/**
 * scaffold-api-client — CLI entry contract. `index.ts` used to hand the RAW
 * spec to generate(): `scope: 'row'`, `responseType: 'void'`, `fields: []`,
 * `required: true` never existed at runtime — a custom action lost its
 * `/${id}` segment and an entity without `fields` crashed with a stack trace.
 *
 * QC 2026-09-24 (lot 13): the lot-1 "parity" test compared generate(parse(x))
 * to generate(parse(parse(x))) — schema output on both sides, so a schema
 * stripping a key the renderer reads could never be detected. The parity
 * block now holds two REAL properties (lib/__tests__/helpers/spec-parity):
 * no-strip against the RAW example, defaults-only against the schema's
 * DECLARED defaults — each proven to fire.
 */
import { describe, it, expect } from 'vitest'
import { dirname, resolve } from 'node:path'
import { fileURLToPath } from 'node:url'
import { z } from 'zod'
import { runCli } from '../../../../../../lib/__tests__/helpers/run-cli.js'
import { specParity } from '../../../../../../lib/__tests__/helpers/spec-parity.js'
import { validate } from '../validate.js'
import { generate } from '../generate.js'
import { ApiEntitySchema, ScaffoldApiClientInputSchema } from '../types.js'

const INDEX = resolve(dirname(fileURLToPath(import.meta.url)), '../index.ts')

/** Entity WITHOUT `fields`, with a custom action declaring only its code. */
const SPEC = {
  module: 'hrm', appCode: 'myapp',
  entities: [{ name: 'Employee', section: 'employees', customActions: [{ code: 'archive' }] }],
  projectPath: '/path',
}

describe('scaffold-api-client — the CLI entry runs the PARSED spec', () => {
  it('runs an entity without `fields` in --dry_run (the raw spec crashed on `fields.map`)', () => {
    const r = runCli(INDEX, ['--spec', JSON.stringify(SPEC), '--dry_run'])
    expect(r.envelope, r.stderr).not.toBeNull()
    expect(r.envelope.success, JSON.stringify(r.envelope.errors)).toBe(true)
    expect(r.status).toBe(0)
    expect(r.envelope.data.files.some((f: string) => f.endsWith('employeeService.ts'))).toBe(true)
  })

  it('validate() returns the parsed spec with the documented defaults applied', () => {
    const v = validate(SPEC)
    expect(v.valid).toBe(true)
    expect(v.data?.entities[0]?.fields).toEqual([])
    expect(v.data?.entities[0]?.customActions[0]?.scope).toBe('row')
    expect(v.data?.entities[0]?.customActions[0]?.responseType).toBe('void')
    expect(v.data?.routeMode).toBe('integration')
  })

  it('a custom action declaring only its code targets the ROW URL once parsed (scope default row)', () => {
    const service = generate(validate(SPEC).data!).find(f => f.path.endsWith('employeeService.ts'))
    expect(service).toBeDefined()
    expect(service!.content).toContain('/${id}/archive')
  })
})

describe('scaffold-api-client — parity RAW ↔ PARSED (real properties, not schema-vs-schema)', () => {
  const parsed = () => validate(SPEC).data!

  it('(a) no-strip: every key path of the spec survives the parse with its value', () => {
    const report = specParity(SPEC, parsed(), ScaffoldApiClientInputSchema)
    expect(report.rawPaths).toContain('entities[0].customActions[0].code') // the walk reaches the nested keys
    expect(report.stripped).toEqual([])
    expect(report.changed).toEqual([])
  })

  it('(b) defaults-only: every key the parse adds is a default DECLARED at that path, with that value', () => {
    const report = specParity(SPEC, parsed(), ScaffoldApiClientInputSchema)
    expect(report.added.map(a => a.path)).toEqual(expect.arrayContaining([
      'routeMode', 'entities[0].fields', 'entities[0].customActions[0].scope', 'entities[0].customActions[0].responseType',
    ]))
    expect(report.undeclared).toEqual([])
  })

  it('secondary: generate() reads nothing a JSON round-trip of the parsed spec would lose', () => {
    const p = parsed()
    expect(generate(p)).toEqual(generate(JSON.parse(JSON.stringify(p))))
  })

  it('FIRES (a): a strip-mode copy of the schema without `entities[].section` is reported at that path', () => {
    const stripping = z.object({
      ...ScaffoldApiClientInputSchema.shape,
      entities: z.array(ApiEntitySchema.omit({ section: true })),
    })
    const report = specParity(SPEC, stripping.parse(SPEC), stripping)
    expect(report.stripped).toEqual(['entities[0].section'])
    expect(report.changed).toEqual([])
  })

  it('FIRES (b): a key injected after the parse, or a default applied with another value, is reported', () => {
    expect(specParity(SPEC, { ...parsed(), webRoot: 'web/myapp-web' }, ScaffoldApiClientInputSchema).undeclared).toEqual(['webRoot'])
    expect(specParity(SPEC, { ...parsed(), routeMode: 'screens' }, ScaffoldApiClientInputSchema).undeclared).toEqual(['routeMode'])
  })
})