/**
 * Setup de autenticación para tests E2E de Playwright.
 *
 * El flujo de login de Anexo76 pasa por Workspace externo (workspace.aduanasoft.com)
 * y Keycloak SSO — el browser nunca renderiza un form propio. Por eso NO se puede
 * automatizar navegando a /login: ese route hace 303 inmediato al Workspace.
 *
 * Estrategia: obtener tokens directamente del token endpoint de Keycloak
 * (Resource Owner Password Credentials grant) e inyectarlos como cookies en el
 * contexto de Playwright, replicando exactamente lo que hace /auth/callback.
 *
 * Requiere en Keycloak: cliente con "Direct Access Grants" habilitado.
 * Requiere en Jenkins:  credenciales a76-e2e-keycloak-url, a76-e2e-test-user, a76-e2e-test-pass.
 */
import { test as setup } from '@playwright/test'
import { mkdirSync } from 'node:fs'
import path from 'node:path'
import { fileURLToPath } from 'node:url'

// Lógica de chunking idéntica a access-token-cookie.shared.ts
const ACCESS_TOKEN_MAX_SINGLE  = 2800
const ACCESS_TOKEN_CHUNK_SIZE  = 2800
const ACCESS_TOKEN_CHUNK_COUNT = 'access_token_chunks'
const chunkName = (i: number) => `access_token_${i}`

const __dirname  = path.dirname(fileURLToPath(import.meta.url))
const authFile   = path.join(__dirname, '.auth/user.json')

setup('autenticacion', async ({ page, request }) => {
    const baseUrl = (process.env.PLAYWRIGHT_TEST_BASE_URL ?? 'http://localhost:5173').replace(/\/$/, '')

    // E2E_KEYCLOAK_URL: URL base de Keycloak accesible desde el agente Jenkins.
    // Puede diferir de VITE_KEYCLOAK_URL si ese apunta al dominio del propio servidor
    // y el contenedor Docker no puede resolver ese dominio (hairpin NAT).
    const keycloakUrl = (
        process.env.E2E_KEYCLOAK_URL      ||
        process.env.KEYCLOAK_URL          ||
        process.env.VITE_KEYCLOAK_URL     ||
        ''
    ).replace(/\/$/, '')

    const realm    = process.env.KEYCLOAK_REALM     || process.env.VITE_KEYCLOAK_REALM     || 'master'
    const clientId = process.env.KEYCLOAK_CLIENT_ID || process.env.VITE_KEYCLOAK_CLIENT_ID || 'anexo76-frontend'
    const secret   = process.env.KEYCLOAK_CLIENT_SECRET || ''
    const username = process.env.E2E_TEST_USER     || ''
    const password = process.env.E2E_TEST_PASSWORD || ''

    if (!keycloakUrl) throw new Error('E2E_KEYCLOAK_URL / KEYCLOAK_URL no está configurado')
    if (!username)    throw new Error('E2E_TEST_USER no está configurado')
    if (!password)    throw new Error('E2E_TEST_PASSWORD no está configurado')

    // ── 1. Obtener tokens vía password grant ──────────────────────────────────
    const tokenEndpoint = `${keycloakUrl}/realms/${realm}/protocol/openid-connect/token`

    const form: Record<string, string> = {
        grant_type: 'password',
        client_id:  clientId,
        username,
        password,
        scope: 'openid'
    }
    if (secret) form.client_secret = secret

    const tokenRes = await request.post(tokenEndpoint, { form })

    if (!tokenRes.ok()) {
        const body = await tokenRes.text()
        throw new Error(
            `Keycloak password grant falló (HTTP ${tokenRes.status()}).\n` +
            `Endpoint: ${tokenEndpoint}\n` +
            `Respuesta: ${body}\n` +
            `Verifica que el cliente "${clientId}" tenga "Direct Access Grants" habilitado en Keycloak.`
        )
    }

    const tokens = await tokenRes.json() as {
        access_token:   string
        refresh_token?: string
        id_token?:      string
    }

    // ── 2. Navegar al app para establecer origen de cookies ───────────────────
    await page.goto(baseUrl)

    const hostname = new URL(baseUrl).hostname
    const secure   = baseUrl.startsWith('https')
    const base     = { domain: hostname, path: '/', sameSite: 'Lax' as const, secure }

    // ── 3. Inyectar access_token respetando chunking (igual que setAccessTokenCookies) ──
    if (tokens.access_token.length <= ACCESS_TOKEN_MAX_SINGLE) {
        await page.context().addCookies([
            { ...base, httpOnly: false, name: 'access_token', value: tokens.access_token }
        ])
    } else {
        const parts: string[] = []
        for (let i = 0; i < tokens.access_token.length; i += ACCESS_TOKEN_CHUNK_SIZE) {
            parts.push(tokens.access_token.slice(i, i + ACCESS_TOKEN_CHUNK_SIZE))
        }
        await page.context().addCookies([
            { ...base, httpOnly: false, name: ACCESS_TOKEN_CHUNK_COUNT, value: String(parts.length) },
            ...parts.map((p, i) => ({ ...base, httpOnly: false, name: chunkName(i), value: p }))
        ])
    }

    // ── 4. Cookies httpOnly (el servidor las gestiona; Playwright puede setearlas en test) ──
    if (tokens.refresh_token) {
        await page.context().addCookies([
            { ...base, httpOnly: true, name: 'refresh_token', value: tokens.refresh_token }
        ])
    }
    if (tokens.id_token) {
        await page.context().addCookies([
            { ...base, httpOnly: true, name: 'id_token', value: tokens.id_token }
        ])
    }

    // ── 5. Verificar que la sesión funciona navegando al dashboard ────────────
    await page.goto(`${baseUrl}/dashboard`)
    await page.waitForURL(/dashboard/, { timeout: 30000 })

    // ── 6. Guardar estado para los tests dependientes ─────────────────────────
    mkdirSync(path.dirname(authFile), { recursive: true })
    await page.context().storageState({ path: authFile })
})