import { createServer } from 'node:net'
import { randomUUID } from 'node:crypto'
import path from 'node:path'
import { fileURLToPath } from 'node:url'
import pg from 'pg'
import jwt from 'jsonwebtoken'
import { afterAll, beforeAll, describe, expect, it } from 'vitest'
import type { CaseState, DocumentExhibit, EventExhibit, FolderExhibit, NoteExhibit, PartyExhibit, TimelineView } from '../src/types.js'
import { runMigrations } from './migrations.js'

const { Client } = pg
const baseDatabaseUrl = process.env.TEST_DATABASE_URL
const suite = baseDatabaseUrl ? describe : describe.skip
const databaseName = `osint_api_test_${process.pid}_${Date.now()}`
let adminClient: InstanceType<typeof Client>
let appServer: Awaited<typeof import('./index.js')>['server']
let appPool: Awaited<typeof import('./index.js')>['pool']
let baseUrl = ''
let adminAuthorization = ''

function adminFetch(url: string, init: RequestInit = {}) {
  const headers = new Headers(init.headers)
  headers.set('authorization', adminAuthorization)
  return fetch(url, { ...init, headers })
}

async function availablePort() {
  return new Promise<number>((resolve, reject) => {
    const probe = createServer()
    probe.once('error', reject)
    probe.listen(0, '127.0.0.1', () => {
      const address = probe.address()
      const port = typeof address === 'object' && address ? address.port : 0
      probe.close(error => error ? reject(error) : resolve(port))
    })
  })
}

const placed = (x: number, y: number, width: number, height: number, zIndex = 1) => ({ x, y, width, height, rotation: 0, zIndex, hidden: false })

suite('normalized level persistence API', () => {
  beforeAll(async () => {
    const adminUrl = new URL(baseDatabaseUrl!)
    adminUrl.pathname = '/postgres'
    adminClient = new Client({ connectionString: adminUrl.toString() })
    await adminClient.connect()
    await adminClient.query(`CREATE DATABASE "${databaseName}"`)
    const testUrl = new URL(baseDatabaseUrl!)
    testUrl.pathname = `/${databaseName}`
    const databaseUrl = testUrl.toString()
    await runMigrations(databaseUrl, path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..', 'migrations'), () => undefined)

    const port = await availablePort()
    process.env.DATABASE_URL = databaseUrl
    process.env.LEVEL_EDITING_ENABLED = 'true'
    process.env.JWT_SECRET = 'osint-integration-jwt-secret'
    process.env.ASSET_STORAGE_DRIVER = 'memory'
    process.env.PORT = String(port)
    const serverModule = await import('./index.js')
    appServer = serverModule.server
    appPool = serverModule.pool
    baseUrl = `http://127.0.0.1:${port}`
    adminAuthorization = `Bearer ${jwt.sign({ sub: 'integration-admin', role: 'admin' }, process.env.JWT_SECRET)}`
  })

  afterAll(async () => {
    if (appServer) await new Promise<void>((resolve, reject) => appServer.close(error => error ? reject(error) : resolve()))
    if (appPool) await appPool.end()
    if (!adminClient) return
    await adminClient.query(`DROP DATABASE IF EXISTS "${databaseName}"`)
    await adminClient.end()
  })

  it('round-trips exhibits, relations, board views, private objects, and template clones', async () => {
    expect(await (await fetch(`${baseUrl}/api/session`)).json()).toEqual({ authenticated: false, isAdmin: false })
    const createResponse = await adminFetch(`${baseUrl}/api/levels`, {
      method: 'POST', headers: { 'content-type': 'application/json' }, body: JSON.stringify({ id: 'api-smoke-level', title: 'API Smoke Level' }),
    })
    expect(createResponse.status).toBe(201)
    const state = await createResponse.json() as CaseState
    const timeline = state.views.find((view): view is TimelineView => view.type === 'timeline')!
    timeline.rangeMode = 'fixed'
    timeline.range = { start: '2021-04-01', end: '2021-04-30' }
    state.viewport = { x: 91, y: -42, zoom: 0.85 }

    const document: DocumentExhibit = { id: randomUUID(), type: 'document', title: 'Evidence', publishedAt: '2021-04-17T12:00:00Z', body: ['Extracted body'], regions: [{ id: 'stamp', label: 'Date stamp', excerpt: '17 April 2021', date: '2021-04-17T09:00:00Z' }], fileType: 'image', metadata: {}, ...placed(1051, 417, 174, 145, 2) }
    const folder: FolderExhibit = { id: randomUUID(), type: 'folder', title: 'Folder', content: 'Evidence folder', isOpen: true, ...placed(685, 417, 260, 166) }
    const note: NoteExhibit = { id: randomUUID(), type: 'note', title: 'Extract', content: 'Date matters', ...placed(420, 300, 108, 154) }
    const event: EventExhibit = { id: randomUUID(), type: 'event', title: 'The meeting occurred', content: 'The evidence places the meeting on 18 April.', eventDate: '2021-04-18T14:30:00Z', ...placed(520, 610, 270, 174) }
    const party: PartyExhibit = { id: randomUUID(), type: 'party', partyKind: 'person', title: 'Ada Lovelace', content: 'Named as correspondent.', aliases: ['A. A. L.'], ...placed(720, 250, 280, 190) }
    state.exhibits = [document, folder, note, event, party]
    state.relations = [
      { id: randomUUID(), fromExhibitId: folder.id, toExhibitId: document.id, type: 'contains', sortOrder: 0 },
      { id: randomUUID(), fromExhibitId: note.id, toExhibitId: document.id, type: 'source', sourceRegionId: 'stamp', sortOrder: 0 },
      { id: randomUUID(), fromExhibitId: event.id, toExhibitId: document.id, type: 'supports', sortOrder: 0 },
      { id: randomUUID(), fromExhibitId: event.id, toExhibitId: note.id, type: 'supports', sortOrder: 1 },
      { id: randomUUID(), fromExhibitId: party.id, toExhibitId: document.id, type: 'concerns', sortOrder: 0 },
    ]
    state.connections = [{ id: randomUUID(), fromExhibitId: folder.id, toExhibitId: document.id, label: 'Primary source', tightness: 85, tagStyle: 'compact', tagPosition: 72, tagOffset: -12 }]
    state.brief = { body: 'Identify Ada Lovelace.', concepts: [{ id: randomUUID(), label: 'Ada Lovelace', context: 'Named in evidence.', expectedPartyKind: 'person', resolvedPartyExhibitId: party.id }] }

    const save = await adminFetch(`${baseUrl}/api/levels/${state.id}?edit=1`, { method: 'PUT', headers: { 'content-type': 'application/json' }, body: JSON.stringify(state) })
    expect(await save.json()).toEqual({ ok: true, mode: 'author' })
    const loaded = await (await adminFetch(`${baseUrl}/api/levels/${state.id}?edit=1`)).json() as CaseState
    expect(loaded.views[0]).toMatchObject({ type: 'timeline', rangeMode: 'fixed', range: timeline.range })
    expect(loaded.exhibits.find(item => item.id === folder.id)).toMatchObject({ x: 685, y: 417, isOpen: true })
    expect(loaded.relations).toEqual(expect.arrayContaining([expect.objectContaining({ type: 'supports', fromExhibitId: event.id, toExhibitId: note.id })]))
    expect(loaded.connections[0]).toMatchObject({ fromExhibitId: folder.id, toExhibitId: document.id, label: 'Primary source' })

    const upload = new FormData()
    upload.append('file', new Blob(['OSINT smoke evidence'], { type: 'text/plain' }), 'smoke-evidence.txt')
    const uploadResponse = await adminFetch(`${baseUrl}/api/levels/${state.id}/documents?edit=1`, { method: 'POST', body: upload })
    expect(uploadResponse.status).toBe(201)
    const uploaded = await uploadResponse.json() as DocumentExhibit
    expect(uploaded).toMatchObject({ type: 'document', fileName: 'smoke-evidence.txt', fileType: 'text' })
    expect(await (await fetch(`${baseUrl}/api/assets/${uploaded.assetId}`)).text()).toBe('OSINT smoke evidence')
    const assetRow = await appPool.query<{ storage_provider: string; content: Buffer | null; object_key: string | null }>('SELECT storage_provider,content,object_key FROM osint.assets WHERE id=$1', [uploaded.assetId])
    expect(assetRow.rows[0]).toMatchObject({ storage_provider: 's3', content: null, object_key: expect.stringMatching(/^assets\//) })

    const templateResponse = await adminFetch(`${baseUrl}/api/levels/${state.id}/templates?edit=1`, { method: 'POST', headers: { 'content-type': 'application/json' }, body: JSON.stringify({ name: 'Smoke Template' }) })
    expect(templateResponse.status).toBe(201)
    const cloneResponse = await adminFetch(`${baseUrl}/api/templates/smoke-template/levels?edit=1`, { method: 'POST', headers: { 'content-type': 'application/json' }, body: JSON.stringify({ id: 'smoke-template-copy', title: 'Playable copy' }) })
    expect(cloneResponse.status).toBe(201)
    const clone = await cloneResponse.json() as CaseState
    expect(clone.views[0]).toMatchObject({ type: 'timeline', rangeMode: 'fixed', range: timeline.range })
    expect(clone.exhibits.map(item => item.id)).not.toContain(folder.id)
    expect(clone.exhibits.find(item => item.type === 'folder')).toMatchObject({ x: 685, y: 417 })
    expect(clone.relations.filter(relation => relation.type === 'supports')).toHaveLength(2)
    expect(clone.connections[0]).toMatchObject({ label: 'Primary source', tightness: 85 })
    expect(clone.brief.concepts[0].resolvedPartyExhibitId).not.toBe(party.id)
  })
})