import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'bun:test'
import type { FastifyInstance } from 'fastify'
import { createTestApp, cleanDb, seedTestCompany, registerAndLogin } from '../../../src/test/helpers.js'

describe('WebDAV', () => {
  let app: FastifyInstance
  let basicAuth: string

  beforeAll(async () => {
    app = await createTestApp()
  })

  afterAll(async () => {
    await app.close()
  })

  beforeEach(async () => {
    await cleanDb(app)
    await seedTestCompany(app)
    const { user } = await registerAndLogin(app, {
      email: 'webdav@forte.dev',
      password: 'webdavpass1234',
    })
    basicAuth = 'Basic ' + Buffer.from('webdav@forte.dev:webdavpass1234').toString('base64')
  })

  describe('OPTIONS', () => {
    it('returns DAV headers on root', async () => {
      const res = await app.inject({ method: 'OPTIONS', url: '/webdav/' })
      expect(res.statusCode).toBe(200)
      expect(res.headers['dav']).toContain('1')
      expect(res.headers['allow']).toContain('PROPFIND')
      expect(res.headers['allow']).toContain('GET')
      expect(res.headers['allow']).toContain('PUT')
    })

    it('returns DAV headers on wildcard path', async () => {
      const res = await app.inject({ method: 'OPTIONS', url: '/webdav/some/path' })
      expect(res.statusCode).toBe(200)
      expect(res.headers['dav']).toContain('1')
    })
  })

  describe('Authentication', () => {
    it('returns 401 without credentials', async () => {
      const res = await app.inject({
        method: 'PROPFIND' as any,
        url: '/webdav/',
      })
      expect(res.statusCode).toBe(401)
      expect(res.headers['www-authenticate']).toContain('Basic')
    })

    it('returns 401 with wrong password', async () => {
      const res = await app.inject({
        method: 'PROPFIND' as any,
        url: '/webdav/',
        headers: { authorization: 'Basic ' + Buffer.from('webdav@forte.dev:wrongpass').toString('base64') },
      })
      expect(res.statusCode).toBe(401)
    })

    it('succeeds with correct credentials', async () => {
      const res = await app.inject({
        method: 'PROPFIND' as any,
        url: '/webdav/',
        headers: { authorization: basicAuth, depth: '0' },
      })
      expect(res.statusCode).toBe(207)
    })
  })

  describe('PROPFIND', () => {
    it('lists root with depth 0', async () => {
      const res = await app.inject({
        method: 'PROPFIND' as any,
        url: '/webdav/',
        headers: { authorization: basicAuth, depth: '0' },
      })
      expect(res.statusCode).toBe(207)
      expect(res.headers['content-type']).toContain('application/xml')
      expect(res.body).toContain('<D:multistatus')
      expect(res.body).toContain('<D:collection/')
    })

    it('lists root folders with depth 1', async () => {
      // Create a folder first via MKCOL
      await app.inject({
        method: 'MKCOL' as any,
        url: '/webdav/Test%20Folder',
        headers: { authorization: basicAuth },
      })

      const res = await app.inject({
        method: 'PROPFIND' as any,
        url: '/webdav/',
        headers: { authorization: basicAuth, depth: '1' },
      })
      expect(res.statusCode).toBe(207)
      expect(res.body).toContain('Test Folder')
    })
  })

  describe('MKCOL', () => {
    it('creates a folder', async () => {
      const res = await app.inject({
        method: 'MKCOL' as any,
        url: '/webdav/Documents',
        headers: { authorization: basicAuth },
      })
      expect(res.statusCode).toBe(201)

      // Verify it appears in PROPFIND
      const listing = await app.inject({
        method: 'PROPFIND' as any,
        url: '/webdav/',
        headers: { authorization: basicAuth, depth: '1' },
      })
      expect(listing.body).toContain('Documents')
    })

    it('returns 405 if folder already exists', async () => {
      await app.inject({
        method: 'MKCOL' as any,
        url: '/webdav/Documents',
        headers: { authorization: basicAuth },
      })
      const res = await app.inject({
        method: 'MKCOL' as any,
        url: '/webdav/Documents',
        headers: { authorization: basicAuth },
      })
      expect(res.statusCode).toBe(405)
    })
  })

  describe('PUT / GET / DELETE', () => {
    it('uploads, downloads, and deletes a file', async () => {
      // Create parent folder
      await app.inject({
        method: 'MKCOL' as any,
        url: '/webdav/Uploads',
        headers: { authorization: basicAuth },
      })

      // PUT a file
      const fileContent = 'Hello, WebDAV!'
      const putRes = await app.inject({
        method: 'PUT',
        url: '/webdav/Uploads/test.txt',
        headers: {
          authorization: basicAuth,
          'content-type': 'text/plain',
        },
        body: fileContent,
      })
      expect(putRes.statusCode).toBe(201)
      expect(putRes.headers['etag']).toBeDefined()

      // GET the file
      const getRes = await app.inject({
        method: 'GET',
        url: '/webdav/Uploads/test.txt',
        headers: { authorization: basicAuth },
      })
      expect(getRes.statusCode).toBe(200)
      expect(getRes.body).toBe(fileContent)
      expect(getRes.headers['content-type']).toContain('text/plain')

      // DELETE the file
      const delRes = await app.inject({
        method: 'DELETE',
        url: '/webdav/Uploads/test.txt',
        headers: { authorization: basicAuth },
      })
      expect(delRes.statusCode).toBe(204)

      // Verify it's gone
      const getRes2 = await app.inject({
        method: 'GET',
        url: '/webdav/Uploads/test.txt',
        headers: { authorization: basicAuth },
      })
      expect(getRes2.statusCode).toBe(404)
    })

    it('overwrites an existing file with PUT', async () => {
      await app.inject({
        method: 'MKCOL' as any,
        url: '/webdav/Overwrite',
        headers: { authorization: basicAuth },
      })

      // Upload original
      await app.inject({
        method: 'PUT',
        url: '/webdav/Overwrite/doc.txt',
        headers: { authorization: basicAuth, 'content-type': 'text/plain' },
        body: 'version 1',
      })

      // Overwrite
      const putRes = await app.inject({
        method: 'PUT',
        url: '/webdav/Overwrite/doc.txt',
        headers: { authorization: basicAuth, 'content-type': 'text/plain' },
        body: 'version 2',
      })
      expect(putRes.statusCode).toBe(204)

      // Verify new content
      const getRes = await app.inject({
        method: 'GET',
        url: '/webdav/Overwrite/doc.txt',
        headers: { authorization: basicAuth },
      })
      expect(getRes.body).toBe('version 2')
    })
  })

  describe('DELETE folder', () => {
    it('deletes a folder', async () => {
      await app.inject({
        method: 'MKCOL' as any,
        url: '/webdav/ToDelete',
        headers: { authorization: basicAuth },
      })

      const res = await app.inject({
        method: 'DELETE',
        url: '/webdav/ToDelete',
        headers: { authorization: basicAuth },
      })
      expect(res.statusCode).toBe(204)
    })
  })

  describe('LOCK / UNLOCK', () => {
    it('returns a lock token', async () => {
      const res = await app.inject({
        method: 'LOCK' as any,
        url: '/webdav/some-resource',
        headers: { authorization: basicAuth },
      })
      expect(res.statusCode).toBe(200)
      expect(res.headers['lock-token']).toContain('opaquelocktoken:')
      expect(res.body).toContain('<D:lockdiscovery')
    })

    it('unlocks a resource', async () => {
      const lockRes = await app.inject({
        method: 'LOCK' as any,
        url: '/webdav/some-resource',
        headers: { authorization: basicAuth },
      })
      const lockToken = lockRes.headers['lock-token'] as string

      const unlockRes = await app.inject({
        method: 'UNLOCK' as any,
        url: '/webdav/some-resource',
        headers: {
          authorization: basicAuth,
          'lock-token': lockToken,
        },
      })
      expect(unlockRes.statusCode).toBe(204)
    })
  })

  describe('HEAD', () => {
    it('returns headers for a file', async () => {
      await app.inject({
        method: 'MKCOL' as any,
        url: '/webdav/HeadTest',
        headers: { authorization: basicAuth },
      })
      await app.inject({
        method: 'PUT',
        url: '/webdav/HeadTest/file.txt',
        headers: { authorization: basicAuth, 'content-type': 'text/plain' },
        body: 'test content',
      })

      const res = await app.inject({
        method: 'HEAD',
        url: '/webdav/HeadTest/file.txt',
        headers: { authorization: basicAuth },
      })
      expect(res.statusCode).toBe(200)
      expect(res.headers['content-type']).toContain('text/plain')
      expect(res.headers['etag']).toBeDefined()
    })
  })
})