import { mkdtemp, mkdir, readFile, symlink, writeFile } from 'fs/promises'
import { join, resolve } from 'path'
import { tmpdir } from 'os'
import { afterEach, describe, expect, it, vi } from 'vitest'

vi.mock('electron', () => ({ app: { getPath: () => '/unused', getAppPath: () => '/unused/app' } }))
import { getAvailableModulePackages, getModuleRegistry, installModulePackage, uninstallModulePackage, validateModuleManifest } from './moduleRegistry'

const roots: string[] = []
async function temp(prefix: string): Promise<string> { const root = await mkdtemp(join(tmpdir(), prefix)); roots.push(root); return root }
const manifest = { id: 'sample-app', name: 'Sample', version: '1.0.0', category: 'application', description: 'test', aurora: { core: '2.0.0-alpha.24', moduleApi: '1.0.0' }, dependencies: [], conflicts: [], settings: [] }
async function packageDir(value = manifest): Promise<string> { const root = await temp('aurora-package-'); await writeFile(join(root, 'manifest.json'), JSON.stringify(value)); return root }

afterEach(async () => { const { rm } = await import('fs/promises'); await Promise.all(roots.splice(0).map((root) => rm(root, { recursive: true, force: true }))) })

describe('external module registry', () => {
  it('starts empty', async () => expect(await getModuleRegistry(await temp('aurora-user-'))).toEqual([]))
  it('lists discoverable packages for the module library', async () => {
    const catalog = await temp('aurora-catalog-'); const source = join(catalog, 'sample-app'); await mkdir(source); await writeFile(join(source, 'manifest.json'), JSON.stringify(manifest))
    process.env.AURORA_MODULE_PATH = catalog
    expect((await getAvailableModulePackages()).map((item) => item.manifest.id)).toContain('sample-app')
    delete process.env.AURORA_MODULE_PATH
  })
  it('installs a valid local package and refreshes after install', async () => {
    const userData = await temp('aurora-user-'); const source = await packageDir()
    await installModulePackage(source, userData)
    expect((await getModuleRegistry(userData)).map((item) => item.id)).toEqual(['sample-app'])
  })
  it('rejects invalid and incompatible manifests', () => {
    expect(() => validateModuleManifest({ ...manifest, id: '../escape' })).toThrow(/module id/)
    expect(() => validateModuleManifest({ ...manifest, aurora: { core: '9.0.0', moduleApi: '1.0.0' } })).toThrow(/requires Aurora Core/)
    expect(() => validateModuleManifest({ ...manifest, main: '../outside.cjs' })).toThrow(/may not leave/)
    expect(() => validateModuleManifest({ ...manifest, dependencies: ['../escape'] })).toThrow(/module id array/)
    expect(() => validateModuleManifest({ ...manifest, project: { adminPath: 'admin' } })).toThrow(/must start with/)
  })
  it('rejects symbolic links in package paths', async () => {
    const userData = await temp('aurora-user-'); const source = await packageDir(); await mkdir(join(source, 'main')); await symlink('/tmp', join(source, 'main', 'escape'))
    await expect(installModulePackage(source, userData)).rejects.toThrow(/symbolic links/)
  })
  it('refreshes after uninstall without touching source', async () => {
    const userData = await temp('aurora-user-'); const source = await packageDir(); await installModulePackage(source, userData); await uninstallModulePackage('sample-app', userData)
    expect(await getModuleRegistry(userData)).toEqual([])
    expect(await import('fs/promises').then(({ stat }) => stat(join(source, 'manifest.json')))).toBeTruthy()
  })

  it('updates an installed package atomically at the same registry id', async () => {
    const userData = await temp('aurora-user-')
    await installModulePackage(await packageDir(), userData)
    await installModulePackage(await packageDir({ ...manifest, version: '1.1.0' }), userData)
    expect((await getModuleRegistry(userData)).map((item) => item.version)).toEqual(['1.1.0'])
  })

  it('uninstalls only the package and preserves existing project data', async () => {
    const userData = await temp('aurora-user-')
    const project = await temp('aurora-project-')
    const sentinel = join(project, 'site-content.txt')
    await writeFile(sentinel, 'keep me')
    await installModulePackage(await packageDir(), userData)
    await uninstallModulePackage('sample-app', userData)
    expect(await readFile(sentinel, 'utf8')).toBe('keep me')
  })

  it('accepts the independently packaged WordPress module contract', async () => {
    const packageRoot = resolve(process.cwd(), 'packages/aurora-module-wordpress')
    const actual = JSON.parse(await readFile(join(packageRoot, 'manifest.json'), 'utf8'))
    expect(validateModuleManifest(actual).id).toBe('wordpress')
  })
})