved|preserve.*number/i.test(antiPatterns[1]),
      'anti_patterns must prohibit renumbering'
    );
  });

  test('workflow writes phase back in place (replaces section, not full file)', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const inPlace = (
      /in.*place/i.test(content) ||
      /replace.*section/i.test(content) ||
      /section.*replace/i.test(content) ||
      /replace.*old.*section/i.test(content)
    );
    assert.ok(inPlace, 'workflow must write phase back in place (section replacement)');
  });
});

// ─── Workflow: milestone scope guard (#3262) ─────────────────────────────────

describe('edit-phase workflow: milestone scope guard (#3262)', () => {
  test('workflow captures the milestone scope before writing the updated phase', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    // eslint-disable-next-line local/no-unbounded-quantifier -- parses this repo's own workflow .md content, fixed-size author-controlled content
    const writeStep = content.match(/<step name="write_updated_phase">([\s\S]*?)<\/step>/);
    assert.ok(writeStep, 'write_updated_phase step must exist');
    assert.match(
      writeStep[1],
      /milestone-scope/,
      'write_updated_phase must run the roadmap milestone-scope probe before writing'
    );
    assert.match(writeStep[1], /SCOPE_BEFORE/i, 'the pre-write capture must be named for the post-write comparison');
  });

  test('workflow re-derives the milestone scope after the write and rolls back on mismatch', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    // eslint-disable-next-line local/no-unbounded-quantifier -- parses this repo's own workflow .md content, fixed-size author-controlled content
    const writeStep = content.match(/<step name="write_updated_phase">([\s\S]*?)<\/step>/);
    assert.ok(writeStep, 'write_updated_phase step must exist');
    assert.match(writeStep[1], /SCOPE_AFTER/i, 'the post-write re-derivation must be present');
    assert.match(writeStep[1], /scope|phases/i, 'the comparison must cover the scope and the phase set');
    assert.match(
      writeStep[1],
      /rollback|restore|revert|rolled back/i,
      'a scope or phase-set mismatch must trigger rollback'
    );
    assert.match(
      writeStep[1],
      /milestone scope changed|scope changed/i,
      'the rollback path must surface an explicit error'
    );
  });

  test('milestone scope guard success criterion is checked (#3262)', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    // eslint-disable-next-line local/no-unbounded-quantifier -- parses this repo's own workflow .md content, fixed-size author-controlled content
    const criteria = content.match(/<success_criteria>([\s\S]*?)<\/success_criteria>/);
    assert.ok(criteria, 'workflow should have a success_criteria section');
    assert.match(
      criteria[1],
      /milestone scope/i,
      'success criteria must include the milestone-scope verification'
    );
  });
});

// ─── Workflow: STATE.md update ────────────────────────────────────────────────

describe('edit-phase workflow: STATE.md roadmap evolution', () => {
  test('workflow updates STATE.md Roadmap Evolution after edit', () => {
    const content = fs.readFileSync(WORKFLOW_PATH, 'utf-8');
    const updatesState = (
      /state\.add-roadmap-evolution/i.test(content) ||
      /Roadmap Evolution/i.test(content)
    );
    assert.ok(updatesState, 'workflow must update STATE.md Roadmap Evolution after edit');
  });
});

// ─── Docs registration ────────────────────────────────────────────────────────

describe('edit-phase: documentation registration', () => {
  test('INVENTORY.md routes edit-phase workflow through consolidated /gsd-phase --edit (#2790)', () => {
    // #2790 absorbed /gsd-edit-phase into /gsd-phase as the --edit flag. The
    // workflow file (edit-phase.md) survives, but its "Invoked by" column must
    // point at the consolidated command surface, not the deleted standalone.
    const inventory = fs.readFileSync(
      path.join(ROOT, 'docs', 'INVENTORY.md'),
      'utf-8'
    );
    // Locate the edit-phase.md row in the Workflows table and assert the
    // "Invoked by" column documents /gsd-phase --edit (not the deleted form).
    // eslint-disable-next-line local/no-unbounded-quantifier -- parses maintainer-authored docs/INVENTORY.md, bounded table rows, not adversarial input
    const rowMatch = inventory.match(/^\|\s*`edit-phase\.md`\s*\|[^|]*\|\s*([^|]+?)\s*\|$/m);
    assert.ok(rowMatch, 'docs/INVENTORY.md must contain an edit-phase.md workflow row');
    const invokedBy = rowMatch[1];
    assert.ok(
      /\/gsd-phase\s+--edit/.test(invokedBy),
      `edit-phase.md row must list "/gsd-phase --edit" as caller; got: "${invokedBy}"`
    );
    assert.ok(
      !/\/gsd-edit-phase\b/.test(invokedBy),
      `edit-phase.md row must not still cite the deleted /gsd-edit-phase command; got: "${invokedBy}"`
    );
  });

  test('INVENTORY.md contains edit-phase.md workflow', () => {
    const inventory = fs.readFileSync(
      path.join(ROOT, 'docs', 'INVENTORY.md'),
      'utf-8'
    );
    assert.ok(
      inventory.includes('edit-phase.md'),
      'docs/INVENTORY.md must contain edit-phase.md workflow row'
    );
  });

  test('INVENTORY-MANIFEST.json contains /gsd-phase in commands (#2790: edit-phase absorbed into phase.md)', () => {
    // #2790: /gsd-edit-phase was absorbed into /gsd-phase as the --edit flag.
    // The manifest now records /gsd-phase instead of /gsd-edit-phase.
    const manifest = JSON.parse(
      fs.readFileSync(path.join(ROOT, 'docs', 'INVENTORY-MANIFEST.json'), 'utf-8')
    );
    assert.ok(
      manifest.families.commands.includes('/gsd-phase'),
      'INVENTORY-MANIFEST.json must list /gsd-phase in commands (absorbed /gsd-edit-phase via #2790)'
    );
  });

  test('INVENTORY-MANIFEST.json contains edit-phase.md in workflows', () => {
    const manifest = JSON.parse(
      fs.readFileSync(path.join(ROOT, 'docs', 'INVENTORY-MANIFEST.json'), 'utf-8')
    );
    assert.ok(
      manifest.families.workflows.includes('edit-phase.md'),
      'INVENTORY-MANIFEST.json must list edit-phase.md in workflows'
    );
  });

  test('docs/COMMANDS.md documents /gsd-phase (absorbed /gsd-edit-phase via --edit flag, #2790)', () => {
    const commands = fs.readFileSync(
      path.join(ROOT, 'docs', 'COMMANDS.md'),
      'utf-8'
    );
    assert.ok(
      commands.includes('/gsd-phase'),
      'docs/COMMANDS.md must document /gsd-phase (which absorbed /gsd-edit-phase via --edit flag in #2790)'
    );
  });
});