import assert from 'node:assert/strict'
import { mkdir, mkdtemp, rm, writeFile } from 'node:fs/promises'
import { tmpdir } from 'node:os'
import path from 'node:path'
import test from 'node:test'

import {
  discoverOpenApiFiles,
  parseServiceModules,
  summarizeCoverage,
  validateRepositoryOpenApi
} from './validate-openapi.mjs'

test('discovers new static OpenAPI documents without a handwritten file list', async (t) => {
  const root = await mkdtemp(path.join(tmpdir(), 'baiyue-openapi-discovery-'))
  t.after(() => rm(root, { recursive: true, force: true }))
  const openapi = path.join(root, 'new-service', 'src', 'main', 'resources', 'openapi')
  const ignored = path.join(root, 'new-service', 'target', 'src', 'main', 'resources', 'openapi')
  await mkdir(openapi, { recursive: true })
  await mkdir(ignored, { recursive: true })
  await writeFile(path.join(openapi, 'new-api.yaml'), 'openapi: 3.0.3\n', 'utf8')
  await writeFile(path.join(openapi, 'new-api.json'), '{"openapi":"3.0.3"}\n', 'utf8')
  await writeFile(path.join(openapi, 'notes.md'), 'not an OpenAPI document\n', 'utf8')
  await writeFile(path.join(ignored, 'ignored.yaml'), 'openapi: 3.0.3\n', 'utf8')

  assert.deepEqual(await discoverOpenApiFiles(root), [
    'new-service/src/main/resources/openapi/new-api.json',
    'new-service/src/main/resources/openapi/new-api.yaml'
  ])
})

test('derives static and code-first service coverage from service-map', () => {
  const serviceModules = parseServiceModules('services:\n  alpha:\n    port: 1\n  beta:\n    port: 2\n')
  assert.deepEqual(serviceModules, ['alpha', 'beta'])
  assert.deepEqual(summarizeCoverage([
    'alpha/src/main/resources/openapi/alpha.yaml'
  ], serviceModules), {
    coveredServices: ['alpha'],
    codeFirstServices: ['beta']
  })
})

test('rejects an unresolved OpenAPI reference', async (t) => {
  const root = await mkdtemp(path.join(tmpdir(), 'baiyue-openapi-ref-'))
  t.after(() => rm(root, { recursive: true, force: true }))
  const openapi = path.join(root, 'alpha', 'src', 'main', 'resources', 'openapi')
  await mkdir(openapi, { recursive: true })
  await mkdir(path.join(root, 'deploy'), { recursive: true })
  await writeFile(path.join(root, 'deploy', 'service-map.yml'), 'services:\n  alpha:\n    port: 1\n', 'utf8')
  await writeFile(path.join(openapi, 'broken.yaml'), `openapi: 3.0.3
info:
  title: Broken API
  version: 1.0.0
paths:
  /broken:
    get:
      responses:
        '200':
          description: broken
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Missing'
`, 'utf8')

  await assert.rejects(validateRepositoryOpenApi(root), /Missing \$ref pointer/)
})