import { readFileSync } from 'node:fs'
import { resolve } from 'node:path'
import { describe, expect, it } from 'vitest'

// OPS117 guard: the two design agents must carry the SAME `permission.bash`
// ruleset. They are two files by design (the degraded agent is a distinct
// `mode: subagent` identity), so nothing but this spec stops one of them from
// drifting while the other keeps the guard — the exact anti-goal (`designer`
// guarded, `designer-degraded` leaking a shell write).
//
// The expected array is pinned on purpose: comparing the two files only would
// let a rule disappear from BOTH at once. Here the contract is the literal
// ruleset, so eroding the guard fails the build too.
//
// The spec parses the YAML frontmatter line-by-line (no YAML dependency): a
// block is the 4-space-indented run under `  <key>:`. Order matters — bash
// rules resolve last-match-wins, so the artifact allow sits at the end.

const repoRoot = process.cwd()
const agents = ['designer', 'designer-degraded'] as const

// Keep in sync with `.opencode/agent/designer.md` and `designer-degraded.md`.
const expectedBash = [
  `'*': ask`,
  `'*>*': deny`,
  `'sed *-i*': deny`,
  `'tee *': deny`,
  `'cp *': deny`,
  `'mv *': deny`,
  `'rm *': deny`,
  `'mkdir *': deny`,
  `'touch *': deny`,
  `'truncate *': deny`,
  `'dd *': deny`,
  `'install *': deny`,
  `'ln *': deny`,
  `'chmod *': deny`,
  `'chown *': deny`,
  `'bash *': deny`,
  `'sh *': deny`,
  `'zsh *': deny`,
  `'python*': deny`,
  `'node *': deny`,
  `'bun *': deny`,
  `'deno *': deny`,
  `'perl *': deny`,
  `'ruby *': deny`,
  `'find *-exec*': deny`,
  `'find *-delete*': deny`,
  `'xargs *': deny`,
  `'git checkout*': deny`,
  `'git restore*': deny`,
  `'git apply*': deny`,
  `'* > docs/plans/*-ui-design*': allow`,
  `'prettier --write docs/plans/*-ui-design*': allow`,
]

const frontmatter = (agent: string) => {
  const content = readFileSync(resolve(repoRoot, `.opencode/agent/${agent}.md`), 'utf8')
  const match = content.match(/^---\n([\s\S]*?)\n---/)
  expect(match, `${agent}: frontmatter must be delimited by ---`).not.toBeNull()
  return match![1]
}

const bodyOf = (agent: string) => {
  const content = readFileSync(resolve(repoRoot, `.opencode/agent/${agent}.md`), 'utf8')
  return content.replace(/^---\n[\s\S]*?\n---\n/, '')
}

const block = (agent: string, key: 'bash' | 'edit') => {
  const lines = frontmatter(agent).split('\n')
  const start = lines.findIndex((line) => line === `  ${key}:`)
  expect(start, `${agent}: permission.${key} block must exist`).toBeGreaterThanOrEqual(0)

  const rules: string[] = []
  for (const line of lines.slice(start + 1)) {
    if (line.trim() === '') continue
    if (!line.startsWith('    ')) break
    rules.push(line.trim())
  }
  return rules
}

describe('design agents share the OPS117 bash write guard', () => {
  it.each(agents)('%s declares the pinned bash ruleset (default ask, writes denied)', (agent) => {
    const rules = block(agent, 'bash')

    // Default is `ask` (never silent), the artifact is the last match, and the
    // enumerated write vectors — redirect, in-place sed, tee, mutators, nested
    // shells/interpreters, find -exec/-delete, xargs, destructive git — deny.
    expect(rules).toEqual(expectedBash)
  })

  // DESIGN1: only the frontier designer evolves the living visual rules
  // (`DESIGN.md` §7); the degraded tier proposes and hands the decision back.
  const expectedEdit = {
    designer: [`'*': deny`, `'docs/plans/*-ui-design*': allow`, `'DESIGN.md': allow`],
    'designer-degraded': [`'*': deny`, `'docs/plans/*-ui-design*': allow`],
  } as const

  it.each(agents)('%s keeps the file-tool gate fail-closed (OPS113 intact)', (agent) => {
    expect(block(agent, 'edit')).toEqual(expectedEdit[agent])
  })
})

// Quota guard: the frontier designer must only run real design work. The waste
// this pins against — burning the OpenAI Plus weekly quota on permission/
// frontmatter smoke tests, vision sanity checks and config probes via the
// frontier pin — is exactly what the closed dispatch scope forbids. The rule's
// owner is the doctrine; the agents and the work-issue pipeline point at it.
describe('frontier designer is scoped to real design work (quota guard)', () => {
  const doctrine = () =>
    readFileSync(resolve(repoRoot, '.agents/skills/plan-issue/ui-design-html.md'), 'utf8')

  it('the doctrine owns a closed dispatch scope with a pre-dispatch gate', () => {
    const content = doctrine()

    expect(content, 'doctrine must name the dispatch-scope section').toContain('Escopo de dispatch')
    expect(content, 'doctrine must forbid the frontier for non-design work').toContain(
      'NUNCA vai para o `designer` frontier',
    )
    expect(content, 'doctrine must pin the three-question gate').toContain('muda UI')
    expect(content, 'doctrine must call out the permission smoke in particular').toContain(
      'permission',
    )
  })

  it('the designer agent refuses work outside the design modes', () => {
    const content = bodyOf('designer')

    expect(content, 'designer must declare the scope rule').toContain('Só design de fato')
    expect(content, 'designer must refuse and hand back, not comply').toContain('recuse')
    expect(content, 'designer must point at the doctrine').toContain('ui-design-html.md')
  })

  it('the degraded agent is the sanctioned tier for the design-guard smoke', () => {
    const content = bodyOf('designer-degraded')

    expect(content, 'degraded agent must accept the guard smoke').toContain(
      'smoke do guard dos agentes de design',
    )
    expect(content, 'degraded smoke must stay DEGRADED').toContain('DEGRADED')
  })

  it('plan-issue and the work-issue pipeline point at the closed scope', () => {
    const planIssue = readFileSync(resolve(repoRoot, '.agents/skills/plan-issue/SKILL.md'), 'utf8')
    const pipeline = readFileSync(
      resolve(repoRoot, '.agents/skills/work-issue/execution-pipeline.md'),
      'utf8',
    )

    expect(planIssue, 'plan-issue must reference the scope').toContain('§Escopo de dispatch')
    expect(pipeline, 'pipeline must forbid the frontier for the guard smoke').toContain(
      'Fora do `designer` frontier de vez',
    )
  })
})