import assert from 'node:assert/strict'
import { spawnSync } from 'node:child_process'
import { existsSync, lstatSync, mkdirSync, readFileSync } from 'node:fs'
import { dirname, join } from 'node:path'
import test from 'node:test'
import { fileURLToPath, pathToFileURL } from 'node:url'
import { cleanup, git, tempDir, write } from './helpers.mjs'

const here = dirname(fileURLToPath(import.meta.url))
const script = join(here, '..', 'install.sh')

test('install.sh copies skills and roles instead of linking into ~/.claude', () => {
  const home = tempDir()
  try {
    const dshHome = join(home, '.dsh')
    const cache = join(
      home,
      '.claude',
      'plugins',
      'cache',
      'claude-plugins-official',
      'superpowers',
      '7.0.0',
      'skills',
    )
    write(join(cache, 'using-superpowers', 'SKILL.md'), '---\nname: using-superpowers\n---\nbody\n')
    write(join(cache, 'brainstorming', 'SKILL.md'), '---\nname: brainstorming\n---\nbody\n')

    const env = {
      ...process.env,
      HOME: home,
      DSH_HOME: dshHome,
      DSH_SUPERPOWERS_REPO: join(home, 'no-superpowers-repo'),
    }
    const run = () => spawnSync('bash', [script, '--skills', '--roles'], { env, encoding: 'utf8' })

    const first = run()
    assert.equal(first.status, 0, first.stderr)
    assert.match(first.stdout, /copied 2 superpowers skills/)
    assert.match(first.stdout, /copied 2 local skills/)
    assert.match(first.stdout, /installed 4 roles/)

    const skill = join(dshHome, 'skills', 'using-superpowers')
    assert.equal(lstatSync(skill).isSymbolicLink(), false)
    assert.equal(lstatSync(skill).isDirectory(), true)
    assert.match(readFileSync(join(skill, 'SKILL.md'), 'utf8'), /body/)

    const roleSkill = join(dshHome, 'skills', 'role', 'SKILL.md')
    assert.ok(existsSync(roleSkill), 'role skill was not installed')
    assert.match(readFileSync(roleSkill, 'utf8'), /name: role/)

    const sddSkill = join(dshHome, 'skills', 'sdd', 'SKILL.md')
    assert.ok(existsSync(sddSkill), 'sdd skill was not installed')
    assert.match(readFileSync(sddSkill, 'utf8'), /name: sdd/)

    for (const role of ['dev', 'admin', 'analyst', 'qa']) {
      assert.ok(existsSync(join(dshHome, 'roles', `${role}.md`)), `missing ${role}.md`)
    }

    const devRole = join(dshHome, 'roles', 'dev.md')
    const devText = readFileSync(devRole, 'utf8')
    assert.match(devText, /В DSH-сессии исполнение плана идёт по skill `sdd`/)
    assert.match(devText, /`maxDepth: 2`/)
    assert.match(first.stdout, /role dsh notes/)
    assert.equal(countNotes(devText), 1, 'note must be inserted once')

    const second = run()
    assert.equal(second.status, 0, second.stderr)
    assert.equal(lstatSync(skill).isSymbolicLink(), false)
    assert.ok(existsSync(roleSkill))
    assert.match(second.stdout, /role dsh notes/)
    assert.equal(countNotes(readFileSync(devRole, 'utf8')), 1, 'note must not duplicate')

    const check = spawnSync('bash', [script, '--check'], { env, encoding: 'utf8' })
    assert.match(check.stdout, /ok: role dsh notes/)
  } finally {
    cleanup(home)
  }
})

function countNotes(text) {
  return (text.match(/В DSH-сессии исполнение плана/g) ?? []).length
}

function makeSuperpowers(root, body = 'body') {
  for (const name of ['using-superpowers', 'brainstorming']) {
    write(join(root, 'skills', name, 'SKILL.md'), `---\nname: ${name}\n---\n${body}\n`)
  }
  return root
}

function makeLegacyCache(home) {
  const root = join(home, '.claude', 'plugins', 'cache', 'claude-plugins-official', 'superpowers', '7.0.0')
  makeSuperpowers(root)
  return join(root, 'skills')
}

function installerEnv(home) {
  const env = { ...process.env, HOME: home, DSH_HOME: join(home, '.dsh') }
  delete env.DSH_SUPERPOWERS_SOURCE
  delete env.DSH_SUPERPOWERS_REPO
  // No test may reach GitHub: the git source defaults to a path that does not
  // exist, and git tests opt in with a file:// fixture.
  env.DSH_SUPERPOWERS_REPO = join(home, 'no-superpowers-repo')
  return env
}

function makeSuperpowersRepo(home, name = 'superpowers-src') {
  const repo = join(home, name)
  mkdirSync(repo, { recursive: true })
  git(repo, ['init', '-b', 'main'])
  git(repo, ['config', 'user.email', 'test@example.invalid'])
  git(repo, ['config', 'user.name', 'Test'])
  makeSuperpowers(repo)
  git(repo, ['add', '.'])
  git(repo, ['commit', '-m', 'init'])
  return repo
}

function gitUrl(repo) {
  return pathToFileURL(repo).href
}

function runInstaller(home, args, extraEnv = {}) {
  return spawnSync('bash', [script, ...args], {
    env: { ...installerEnv(home), ...extraEnv },
    encoding: 'utf8',
  })
}

test('--skills takes superpowers from --superpowers-from in a clean HOME', () => {
  const home = tempDir()
  try {
    const src = makeSuperpowers(join(home, 'src', 'superpowers'))
    const run = runInstaller(home, ['--skills', '--superpowers-from', src])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 0, out)
    assert.match(run.stdout, /copied 2 superpowers skills/)
    assert.ok(run.stdout.includes(`source: ${join(src, 'skills')}`), out)
    assert.ok(existsSync(join(home, '.dsh', 'skills', 'using-superpowers', 'SKILL.md')))
    assert.ok(existsSync(join(home, '.dsh', 'skills', 'role', 'SKILL.md')))
    assert.ok(existsSync(join(home, '.dsh', 'skills', 'sdd', 'SKILL.md')))
    assert.equal(existsSync(join(home, '.claude')), false, 'clean HOME must stay clean')
    assert.doesNotMatch(out, /legacy/)
  } finally {
    cleanup(home)
  }
})

test('--superpowers-from accepts the skills directory itself', () => {
  const home = tempDir()
  try {
    const src = makeSuperpowers(join(home, 'src', 'superpowers'))
    const run = runInstaller(home, ['--skills', '--superpowers-from', join(src, 'skills')])
    assert.equal(run.status, 0, run.stdout + run.stderr)
    assert.match(run.stdout, /copied 2 superpowers skills/)
  } finally {
    cleanup(home)
  }
})

test('--superpowers-from accepts a path with spaces', () => {
  const home = tempDir()
  try {
    const src = makeSuperpowers(join(home, 'super powers'))
    const run = runInstaller(home, ['--skills', '--superpowers-from', src])
    assert.equal(run.status, 0, run.stdout + run.stderr)
    assert.ok(existsSync(join(home, '.dsh', 'skills', 'using-superpowers', 'SKILL.md')))
  } finally {
    cleanup(home)
  }
})

test('--superpowers-from wins over DSH_SUPERPOWERS_SOURCE', () => {
  const home = tempDir()
  try {
    const fromFlag = makeSuperpowers(join(home, 'flag-source'), 'from-flag')
    const fromEnv = makeSuperpowers(join(home, 'env-source'), 'from-env')
    const run = runInstaller(home, ['--skills', '--superpowers-from', fromFlag], {
      DSH_SUPERPOWERS_SOURCE: fromEnv,
    })
    assert.equal(run.status, 0, run.stdout + run.stderr)
    assert.match(
      readFileSync(join(home, '.dsh', 'skills', 'using-superpowers', 'SKILL.md'), 'utf8'),
      /from-flag/,
    )
  } finally {
    cleanup(home)
  }
})

test('DSH_SUPERPOWERS_SOURCE is used when the flag is absent', () => {
  const home = tempDir()
  try {
    const fromEnv = makeSuperpowers(join(home, 'env-source'), 'from-env')
    const run = runInstaller(home, ['--skills'], { DSH_SUPERPOWERS_SOURCE: fromEnv })
    assert.equal(run.status, 0, run.stdout + run.stderr)
    assert.match(
      readFileSync(join(home, '.dsh', 'skills', 'using-superpowers', 'SKILL.md'), 'utf8'),
      /from-env/,
    )
  } finally {
    cleanup(home)
  }
})

test('--skills fails when there is no source and nothing installed', () => {
  const home = tempDir()
  try {
    const run = runInstaller(home, ['--skills'])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 1, out)
    assert.match(out, /FAIL: no superpowers source/)
    assert.match(out, /no-superpowers-repo/)
    assert.match(out, /pass --superpowers-from/)
    assert.ok(existsSync(join(home, '.dsh', 'skills', 'role', 'SKILL.md')), 'local skills still installed')
    assert.ok(existsSync(join(home, '.dsh', 'skills', 'sdd', 'SKILL.md')), 'local skills still installed')
    assert.equal(existsSync(join(home, '.dsh', 'skills', 'using-superpowers')), false)
  } finally {
    cleanup(home)
  }
})

test('--skills keeps installed copies when the source is gone', () => {
  const home = tempDir()
  try {
    const installed = join(home, '.dsh', 'skills', 'using-superpowers', 'SKILL.md')
    write(installed, '---\nname: using-superpowers\n---\ninstalled\n')
    const run = runInstaller(home, ['--skills'])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 0, out)
    assert.match(out, /WARN: no superpowers source/)
    assert.match(readFileSync(installed, 'utf8'), /installed/)
  } finally {
    cleanup(home)
  }
})

test('empty DSH_SUPERPOWERS_SOURCE counts as unset', () => {
  const home = tempDir()
  try {
    const run = runInstaller(home, ['--skills'], { DSH_SUPERPOWERS_SOURCE: '' })
    const out = run.stdout + run.stderr
    assert.equal(run.status, 1, out)
    assert.match(out, /FAIL: no superpowers source/)
    assert.doesNotMatch(out, /explicit superpowers source/)
  } finally {
    cleanup(home)
  }
})

test('an invalid explicit source fails without touching the legacy cache', () => {
  const home = tempDir()
  try {
    makeLegacyCache(home)
    const empty = join(home, 'not-superpowers')
    const run = runInstaller(home, ['--skills', '--superpowers-from', empty])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 1, out)
    assert.match(out, /FAIL: explicit superpowers source is invalid: .* has no using-superpowers\/SKILL\.md/)
    assert.equal(existsSync(join(home, '.dsh', 'skills', 'brainstorming')), false)
  } finally {
    cleanup(home)
  }
})

test('the legacy plugin cache still works and warns', () => {
  const home = tempDir()
  try {
    makeLegacyCache(home)
    const run = runInstaller(home, ['--skills'])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 0, out)
    assert.match(out, /WARN: legacy superpowers source/)
    assert.match(run.stdout, /copied 2 superpowers skills/)
    assert.ok(existsSync(join(home, '.dsh', 'skills', 'using-superpowers', 'SKILL.md')))
  } finally {
    cleanup(home)
  }
})

test('--check warns about a manual non-git checkout', () => {
  const home = tempDir()
  try {
    makeSuperpowers(join(home, '.dsh', 'superpowers'))
    const run = runInstaller(home, ['--check'])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 0, out)
    assert.match(out, /not a git checkout; --skills will not update it/)
  } finally {
    cleanup(home)
  }
})

test('--check fails on an invalid explicit source', () => {
  const home = tempDir()
  try {
    const empty = join(home, 'not-superpowers')
    const run = runInstaller(home, ['--check'], { DSH_SUPERPOWERS_SOURCE: empty })
    const out = run.stdout + run.stderr
    assert.equal(run.status, 1, out)
    assert.match(out, /FAIL: explicit superpowers source/)
  } finally {
    cleanup(home)
  }
})

test('--global installs DSH role paths and explains the instruction format', () => {
  const home = tempDir()
  try {
    const globalSource = join(here, '..', '..', 'global', 'CLAUDE.md')
    const before = readFileSync(globalSource, 'utf8')
    const run = runInstaller(home, ['--global'])
    assert.equal(run.status, 0, run.stdout + run.stderr)

    const agents = readFileSync(join(home, '.dsh', 'AGENTS.md'), 'utf8')
    assert.match(agents, /~\/\.dsh\/roles\/dev\.md/)
    assert.doesNotMatch(agents, /~\/\.claude/)
    assert.match(agents, /superpowers skills are ~\/\.dsh\/skills/)
    assert.match(agents, /instruction-file format of this harness/)
    assert.match(agents, /does not imply a Claude Code runtime/)
    assert.equal(readFileSync(globalSource, 'utf8'), before, 'global/CLAUDE.md must stay untouched')

    const second = runInstaller(home, ['--global'])
    assert.equal(second.status, 0, second.stdout + second.stderr)
    assert.match(second.stdout, /backup: /)
  } finally {
    cleanup(home)
  }
})

test('a legacy cache without using-superpowers is not a source', () => {
  const home = tempDir()
  try {
    const cache = join(
      home,
      '.claude',
      'plugins',
      'cache',
      'claude-plugins-official',
      'superpowers',
      '7.0.0',
      'skills',
    )
    write(join(cache, 'brainstorming', 'SKILL.md'), '---\nname: brainstorming\n---\nbody\n')
    const run = runInstaller(home, ['--skills'])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 1, out)
    assert.match(out, /FAIL: no superpowers source/)
    assert.doesNotMatch(out, /copied 0 superpowers/)
    assert.equal(existsSync(join(home, '.dsh', 'skills', 'brainstorming')), false)
  } finally {
    cleanup(home)
  }
})

test('an empty --superpowers-from is rejected, not ignored', () => {
  const home = tempDir()
  try {
    makeLegacyCache(home)
    for (const args of [['--skills', '--superpowers-from='], ['--skills', '--superpowers-from', '']]) {
      const run = runInstaller(home, args)
      const out = run.stdout + run.stderr
      assert.equal(run.status, 2, out)
      assert.match(out, /needs a non-empty directory/)
      assert.equal(existsSync(join(home, '.dsh', 'skills', 'using-superpowers')), false)
    }
  } finally {
    cleanup(home)
  }
})

test('--skills clones the git source on first run', () => {
  const home = tempDir()
  try {
    const repo = makeSuperpowersRepo(home)
    const sha = git(repo, ['rev-parse', '--short', 'HEAD'])
    const run = runInstaller(home, ['--skills'], { DSH_SUPERPOWERS_REPO: gitUrl(repo) })
    const out = run.stdout + run.stderr
    assert.equal(run.status, 0, out)
    assert.ok(existsSync(join(home, '.dsh', 'superpowers', '.git')), 'clone is missing')
    assert.match(run.stdout, /copied 2 superpowers skills/)
    assert.ok(run.stdout.includes(`git ${sha}`), out)
    assert.ok(existsSync(join(home, '.dsh', 'skills', 'using-superpowers', 'SKILL.md')))
  } finally {
    cleanup(home)
  }
})

test('--skills updates an existing clone to the new commit', () => {
  const home = tempDir()
  try {
    const repo = makeSuperpowersRepo(home)
    const env = { DSH_SUPERPOWERS_REPO: gitUrl(repo) }
    assert.equal(runInstaller(home, ['--skills'], env).status, 0)

    write(join(repo, 'skills', 'new-skill', 'SKILL.md'), '---\nname: new-skill\n---\nbody\n')
    git(repo, ['add', '.'])
    git(repo, ['commit', '-m', 'add new-skill'])
    const sha = git(repo, ['rev-parse', '--short', 'HEAD'])

    const second = runInstaller(home, ['--skills'], env)
    const out = second.stdout + second.stderr
    assert.equal(second.status, 0, out)
    assert.ok(existsSync(join(home, '.dsh', 'skills', 'new-skill', 'SKILL.md')), 'clone was not updated')
    assert.ok(second.stdout.includes(`git ${sha}`), out)
  } finally {
    cleanup(home)
  }
})

test('an offline update keeps the cached clone', () => {
  const home = tempDir()
  try {
    const repo = makeSuperpowersRepo(home)
    assert.equal(runInstaller(home, ['--skills'], { DSH_SUPERPOWERS_REPO: gitUrl(repo) }).status, 0)

    const offline = runInstaller(home, ['--skills'], { DSH_SUPERPOWERS_REPO: join(home, 'gone') })
    const out = offline.stdout + offline.stderr
    assert.equal(offline.status, 0, out)
    assert.match(out, /WARN: cannot update superpowers/)
    assert.match(offline.stdout, /copied 2 superpowers skills/)
  } finally {
    cleanup(home)
  }
})

test('a failed first clone leaves no checkout behind', () => {
  const home = tempDir()
  try {
    const run = runInstaller(home, ['--skills'])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 1, out)
    assert.equal(existsSync(join(home, '.dsh', 'superpowers')), false, 'broken clone must not stay')
    assert.match(out, /FAIL: no superpowers source/)
  } finally {
    cleanup(home)
  }
})

test('an explicit source never touches git', () => {
  const home = tempDir()
  try {
    const src = makeSuperpowers(join(home, 'src', 'superpowers'))
    const run = runInstaller(home, ['--skills', '--superpowers-from', src])
    assert.equal(run.status, 0, run.stdout + run.stderr)
    assert.equal(existsSync(join(home, '.dsh', 'superpowers')), false)
  } finally {
    cleanup(home)
  }
})

test('a manual non-git checkout is used but not updated', () => {
  const home = tempDir()
  try {
    makeSuperpowers(join(home, '.dsh', 'superpowers'))
    const run = runInstaller(home, ['--skills'])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 0, out)
    assert.match(out, /not a git checkout/)
    assert.match(run.stdout, /copied 2 superpowers skills/)
  } finally {
    cleanup(home)
  }
})

test('--check reports the git sha of the managed checkout', () => {
  const home = tempDir()
  try {
    const repo = makeSuperpowersRepo(home)
    const sha = git(repo, ['rev-parse', '--short', 'HEAD'])
    assert.equal(runInstaller(home, ['--skills'], { DSH_SUPERPOWERS_REPO: gitUrl(repo) }).status, 0)
    const run = runInstaller(home, ['--check'])
    const out = run.stdout + run.stderr
    assert.equal(run.status, 0, out)
    assert.match(out, new RegExp(`ok: superpowers source \\(.*superpowers/skills, git ${sha}\\)`))
  } finally {
    cleanup(home)
  }
})

test('--check never clones on an empty HOME', () => {
  const home = tempDir()
  try {
    const repo = makeSuperpowersRepo(home)
    const run = runInstaller(home, ['--check'], { DSH_SUPERPOWERS_REPO: gitUrl(repo) })
    const out = run.stdout + run.stderr
    assert.equal(run.status, 0, out)
    assert.equal(existsSync(join(home, '.dsh', 'superpowers')), false, '--check must not clone')
    assert.match(out, /WARN: no superpowers source/)
  } finally {
    cleanup(home)
  }
})